| yldouright |
BrianGT
Nice to see you back from your hiatus. I hope your nuptuals continue to provide comfort the rest of your days. BTW, what did you ever do with your 'wrong way' attenuator? I tried emailing you privately but never got a response. My email is not blocked so feel free to use it in your reply and we won't derail this post. |
|
|
| BrianGT |
| quote: | Originally posted by yldouright
BrianGT
Nice to see you back from your hiatus. I hope your nuptuals continue to provide comfort the rest of your days. BTW, what did you ever do with your 'wrong way' attenuator? I tried emailing you privately but never got a response. My email is not blocked so feel free to use it in your reply and we won't derail this post. |
I must have missed your mail. I am sorry. Send me another and I will try to answer it this time. I am still trying to catch up with mails.
The attenuator is still sitting in one of my parts boxs, which I have too many to count.
--
Brian |
|
|
| Variac |
How do people feel about the concentric shaft idea? Looks to cost about $4 a pot more, but is the best choice IMHO. And this is a rare opportunity to get them since we are doing a custom order!
It looks like both Brian's supplier and mine are well under $25 ea for 100. In fact the situation I proposed has come to pass: for the price we were expecting to pay each, we can now get 2!!
We still need to look into the other values. BUT it seems that the PEC people work on the basis of orders and don't havre much inventory, so it isn't likely that we can mix to get this price- but maybe since we are getting this large order, PEC could find some overuns from other production to supply also.
Also, we are far from being able to order 100. BUT there are about 25, 25k pots on the list. If each of these people orders 2 instead of 1, we are up to 50, and with the price around half, I suspect a lot of people from the "reasonably priced pot" thread will be interested.
ALSO, Brian is getting ready for another run of gainclones, and I'l bet that if he offers the pots, he could move about 50!
re the mil spec version: First we should determine what makes it mil spec. I don't think we require a stainless shaft insterad of aluminum, or a gasket at the panel. Maybe we don't even need gold terminal since we are soldering to them. Then again, as with the concentric shafts, we could possibly order only the gold terminals without any other mil spec items. Now if the standard shaft is plain steel instead of aluminum then there will be more interest in the stainless version, because some people are concerned about having magnetic materials anywhere in their designs.
all in all VERY good news!!!
Mark
:D |
|
|
| Variac |
Brian wrote to ask me to explain the concentric option better.
Concentric shafts means there is an inner 1/8" inch shaft and around it is a shorter 3/8" shaft . Each shaft is connected to one of the gangs.
The cool thing is that you can get knobs that are the same diameters but with different inner holes for the 2 shaft sizes. The one with the bigger hole has the hole all the way through
So: first you mount the pot in the panel, then you put the knob with the big hole on the outer shaft, then you put another knob with the 1/8" hole partway through, on last. That way you have 2 stacked knobs with the same diameter that you can use as I've described above; either grip them both for volume, or grip only one for balance. |
|
|
| kestrel200 |
I don't know if I'm any indication of everyone else but....my orderat $37 is two 25Ks I'd change my order to TO only 3 if we got to100 orders, but I'd increase that to6 if we were able to get to the 250 order point.
As for the concentric shaft pots I'd also be interested but it would depend on the cost of the knobs also. Variac how much does your supplier charge & what do they look like ( the knobs that is?) I guess I could always make my own knobs..but how long are the shafts? This would of course determine the overall height of the knobs.
By the way here is concentric pot. The only difference is this has a different value for each gang. But you can get the idea.
http://www.goldmine-elec-products.c...tem=41&mitem=95
Thx |
|
|
| sbolin |
| I am not interested in the concentric shafts. I am similar to kestrel200, I will take three at the lower price, but probably would get 4 if we really need to get the orders up to get the lower price. |
|
|
| Variac |
Well, I have ordered knobs from India via a friend I got to know on DIY Audio. He found a shop that makes custom knobs for manufacturers there and worked out the payments and shipping. He did this as a favor, as he is in the software business, but I suspect he would help us again. In fact I think he might be interested in some of these knobs.
I'd say a set of inner and outer knobs (enough for one pot) would cost about $10 delivered
Delivery time is about a month and a half, and since the pots will take a solid month, it could work out.
The important thing is to act quickly if we can figure out what we are ordering and not let this drag on until so much time has passed that people are too impatioent to wait.
