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Chip Amps Amplifiers based on integrated circuits |
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#2231 |
diyAudio Member
Join Date: May 2009
Location: Riga, LV
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My second LM3857 Non inverting amplifier ( 200VA 2x24V transformer; standard small bridge rectifiers with small heat-sinks ;4x4700uf filter capacitors + 4x2200uf bypass caps + 4x 1uf, snubbers caps under PSU board ; p2p installation; compact enclosure from e-bay; salvaged stepped attenuator
![]() No hum no noise , small DC offset. I will try to measure amp later :
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My DIY so far: two Leach amps, Pass AB100, Pass F5, B1 buffer, Hiraga le monstre, two LM3875, LM1875, OPA549, 6C33C SE, GU32 PP, 6p3c-e PP, Marsh headphone amp.Phono - OBH-8se, Pacific RIAA, inDiscreet Phono. In progress: Whammy headphone amp. |
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#2232 | |
diyAudio Member
Join Date: May 2011
Location: Danbury, CT
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Quote:
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redjr |
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#2233 | |
diyAudio Member
Join Date: May 2011
Location: Danbury, CT
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Quote:
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redjr |
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#2234 |
diyAudio Member
Join Date: May 2009
Location: Riga, LV
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If i remember correctly member siliconray from diyaudio also have these enclosures. This enclosure have only rear panel mains socket included. Front switch done by me.
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My DIY so far: two Leach amps, Pass AB100, Pass F5, B1 buffer, Hiraga le monstre, two LM3875, LM1875, OPA549, 6C33C SE, GU32 PP, 6p3c-e PP, Marsh headphone amp.Phono - OBH-8se, Pacific RIAA, inDiscreet Phono. In progress: Whammy headphone amp. |
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#2235 |
diyAudio Member
Join Date: Dec 2009
Location: Bay City, Michigan
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Thanks redjr, I posted a link over on the Pass forum where things run hotter. Maybe someone there will give it a shot.
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Bob M. "Arrange Whatever Pieces Come Your Way." |
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#2236 |
diyAudio Member
Join Date: Jul 2008
Location: Santa Clara, CA
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they are buyable on ebay from china.
just search ebay. sometimes they come up when you search for 'pga2311' since many are sold as boxes for preamps.
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My Photostream:http://www.flickr.com/photos/linux-works/ |
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#2237 |
diyAudio Member
Join Date: May 2011
Location: Danbury, CT
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I've used several of those style enclosures from China and very happy with them. The one in question just looked a little 'dresser' hence the question. I was particularly intrigued by the push-button switch with the flange ring on the front. Looks fancier than what I use.
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redjr |
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#2238 | |
diyAudio Member
Join Date: Sep 2008
Location: in my house!
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#2239 |
diyAudio Member
Join Date: Jan 2006
Location: Victoria, Australia
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@osscar: very nice build. It looks like you have some speaker protection in there too.
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#2240 |
diyAudio Member
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I agree
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