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Chip Amps Amplifiers based on integrated circuits

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Old 11th June 2003, 04:37 AM   #11
elizard is offline elizard  Canada
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more pictures!!!

the back of the amp, showing the connection for the umbilical cord, the power cord, as well as a pair of XLR connections, not in use however
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Old 11th June 2003, 04:39 AM   #12
elizard is offline elizard  Canada
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A picture of the switch, which in the original PA amp was bypassed by a small capacitor. So I left it that way, and I can't hear any drawbacks to it ....
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Old 11th June 2003, 04:40 AM   #13
elizard is offline elizard  Canada
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close up of the bridge itself

a few more to go .. sorry, i'm picture happy now since i borrowed a digital camera
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Old 11th June 2003, 04:43 AM   #14
elizard is offline elizard  Canada
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one last pic (i can't think of anything more to take pics of!)

this is the insides
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Old 11th June 2003, 08:16 AM   #15
Nuuk is offline Nuuk  United Kingdom
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Nice pictures elizard! Is that really just a web cam that you used? The close ups are very sharp.

One interesting point, your Panasonic FC caps are a different colour to the ones we get in the UK (Europe?). Ours come with a black jacket as seen in this picture

Click the image to open in full size.

I would make just one sugggestion looking at your pictures. Try supporting the lower ends of the FC caps rather than leaving them in mid air so to speak. I think that it could help improve the sound slightly.
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Old 11th June 2003, 02:01 PM   #16
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Nice, very nice.
There are no two equal Gainclones.
Every GC is an original piece.
elizard, you can cut two pieces of wood, apply some varnish and put on the front of the amp modules.
It would be a nice front pannel, with one of your blue leds.
Just a suggestion.

A question I whant to make you is if you don't have ground loops.
Any noise?
Two channels in independent boxes and only one toroid... usually means noise.
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Old 11th June 2003, 03:06 PM   #17
elizard is offline elizard  Canada
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there is a slight buzz, which you cannot hear when you turn the music on ..
one thing i will try doing is connecting the star earths and seeing if that makes a change, but the buzz/hum is so slight (my old receiver put out like 10 times more hum) that i am not bothered. You have to actually be right up to the speaker to hear it

oh yeah, and its a digital camera, not a webcam
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Old 11th June 2003, 03:16 PM   #18
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Talking The sound of silence

With no music playing, with my ear near the speaker, I take the volume control all the way to the maximum position and...
Nothing!
Completely silent.
But you have to make it as I mentioned above.
Now... with two boxes and one transformer, I can't see how.
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Old 11th June 2003, 03:19 PM   #19
elizard is offline elizard  Canada
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actually i'll go try the star earths now

also the buzzing is the same at any position of the volume control
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Old 11th June 2003, 03:23 PM   #20
elizard is offline elizard  Canada
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ok, well connecting the star earths didn't help

ahh well, i'm not bothered by the sound, so its all good
rather its inaudible from my listening position on my computer which is my computer, and is about a little over a meter from the speakers
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