"ST151" 100W amplifier

sixtek · 28th April 2007, 10:07 PM

Hi folks,

So here it is. With photos and full documentation.
My amplifier design, called "ST151", that uses cheap and easly available, industrial standard parts.
I gladly suggest to build it for anyone.

(Please don't flame the thread with any audiophile modificaton. ST151 is not a state-of-art design, uses nothing new or special circuit. But it's designed properly > good sound quailty, cheap parts, stability.)

[First attachment: parts list, performance, etc.]

sixtek · 28th April 2007, 10:10 PM

[Second attachment: pcb]

sixtek · 28th April 2007, 10:11 PM

[Third attachment: schematic]

sixtek · 28th April 2007, 10:13 PM

[Fourth attachment: parts placing on PCB]

sixtek · 28th April 2007, 10:14 PM

[Fifth attachment: photo 1]

sixtek · 28th April 2007, 10:15 PM

[Sixth attachment: photo 2]

sixtek · 28th April 2007, 10:16 PM

[Seventh attachment: photo 3]

sixtek · 29th April 2007, 02:43 PM

Any comments?!

darkfenriz · 29th April 2007, 02:48 PM

Isn't C13 too big?
Have you tried ~47n?

Stormrider · 29th April 2007, 04:05 PM

So, as an estimate, whats the cost for stereo amp using this circuit minus the heatsinks and case? I'm not very knowledgable in the design of amplifiers but i can build and work on them. I've been keeping my eye out for something i could use for the upper half of my semi-active 3 ways and this looks like it could work...

29th April 2007, 04:05 PM	#10
Stormrider diyAudio Member Join Date: Apr 2006 Location: Connecticut	So, as an estimate, whats the cost for stereo amp using this circuit minus the heatsinks and case? I'm not very knowledgable in the design of amplifiers but i can build and work on them. I've been keeping my eye out for something i could use for the upper half of my semi-active 3 ways and this looks like it could work... __________________ AJ

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29th April 2007, 02:43 PM	#8
sixtek diyAudio Member Join Date: Jan 2007	Any comments?!

29th April 2007, 02:48 PM	#9
darkfenriz diyAudio Member Join Date: Jun 2004 Location: Warsaw	Isn't C13 too big? Have you tried ~47n?

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