Krell KSA100 vs AlephX

lumanauw · 29th February 2004, 07:56 AM

Does anyone has listen to both Krell KSA100 and DIY AlephX100? Which is better sounding? I wanted to built DIY amp based on schematics offered by enthusiast on this website. Which one?
Inspite of excellence of class A, I wanted the good sounding class AB.

lumanauw · 2nd March 2004, 12:35 AM

Are both amp works in class AB?

AudioFreak · 2nd March 2004, 01:04 AM

Quote:

Originally posted by lumanauw
Are both amp works in class AB?

Aleph-X is Class A.

Nelson Pass · 2nd March 2004, 01:23 AM

I recall that the KSA100 is also Class A.

Luke · 2nd March 2004, 01:40 AM

Has anyone got a pcb for this amp?
Would like to try it sometimes, but it seems not many people build it on this forum for some strange reason?

lumanauw · 2nd March 2004, 01:43 AM

Sorry, alephX is definitely single ended amp. What I mean is X100 (The folded cascode power amp). Is X100 (DIY version) works in class AB? The KSA100 has bias VR, so maybe it can be working in class AB and A.

Nelson Pass · 2nd March 2004, 01:59 AM

That is correct, you can bias the KSA down to AB - in fact I've
tested it under those conditions and it runs just fine.

The Aleph X? No. It is terrible at Class AB. An ordinary X
amp will do it though.

lumanauw · 2nd March 2004, 10:04 AM

No, no, Mr. Pass, I wrote down wrongly. It shouldnt be alephx, but x100 (folded cascode amp). How this diy x100 compared with krell ksa100 in AB mode?

BTW, I sure like to test and find out the circuit of as many power amp. In your prediction, how many circuits have you seen, heard (other people's design offcourse)? Anything special that you could mentioned?

MikeW · 2nd March 2004, 11:10 AM

How did the tests come out? Is it worth doing a board?

29th February 2004, 07:56 AM	#1
lumanauw diyAudio Moderator Emeritus Join Date: Oct 2002 Location: Bandung	Krell KSA100 vs AlephX Does anyone has listen to both Krell KSA100 and DIY AlephX100? Which is better sounding? I wanted to built DIY amp based on schematics offered by enthusiast on this website. Which one? Inspite of excellence of class A, I wanted the good sounding class AB.

2nd March 2004, 11:10 AM	#9
MikeW diyAudio Member Join Date: Sep 2002 Location: North of Boston	tests How did the tests come out? Is it worth doing a board? __________________ MikeW

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2nd March 2004, 12:35 AM	#2
lumanauw diyAudio Moderator Emeritus Join Date: Oct 2002 Location: Bandung	Are both amp works in class AB?

2nd March 2004, 01:23 AM	#4
Nelson Pass The one and only Join Date: Mar 2001	I recall that the KSA100 is also Class A.

2nd March 2004, 01:40 AM	#5
Luke diyAudio Member Join Date: Sep 2001 Location: Wellington NZ	Has anyone got a pcb for this amp? Would like to try it sometimes, but it seems not many people build it on this forum for some strange reason?

2nd March 2004, 01:43 AM	#6
lumanauw diyAudio Moderator Emeritus Join Date: Oct 2002 Location: Bandung	Sorry, alephX is definitely single ended amp. What I mean is X100 (The folded cascode power amp). Is X100 (DIY version) works in class AB? The KSA100 has bias VR, so maybe it can be working in class AB and A.

2nd March 2004, 01:59 AM	#7
Nelson Pass The one and only Join Date: Mar 2001	That is correct, you can bias the KSA down to AB - in fact I've tested it under those conditions and it runs just fine. The Aleph X? No. It is terrible at Class AB. An ordinary X amp will do it though.

2nd March 2004, 10:04 AM	#8
lumanauw diyAudio Moderator Emeritus Join Date: Oct 2002 Location: Bandung	No, no, Mr. Pass, I wrote down wrongly. It shouldnt be alephx, but x100 (folded cascode amp). How this diy x100 compared with krell ksa100 in AB mode? BTW, I sure like to test and find out the circuit of as many power amp. In your prediction, how many circuits have you seen, heard (other people's design offcourse)? Anything special that you could mentioned?

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