| SheldonD |
2sc5200 and matching PNP are 1.75 USD at http://richtechparts.com
Cheapest I found so far.
plus 10 USD shipping
Small shop in Vancouver British Columbia. |
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| Nordic |
| Thanks dud, I was about to kick my PC. |
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| dudaindc |
| quote: | Originally posted by Nordic
Thanks dud, I was about to kick my PC. |
No problem - I know the feeling... :headbash: |
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| emmasdad |
Hi!
If there are any boards left in the Group |
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| emmasdad |
Hi!
If there are still boards available in the group buy I would like to purchase a stereo pair.
I am a newish member of Forum so subject to moderation and would be grateful for info if this post makes it to thread.
Regards
Emmasdad;) |
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| Nordic |
| lol guys, keep the orders comming, we are approaching the limit of my fabrication budget, but plans can be made :) |
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| Stevox |
Hi Nordic,
Help, I ordered 1 stereo set.
I just read that I can only pay you with Visa, but I only have Paypal.
I have the same problem as Meanman1964.
Is there someone in Europe that can take my order so I can pay with IBAN and SWIFT number.
Otherwise I have to cancel my order.
Peter. |
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| Nordic |
Contact Jack C, he could possibly arrange it for you too, seeing that he is allready sending a sett off to Belgium...
http://www.diyaudio.com/forums/show...640#post1307640
I just need to check my cashflow... but if he can't help you , I could possibly take your payment over paypal, and use it towards nice things off ebay.... I wish they would give us withdrawal facilities here in SA... I have paid more in Paypal invoices than I spend money in my own country this month :(... guess my money is only good when it fattens the man. |
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| Stevox |
hi, Nordic
Thanks for the info, I will contact to jack C.
Peter. |
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| Stevox |
Hi Nordic,
I just received an email from our friend Jack, that He will arrange it.
Jack, thank you very much
Peter. |
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| pistoljoe |
Hey, can I still get one pair of boards?
thanks, Joe |
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| SheldonD |
Nordic:
| quote: | Originally posted by Nordic
I just need to check my cashflow... . |
You need/should not have a cash flow problem.
Figure out exactly how much the different kits will be
and you have the credit card in place.
Then get people to put money on their orders.
Just make sure you have ALL of YOUR costs covered.
Each Kit (PCB, transistor, resistor ,cap)and shipping
You can start collecting while the PCBs are being made.
Thank you for all your work.
Sheldon |
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| touchdown |
My nephew is interested in building this simple but really promising amp! What a nice occasion to stay and work with him!
Count me in for a stereo set of PCBs.
Thanks to Nordic and Carlos
Nicola |
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| Nordic |
Finaly got my PC working virus-free now. Was that a long couple of days or what? My crappy download connection for SP2 was like 14kbps... was much faster yesterday when everyone was watching rugby.
Anyhow, I need a bath and a nap now, and then I'll get on with the work.
I want to change the site completly to integrate it into the catalog which handles the transactions better. There is one more module I need to integrate into osCommerce to make it talk to my super merchant's account.
Then I can start processing payments... I want to see if I can get the gerbers done tommorrow and send it off to the factory, so they can start so long.
Merci again Jack, I received your message last night but it was late and I was about as tired as I am now. Still feel like kicking the PC for wasteing so much of my time. It is very kind of you to offer to assist our european friends.
Keep the orders comming in, I'll make a plan.
Touchdown, the only thing simple about this amp is the schematic... the sound is top class. |
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| Ed LaFontaine |
We call that "booting it up", the old fashioned way. |
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| Nordic |
Oi!!!!!!!!!!!!!!!!!!!!!!!
Sorry I only woke up now from my 15 minute nap... nearly 12 hours later...
Guess its time to get to work then.... at least I'm feeling alot more productive with a more responsive PC.
Heck with the second install I even got a working directx again. |
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| Nordic |
I so wish we could swear on this server....
All this time I wasted..... the bloody problem IS with the server...
I just spoke to a very helpfull chap at my ISP, he even spoke my homelanguage, which realy made for good communication.
Anyhow, it appears they can also not see the stuff I can't on my own site... getting a hell of alot of gateway timeouts...
I e-mailed my host about this about 2 hours ago, and am still awaiting a reply... failing some corrective measures, I have learned from my local ISP that they offer reasonably priced hosting, which even has the osCommerce software I am battling to set up, with the errors, pre-installed.
Hope to get all of this sorted out today, and at least if need be, start the process to point the domain to the new server, which can take up to 48 to update.
So expect no updates to the site for today.
Tommorrow I am going for an MRI scan of my bum again to see why my back hurts so much. So I will probably only be back tommorrow afternoon.
I have no words to begin describeing my frustration with this website... From the days it took them to figure out the problem with the server and the original domain I wanted, which I now still don't have, but at least know the problem was with my host.