I would order 3 at the 100 piece price. It looks like Brians place could get the concentric ones at aboutr $25 ea.
Attached is a photo of another concentric pot. This one is a 4 gang volume control adjusted by the inner shaft, and a balance dual gang controled by the outer, brass shaft. |
|
|
| sbolin |
| Variac, what do the knobs look like? Any pictures? I smell another group buy thread coming... |
|
|
| Variac |
Well, I would have to design them, but I would think basically two cylinders- one 35mm dia. with a big hole all the way through, 10mm thick, with a setscrew.
and another 35mm dia. with a smaller hole not all the way through, 10mm high, and a setscrew. Stacked on the concentric pot shafts, they would look like a cylinder about 35mm (1.5") in diameter and about 20 mm high. Matte silver finish cooooooool :cool:
I'll look for some photos .. I WILL handle ordering the knobs if Brian orders the pots. If he sends the box o pots to me I will mail em all out together. |
|
|
| BrianGT |
| quote: | Originally posted by Variac
Well, I would have to design them, but I would think basically two cylinders- one 35mm dia. with a big hole all the way through, 10mm thick, with a setscrew.
and another 35mm dia. with a smaller hole not all the way through, 10mm high, and a setscrew. Stacked on the concentric pot shafts, they would look like a cylinder about 35mm (1.5") in diameter and about 20 mm high. Matte silver finish cooooooool :cool:
I'll look for some photos .. I WILL handle ordering the knobs if Brian orders the pots. If he sends the box o pots to me I will mail em all out together. |
I don't have time to handle any pot ordering now, i was just helping out research the price so that this will go somewhere. I am looking at ordering more LM3875/LM3886/LM4780 boards, so I will be tied up for quite a while.
--
Brian |
|
|
| sbolin |
[OT]
Brian, any estimate when the rev C boards will be out? I will get one when they come out. Also, any idea when the write up for the LM4780 will be done?
[/OT]
Variac - oh, I thought you already had the knobs. Don't worry about the pics, I was just curious. |
|
|
| KT |
I would definitely get 3 pots at the 100 unit price, perhaps even 4.
If orders get to the 250 price, I will get 4.
I don't mind the concentric shaft if the price savings is substantial. I'm worried, however, that this might not work out in one commercial preamp that I'm retrofitting with the pot. I want to use the existing knob, a 1/4" with a set screw.
Also, this would limit the knob choices severely, wouldn't it? I'm curious as to how the knob will turn out.
KT |
|
|
| Variac |
OK, The concentric shaft is my dream it appears. It has nothing to do with a 4 gang pot or balanced applications.The reason I have always wanted to get this type of pot is that the main complaint about regular two gang pots is that the 2 channels don't track evenly, ie one channel gets louder for awhile and then the other as the knob is turned. A very high quality pot such as this should be a lot better than a cheaper one, but they are only obligated to be within 10% which is pretty bad for our purposes considering that you can make a stepped attenuator with 1% resistors.
Commercial preamps have a balance control which can be used to compensate for this - and some room effects, but most people around here don't want to add yet another pot to their circuit, which might negate the advantages of the fancy volume pot.
I have used a pair of single gang pots, which is wonderful for adjusting the balance, but a pain to use because you have to turn two knobs to adjust the volume, then listen to check the balance.
The concentric pot costs MORE, about $4 , because it needs the 2 concentric shafts.
Concentric pots are used in commercial gear sometimes, with the center knob as a volume control, and the outside shaft knob as a balance control.
My proposal is to use the center shaft as one channel and the outer shaft knob as the other channel. That way if we use knobs of the same diameter for both, it is easy to quickly adjust the volume by gripping both. To adjust balance one just turns one.
Yes, we would be stuck with one knobset, but they are very nice- I will post a photo of one made by this guy. But not the concentric setup.
I realize there are compromises invoved in this order- probably only one value - 25k , for instance, and I will go along with the majority- we need a big order to pull this off!
