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Old 12th September 2005, 06:23 AM   #1
Villaw is offline Villaw  Cyprus
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Default Ksa-150

I recently got my hands on a good condition Krell KSA-150.

I would be very appreciative to anyone who can send me the schematics as serious tweaking is about to commence.
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Old 12th September 2005, 07:22 AM   #2
ary is offline ary  China
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need too
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Old 13th September 2005, 07:42 AM   #3
Villaw is offline Villaw  Cyprus
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Any good samaritans to provide the Schematics of the KSA150?
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Old 17th September 2005, 09:19 AM   #4
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I've done lots of searching on the bigger Krells, but never found anything other than the common KSA50/100 variants.

Of course, you could always trace it out yourself, and post it here!
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Old 18th September 2005, 05:21 AM   #5
Villaw is offline Villaw  Cyprus
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well I sure as hell wont give up as I have the amp in my living room and is one hell of an amp.

I have compared it with three tube amps and other three solid state and is really a very good one having a character of its own...

It is made of the same material that tanks are made off but comes without the cannon!
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Old 18th September 2005, 09:11 AM   #6
AndrewT is offline AndrewT  Scotland
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Hi Villaw,
do you mean the KSA150 has non-metallic composite for the casing? Or composite overlaid on a metallic casing?

A bit of reverse engineering on your part would be appreciated by many on this forum.
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Old 20th September 2005, 11:06 AM   #7
Villaw is offline Villaw  Cyprus
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the casing is all black steel weighing quite a bit. The sinks are huge and they start to radiate a lot of heat after 20 minutes of foreplay, a true class A babe....

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Old 21st September 2005, 01:41 PM   #8
zchu is offline zchu  China
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en, i also did lots of search on circuit of the krell's amplifiers, but i got few. And i want to ask that does any one have got the circuit of the block one of the Jeff Rowland model-7? Some days before, i digged it out, so hard, and i feel the circuit is so strange.
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Old 21st September 2005, 01:44 PM   #9
Villaw is offline Villaw  Cyprus
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well do you have the ksa-150 schematic that I'm dying for?
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Old 22nd September 2005, 01:22 AM   #10
AVWERK is offline AVWERK  United States
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I don't know if this will help, but I have a schematic for a 150 watt mono version from William Snyder who was their production manager at Krell around the time the amp came out. Not sure how much variance there is between them.


He had a small business called NewEngland Analog at the time (1991) and I bought 2 boards of his circuit design and the design manual.

I still use them to this day, (14 years later) although they draw 1000 watts each at idle (most inefficent state in class A)

If you send me email I can fax the drawing to you, as I can't post it here.

David
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