To the days spent trying to clean off whatever might have been lurking on my PC, the days spend backing up and formatting and reinstalling and redownloading security patches and service packs.
BAAAAAAAAAAAAAAAAAAH AAAAAAAAAAARGGGGGGGGHHHHHHHHHHH!
I have been doing websites for many many years, never had such a ****** experience. It is like painting blind... you might get it right eventualy, but in the beging everything look's like a 2 year old's drawing of the cat. |
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| claiborne |
Please put me down for 1 stereo set + parts. Thanks!
-claiborne |
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| Nordic |
I updated the pre-order list on the dx site with the new names,
You might have to press F5 for the page to refresh.
I can see the file is there in my ftp browser, but I get gateway timeouts through internet explorer... I have to trust for the time being you guys can read it. |
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| pistoljoe |
Awesome, Nordic, thanks.
This will be my first go at SS, so someone might have to point out the heaters for me.
Joe |
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| cwujek |
I'll take two stereo sets (4 PCBs), plus 4 sets of the power supply boards and the other two small associated boards. Would also buy any parts kits available. Thanks, looks like a great first time build. I've built a lot of tube amps, I need to try SS, especially for this cheap. May as well build two sets...
Chris |
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| Nordic |
Finaly!!!! back from the hospital... any of you guys been in the MRI scanner for an hour before? just plain horrible!!!!!!!!!
OK, I just finished costing on the transistor kits.
these kits consist of all the transistors you will need to build two channels, except for the 4 output transistors.
Kit contains
BC556A 2 pairs
BC546B 3 pairs
BD140 + BD139 4 pairs
BD139 1 pair
My cost is just shy of $4 per set, I will sell at $5 to make up for the petrol to fetch it, bank charges, and of course for the time to sit and match these buggers.... suppose I will have to build a better matching jig now.
I have to do the other costings during the day.
We have not moved to production of the PSU boards yet... normally there is quite a wait for everyone to pay their bits in... but as soon as our transaction processing works, and the first couple of payments come in, it should clear funds for the PSU boards again (sorry I am a medical pensioner, not a rich man).
The PSU boards will be plain CNC milled PCB without silkscreen or soldermask, to save costs... they will be cheaper than the amp PCBs by quite a bit though. The guy does same day processing, but is up country from me though, so it will take a day or 2 in the mail to get my hands on the PCBs though... nothing that should realy stretch the production run much longer than it has taken up to now.
If you are haveing problems with the webserver today, it is because it is being moved to Australia, the movement process started last night allready, some of you in the first world may allready be looking at that server... I don't know if the host has copied the website over too, or just moved the domain, our south african DNS servers will probably only take me to the new server at 12 tonight.
In the meantime, I can't see it. |
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| braingel |
I'd like to get one set if there are any left.
Thanks,
Alex |
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| Harry3 |
Hi Nordic,
when you get a chance can you post the pitch for all the capacitors on the amp.
Also what is the cost of the boards now that more people are interested, as I might buy one more pair?
regards
Harry |
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| Nordic |
It is on the website now...... I think
I forgot to mention with the transistor post, there will be 16 kits available in total for the first batch, some are allready spoken for.
Get on the preorder bandwaggon before it leaves... |
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| cwujek |
| quote: | Originally posted by Nordic
It is on the website now...... I think
I forgot to mention with the transistor post, there will be 16 kits available in total for the first batch, some are allready spoken for.
Get on the preorder bandwaggon before it leaves... |
I'd like to get these. Enough for two stereo pairs. Thanks,
Chris |
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| lgreen |
| quote: | Originally posted by Nordic
It is on the website now...... I think
I forgot to mention with the transistor post, there will be 16 kits available in total for the first batch, some are allready spoken for.
Get on the preorder bandwaggon before it leaves... |
Oh good, I'll take one of those kits if its still available.
EDIT- I just looked at the web page, very nice! |
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| Ed LaFontaine |
I see the BOM has been made available today.
I'd like to get the transistor kit to go with my boards.
Thanks, Nordic |
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| rellum |
Hello Nordic,
Nice work you've done. Congrats.
One set of transistors for my boards if still some available.
Regards,
Francis |
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| Jack C. |
Salut, Nordic
For me too...
cordialement
J
PS. Rellum, pourrais-je prendre contact avec vous? |
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| Westley |
| I would like two sets if possible. Thank you. |
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| SteveA |
2 sets for me also. Are boards available for the PSU, etc as well?
Are they included in a set?
SteveA |
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| Nordic |
For those of you downloading the AMP files, please refresh the construction page... It is now updated to version C... It should say V.C next to the downloads...
I need to update the BOM again, there is a small mistake on there relateing to part numbers and it exluded the components for the bias servo.