Hey original guys! are you going to organize this? Brian isn't interested for good reasons, and I haven't volunteered (yet)
Mark
PS. We need a list on the WIKI pages so that people can update the number that they are ordering. Otherwise it is a pain for the organizers to keep updating a list as they have done on this thread before. I can get to it in a day or so, but it isn't hard - whay doesn't someone give it a try- just copy what other group orders have done... |
|
|
| Pars |
| I am not interested in the concentric shafts (I assume this is for building a 4 gang pot for balanced applications?). I would be interested in 2 or 3 stereo pots at the lower price (not sure yet on mix, 50K for sure, possibly a 25K). |
|
|
| Variac |
The concentric shafts has nothing to do with a 4 gang pot or balanced applications. please read my post above. (Pars' post was before mine above but got lost in moderation)
The will probably NOT be a mix of values at this price, so it will probably
just be one value available, probably 25k. |
|
|
| Peter Daniel |
If PEC offers concentric shaft feature at $3 premium, I would strongly suggest to take advantage of it. Those pots are not like Alps or Nobles, and in some of them the tracking difference (between channels) will be quite noticable. Concentric shaft option allows you to perfectly match channel balance, in most frequently used pot position.
Once adjusted, you don't really have to use that feature at all, and can mount a regular knob. |
|
|
| Variac |
Thanks for your input Peter. In the scheme I propose, the balance could be adjusted at any volume- if you feel like it .
You can imagine that I don't want to get into a long discussion about knobs, but I will post a diagram showing how they would work and some photos of knobs ordered in the past.
EDIT : If the outer shaft is actually 1/4" inch then Peter is right!
We should first check if it is . If so, then the major problem- needing one particular knob set is not a problem anymore! |
|
|
| JimD |
At the 100 price I will take two. At the 250 price I will take four.
Concentric shafts are fine if a majority want them or there is an option available when the order is sent in.
Jim |
|
|
| Variac |
This is very difficult to keep track of . To try and help, I have created
a wiki page to list how many concentric 25k pots people might be interested in:
http://www.diyaudio.com/wiki/index....meter+Group+Buy
I'm not trying to hijack the order and Cdoggy is welcome to use this info, but I am willing to do the work for the 25k concentric shaft model only. If he would rather do it, or start a buy of standard dualtrack pots then that's fine with me! :D
We don't yet know if we can mix values- my understanding at this point is we can't.
I know I can get nice matte aluminum knobs that will work and look great. I will soon include diagrams and a photo of a similar knob.
At the moment there is no obligation, its just a convenient way to keep track. Even if you have recently listed how many you are interested in, please also list here on the WIKI. Just click on the "Click here to edit WIKI page" line and add your name and desires to the chart!
Thanks
Mark |
|
|
| Variac |
yldouright says on the order page:
| quote: | | Best pots ever!? Get the $14 price and watch my order increase exponentially. |
Well, its up to everyone to get the numbers up! that's how the price goes down. I don't think 250 is very likely though....:(
Interestingly, since he is only ordering one, exponentially is still only 1, right? ie one cubed is still one :D Is this a trick? ;)
Mark |
|
|
| yldouright |
Variac
Interesting observation but you are neglecting the progression from nil to 1 :) |
|
|
| Variac |
Well, we're up to 12. I don't think we're going to get the 250 price :(
If anyone is intimidated by the Wiki, just e-mail me and I'll add you to it... ie IndyAudi, JimD, x.Onassis, kestrel200, edjosh23, Newbie 88 cdoggy, SvErD |
|
|
| edjosh23 |
well, I could go for two at the $25 price tag, but I'm not big on the concentric pot idea. The current Gainclone I'm going to have the pot way back in the chassis to cut down on hum, so I'm not too sure about it. Now that I think about it (I'm going to add a snubber to my Gainclone, that would cut down on my area to place my pot) I don't know, maybe I could go for 1 of each.
Alright, 1 25kk and on concentric 25kk
Thanks,
Josh
Sorry, I've never used a wiki page and don't know how to add my name |
|
|
| Variac |
Here is how I envisioned the knobs. I guess using shafts to the back of the box could be a problem-hadn't thought of that! but I always think if the enclosures for gainclones as tiny!
The idea is that in casual use, one's fingers end up gripping both knobs at once... |
|
|
| Variac |
| A sample of one of htis guys knobs on my gainclone |
|
|
| sbolin |
| quote: | Originally posted by edjosh23
well, I could go for two at the $25 price tag, but I'm not big on the concentric pot idea. The current Gainclone I'm going to have the pot way back in the chassis to cut down on hum, so I'm not too sure about it. Now that I think about it (I'm going to add a snubber to my Gainclone, that would cut down on my area to place my pot) I don't know, maybe I could go for 1 of each.
