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Old 18th July 2005, 11:29 AM   #1
Khron is offline Khron  Romania
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Default Possible blasphemy for guitarists... :)

I know this may sound blasphemic, but...

Is there a somewhat easy-to-build solid-state guitar amp schematic out there?

Tubes are too hard to find and/or too expensive for low-budget instrumentists like some friends of mine..
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Old 18th July 2005, 01:25 PM   #2
jmateus is offline jmateus  United States
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Default Possible blasphemy for guitarists

I would like to refer you to Randy Slone´s book "High Power Audio
Amplifier Construction Manual" for the schematic you are looking for.
Besides being very informative (if you want to learn something about
audio amplifiers) the book has schematics of several amplifiers, two
or three of them are for musical instruments.
The book also has the boards layouts for somebody who wants to
build those amplifiers.
The publisher is McGraw-Hill and can be seen at www.books.mcgraw-hill.com
, but you can find it also at Amazon.com at a discounted price.
I hope this helps.
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Old 18th July 2005, 04:23 PM   #3
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Have a look here:

http://sound.westhost.com/projects-5.htm

Another option is to fine yourself a good schematic for a guitar preamp with tone controls and put a chip amplifier behind it.
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Old 18th July 2005, 05:00 PM   #4
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A friend of mine just whipped up a little guitar amp with a TDA7350? Chip-amp from an old car radio..Added an op-amp or two for a pre,and slapped the whole thing inside a PC PSU,with the PSU still inside!

Little 20W jam-box! (Just add speaker(s)) Sounds fairly good so far,I think he's gonna tweak it a bit more..Not bad for a $0 junkbox project.
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Old 19th July 2005, 12:59 AM   #5
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Default check out this site...

http://www.runoffgroove.com/articles.html

I made a 'peppermill' and added it to a small ss chip amp,
sounds great.

Pete McK
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Old 19th July 2005, 06:27 AM   #6
Enzo is offline Enzo  United States
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The little five-legged TDA2030 or TDA2040 are not expensive, very easy to wire up for a small power amp. For a simple preamp, why not look at some commercial amps and copy the circuit. Nothing wrong with copying the circuit for your own use, just don't sell the amp.

For example, send an email to parts@peavey.com and request the schematic for the AUdition 30 guitar amplifier. One TDA2040 power amp chip and one 4558 dual op amp, plus all the passive parts. Or the Peavey Rage might be a fun little amp to build, again, one power amp chip and one op amp. If you ask for the RAge, tell them you want the old original Rage. (Not the newer "transtube" version)

SOlid state guitar amps can get as complicated as you want them too, but these couple examples are pretty basic. Other brands make very similar amps.
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Old 21st July 2005, 06:20 AM   #7
Brion55 is offline Brion55  United States
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I used a tube preamp/distortion with a solid-state power amp for years and always got compliments on the good sound. The key is to never drive the power amp into clipping. That's when they sound bad.

I've heard some newer all solid-state amps that sound pretty darn good too!
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Old 21st July 2005, 11:28 AM   #8
Khron is offline Khron  Romania
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Thanx for the input ppl, much appreciated
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