TheNew files are
Updated/corrected schematics, now contains bias servo.
Updated/corrected silkscreen (it does not have the wire link from pad at C11 to GND in , but this MUST still be installed)
Updated/modified PCB (relay part has been replaced with simple 3 pin jumper, as it is basicaly an option you will select at install time to suit your speakers. Bias servo connection points moved to easier positions to find.
Sorry for the little inconvenience now, but it is better than a big mess at the end.
I will add the updated BOM shortly, please ignore the one that is there... it is correct in terms of component values, but numbering is wonky and some components are missing.
Also forgot the kit will need and extra pair of BD139 for the bias servos, but I can work it into the $5 price for the kit set without it affecting the bottomline much...
I plan to get on with the PSU boards shortly and will keep all informed, I just want to know the AMP board requires no more work from me, until it comes to installation support.
Sheldon has offered to doublecheck for me, so I will let him give the final OK, when he sees no more errors. |
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| claiborne |
Nordic,
Please reserve one Kit for me(pcbs+transistors).
I checked the website and did not see my name(claiborne) added. My apologies if it has been added and is not showing up due to the server move.
Thanks!
-claiborne |
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| dudaindc |
Nordic
Hope you are feeling better...
Please include a transistor set for me. Thanks!
:cubist: |
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| pistoljoe |
and a transistor set for me, please, too.
Joe |
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| maxlorenz |
Hi Nordic,
How does it feel to be inside a big magnetic field?
I wish you the best ;)
OK, I hope your transaction method is not too cumbersome nor risky :D
Make it two amp sets and two transistor sets for me instead of only one.
Thanks for your effort,
M |
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| es44 |
Hi Nordic.
I would like one stereo set as well. Hope i get the time to finish my projects some day :D
Best regards
Ebbe |
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| Nordic |
Hi guys, thanks for the orders....
Hey max, its like being holed up in a subwoofer that occasionaly gets put inside a winged piano... ok the first few minutes... then you realise your head is clamped into protect your ears... and thats where the ride gets claustraphobic... was an hour of hell...
I didn't even wait for the results... I just had to leave when i was done... the doctor can phone me if they spot any gremlins.
Not everyday a sexy blonde woman phones me....
The transactions will be straight forward credit card payments...
The transaction part gets handled securely on the supermerchant's server, kinda like when you do a paypal payment...
I never get or see the credit card details... and thus do not have to worry about security that much... there are some rules and instructions I need to follow, and thats it.
Hey Dud, I don't know if it is the calm before the storm, but I feel like a puppy today, can't remember when last I had so few physical complaints... I'm feeling good! |
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| Mikewong |
| I needed 1 set of the boards. |
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| rellum |
| quote: | Salut, Nordic
For me too...
cordialement
J
PS. Rellum, pourrais-je prendre contact avec vous? |
Hello Jack,
I'm still under moderation and can't answer directly, but feel free to contact me. |
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| maxlorenz |
| quote: | | Hey Dud, I don't know if it is the calm before the storm, but I feel like a puppy today, can't remember when last I had so few physical complaints... I'm feeling good! |
That's because that monster machine aligned all your atoms!
Your neurons must be supercharged now :D
Quick Googling:
http://www.affs.org/html/biomagnetism.html
http://web.mit.edu/spotlight/biomag/
Sorry, I have to leave, my magnet waits for me :clown: |
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| Nordic |
Haha you funny guy!!!!!!!!
There is one stereo set of amp boards left from the first batch, and a transistor kit for it!!!
I need to give the aunty at the creditcard place a call to see if I calculated their charges correctly... but provisionaly the prices are
Amp set (2x pcb) $20
Transistor set $5
(bumping the transistor packages to 20) made the numbers work out sweetly. |
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| Harry3 |
Hi Nordic,
as i want to bi amp please add another stereo set to my name.
Regards
Harry |
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| Nordic |
Ok Harry, I will add you.... I will get some bucks from my wife to make up the shortfall for that set...
Otherwise all the boards and transistor kits from the first run is now spoken for.
Any further orders will now go on to the second batch preorder list... there will be about 2 to 3 weeks between the first and second batch...
I now have two webservers, 2 doamins, and two hosts trying to figure out the last problems with the catalog/checkout process... I told them the firts one to get it sorted out, gets the account.
After 2 weeks of 4 to 5 hours of sleep a night I can become quite a *****, when dealing with companies. 99% of the **** I had was out of my control... and it seems the problems are pretty common among all hosts, unless you want to fork out hundreds of dollars for dedicated hosting and certificates...
Depending on how far I get today i might ask a few of you over the weekend to make dummy orders... I will give you the card no to enter etc... noone will be billed, they will just be test transactions. |
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| rabbitz |
| quote: | Originally posted by maxlorenz
Hi Nordic,
How does it feel to be inside a big magnetic field?