Alright, 1 25kk and on concentric 25kk
Thanks,
Josh
Sorry, I've never used a wiki page and don't know how to add my name |
hmmm....I am in the same position Josh is in, I am using extension rods to connect the pot to the knob on front. So unless we can come up with concentric extension rods (two hollow rods maybe?) I will have to withdraw my concentric pots too, and just go with the standard pots. |
|
|
| sbolin |
| quote: | Originally posted by Variac
A sample of one of htis guys knobs on my gainclone |
Variac- Any way you can do a little closer view? It is sort of hard to see. Did your guy do the hand holds, too? Also, can this guy do very simple chassis, too? As much as I love Peter's chassis, I can't afford any more, but I have two more gainclones to build. It would be nice to have a decent looking chassis, but low cost. Or I will just have to win the lotto so I can buy some more of Peter's kits! |
|
|
| edjosh23 |
| quote: |
Also, can this guy do very simple chassis, too? As much as I love Peter's chassis, I can't afford any more, but I have two more gainclones to build. It would be nice to have a decent looking chassis, but low cost. Or I will just have to win the lotto so I can buy some more of Peter's kits! [/B] |
I was not a member of the forum when that chasis group buy went on, and I'm definately up for a chassis group buy!
And on peter's site the chasis are about $200 or so which is over my head |
|
|
| sbolin |
[OT]
I have two of Peter's chassis, and if you can afford them they really are fantastic. My wife isn't into these kits, but she was really impressed with Peter's Integrated kit. Even so, I don't think I could convince her that we really need another one, but if they ever went down to the group buy price of $150 I would get one more. In all honesty I just need a cut rate version, but complete, like Peter's kits - I mean, minimal work to be done on my part other than assembly.
[/OT] |
|
|
| edjosh23 |
By any chance is there a 500kk pot? If so replace the one 25kk with the 500kk, and yes I'm still going for one concentric.
I still don't know how to add to the wiki sorry
Thanks,
Josh |
|
|
| edjosh23 |
OT about chassis
I'm up for getting a chassis group buy, this could be for the new lm3886 kit. With the 3886, a snubber, and the PEC pot we could have a killer :smash: clone, and there is the group buy on rca and binding posts that are high quality and pretty inexpensive too. If someone can tell me who to talk to I'd be interested in organizing or helping atleast.
Thanks,
Josh (trying to keep this thread running, not many things have been said and don't want it to fall off the website :worried: ) |
|
|
| sbolin |
Josh-
I'm interested in that, a nice looking but simple (low cost) chassis, good (but not high end) pots, binding posts, etc would be great. I would like to get the Brian's new LM3886 kit, but really want a nice looking, low cost chassis. I would go for a combined group purchase, but am afraid the interest will be even lower the the PEC pot :cannotbe: |
|
|
| edjosh23 |
Sbolin,
Well if we can come up with a good design and a cheap price tag we can get quite a few people, but definately not as many as P.D. Ofcourse coming with a good design and a cheap price is what everyone tries to do. If not very many people, then we don't do it, or we can have like 10 made or something and use them and try and sell them, at somepoint a noob will want to buy a nice chassis ;) . |
|
|
| cdoggy81 |
Hello all :) I didn't want you guys to think I forgot about all this. I wanted to see where this thing is heading + I've been super busy at work (= not that much free time).
I can also look into the chassis issue as well because my friend can get aluminum & copper sheets/parts. It wouldn't be as refined as Peter's sweet chassis but it would be cheaper. It all depends on how much work you want to put in. Yes, life IS a compromise :D |
|
|
| sbolin |
That would be great, we could put together a cut-rate chassis kit, including POT, switch, etc. You may want to talk to Peter about how much work it is, though ;)
My only request is that it basically have everything drilled out, we just assemble it. Sort of better than a off the shelf box, but not too fancy.
Also, it is probably better etiquette if the 'cheap chassis' becomes its own thread separate from this one. The PEC pot continues here, and the 'cheap chassis' thread move elsewhere. |
|
|
| Variac |
I could spin off a Cheap Chassis thread if you guys want.
