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These Amps Go To Eleven!


These Amps Go To Eleven!

Info on building, modifying and repairing amplifiers. Show us your creations and share what's inside.

Members: 61
Latest Activity: Dec 9, 2014


Show us your rig, share your tips and ask any questions.

Discussion Forum

New amp hack

Started by Mike Crane. Last reply by Mike Crane Sep 7, 2014. 1 Reply

I've had an old Global Solid State amp for over 20 years and decided to hack it up and put it in a cigar box. A few weeks ago I bought 2 "Edge Lite" boxes specifically for building amps. I finally…Continue


Started by Mike Crane Aug 12, 2014. 0 Replies

I was wondering if this would make a good preamp?Does anybody have an opion?For less than $5 I may just try it. If you would like more info go to ebay…Continue

Old car radios ??

Started by Dave Henry. Last reply by Chuck Cobillas May 22, 2014. 1 Reply

Hi folksThis is my first post.I've been lapping up the wonderful knowledge base on my new favourite site!!Q; would old car radios make good CBG Amp heads?I've been looking all the great transistor…Continue

Tags: radios, car, Old

Fender speakers

Started by Rick Feb 3, 2014. 0 Replies

I found these speakers on Amazon. 8 inch, 40 Watt, now I just need find the right amp build to power them.…Continue

Comment Wall

Comment by Ted Crocker on January 19, 2010 at 12:41am
Cigar box amp made with the guts from a Fender Mini Tone Master

Comment by Roosterman on January 22, 2010 at 4:43am
Having loads of amp issues lately so this will be a great place to learn yep :o)
Heres my Hellfire Amp - Marshall 30W combo guts in a 40s/50s electric heater casing.

Comment by Hogs Grunt on January 22, 2010 at 6:55am
That amp looks really good with the lights Ben.
Nice one.
Comment by Eric Wallace a.k.a. Godzilla on February 10, 2010 at 2:55am
Where can I get some simple schematics for building a simple amp and a parts list. I would love to utilize an old radio I seen at a thrift shop for my first amp build, hook me up. Thanks...
Comment by Ted Crocker on February 10, 2010 at 9:44am
If you want to gut the insides of the radio and start from scratch, the Minty Amp is an inexpensive basic amp circuit that works pretty good.

I posted simple wiring diagrams in the discussion Wiring Diagrams and Schematics in the group Ted''s Mad Scientist Lab.
Comment by rich gallagher on February 17, 2010 at 1:17pm
i just built a ruby amp and it works fine with my strat, but when i plug in a cbg w/piezo pickups it emits an obnoxious sound like an overdriven hum - help!
Comment by Andrew C Deighton on February 22, 2010 at 6:24pm
This is a Small pic of my 1st Cigar Box Amp..other pics are on my profile..

Comment by Richard Parsons on March 29, 2010 at 10:40am
I have everything I need to build a CB amp and have this question; what is the easiest way to cut the hole for the speaker??
Comment by Ted Crocker on March 29, 2010 at 11:05am
I cut a starter hole with a drill then cut the hole with a hand jigsaw then hand sand. On this one I backed it with tweed fabric.

Comment by Jon Pruett on March 29, 2010 at 11:10am
Another technique I've seen is to drill a bunch of smaller holes in a pattern - basically whatever size drill bit you have. It can be easier than trying to get a big hole nicely rounded and does a nice job of protecting your speaker too.

So far I've only built one CBA and I happened to have a 4" hole saw left over from installing ceiling lights that did the trick. If you do use a big hole saw, make sure to tightly clamp a piece of scrap wood onto of the cigar box to stop the saw from tearing out a really rough edge on the back.


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