I wish you the best ;)
|
Think of a jack hammer strapped to your head and you've got it. Some times there's a beat you can groove to but most of the time just annoying and seems as though there will be no end. On top of that, time seems to go backwards.
While this is happening they are trying to talk to you through some ear buds.... "Don't breath... exhale now.... only 30 minutes to go sir"
"WHAT?" :xeye: |
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| rellum |
Jack,
Try this : francispointmuller2 chez orange-ftgrouppointcom
:masked: |
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| destroyer X |
Excelent group buy is running by Nordic.
My special thanks to the ones have ordered sets.
Dw1narso
Ed La Fontaine
Jack C
Atiq19
Nogoodboyo
Konfret
Westley
RKH
Meanman1964
Igreen
Cwujek
Claiborne
Touchdown
Pistol Joe
Stevox
Emmasdad
Harry3
Mikewong
Es44
Maxlorenz
Pistol Joe
Dudaindc
SteveA
Rellum
SamL
Beaman
Rabbitz
Jozua
FrancoisG
Rellum
Greg Erskine
Dw1narso
Some of you ordered to Nordic more than one set,
this means that almost 50 stereo will be distributed.
I want to thank Nordic, by this excelent work he is
doing for all of us...observe folks, this is friendly
effort, price is the cost, more shipment... was the
arrangement we made.
Of course, Nordic is authorized by Dx Corporation, to
obtain future profit related DX High Resolution Amplifier.
Once again, thank you very much, i have read all thread,
and i know each one of you as forum members and good crew
members.
Some very close friends are in this group buy, of course,
this gives me more and more pleasure..thank you guys.
regards,
Carlos |
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| lgreen |
| only one way to honor the great carlos-- listen to the amps with your shirts off! (ie., his avatar was shirtless for a number of years). |
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| nogoodboyo |
| Has anyone from the SF Bay Area built a DXAmp, and if so are you going to the Burning Amp next week? |
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| maxlorenz |
Sorry, still OT:
I think we are all indebted to Nordic and Carlos for their effort, and we all wish that Nordic's health improves steadily from now on, both for altruist and egoist reasons ;)
May the compound energy of our love reach you on your sunny country :angel:
(I am specially interested in this project because at last I will be able to study what happens inside an SS amp :D )
Regards,
M |
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| Ed LaFontaine |
| quote: | | May the compound energy of our love reach you on your sunny country |
Amen, amen... |
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| SamL |
Hi Nordic,
Can you add a set of transistor with my order. Somehow I did not read that transistor is available.
Thanks :D
Sam |
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| Stevox |
Hi Nordic,
Same to me.
Can you add a set of transistor with my order.
Regards,
Peter. |
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| Nordic |
Wow thanks guys.......
I feel so much better when its warm like now, I can actualy DO stuff. Bastards at the hospital phoned me yesterday, I must come back on Tuesday for another scan... (at their expense - so they must be haveing fun). :P At least I was promissed only a 15 minute scan this time, and apparently it is an even fancier machine I have to climb into this time...
After almost giving up after battleing for two weeks... I even started manualy programming my own shopping basket thing yesterday, my host informed me that he can put me on a dedicated server with an SSL certificate.... wich is aparently why the catalog would not process successfully... we are negotiating a price still, but I think the site will move to its 4th server in 2 weeks today...
The guy realy goes out of his way to try and sort you out....
Sam, you are sooooooo lucky.... I made a booboo counting the transistor kits... orders were 19 of 20... now it is 20/20 with you included....
For those missing the innitial boat.. there will only be a short while, between batches produced... maybe 2 weeks or so...
I guess it is not unforseeable, that one or two orders won't happen, due to life, and make those sets available for whoever comes next... |
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| destroyer X |
Good morning...now 5 hours morning here.
400 pounds, 184 centimeters tall, 56 years old, 3 children, married 2 times and going to the third.
Yeah!..i can figth Sumo in Japan....will be good there!
regards,
Carlos |
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| es44 |
I too am very greatful for both Nordic and Carlos' effort here.
Really hope you will fight back nordic. The world needs your kind.
Just realised, that i have a lot in common wit Carlos. Difference is, that i only have 2 children, i can't show more than 68 Kilo, and 167 Cm, but the rest is similar. Guess -51 was a darn good year :D
Greetings to all of you from the sunny Denmark. ( at least for today that is) |
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| destroyer X |
... you and me included..for sure!
I am tracking the thread with enormous attention.
Thank you folks.... and thank you Nordic.
regards,
Carlos |
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| Francois G |
Nordic,
I spent some very pleasant time over this weekend on part selection (just writing down numbers to order later do a little dreaming) but found that the current board is very tight with space for some resistors ad capacitors. Really too tight for better than "run-of-the-mill" parts. That got me wondering if there might be a demand for a Hi-Fi version board, that may cost a few dollars more, but that would allow more flexibility in part sizes. Perhaps the second run could include a slightly bigger PC board?. I would certainly buy a set if available, perhaps other would too.