Unless there are onbjections, I'll do it in a couple of days |
|
|
| mantisory |
Just a note to tell all you guys that I spoke to a guy at PEC yesterday and he indicated that Digikey will be carrying the log taper pots within the next month or so.
Byron |
|
|
| sbolin |
| Variac- Sounds good. Can you post here when the cheap chassis thread starts? |
|
|
| edjosh23 |
Variac, although I'm going to try and build the 3886 kit in my current chassis (as soon as I can run over to Brian's and get everything:) ) I'm definately in on a chassis group buy, because (hopefully) it will be better than my current chassis.
Thanks,
Josh |
|
|
| Variac |
whoops, I was offering to start a new thread for people that wanted to make a chassis- not for me to organize a chassis buy!
My guy only makes knobs- knobs and more knobs -no chassis. so, until there is more evidence of a chassis project going ahead , maybe we should hold off....
Speaking of coaxial knobs:
here are some that are cheap and available (a good quality in many circumstances ;) )
http://www.mpja.com/productview.asp?product=3003+KN |
|
|
| edjosh23 |
Variac, no offence, but I hope the knobs will look better than that for the PECs. A friend of mine's dad owns a metal workshop, I'm gonna try and talk to him about pricing and if he could actually do that. It's fine to hold off on the chassis group buy (for me atleast) for right now. I'm going to use my current chassis for the lm3886. I'm probably going to make another lm3886 with 100ug BG caps and the pannasonic 22000uf caps on the snubber:D , and a nice chassis is needed for that project:) .
Thanks, any update on the PEC situation?
Josh |
|
|
| Variac |
I said that they were cheap and available- not that they were beautiful! ;) Reminds me of someone I used to know...
They have nothing to do with my knob maker.
Just a practical solution for those that don't want the custom knobs or would need a stop gap solution until the custom ones are ready.
The custom knobs are no problem - they ARE beautiful. The problem is that no one wants the concentric pots OR the custom knobs, it appears - and thats what I was interested in ordering.
EDIT: we are up to 19! we need 50 to make this go....., and 100 to get the great price. |
|
|
| edjosh23 |
up to 19 for the concentric? Can they be apart of the PEC group buy, the normal pots?
Are you getting custom knobs for the normal pots?
Thanks,
Josh |
|
|
| KT |
I'm up for one or two of the concentrics if we get up to the 50 count price.
KT |
|
|
| Variac |
My idea was to order just the 25K concentric pots in enough quantity from DigiKey to get a very low price. The previously discussed order was for a mixed batch of pots from another source. From looking at the previous posts, it appeared that many people wanted various values, but almost everyone wanted some 25k. By ordering about 50 of the 25k pots, which is about what people said they wanted, we coud get them radically cheaper than the lowest price of a mixed order from the other source. Radical as in $27 vs. $40 something. We are not allowed to mix values at this price as the are actually manufactured to our spec.
Controversial points:
-This order would eat into the mixed order and migh compromise it.
But the other order seems to be in limbo, and we are talking about a huge drop in price if we ordronly one value.
- Some don't seem to want concentric pots, but Peter pointed out that the regular ones don't track very well. I have used 2 separate mono pots before, but it becomes a pain to adjust them each time. The concentric seems like the best solution IMHO- but I think some want more knob options. I have offered to have some very nice knobs made, but the minimum order is 100. I can also order matching knobs for selectors, or use with non- concentric knobs, but we need the quantities...... If the concentric pots have an outer 1/4" shaft, then they could be used with a conventional knob and set permanantly to have equal output at the most used listening position using a bit of super glue I guess to lock the shafts together.
My plan cannot proceed until 50 people have signed up for them on the WIKI page. This is not a firm order-just a statement that if things go well, this is pprobably what you will order.
1. Just go to WIKI page
http://www.diyaudio.com/wiki/index....meter+Group+Buy
2. Click on "edit this Page"
3. copy the line of the person who listed his order last and insert it below his.
4. Edit the inserted text to reflect your name and quantities.
5. Save
Hey! we are up to 24 possibly interested people! IF you can't deal with the wiki drop me an e-mail, but I think you can figure it out if you try.....! |
|
|
| edjosh23 |
| quote: | Originally posted by Variac
Brian wrote to ask me to explain the concentric option better.
