The Hundred-Buck Amp Challenge - Page 5 - diyAudio
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Old 14th June 2011, 01:30 AM   #41
Trout is offline Trout  United States
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One thing certain, Just Radio's out of Canada has great pricing on Electrolytic's for the PS as well as film caps.
Bonus, he is VERY reasonable on shipping and does world wide sales as well
Price List and Order Form for CAPACITORS for Antique Tube Radios

Antique Radio Schematics and Capacitors for Tube Radios
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Old 14th June 2011, 02:25 AM   #42
Trout is offline Trout  United States
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I did a little digging around on my old PC and found some clips from the 6AQ5SE amp I built in 2005.

I have always been a fan of those babies.
This one had used a single 12AX7, a 6AQ5 & 6CA4/EZ81 rectifier. It had a cheap OT from Triode Electronics.
TF103-48ul
FENDER CHAMP STYLE 5W OUTPUT TRANSFORMER TF103-48 Single Ended Ultra-Linear 4 / 8 Ohm MADE IN USA

Close Mic recorded with Shure SM57, a hint of reverb added post with cakewalk software.
12" speaker & Fender Strat
Basically a modded AA764 Champ circuit.

A Little Noodling

Cranked for Feedback

I always found that particular OT a bit weak especially on the bottom end but it was cheap & worked.

Last edited by Trout; 14th June 2011 at 02:28 AM.
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Old 14th June 2011, 02:28 AM   #43
SY is offline SY  United States
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Still isn't clear to me- does the $100 limit count the speakers as well? Or just the head?
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Old 14th June 2011, 02:44 AM   #44
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^post#1 just the head.....
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Old 14th June 2011, 02:50 AM   #45
SY is offline SY  United States
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Excellent- I have an idea...
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Old 14th June 2011, 02:54 AM   #46
Trout is offline Trout  United States
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Quote:
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Excellent- I have an idea...
I thought you did not like building guitar amps because they always ended up sounding for lack of a better word " HiFi "
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Old 14th June 2011, 02:58 AM   #47
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Quote:
Originally Posted by SY View Post
Excellent- I have an idea...
mind sharing SY?
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Old 14th June 2011, 03:00 AM   #48
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I got the idea of using the 12W6 from wavebourn, they sound fantastic in guitar amps and at U$1 each who can complain?

i have a suspicion they will sound even better in hifi amps....
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Old 14th June 2011, 04:09 AM   #49
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Not trying to pee on the party tray or anything, but here's my 2-bits:

What a weird contest. The elusive goal with practice amps is always in creating one that sounds decent while still being cheap and quieter than a "normal" guitar amp. But, nobody has mentioned sound as a criteria here.

If participants are the judges, as described in post #1, then I fully expect the winner to be an exceptionally creative and impressive circuit, that has a 50% chance of sounding like a cat retching when you play a song on a guitar that's plugged into it.

If the judges were, instead, DIY guitar amp builders (i.e. real guitar players) who judge the amps based on their sound, then you've got a real guitar amp contest, IMHO. But then you can't expect them to build and audition them all and cast their ballot in just a month or 2.

And if it's not about guitar sound, then what's it about? Circuit design? Then why a guitar practice amp? What a weird contest.

Also, why 2-5 watts? There are plenty of good practice amp designs out there that push far less than 1 watt (12UA7 or 6CG7 as output). If you happen to want Eddie Van Halen's sound, even 2 watts will practically blow your windows out. I'd suggest "5 watts or less" rather than 2-5 watts.

..todd

Last edited by taj; 14th June 2011 at 04:13 AM.
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Old 14th June 2011, 05:46 AM   #50
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Quote:
Originally Posted by taj View Post
But, nobody has mentioned sound as a criteria here.
I did, actually. It will be an amp for practice and studio recording. And I have something more in mind...
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