Hi everyone,
Over the course of the last few months, I read through this thread and made a 23 page summary. If someone would be kind enough to read it and give me some constructive criticism it would be appreciated. Send me a PM and I will email it to you. Perhaps it could be of interest to others...then I would be happy to post it.
Also, to follow up on Pwatt post #7400
"Quote: I've to restore a few small things on Jozua's original so when the boards come out I'll trace a full schematic. "
I am wondering what the status of this original KSA50 mark II-based schematic is?
Regards, Eric
Over the course of the last few months, I read through this thread and made a 23 page summary. If someone would be kind enough to read it and give me some constructive criticism it would be appreciated. Send me a PM and I will email it to you. Perhaps it could be of interest to others...then I would be happy to post it.
Also, to follow up on Pwatt post #7400
"Quote: I've to restore a few small things on Jozua's original so when the boards come out I'll trace a full schematic. "
I am wondering what the status of this original KSA50 mark II-based schematic is?
Regards, Eric
Krell KSA 50 Boards
Eric
The schematic is available here:
http://cgi.ebay.com/High-Power-Pure...ash=item4a9a9684eb&_trksid=p4634.c0.m14.l1262
Regards
Jozua
Eric
The schematic is available here:
http://cgi.ebay.com/High-Power-Pure...ash=item4a9a9684eb&_trksid=p4634.c0.m14.l1262
Regards
Jozua
Eric
The schematic is available here:
http://cgi.ebay.com/High-Power-Pure...ash=item4a9a9684eb&_trksid=p4634.c0.m14.l1262
Regards
Jozua
Thank you, however I already have boards from Pink-Mouse. I was interested in finding out how different the real KSA 50 was from the clone. I though from reading those previous post, that you guy's would pass on the info after repairing your amplifier.
Regards, Eric
You should have it.
Eric
On post #7374 Pwatts write: There are also a few extra sinister components on the original that're absent on the clone, and I'll be stripping a KSA50 Mk2 soon to re-draw a 100% circuit diagramThe board is exactly the same as the Mk-2 version... What you build around that may however be different.
Mark
Was there any extra components, and if so, what were they?
Regards,
Eric
Geez, I wasn't aware of any other boards made up for GB's since I was last around.... Old threads like this never die I guess.
Here's what I have left... And... I will send a pair of boards by USPS for free to anyone that can really substantiate they will be building these amps and that you will not just be throwing the boards in your parts drawer.
1 - Set pink Mouse Boards Copyright 2005, Second version, double sided. Driver board snaps off, There was no O/P device board... you wire the O/P Stage yourself. One driver board already snapped off but you get to have the enjoyment of snapping the other one off unless of course I am asked by you do do it...
2 - Sets of the first board version, single sided, the long narrow board that also has the O/P boards with the close spaced transistors. The drivers, Q-109/110 were difficult to mount and properly heat sink so beware. These boards work ok though. As a bonus you get to snap off tow O/P boards from each of these... I can also supply them pre-snapped off if you like..
1 - Set of used boards like the above but no O/P boards. Solder on the pads but can be carefully wicked off before use. No damage to boards.
2 - Sets Aleph X boards Rev 1.0. Nothing to snap off of these... Guaranteed to be very dull, boring PCBs! And you have an an amp that runs "otter n ell"
4 - Prototype boards for KSA-50 and KSA-100 which I am keeping as they were very expensive to have made!!
Make your posts here to let me know who wants what...
Mark G.
Here's what I have left... And... I will send a pair of boards by USPS for free to anyone that can really substantiate they will be building these amps and that you will not just be throwing the boards in your parts drawer.
1 - Set pink Mouse Boards Copyright 2005, Second version, double sided. Driver board snaps off, There was no O/P device board... you wire the O/P Stage yourself. One driver board already snapped off but you get to have the enjoyment of snapping the other one off unless of course I am asked by you do do it...
2 - Sets of the first board version, single sided, the long narrow board that also has the O/P boards with the close spaced transistors. The drivers, Q-109/110 were difficult to mount and properly heat sink so beware. These boards work ok though. As a bonus you get to snap off tow O/P boards from each of these... I can also supply them pre-snapped off if you like..
1 - Set of used boards like the above but no O/P boards. Solder on the pads but can be carefully wicked off before use. No damage to boards.
2 - Sets Aleph X boards Rev 1.0. Nothing to snap off of these... Guaranteed to be very dull, boring PCBs! And you have an an amp that runs "otter n ell"
4 - Prototype boards for KSA-50 and KSA-100 which I am keeping as they were very expensive to have made!!
Make your posts here to let me know who wants what...
Mark G.
Anybody selling the boards still? Are the boards from EBAY any good? Thanks!
http://www.diyaudio.com/forums/solid-state/31077-krell-ksa-50-pcb-802.html#post1918834
Krell KSA-50 Building Wiki
Attached is the Krell KSA-50 building wiki (a PDF I saved in August). I also just posted the contents of this PDF of to the wiki page. There is no formatting yet, and the links don't work, but at least the substance is there.
Attached is the Krell KSA-50 building wiki (a PDF I saved in August). I also just posted the contents of this PDF of to the wiki page. There is no formatting yet, and the links don't work, but at least the substance is there.
Attachments
Old KSA50 wiki : www.diyaudio.com/oldwiki/index.php?page=Building+guide
Hello ,
Can anyone tell me if this is a good source ?
Link for KSA100 Boards ...
High Power Pure Class A amplifier PCB Krell KSA100 ! - eBay (item 320421139127 end time Nov-05-09 08:40:11 PST)
If not are there any others ?
regards,
Can anyone tell me if this is a good source ?
Link for KSA100 Boards ...
High Power Pure Class A amplifier PCB Krell KSA100 ! - eBay (item 320421139127 end time Nov-05-09 08:40:11 PST)
If not are there any others ?
regards,
Yep, still have quite a few. Have donated a couple hundred $$ to DIYAudio, would like to send more.....
Bob G.
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