Concentric shafts means there is an inner 1/8" inch shaft and around it is a shorter 3/8" shaft . Each shaft is connected to one of the gangs.
The cool thing is that you can get knobs that are the same diameters but with different inner holes for the 2 shaft sizes. The one with the bigger hole has the hole all the way through
So: first you mount the pot in the panel, then you put the knob with the big hole on the outer shaft, then you put another knob with the 1/8" hole partway through, on last. That way you have 2 stacked knobs with the same diameter that you can use as I've described above; either grip them both for volume, or grip only one for balance. |
The Alps concentric pot mentioned earlier is a bit confusing. I have one, and it seems to be that the first two gangs (I guess I can call it) are for balancing only, the volume does not adjust them, the back 4 gangs are volume adjusting only. when I originally saw these pots I was thought that simply the balance and volume can be adjected while the input/ouput is on the same gang. Or are the PEC pots different from the Alps? Am I using my multimeter wrong?
P.S. figured out how to add myself the to Wiki, thanks :)
Thanks,
Josh |
|
|
| BrianGT |
| quote: | Originally posted by edjosh23
The Alps concentric pot mentioned earlier is a bit confusing. I have one, and it seems to be that the first two gangs (I guess I can call it) are for balancing only, the volume does not adjust them, the back 4 gangs are volume adjusting only. when I originally saw these pots I was thought that simply the balance and volume can be adjected while the input/ouput is on the same gang. Or are the PEC pots different from the Alps? Am I using my multimeter wrong?
P.S. figured out how to add myself the to Wiki, thanks :)
Thanks,
Josh |
Josh,
The Alps one that I gave you this past weekend is a 4 channel 50k pot, with a 2 channel balance on it also. The outer brass ring is the balance with a detent in the middle, and the inner shaft controls the 4 - 50k channels.
This is different that the PEC pot, which will be a stereo pot, with the outside ring for one channel and the inner shaft for the other channel.
--
Brian |
|
|
| Panelhead |
You will never find happiness using the stereo PEC pots. The matching is not close enough, unless you buy a handfull and cherry pick the closest. Then what do you do with the culls?
I have purchased seven of the log taper mono pots from DigiKey and found that they could be matched up tightly. Ended up having three pairs of 25K pots that matched within 200 ohms. This is less than 1%. One pair was exact, or close as my meter can tell. The actual value varied, 23k to 25K.
In the two preamps having them installed the tracking seems to be perfect. And the sonics are as advertised, first rate. I really think that buying three will get a close matched pair, much closer than the 10% spec of the stereo units.
George |
|
|
| Variac |
Now we've heard another vote against the stereo pots
BUT not against the concentric stereo pots necessarily:
The concentric pots I'm proposing are only 2 gang. One gang controlled by the inner shaft to adjust one channel, the other controlled by the outer shaft to adjust the other channel. If the knobs are designed right, you can choose to grab them both at the same time (since they are the same diameter) and adjust both channels. You could then turn just one or the other to tweak the balance if required. If you are just turning up background music, you probably wouldn't even tweak the balance.
OK the two mono pots require you to do two movements for two channels: adjust the volume of one pot, then the other. I have a passive pre like this and I got tired of the routine.
With the concentric pots , you grab both knobs -which are the same diameter and stacked- to adjust volume. THEN, leaving your hand in the same place, you can shift your grip to only one of the knobs to fine tune any channel inbalance. Or NOT, if the balance is OK
I may be wrong, but I think the concentric pot is cheaper than 2 mono pots, for a given quantity. |
|
|
| edjosh23 |
I definately prefer a single knob (concentric) to a dual mono, I was at BrianGT's house and heard the AMP-1 (dual mono). The dual mono adjustment is hard to get even using pots. I'm sure if they were dual mono stepped attenuators it would be a lot easier to get the same adjustment, but I don't want to spend the money on a stepped attentuator right now (not sure enough with my diy skills).
I understand the PEC concentric pots now, thanks for the explanation
Josh |
|
|
| BrianGT |
| quote: | Originally posted by Variac
With the concentric pots , you grab both knobs -which are the same diameter and stacked- to adjust volume. THEN, leaving your hand in the same place, you can shift your grip to only one of the knobs to fine tune any channel inbalance. Or NOT, if the balance is OK
|
Wouldn't it be better to just find another pot with better tolerances and have a normal stereo pot?
