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15th April 2004, 09:52 PM
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#1 |
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diyAudio Member
Join Date: Feb 2004
Location: Racine, Wisconsin
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Pics of the billet clone
I'm a newb but here are some of the construction techniques I used.
I built the interconnects directly into the amp boards. The interconnects are three braided pairs of UTP and then split out to solids & stripes. They go to Dayton solder type gold plate connectors. They are covered with the braided shield from some old IBM twinax then finished with shrink. I also used the twinax shield for the 110V to the front DPST switch. Binding posts (Dayton gold stuff,again) are soldered. The front and rear panels are from 1" aluminum plate laying around. The rear billet was milled to be an integral heat sink. I think that it provides only adequate heat dissipation. The binding posts are mounted in an insulating nylon block. Cabinet sides are walnut, base is MDF. The front panel is attached to the walnut sides by 10/32 epoxied thread inserts. The lid is 1/8" aluminum tread plate. I am powering some line arrays that I built last month (http://www.diyaudio.com/forums/showt...532#post368532). The sound is very, very clean. Crisp. Absolutely no hum or buzz. The amp runs a little warm at high volumes but the nominal impedance of the speakers is only ~4.2 ohms. I will avoid any comparisons to my current Adcoms other than saying the only discernable difference is the 50WPC amp's bass is less than the 350WPC amp's bass. Duh? What would I do differently? I'll build the next one with a pot and avoid the whole preamp thing. I'll also build with larger heatsinks. I don't think that a pound of mass per chip (of proper finned heatsink) would be out of line for these. I'll also not confuse the resistors and have to desolder (and then work with 3mm leads!). The best part...I'm listening to my own stuff. Stuff that I built. Of course, knowing full well that it would not have been possible without the help of Meredith and that guy she's married to. I would also like to thank the diyaudio community, this stuff is very cool. |
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15th April 2004, 09:55 PM
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#2 |
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diyAudio Member
Join Date: Feb 2004
Location: Racine, Wisconsin
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and...
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15th April 2004, 09:56 PM
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#3 |
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diyAudio Member
Join Date: Feb 2004
Location: Racine, Wisconsin
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15th April 2004, 09:59 PM
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#4 |
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diyAudio Member
Join Date: Feb 2004
Location: Racine, Wisconsin
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15th April 2004, 11:00 PM
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#5 | |
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diyAudio Member
Join Date: Sep 2002
Location: Sacramento, CA
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Got wood?
Nice! Love the wood. And the diamond plate's a nice touch.
Quote:
Good job! se |
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16th April 2004, 05:59 PM
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#9 |
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diyAudio Moderator Emeritus
Join Date: Jan 2002
Location: near Atlanta, GA
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I put the pictures in my gallery of finished gainclone projects using the pcbs that I made:
http://www.briangt.com/gallery/nigc -- Brian |
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