Krell KSA 50 PCB

[bremen nacht]

I asked for 4 PSU boards and am dropping from PSU boards , you can have 2 of them. I am still in for the main amp boards.

K-

ah, cheers but it's actually the main boards I'm after.

 

[still4given]

oops

 

[VT67]

Hi guys

Two of these where delivered today, so each channel has his own transformer now. Never used those R-core tranny's before so I don't know if there any good.
I got them from FG Audio Systems in Germany
http://www.feickert.de/html/r-core_trafos.html

Regards

 

[jacco vermeulen]

R-cores are nice.
I had a couple of them i ripped out of a broken Proton D1200, good performers, too pricy at regular rates.
(the Proton D1200 was a bargain in the 80s).

Good catch, Walter. The O-cores they still list are attractive too.

 

[VT67]

Hi Jacco

I paid them 60€ a piece, so that is more or less the price I would pay for a toroid with the same specs.
Only problem is now to find something to cover them🙁

Cheers

The O-cores they still list are attractive too.

I know, but none of them had the right specs for the Klone.

 

[jacco vermeulen]

Maybe interesting for the ones who can get their hands on genuine Toshiba's instead of MJE's , bottom 2 lines of the honorable Mr Hansen:

http://www.diyaudio.com/forums/showthread.php?s=&postid=680143#post680143

 

[troystg]

Mark-

I saw the wiki was closed, but I did not notice a call for payment.

Have you started accepting payments for the boards yet?

 

[pinkmouse]

I think Mark was going to email all on the list with payment details, but I could be wrong... It wouldn't hurt to drop him a line anyway 😉

 

[Mark A. Gulbrandsen]

The WIKI was started to see if there was enough interest in the new boards that Al designed. I did receive a few more e-mails from people that signed up but I still have not heard from over half the folks that signed up on it. While I would be glad to start coillecting the $$ I can't until the board price is nailed down exactly(bases on quantity purchased) and also exactly how many want to buy them. I do know for sure that the power supply boards will be pricecd aat 14.00 each and thats basaed on 100 quantity!!

AGAIN, THOSE THAT HAVE NOT E-MAILED ME REGARDING THE WIKI PLEASE DO SO ASAP.

Jacco,

I will e-mail you a list of the people that I have gotten replys from by tommrrow night.

Thanks,

Mark

 

[troystg]

Mark-

Email sent.

 

[Mark A. Gulbrandsen]

I sent the new file from Al to Advanced last night and we will hopefully have the pricing by the time I get back to my motel tonight. I will post it and then start accepting payment in the next day or so......

Got e-mail from four more people on the WIKI.

Mark

 

[lgreen]

Measurements of My Clone

Here are some fuzzy screen shots of my clone in action.

Output is into 4 ohm (closer to 5 ohm) 100 watt resistor.

4 KHz sine input, output at 5v/div (top trace, ch2). Looks like I'm inverting, is this an inverting design or did I cross some wires?

An externally hosted image should be here but it was not working when we last tested it.

4 KHz square wave output, 5v/div (ch 2).

An externally hosted image should be here but it was not working when we last tested it.

20 KHz square wave output 5v/div (ch 2).

An externally hosted image should be here but it was not working when we last tested it.

What do you think of the square response? No ringing? I used 47pF for c105 and c106 as I recall.

 

[ShinOBIWAN]

I sent the new file from Al to Advanced last night and we will hopefully have the pricing by the time I get back to my motel tonight. I will post it and then start accepting payment in the next day or so......

Got e-mail from four more people on the WIKI.

Mark

Mark, I sent you mail a couple of days ago regarding the boards I put down in the WIKI.

Any chance you could pass on your address the weight and or size of 6 board and a link to the couriers online pricing caclulator? I can then work out the price.

When do you want payment BTW?

My email is zeroex_15@hotmail.com

Thanks,
Ant

 

[VT67]

Hi guys

I almost have all the parts! Now if I just had the time to build the thing together!🙄

Regards

 

[steenoe]

I almost have all the parts!

Nice kit, you have there😉

Steen😎

 

[Mark A. Gulbrandsen]

Tonight I am in the process of compiling the list of those that have sent me e-mail so I can see who has and has not responded yet.... this is so Jacco can send you an antagonizing e-mail and get those in hiding to respond.

Please hang in there for another day or two and I will post the price per board and the weight so you can calculate postage on your total order.

Please keep in mind that I also have to work while I am on the road..... making it take a little longer to get this list together than it would otherwise.....

Lgreen, Your traces look identical to mine so I guess mine is working ok too.....😎

Thanks,

Mark

 

[ShinOBIWAN]

Thanks Mark 🙂

 

[Jozua]

Boards Order

Mark

Please post the list of people who have responded to your request. At least then one will know whose mail you have received and whose mail has been "lost".

Thanks


Jozua

 

[Mark A. Gulbrandsen]

Just so everyone is clear as to who I have gotten mail from here is the list........ Its hard to respond to everyone while I
am on the road but I will be home the middle of next week and promise to give better service then.

Mark
________________________________________


Billlc

K-amps

ShinOBIWAN

rbstag

greyhorse

bg40403

RKH

Anthony2181

KMJ

GeWa

apassgear

buglehead

John Ostermeyer

FrancoB

jacco

AndrewT

valvemaniac

gengis

Grimberg

audiophilenoob

Dennis Hui

Still4Given

Stuart Easson

spind

steenoe

 

[Mark A. Gulbrandsen]

Here are the specs on the prduction boards......

.093" FR-4

4" X 8.227"

SMOBC Plating

2 oz copper

Green solder mask both sides... Sorry no Pink available.....

White legend on top side

Each board is one piece and includes 1 main board, 1 driver board, and 2 output boards. There is no plan to produce seperate ooutput boards at this time. The following prices are based on 100 quantity made of each board.

KSA-50 Board price with 4 week lead time $14.00 each u.s.

Power Supply board price was already set at $14.00 each u.s.

I won't start accepting funds till Monday the 18th and you will start receiving e-mail from me on that day about payment and shipment. Excess funds left over will go to the DIY Audio site.

Hopefully Jacco is working on contacting the remaining people that signed up ono the WIKI that have not e-mailed me.

Thanks for everyones patience while I have been on the road!!

Mark