--
Brian |
|
|
| Peter Daniel |
I don't think you'll find a better pot, if carbon is your thing. The tolerances vary and some of those pots measure better than other.
The advantageof dual shaft (in stereo pot) is that you can permanently adjust correct channel balance (for your most freguently used volume setting), pour some epoxy and forget about it ;)
Who said one has to constantly fiddle with dual knobs? |
|
|
| Variac |
Often reviewers complain about tracking in pots at low volumes.
even good ones. As mentioned above, that is a big advantage of switched resistor volume controls. As Peter points out, you can always turn it into a better stereo pot with a bit of glue if you want to use a regular knob.
OK, we need people to want another 25 pots !!! Then the price drops greatly! |
|
|
| cdoggy81 |
still watching how this plays out with some of you guys.....
Let me know if any of you want to be taken off.
Sanjeev, got your email & added you to the "list"
cdoggy81: 25K = 1
tg3: 25K = 1
KT: 50k 100k = 2
sbolin: 2 25k = 2
nbaula: 10K = 1
powerp: 2 10K 50K 100K = 4
SvErD: 2 25K 2 100K = 4
IndyAudi: 2 10K 3 25K 3 50K 2 100K = 10
JimD: 25K = 1
Ipolyakov: 25K = 1
x. onasis: 25K = 1
moving_electron: 100K = 1
kestrel200: 2 25K = 2
edjosh23: 25K = 1
motherone: 2 50K = 2
hoyo55: 2 25K 100K = 3
randytsuch: 50K = 1
Variac: 10K = 1
tommak: 25K = 1
mach1: 2 50K = 2
ghkoopman: 50K = 1
Sanjeev: 25K = 1
------------------
Total = 44
------------------
10K - 6
25K - 19
50K - 11
100K - 8 |
|
|
| moving_electron |
| quote: | Originally posted by cdoggy81
moving_electron: 100K = 1
.....
100K - 8 .. |
Keep in mind I am wanting a 100k linear stereo pot. I am definitely in. |
|
|
| thorstenlarsen |
| You didn`t check the Wiki-page when You counted. Please count me in for 2 pcs 25K logpot and 4 pcs 100K logpot :). Concentric shafts is allright with me. |
|
|
| scone |
| quote: | Originally posted by moving_electron
Keep in mind I am wanting a 100k linear stereo pot. I am definitely in. |
moving_electron, is that even one of the options?
There are basically two shipping prices quoted, one in this thread ($11 flat rate US) and one in the wiki ($4 packing -- is this even a shipping rate?). Which is closer to the real one?
I'd like to order 2 of the 25k log pots, but I would also like to see the price drop to $20. :rolleyes: Anyone care to tell me how unrealistic this is? $30+ for potentiometer and shipping is a tad out of my price range, since that's half the cost of a nice trafo. It's a shame the taiwan alpha dual ganged pots are so hard to find. |
|
|
| KT |
Perhaps to eliminate the confusion we should spin off the 25k dual-concentric PEC pot buy into a separate group buy.
Then we would have that and also the original group buy for PEC pots of mixed values, dual-ganged but not dual-concentric.
Would this make sense? I think would eliminate the confusion and speed things up.
KT |
|
|
| moving_electron |
| quote: | Originally posted by scone
moving_electron, is that even one of the options?
|
Well, I think so. We talked about linear pots it a while back earlier in the thread and I posted a change indicating I would want linear. I will be doing the log faking. |
|
|
| Variac |
OK, here's what happened: I DID spin the concentric 25k pt off into a separate buy , BUT i didn't spliit this thread. I DID create the WIKI
page to track this special sub-order.
Here is where we were, , we had two orders:
The order of all different types at about $40 ea.
The order of 25k concentric at about $27 ea.
we need about 50 orders I believe to make either order work.
For the 25k concentric pot, we need about 50 orders. We have about 25.
I am giving up on the special 25k concentric order.
Apparently the price difference wasn't appealing enough. to generate more interest.
It has a disadvantage in that it also cannibalizes about 20 pieces from the order of all different types.