For example, I would prefer to use Wima MKP2 (polypropylene) caps for the 100n bypass caps, but they are 5mm thick and it seems that the board will accommodate only 3mm.
This is no criticism; I understand that your goal was to stay true to the original DX motto of being inexpensive; frugal PC board and part specification. But, the potential of the High Resolution II makes me wish for a little more PC board space to use better parts. And I'm not talking boutique parts, just Dale/Vishay RN resistors and the like. .
Best regards,
Francois |
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| Francois G |
Perhaps Nordic will offer a BOM part number later, but so far I have been unable to find (in catalogs) driver heatsinks that will fit the current PC board layout. If I measured correctly, the heatsinks will have to be no more 10-12 mm wide (C11 and C14 limit the widths
It would be good to inform the group if someone knows of a heatsink that will fit.
Regards,
Francois |
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| Nordic |
My main problem is that I just have the freeware version of Eagle... (board is at max size for it) If one of you can set me up with a full version, feel free to drop me a mail....
I have managed to push many of the resistors up to larger package after a request for it... the bypass caps can be attached under the board... my first choice was Roedersteins, but I couldn't make em fit on top, eventualy I settled for a middleground of Wima MKP sizes... PLease ensure you have the version D files from the website... Press F5 if you still see the old stuff from your cache. It is available in a zip file... please use that if you can, to save bandwidth...
The cap between the 2 resistors comming from the input transistors is spaced for an FKP2 though. I still have a few left so I will randomly add them to a few packages.
I think the performance increase you can gain with "better" components, on this particular amp, is far outweighed by the cost of those components... i.e. it sounds so good, it is pointless to spend more money for .0005% perfomance increase...
That is just my opinion... your mileage, hearing, my differ.
But as I said hook me up with a full eagle, and I'm your guy.
I see the BOM needs some work again, the first one I did is on a virus infected drive... so I'm not keen to go there again... but it seems I will have to, to save some time, as it had some part numbers etc in, as well as costing figures for a capacitor kit, one based on mostly Wima MKP2s and one based on cheaper brands... The caps I have in my amp now, are pretty low cost, allthough not bad, they are in fact the exact same types Brian sells with the Twisted Pear kits. Little yellow ones... I don't know the brand, he might be able to help out.
My main opinion is that you can save your nice parts for amps that need em....
Some news on the server... I just managed to enter an https address on the site, so that means my certificate is installed, and I can now probably get the catalog running quickly, after 2 weeks worth of dry runs...
Worst case scenario, I might have to call my friend to come poke the keys with a slowboat and a cup of Jackob's coffee. Only way to get him to do anything. |
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| Jozua |
Nordic
I cant wait to get going.
I want to put this amp againts some of my friends very high end digital equipment and see the results...?
Regards
Jozua |
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| rabbitz |
| quote: | Originally posted by destroyer X
... you and me included..for sure!
Carlos |
... and me in 1951. |
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| Nordic |
Guess what??????????
I just processed the first successfull credit card transaction (allthough it was a test card no etc..). I feel way impressed with myself right now, can make another notch on my skills list.
Sure it cost a few bucks to learn, but now I can sell this as part of websites to some of the local guys I deal with. (I dable in webdesign) here is one of my recent websites http://capecountryroutes.com/.
I guess I'll be ready to start takeing your money in a day or two then.
Just want to talk to Jack and Ed about how they want to go about things first.
P.S. for those who had security concerns the site now processes the transaction part behind a secure layer, so you will see the little lock in the URL bar when you go to checkout your shopping basket. |
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| nogoodboyo |
Hey Nordic!
Thanks so much for your huge effort. I'm sure there loads of people here who appreciate it.
Also, I hope it is not too long before you are in good health again, good luck with that.
~Andrew~ |
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| konkret |
Hi Nordic,
can you count me in for two transistor sets (for 4 amps), please?
Some spare transistors will be good...
Just realized that I missed the 1st transistor run ... never mind.
He, now I understand how you managed to set up such a perfect
web site in record time!
-----------
konkret |
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| Nordic |
Konkret do you want me to send your stuff with the Europe groupbuy stuff via Jack C? or do you want direct shipping?
:angel:
P.S. You ain't seen nothing yet... the catalog is pretty neat, will take some time for customisation, but that I can always do later... |
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| Francois G |
Nordic,
Re post #162, I did not know that you were bumping against the max board size you could process. Thank you for maximizing pitch within those constraints.
Regards,
Francois |
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| Nordic |
Hi Francois, I did manage to push a few extra resistors up a size, specialy for you, as well as a minor other improvement to ground traces...
