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Chipp's custom amp project

post #1 of 30
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EDIT: This will be my thought organization area and build log. Feel free to chime in with whatever you want to add.

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If anybody has info or links on DIY audio amplifiers/kits I would greatly appreciate your posting it. In particular, I'm looking for a kit-seller who I believe was based in Europe. I've found several other sites with interesting kits, but in particular I remember this site as having exactly what I was interested in. I am 99% sure I was originally recommended them on OCN, so if you were the OP I would love it if you could chime in again

Thanks guys.
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post #2 of 30
You talking about mosfet or tube? I could research it. I made a small mosfet amp once. it wasn't very strong only one transistor. But it was a learning experience. I learned how by following a radioshack guide lol.
    
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post #3 of 30
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Solid state is how it's looking for now. I've got a tube monoblock kit I'd love to go ahead and try out, but money is one of the issues I'm going to go DIY. The speakers I'll be driving have 106dB sensitivity, so I don't need anything beastly to drive them. I'm thinking in the 30-watt range.
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post #4 of 30
have about using automotive audio componenets and powering up with a computer powere supply, ive heard of the being done many times.
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post #5 of 30
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Quote:
Originally Posted by carheadman View Post
have about using automotive audio componenets and powering up with a computer powere supply, ive heard of the being done many times.
I thought about that a while ago, but it wouldn't be enough fun.

Due to my mediocre soldering skills, I've decided a Gainclone like the ones from chipamp.com is out of the question.

Class-T = not for me.

That leaves me with traditional transistor-based amps (just like everything else these days that is not Class-T) or vacuum tubes. Tube is certainly a larger learning curve, but the kits and raw schematics are readily available from tons of sources. As of right now, the kits from s5electronics.com definatly offer the best price ($99 plus shipping for a monoblock), though I'm not sure on their sound quality. I'm rather cash-strapped right now, so the soonest I could pick one of those up would be in early August, after my birthday.

Other that that, I'm left with the transistor-based QKits designs I originally posted. The soldering equipment I'd need for a Gainclone would cost almost as much as the amp itself, and I can't justify that.
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post #6 of 30
Chip, if you want a gainclone amp but don't feel comfortable soldering it you could send it to someone or pay your local electonics repair shop to do the soldering for you. Then you'd only have the enclosure work

Or, I did see a gainclone amp on headfi yesterday for under $100. It's a power amp, so you'd need a pre-amp for volume adjustment, but it wouldn't be a bad deal. A LDII amp would be a good option as it would give you a nice tube pre-out and a solid headphone amp.
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post #7 of 30
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I'm comfortable with a soldering iron, I regularly do repairs on audio equipment and other small work. Its just that the ICs for the Gainclone are, I believe, beyond my abilities. I could probably figure it out and teach myself as I went along, but I don't think it'd be the best idea to teach myself small-scale soldering, amplifier design, and whatever else I stumble upon all in the same project.

As I read up more on the chipamps though, they are not quite as small as I expected. The first real photo that had some size comparison was with this guide, which I think looks very interesting. If I do coax myself into a LM3886-based amp, I might go with a design simmilar to this one:
http://www.shine7.com/audio/pa100_2.htm
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post #8 of 30
That's a simple design... it's pretty much maxed by the looks of it though. I don't think that amp could be built for your budget! lol, that guy has your budget in caps alone!

oh, and those look like 1/8w resisters in the picture to use as reference. Nothing is surface mount, if you can do minor surface mount stuff this will be a walk in the park
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post #9 of 30
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Quote:
Originally Posted by soloz2 View Post
That's a simple design... it's pretty much maxed by the looks of it though. I don't think that amp could be built for your budget! lol, that guy has your budget in caps alone!

oh, and those look like 1/8w resisters in the picture to use as reference. Nothing is surface mount, if you can do minor surface mount stuff this will be a walk in the park
Yeah, no way does that fit into my budget. Blackgates on this project? I thinketh not. I would not be setting it up in parallel, either. I don't need that much power. The speakers have 106dB sensitivity, which is downright silly.

I like the layout in the chassis though, I might try to emulate that. Simple, clean, and effective. He didn't try to cram everything into one corner and leave the rest of the space empty like to many other people do. Even though this will be on a breadboard.
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post #10 of 30
Pretty simple design there

Solid State is the way to go - the transistors can get a lil Icy putting in - depending on where they go, but meh, thats the least.

Giving your elevated breadboard () to a "technician" to solder - is just... taking the fun out of the whole thing man.

I built a 1w easy once - your stuff seems more advanced though.

I'm Subscribing! - really looking foward to seeing your progress.

Good luck man
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