So now there is one order again- the one for all types at a higher cost.
cdoggy: Please feel free to change the WIKI around to use it to track the order of all types. I will move on to different pots, and am not interested in any of this tyoe |
|
|
| IndyAudi |
| quote: | Originally posted by cdoggy81
still watching how this plays out with some of you guys.....
Let me know if any of you want to be taken off.
IndyAudi: 2 10K 3 25K 3 50K 2 100K = 10 |
I wish to reduce my order from the ten above to the following four :-
1 10K, 2 25K, 1 50K. |
|
|
| tg3 |
Now I'm confused.
Is there a wiki for the multiple values of pots? I can only find the wiki for the 25k concentric pots (now defunct). |
|
|
| Variac |
OK, I converted the wiki to use for orders of multiple values of PEC pots:
http://www.diyaudio.com/wiki/index....meter+Group+Buy
AND:
I listed all the people in the previous list
If you are interested in ordering please check it and correct any
mistakes I made
Of course add yourself if you want to order !
Just copy one of the previous lines to the bottom of the list, then edit it to your name and how many of each you want, and the total.
I deleted the people who want 25k concentric pots- sorry. I didn't want to assume you wanted 25k conventional stereo pots
I am no longer interested in ordering pots |
|
|
| Jamh |
| I added my name to the wikki. Am I too late? |
|
|
| guglielmope |
I'd putted my name in the past list for 25 K pots andit was cacelled.Now I put my name in the new list.
Is too late?
Ciao
Guglielmo |
|
|
| Variac |
I don't think anyone is too late, because nothing has happened yet. I guess I should have included the people who ordered the 25k concentric pots on the new wiki, sorry. As I mentioned, I no longer have any involvement in this order but I hope the wiki helps. Everyone check to make sure I entered your desires correctly!
Mark |
|
|
| Algar_emi |
Just added to the Wiki, 2-5K and 2-100K all stereo pots.
Bye... |
|
|
| mantisory |
| added 2 50k pots top wiki...algar_emi, you may have edited the WIKI wrong - i noticed your numbers don't add up there... |
|
|
| mantisory |
| so, is anything going on with this GB? |
|
|
| KT |
Because the issue of channel tracking error seems to be a concern in these pots, I've decided to use two single pots for my needs even though I hate that kind of arrangement.
I'm not in a position to buy several pots to cherrypick from, so I'm going to withdraw my name from wiki. I'd hate to get a stereo pot to find that it tracks unevenly, especially since they are not cheap.
If I was sure that the tracking was good, I'd go for the stereo pot with no question.
Thanks to all who organized the group buy.
Best,
KT |
|
|
| Gerben |
We have reached the minimum amount and since we won't reach the other price breakpoint in this tempo i say:
GO FOR IT!!!
Anyone ?
:confused: |
|
|
| macka |
I have added 4 10K pots (log) if that is not too late.
macka |
|
|
| mantisory |
i removed myself from the wiki...taking WAY to long here - i'll drive to e-sonic!
Thanks anyways! |
|
|
| cdoggy81 |
mantisory,
Sorry to hear that :( It is VERY hard trying to organize things, make everyone happy, & have other people adding in when they shouldn't.
To all who are still interested, I am now back on track & want to go on with the order. I will be making a list & posting if soon of who wants what. Thanks for being soooooo patient :D |
|
|
| thorstenlarsen |
Hi cdoggy81 !
Nice to see something happening. :) Just go for it.
I`m with you.
Thorsten |
|
|
| kestrel200 |
| Is this GP dead????? |
|
|
| cdoggy81 |
| No. I have been in & out of town for the last few weeks & have not had much time to do anything on the side. After the 1st of the month I will have the time needed to dedicate to this. Thanks again all for being so patient! |
|
|
| SamL |
Hope I am not too late
Updated Wiki with 3 x 25K and 1 x 50K pots.
BTW, without going through all the post, do you take order from New Zealand? Will pay though paypal.
Ta,
Sam |
|
|
| rentiap |
I've decided to remove myself from this wiki as I have decided to build a TVC instead.
Hope this goes thru soon for the rest of you !
Regards.
Craig. |
|
|
| mf1941 |
Hi,
I'm a newbie to this site & rather late for this thread.
I can get the PEC Pots at probably close to 50% of what I see displayed thru the message postings.
Feel free to email me directly for more info, Thanks! |
|
|
|