I was literaly u pagains the 12mil spaceing the fabricators require between the edge and the components.
It will have to be a surprise for a day or so, as I am busy trying to get the last few things sorted out in the catalog, so we can start processing orders tommorrow.
Also need to finalise shipping costs so that we have one variable less. Provisionaly for direct orders it will be in the area of $5.
Prices are as follows
1 stereo set PCBs $20
1 stereo set of transistors $5
TO ALL USA GROUPBUYERS.
If you want to have your parcel sent via Ed Lafontaine, please drop him a message or contact me at sales at dxamp.com (I guess you know how to read that). I am planning if costs are not too prohibative to courier a large parcel to him, which should not only speed up delivery, but also take a little risk out of the mail system. Shipping costs to be advised
EUROPE GROUPBUYERS
If you want to receive your items through Jack C, you also have to contact Jack or myself as soon as possible, with your all the details you think he might need to process your package. As he will be paying me for the Europe batch and you will be paying him.
Same as the US group, shipping costs to be advised
Thank you to all the kind helpers for the nice software. |
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| hallcon |
| ;) Hi Nordic Please sign me up for two stereo sets ( 4 PCBs ), plus two sets power supply boards, and the other two small associated boards. would also want two stereo parts sets and three sets of transistors ( 2 stereo sets & one backup set for mistakes) This will be my second diy project & am looking forward to it. Thank you. Regards, Dean |
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| konkret |
Hi Nordic,
please ship directly to me - it will make things easier I think.
Also could you please send boards and transistors as one batch?
Thanks!
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Konkret |
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| Ed LaFontaine |
Francois, I have your information.
Bearman, you have mail |
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| destroyer X |
To have guarantee to avoid oscilations, the compensations capacitor, the Miller one, was increased to 150 picofarads, and use Silver Mica there, please!
Constructors that have scopes should try smaller values, checking for oscilations measurable into the output.... the optimized value will be lower than 150 pF..... this decision was because i have constructed more units and i found 50 percent of them oscilating..showing high voltage at the output... Very High Frequency voltages there.
Also the electrolitic condenser used into the VBE multiplier is an overkill.... the circuit has low consumption, low drain of current, reason why the "big" electrolitic condenser there is "holding" the voltage and disturbing adjustment of bias...when you increase, the voltage increase slowly, with a delay..also when you try to decrease your bias happens the same..... reduce it...or even remove it.... 2,2uf will be fine....or 1uf...or even 0.47 electrolitic condenser will be fine to fill the place may exist into the boards.
If not place to those condensers into Nordic boards, then, remove this one and forget it...bothers a lot!
The Grounding idea is beeing checked..the one published into Greg Home page, Dx High Resolution II amplifier will be changed.
Soon you will have this grounding idea changed...the capacitors are still modified into the schematic.
thank you folks...and sorry because of that.
Safety is a need...i had to do that when i have faced problems.
regards,
Carlos |
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| Nordic |
I just want to report back on the driver heatsinks quickly.
I think it would be the smart thing to do, is to add the 4 sinks to the transistor kits which will then sell for $6.50
I will also include free mica isolators for the output pairs with every PCB kit. Transistor kits also include small pieces of heatshrink to bind input pairs together into 6 pined chips.
Damn, i just checked the stock number the guy gave me, and it is not the same thing... I guess the price should not be much diffirent, as they are the same size roughly. he is on lunch at the moment, but I'll get back to you if I need to adjust the prices again. |
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| Nordic |
Got some qoutes from couriers. these guys are plain nuts...... some want in the region of $80. Still waiting for one company which said they could open an account for me, which will allow them to discount quite a bit, I have to send them a breakdown of the parcels first though.
If one of you have a small scale and can weigh some PCB for us so I can work out weight per square cm, it would be neat.
Generaly it still seems cheapest to use registered international airmail, around $5, depending on what packageing I can find, they don't have stock of the nice boxes they used to have for shipment.
Still waiting for a callback re the heatsinks, left a second message...treading lots of water today to tie last knots it seems. |
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| es44 |
Speaking about the heatsinks for the drivers. I have just ordered the transistors i didn't have in stock myself.
I guess i could cut pieces of 4mm alu to make sinks myself, if i make them big enough ?
I have no problems bending the pieces :smash:, so that it will (nearly) look like "originals" . |
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| Francois G |
Nordic,
I'm not sure about the status of transistor sets at this late stage, but if still available could you add me for a transistor set for one stereo PC set, please. The heatsinks did it for me.
Will you "officially"inform us of when to start paying?
Thanks,
Francois |
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| Nordic |
Yes, it would help also help if you activate your e-mail button so long in the user c.p. Or use mine so that I can sen you a reply when all is up... had too many delays today, useing the time to clean up the catalog... its been years since I worked in php...
