Post pics of your builds....
Nov 15, 2006 at 6:23 AM Post #1,636 of 9,811
Quote:

Originally Posted by mb3k
kklee, great work. It's very clean and the holes are precise!
Where did you get those tube hole rings?



Thanks.

A drill press comes in handy when it comes to precision (not to mention re-measuring many times before drilling). As for the rings, those are just some plain old rubber grommets I ordered from Digikey.
 
Nov 15, 2006 at 6:25 AM Post #1,637 of 9,811
Quote:

Originally Posted by Polaris111688
It even has a nifty VU meter (It's upside down in the pics). VU meter schematic is from Elliot Sound Products. The board design is my own.


I've been looking for something like this. I'll have to check it out.
 
Nov 15, 2006 at 6:35 AM Post #1,638 of 9,811
Quote:

Originally Posted by scottder
Nice! Can I be your friend
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Sure you can, but the friendship doesn't come cheap
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I actually built two of these, one for myself using Elna cap's and one for my friend, who wanted Blackgate cap's everywhere on his build. I haven't tallied the final cost on his build, but it's probably going to be in the neighbourhood of about $350 in parts. There's about 8 hours of labour on the case itself, not to mention PCB assembly, testing and tweaking.
 
Nov 17, 2006 at 2:30 PM Post #1,639 of 9,811
guys, you are all very amazing!! i can't beleive you all made these! man, you guys are so good!
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good job friends!
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Nov 17, 2006 at 8:09 PM Post #1,642 of 9,811
Continuation of my PPAv2 build at USAFA. I finally got it all cased up and the interference problem fixed. It sounds wonderful.

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The amp in front of my issued tablet laptop. Look at that VU meter.

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I integrated a HPDAC dsavitsk built for me into the amp to function as a preamp. Basically, I can power a speaker amp and headphones simultaneously under different volume controls. The DAC's outputs are hooked directly to the PPAv2's inputs in the same case. The HPDAC is still in the hammond case it came in, but I routed wires out the rear to go to the PPAv2.

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One more shot of the amp from perspective.

And here's something I caught today, just for fun:
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4 F-16Cs flew over the Terrazzo here at the Academy today. I was in the grass square when I took the photo.
 
Nov 17, 2006 at 9:16 PM Post #1,643 of 9,811
I just re-cabled the amp's all signalpaths with PTFE-insulated silver-plaited stranded copper wire. These new cables are white.

The wires from Neutrik's RCA-jacks to amp's inputs are coax cables with internal insulation by PTFE and sleeve of FEP. Shield and signal wire are both silver-plaited copper.

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Now it's far more better sounding. Really makes even my cheap 20e Sonys sing. That coax is now officially my new favourite cable
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Nov 18, 2006 at 2:09 AM Post #1,645 of 9,811
Quote:

Originally Posted by Toody /img/forum/go_quote.gif
Here is my first atempt to make a cMoy amplifier.

I didn't find any mint tin i the size i wanted so it had to be small.

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dude, how do you do this? i also want to do the same.. i really dunno how to make an amp, like the parts needed, wiring, circuitry, etc.. do you have like a dummies guide or something?
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Nov 18, 2006 at 11:51 PM Post #1,647 of 9,811
Wow, you guys have totally blown me away with some of these builds. I see novel circuits, I see excellent quality. Tons and tons of good stuff.

As the newbie here at head-fi I'll just throw out some photos of my current rig. You can't really see much, so I'll describe it. It's a balanced Aleph amplifier, taking after the Nelson Pass designs, but with a JFET input and super-regulated power rails (taking after Jung). The last photo is the attenuator.

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Nov 19, 2006 at 4:24 AM Post #1,649 of 9,811
That's a truly outstanding job...
 

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