Ksa-150

Villaw · 12th September 2005, 06:23 AM

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.

ary · 12th September 2005, 07:22 AM

need too

Villaw · 13th September 2005, 07:42 AM

Any good samaritans to provide the Schematics of the KSA150?

pinkmouse · 17th September 2005, 09:19 AM

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!

Villaw · 18th September 2005, 05:21 AM

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!

AndrewT · 18th September 2005, 09:11 AM

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.

Villaw · 20th September 2005, 11:06 AM

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....

zchu · 21st September 2005, 01:41 PM

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.

Villaw · 21st September 2005, 01:44 PM

well do you have the ksa-150 schematic that I'm dying for?

AVWERK · 22nd September 2005, 01:22 AM

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

12th September 2005, 06:23 AM	#1
Villaw diyAudio Member Join Date: Feb 2005 Location: Ni	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. __________________ Nick

13th September 2005, 07:42 AM	#3
Villaw diyAudio Member Join Date: Feb 2005 Location: Ni	Any good samaritans to provide the Schematics of the KSA150? __________________ Nick

17th September 2005, 09:19 AM	#4
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	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! __________________ Al I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort

18th September 2005, 05:21 AM	#5
Villaw diyAudio Member Join Date: Feb 2005 Location: Ni	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! __________________ Nick

20th September 2005, 11:06 AM	#7
Villaw diyAudio Member Join Date: Feb 2005 Location: Ni	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.... __________________ Nick


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12th September 2005, 07:22 AM	#2
ary diyAudio Member Join Date: Jul 2005 Location: HangZhou	need too

18th September 2005, 09:11 AM	#6
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	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.

21st September 2005, 01:41 PM	#8
zchu diyAudio Member Join Date: Sep 2005	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.

21st September 2005, 01:44 PM	#9
Villaw diyAudio Member Join Date: Feb 2005 Location: Ni	well do you have the ksa-150 schematic that I'm dying for? __________________ Nick

22nd September 2005, 01:22 AM	#10
AVWERK diyAudio Member Join Date: Jan 2004 Location: OC,Calif.	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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