Will sort you out with your order.
For the person that asked, yes, I will ship everything together, unless you check out the items seperately from the catalog... i.e. pay shipping twice, then I will ship it on receipt from the factory.
Ess, yep, you can easily use some alu, doesn't even need to be that thick, mine don't run hot, and they are pretty small.
You get the aluminium u-tubes which if you had some, you could probably get away with jsut cutting off a 2cm piece and tapping it. |
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| pistoljoe |
Nordic,
I will gladly pay extra for the heatsinks, anything that saves time is good. You can ship to me through Ed, if that is easiest.
What are people thinking about power supply(ies)?
Joe |
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| Ed LaFontaine |
| bearman and RKH, I have your information. |
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| pistoljoe |
Ed,
email me at gmail under my moniker name. I seem to still be under moderation.
thanks, Joe |
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| Ed LaFontaine |
It is reasonable to buy all new components for a power supply.
My approach may be a little different, but it works. I have found the local electronics repair shop hates to throw things out. This includes repairable recievers and amps for which the former owners decided the cost of repair was more than they wanted to spend. So, these salvagable treasures wait until someone like me comes along and recognizes the value in the parts. Every one of them contains a complete, usually functioning power supply and heat sinks and connectors and case...yada,yada. I have more of these in storage than the wife needs to know about.
Spend some time scouting them out.
It will be necessary to match the VDC to your project. You will get some face time with someone who can and may be interested in answering some of the questions you will have about your project (just don't forget they have a business to run). It's a suggestion. |
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| Ed LaFontaine |
The method I favor for forwarding your parcels to you is Priority Mail. This method costs $4.60 & provides shipment through out the US in 2-3 days with confirmation of delivery. There are many other options too numerous to list.
The stated rate of $4.60 will use a flat envelope. I will include enough cardboard as reinforcement and foam/bubble wrap as cushioning for the parts sets.
If you favor another method just let me know & I'll do as you wish by arrangement. Any suggestions are welcome.
pistoljoe, I recieved your information. |
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| dudaindc |
| quote: | Originally posted by Ed LaFontaine
...
My approach may be a little different, but it works. I have found the local electronics repair shop hates to throw things out. This includes repairable recievers and amps for which the former owners decided the cost of repair was more than they wanted to spend. So, these salvagable treasures wait until someone like me comes along and recognizes the value in the parts. Every one of them contains a complete, usually functioning power supply and heat sinks and connectors and case...yada,yada.
... |
Thanks Ed - that is a great idea!
Cheers! |
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| destroyer X |
In special, dedicated to you, High Resolution II crew.... i ensure you.. prepare yourself for a nice voyage...into pleasant music!
Please, take a look there, read and copy the schematic from Greg Home pages..updated, upgrades, checked.... it is a nice PDF Greg Erskine prepared with updates.
There are important comments into the thread.
regards,
Carlos
....................................................................................................
I think you are great Mongo
I have strong appreciation on you Ed de La Fontaine.
regards,
Carlos |
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| es44 |
| quote: | Originally posted by Nordic
Ess, yep, you can easily use some alu, doesn't even need to be that thick, mine don't run hot, and they are pretty small.
You get the aluminium u-tubes which if you had some, you could probably get away with jsut cutting off a 2cm piece and tapping it. |
Okay, i've got it, thanks a lot Nordic.
I hope you received mail by the way.;)
Cheers to all.
Ebbe |
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| Nordic |
Hi guys sorry for the radio silence, but I had the wind knocked out of my sails a little this morning... it apears my boy (cat) may have cancer, they are our children and it is a big shock to the system. Still waiting for the blood test results, but I am not too optimistic... I almost speak cat, and have almost never been wrong reading the signs.
I'm doing fine now after a few hours sleep, but I know its going to be a crying fest when my wife walks in tonight again.
Please do not get confused between Greg's schematics/part no's etc. and the DXAMP.com ones as found at http://www.dxamp.com/construction/ .
I need a an hour or two before I can upload the latest version, so just press F5 on that page a little later and see if the version E files are on yet.
I have worked in some small recommendations from Carlos and the boards are going in to the factory in an hour or so, had lots of troubles with doing the gerbers (my first time) but the guys at the factory are a great help. Also they promised to aim for a 4 to 5 day production run so I will in all likelyhood start shipping next week.
Ed, I'll be sending you mail a little later.
Got quite a bit to do in the next hour then it seems, oh and I need to get pricing on some power resistors, for the resistor kits, these will contain 1% 1/4W metalfilm resistors for 2 channels as well as the power resistors for the output side, and the 4 multiturn trimpots.
"just keep swimming, just keep swimming..."
Finding Nemo |
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| es44 |
You surely have my sympathy there Nordic. I'm a cat-person myself.
