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Chip Amps Amplifiers based on integrated circuits |
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#11 | |
diyAudio Member
Join Date: Apr 2006
Location: East TN
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Quote:
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#12 |
diyAudio Member
Join Date: Aug 2003
Location: Germany
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Hi orthoefer,
thanks for your comment. The case was built by a member of another forum who tried to mimic the classic Naim cases to provide better visual integration of DIY efforts. ;-) At one point he sold them on eBay. The inner chassis is made of alloy, the outer case is made of perspex. I added the separators for the toroid and the passive pre, heat sink, plugs, etc. Actually, this is my 3rd GC, and I wanted to build something more ... erm... definitive, if you catch my drift. Best, Oliver |
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#13 |
diyAudio Member
Join Date: Dec 2005
Location: USA
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Just a quickie before I take some more shots of the innards, but here is my latest "finished" amp built inside of an old SCSI external enclosure. Those babys are GOLDEN for compact chipamps, and you can usually find them surplus for dirt cheap or free. Get busy with the cutting wheel and dremel, slap on a new coat of paint, and you have a great, roomy enclosure.
I still have to add power lights on the front (which is 3/16" aluminum plate) and get some better feet, but the guts are done. I am planning on using this as an office amp for my iPod and computer, so there is no need for volume control since all of the devices I will be using with it will have volume controls built in. |
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#14 |
diyAudio Member
Join Date: Jun 2004
Location: Capital City Area
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BrianGT LM3875 kit. Two alternative power supplies:
- Dual mono 1500 Panasonic FC + 100 uF Black Gate per rail. - 10000 uF Panasonic FC (snubberized) + 100 uF Black Gate per rail Transformers 120 VA each. Enclosure is still unfinished. HD pics here: http://www.dvdplaza.fi/galleria/show...00&ppuser=3104
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#15 |
diyAudio Member
Join Date: Dec 2003
Location: Toronto Canada
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here is one some may have seen before but now its finished
![]() It is Briangt original 3875 boards with shared dual rectifier supply. its only 80VA transformer (in the can) 10,000uf PSU caps snubberized in the carlosfm style. |
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#16 |
diyAudio Member
Join Date: Dec 2003
Location: Toronto Canada
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and the top/front
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#17 |
diyAudio Member
Join Date: Apr 2004
Location: In a dream, Please don't wake me...
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I still use this one as a general test amp. Works great, last long time!
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__________________
Troy Thinking positive doesn't make things better, it makes you a better person. |
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#18 |
diyAudio Member
Join Date: Apr 2004
Location: In a dream, Please don't wake me...
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I don't know why I started *** first, I certainly don't usually walk that way..
![]() Anyway here is another veiw. One more to follow.
__________________
Troy Thinking positive doesn't make things better, it makes you a better person. |
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#19 |
diyAudio Member
Join Date: Apr 2004
Location: In a dream, Please don't wake me...
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And final.
BrianGT LM3875 Premium kit stock. Custom made enclosure using heat sinks and parts from Steve @ Apex.jr.
__________________
Troy Thinking positive doesn't make things better, it makes you a better person. |
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#20 |
diyAudio Member
Join Date: Dec 2005
Location: USA
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More pictures of the guts of my amp. This thing isn't what I would call "good" with regard to wiring or layout, but hum is non-existant and the sound quality is excellent. It's a dual mono due to a great deal on 80VA transformers at ApexJr that I couldn't pass up (who are great to deal with, btw). Hidden under the torroids are 2X2200uf/rail (250V!!!) caps that were salvaged that I had laying around (4400uf X 4 rails total). They take up a ton of space, but work great with this configuration.
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