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Build an Amplifier

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Thread replies: 12
Thread images: 2

File: ASH9R83O;AROSA.jpg (261KB, 1100x1100px) Image search: [Google]
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Hey /dyi,

Anybody know how to make a relatively simple amplifier?

I don't need anything fancy, but as long as it has a preamp and potentiometer I'm relatively happy. Trying to make little portable set of speakers.

Post those schematics up!
>>
>relatively simple amplifier
I got a 2N3904 right here bro
>>
>>930341
How did you build it?
>>
>>930349
A 2N3904 is a single transistor, and isn't useful as an amplifier by itself. Most amps use a lot of transistors. It's not a simple subject. This is a website I have been gleaning information from about amplifiers for over a year now.

http://sound.westhost.com/articles.htm
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>>930352
>http://sound.westhost.com/articles.htm
Thanks! Will check it out.
>>
>>930339
Musicpcb.com has a board called the tiny big amp I believe. It runs of a laptop power supply, but I suppose you could make a battery pack for it if you want portable. Hell, find an old scrappy laptop with a broken screen or something and steal the battery, charger, and charge controller for it.
>>
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Here's a nice little amp that uses a FET buffer and a LM386.
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>>930543
Forgot to link the website: http://www.runoffgroove.com/ruby.html
>>
Would this ever be worth it price wise/soundwise?
>>
>>930564
for super high end audio equipment, building it yourself is usually a great deal cheaper than blowing $1k on an amp. The most expensive individual components are power transistors and heatsinks. Resistors are less than pennies a piece in bulk.
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>>930339
OP just go get a practice amp or one that you plug headphones into they're not expensive you'll spend less money that way than fooling around building a piece of crap amp from scratch.
>inb4 buyfag
>>
>>930564
Possibly. Time wise? Probably not. If you were experienced and had a working shop tailored to it then maybe, but a first timer doing this out of a bedroom would devote a tone of time to it, especially with a steep learning curve.
Thread posts: 12
Thread images: 2


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