Actually there are photo's of me in my cradle, where i never had a cushion, instead i had a cat. And all through my life there's been cats, so i know the feeling of saying goodbye to a dear friend.
No matter how much you think you are prepared, it's one of the hardest things to do. Only cat-people know that feeling.
Remember all the good times when things can't be different, and be proud that you gave him a good life.
All the best
Ebbe |
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| Nordic |
The vet said last night the first tests came back negative for all the main bad thinngs, like leukemia, FIV etc... I'm going to fetch him now, there were still a few results outstanding relating tohis kidneys, but I'll probably get that now...
That cat is soo special, he has the feline equivalent of down's syndrome, he is extremely loving like a 2 year old todler, always following me arround, talking incesantly at times, and standing on his back legs with his arms stretched up, so I can pick him up...
So here is hopeing for good news when I get there, it was so sad when we had to put his mommy down in march.
Be back in a bit. |
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| Nordic |
No real news on the cat yet.
I will try to have the catalog activated by this afternoon.
Registered international airmail will be $7.5 up to 100 gram.
If we can get 10 US groupbuyers who wants to ship through Ed, I can add that funds together and courier it to him. I believe it is a 2-day courier, this would add a margin of safety in getting your things too. You would still need to pay Ed then, for shipping from him to you.
Also, please give me a hands up if you want resistor kits, these are more expensive than I thought at first, as I was overlooking the more expensive parts like the trimpots and zeners.
The kit includes all resistors needed for the PCBs and bias servos.
It inlcudes the 10 zener diodes and 4 multiturn trimpots.
You still need 2 10w+ 10R resistors for bias adjusting, during setup. |
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| cwujek |
| quote: | Originally posted by Nordic
No real news on the cat yet.
I will try to have the catalog activated by this afternoon.
Registered international airmail will be $7.5 up to 100 gram.
If we can get 10 US groupbuyers who wants to ship through Ed, I can add that funds together and courier it to him. I believe it is a 2-day courier, this would add a margin of safety in getting your things too. You would still need to pay Ed then, for shipping from him to you.
Also, please give me a hands up if you want resistor kits, these are more expensive than I thought at first, as I was overlooking the more expensive parts like the trimpots and zeners.
The kit includes all resistors needed for the PCBs and bias servos.
It inlcudes the 10 zener diodes and 4 multiturn trimpots.
You still need 2 10w+ 10R resistors for bias adjusting, during setup. |
I'll take the enough resistor kits for two stereo PCB boards. Also, if you have heatsinks available, I'll take as many as required. I'll pretty much take as many parts kits as you put together. Thanks,
Chris |
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| Nordic |
Thanks, the resitor kit, same as the transistor kit is for 2 channels (i.e. a stereo set).
The transistor kits allready contain the small driver heatsinks, you will just need to find big sinks for your output transistors. I forgot to post the price, the restors kits are $9.99 per stereo set. |
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| cwujek |
| quote: | Originally posted by Nordic
Thanks, the resitor kit, same as the transistor kit is for 2 channels (i.e. a stereo set).
The transistor kits allready contain the small driver heatsinks, you will just need to find big sinks for your output transistors. I forgot to post the price, the restors kits are $9.99 per stereo set. |
Ok awesome. So two resistor kits for me. I'm getting excited to get going on these....Now we need a Piltron group buy......
:) |
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| Nordic |
Hehe, boards have been sent off for fabrication and should be ready by Thursday or Friday, transistors have been ordered, the suppliers had to fly some down from Johannesburg, so I will get that by Saturday or tommorrow afternoon to start matching sets out.
Still trying to get my hands on a vacuum packer. Will go check the bootsale market out this weekend, actualy it is on the way to the supliers.
I have sent trhough the request to make the transaction processing live, just waiting on the invoice, as they activate you on proof of payment. |
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| SheldonD |
Hi Nico: a resistor set for me please.
Thanks
Sheldon |
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| maxlorenz |
Hi Nordic,
One resistor set for me please. :)
Thanks,
M |
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| rellum |
Hello Nordic,
A resistor set for me, please.
Francis |
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| dw1narso |
Hi Nordic,
now I see that transistor (then with heatsink) and then resistors additionally...
as my first post... please count me in for a pair (Stereo) set of PCB plus any additional parts (resistor, transistor, etc.) that you can include.., please...
Thanks,
---
David |
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| Nordic |
Hi guys, we'll be going live shortly, yes dw1narso, I remeberd you said you want everything that is available.
Rellum, you have been sorted out, Jack is busy doing the europe groupbuy payment, when he is done I will open it to the rest of you guys.
Please come back to the catalog over the weekend and next week as I am also uploading a number of well priced, 99.99% OFC, silver, and hybrid cables and speaker accessories. These are also from a local manufacturer. |
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