Gonna Try Building a 1kW Class D Amp for Only $396
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Joined: Mar 2008
Posts: 1,378
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OP
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Joined: Mar 2008
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Just put the order in for some parts to try building my own Class D Two Channel Amplifier. Saw this thread and it really intrigued me: http://www.audiocircle.com/index.php?topic=76400.0(For anyone even remotely interested in DIY type stuff, it's a fascinating thread) After contacting the owner of the company who makes the amp boards(Tom, who seems like a really nice guy), I ordered a large toroidal transformer (1000VA), heavy duty power supply, and two amplifier modules which should output 500W each easily when bridged. Since they are Class D, they are much more efficient (>90% vs 50-60% for class A/B) and should put out much less heat. THD numbers look really good too. I should be getting the parts by this weekend and will do a quick assembly first to test things out and see how it sounds. I'll let you guys know how it goes.
LFR1100 Actives,QS10HPx2,QS8x2,EP800,M3x4,M3x2 (Wood),M5HPx2 (Wood),AxiomAir,ADA1500-8,ADA1500-7
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Re: Gonna Try Building a 1kW Class D Amp for Only $396
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Joined: Dec 2008
Posts: 6,928
axiomite
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axiomite
Joined: Dec 2008
Posts: 6,928 |
Steve, did you check out the Sure Electronic DIY amp boards at Parts Express by any chance? not sure if it's comparable at all to what you're looking at.
Half of communication is listening. You can't listen with your mouth.
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Re: Gonna Try Building a 1kW Class D Amp for Only $396
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Joined: Mar 2008
Posts: 1,378
connoisseur
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OP
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Yep, they're in my bookmarks (as well as some others). Sure Electronics output power was much lower, and the THD+N at rated power was REALLY high (10%). THD+N at rated power for the modules I bought is <1%.
LFR1100 Actives,QS10HPx2,QS8x2,EP800,M3x4,M3x2 (Wood),M5HPx2 (Wood),AxiomAir,ADA1500-8,ADA1500-7
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Re: Gonna Try Building a 1kW Class D Amp for Only $396
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Joined: Jan 2004
Posts: 13,840 Likes: 13
shareholder in the making
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shareholder in the making
Joined: Jan 2004
Posts: 13,840 Likes: 13 |
do they furnish the instructions? Also, what about the case? Can you provide links?
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Re: Gonna Try Building a 1kW Class D Amp for Only $396
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Joined: May 2003
Posts: 18,044
shareholder in the making
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shareholder in the making
Joined: May 2003
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I'll be VERY interested to find out how this goes!
I am the Doctor, and THIS... is my SPOON!
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Re: Gonna Try Building a 1kW Class D Amp for Only $396
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Joined: Mar 2008
Posts: 1,378
connoisseur
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OP
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They supply individual parts and kits. Instructions are supplied too (also on their website): http://classdaudio.com/index.php/You're basically on your own for the case, but just about any enclosure would work. For now, I'm just going to assemble it on a block of wood. If it sounds great (like most have said), I'll probably build a nice wood enclosure. Tom also buys in bulk and will pass the savings on to you. The 1000VA toroidal transformer would go for $100 alone unshipped if I tried to buy it myself (sucker weighs in at 18 lbs alone). Read through the thread link I posted above if you get a chance. There are some wonderful examples of systems put together, as well as some nice DIY cases. I'm pretty excited about this...
LFR1100 Actives,QS10HPx2,QS8x2,EP800,M3x4,M3x2 (Wood),M5HPx2 (Wood),AxiomAir,ADA1500-8,ADA1500-7
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Re: Gonna Try Building a 1kW Class D Amp for Only $396
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Joined: Apr 2007
Posts: 4,877
connoisseur
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connoisseur
Joined: Apr 2007
Posts: 4,877 |
Please update us with a photo or two of your build and your thoughts after completing it and taking for a test drive.
-David
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Re: Gonna Try Building a 1kW Class D Amp for Only $396
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Joined: Mar 2005
Posts: 7,463 Likes: 1
axiomite
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axiomite
Joined: Mar 2005
Posts: 7,463 Likes: 1 |
Looks good, Steve! I'm excited for you. Let us know how the build goes!
*********** "Nothin' up my sleeve. . ." --Bullwinkle J. Moose
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Re: Gonna Try Building a 1kW Class D Amp for Only $396
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Joined: Jul 2006
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Founder, Axiom Upgrade Club shareholder in the making
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Founder, Axiom Upgrade Club shareholder in the making
Joined: Jul 2006
Posts: 12,077 Likes: 7 |
Very cool. I may have to look into this when I need more channels. Good luck!
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Re: Gonna Try Building a 1kW Class D Amp for Only $396
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Joined: Feb 2009
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connoisseur
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connoisseur
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That Class D Audio kit gets my thumbs up too.
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