A SAP15 based power amp

Leolabs · 20th March 2007, 01:38 AM

The schematic in PDF.

Leolabs · 20th March 2007, 01:44 AM

The boards:

Leolabs · 20th March 2007, 01:48 AM

Bridges and SAPs:

Leolabs · 20th March 2007, 01:49 AM

Internal:

Leolabs · 20th March 2007, 01:51 AM

Close up of the board:

Bonsai · 20th March 2007, 12:35 PM

. . . . nice, simple and clean Leolabs. What speakers are you using and how does it sound?

cs · 20th March 2007, 12:44 PM

Quote:

Originally posted by Leolabs
The schematic in PDF.

Looks very elegant.

Do you have measured results, or listening tests ?

Leolabs · 21st March 2007, 01:49 AM

Thank you guys for interested.Even though it just stay at my place for not more than 2 weeks(as a my friend of mine ask me to help him build this amp),still quite impressive with it's performance.

First time set-up at my place:
-Source:a CDROM,a Zoran chipset based DVD player.That's all I have at this moment,planning to buy a H/K HD970 later.
-Speakers:KEF iQ1.

First impression was very powerful bass yet not overpowered,but lack of clarity/details,and not so good at voices(with CDROM direct in).Then swithed to the DVD player which output level is higher,it was a whole different story then.Clarity/details improved significantly and voices(tested with Norah Jones and Frank Miller).Listen to Aaron Copland's Fanfare for the Common Man was fun,wide soundstage,solid
bass.Guess that have to partner it with high output sources/preamps.

Later,my friend brought it to the local hi fi shop(and the people there was quite impressive with this DIY amp) to choose his speakers and finally got himself a pair of Yamaha NS525F instead a pair of Mission due to the $$$ problem,LOL!

Leolabs · 23rd March 2007, 03:11 AM

Not much people interested in SAP15??????

Ipanema · 23rd March 2007, 07:50 AM

Nice design. Is it a folded cascode front end?

20th March 2007, 12:35 PM	#6
Bonsai diyAudio Member Join Date: Aug 2006 Location: Taipei, Taiwan	. . . . nice, simple and clean Leolabs. What speakers are you using and how does it sound? __________________ bonsai http://www.hifisonix.com/

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21st March 2007, 01:49 AM	#8
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	Thank you guys for interested.Even though it just stay at my place for not more than 2 weeks(as a my friend of mine ask me to help him build this amp),still quite impressive with it's performance. First time set-up at my place: -Source:a CDROM,a Zoran chipset based DVD player.That's all I have at this moment,planning to buy a H/K HD970 later. -Speakers:KEF iQ1. First impression was very powerful bass yet not overpowered,but lack of clarity/details,and not so good at voices(with CDROM direct in).Then swithed to the DVD player which output level is higher,it was a whole different story then.Clarity/details improved significantly and voices(tested with Norah Jones and Frank Miller).Listen to Aaron Copland's Fanfare for the Common Man was fun,wide soundstage,solid bass.Guess that have to partner it with high output sources/preamps. Later,my friend brought it to the local hi fi shop(and the people there was quite impressive with this DIY amp) to choose his speakers and finally got himself a pair of Yamaha NS525F instead a pair of Mission due to the $$$ problem,LOL!

23rd March 2007, 03:11 AM	#9
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	Not much people interested in SAP15??????

23rd March 2007, 07:50 AM	#10
Ipanema diyAudio Member Join Date: Jun 2004 Location: KL	Nice design. Is it a folded cascode front end?

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