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-   -   Stolen Trademark Amplifier from Jim's Audio on EBAY (http://www.diyaudio.com/forums/solid-state/183562-stolen-trademark-amplifier-jims-audio-ebay.html)

crazycloud 20th February 2011 05:03 PM

Stolen Trademark Amplifier from Jim's Audio on EBAY
 
I bought 2 of these boards today from Ebay

High Power Pure Class A amplifier PCB KSA100 ! - eBay (item 320659739390 end time Mar-21-11 10:04:10 PDT)

Can anyone tell me about the finished product?
Does anyone have experience building this?

Has anyone bought toroid transformers to build a supply for it?

I should receive the boards in 3 weeks.
thanks

xslavic 24th May 2011 04:04 PM

hello
 
i dont know why yout got this,but ...im currently building the ksa 100 mkii,& i already got the transformer,its BIG ,has 4 different voltages ,the 38 v is center tapped ....i have all the pieces except Heatsink & case ...& of course have to think of a preamplifier -have any suggestion ?
-if you have any question -ask? (take note that i didnt build it yet )

Kaplaars 25th May 2011 02:56 PM

I have ordered the same boards myself. They are good quality if you ask me.

I am far from finished, but the most resistors are already soldred to the PCB.

http://www.xs4all.nl/%7Emichaelq/Pro...ize_resize.jpg

Have you received the PCB's already?

john65b 25th May 2011 03:50 PM

I have a power supply right from a real KSA-300 for sale... It does not have a transformer, just caps, rectifier, etc...

I also have the Chassis from a real KSA-300 that I don't know if I want to sell...but if price is right....

http://www.diyaudio.com/forums/swap-...ml#post1691248

Kaplaars 25th May 2011 04:25 PM

Nice! I would be really interested if I lived in America, but I live in Holland instead, so I think shipping would be too expensive for me.

neychi 26th May 2011 07:25 AM

Quote:

Originally Posted by Kaplaars (Post 2583154)
I have ordered the same boards myself. They are good quality if you ask me.

I am far from finished, but the most resistors are already soldred to the PCB.

http://www.xs4all.nl/%7Emichaelq/Pro...ize_resize.jpg

Have you received the PCB's already?


Excelent boards. Just be careful. There's a misprint on the boards. Look at the schematic. Resistors 20k and 47k next to the 150R should be 4k7 on the right front side of the boards ;)

Kaplaars 26th May 2011 08:38 AM

How stupid of me, didn't notice the misprint. Thanks for your input Neychi :-)

Do you have this boards as well?

xslavic 26th May 2011 09:17 AM

nice boards, i could sell a pair of ksa 100 mkii if youre interested

neychi 30th May 2011 10:23 AM

Quote:

Originally Posted by Kaplaars (Post 2583984)
How stupid of me, didn't notice the misprint. Thanks for your input Neychi :-)

Do you have this boards as well?

Yes, I have them too ;)

xslavic 30th May 2011 12:21 PM

do you suggest using low ESR caps for the mainboard ?


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