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These Amps Go To Eleven!

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These Amps Go To Eleven!

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

Members: 67
Latest Activity: Jun 11

Amplifiers

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

Discussion Forum

Mini Amp help

Started by Mark Duncan. Last reply by Mark Duncan Feb 10, 2016. 15 Replies

I'm planning to make some mini amps out of old tins and I've been looking at kits based around the LM386 chip. I don't want to buy them from the US or China (I'm in the UK) as I'll have to wait a…Continue

Speaker Wiring Options-- a Question

Started by Wayfinder. Last reply by Wayfinder Sep 21, 2015. 2 Replies

In studying speaker and amp electronics, I've come across a puzzler and currently I don't have enough electrical knowledge to figure out the answer.  So I thought I'd call on some of you wizards out…Continue

Build Your Own Cordless Amp / Preamp-- Easily!

Started by Wayfinder. Last reply by Ted Crocker Sep 2, 2015. 1 Reply

Well, relatively easily.  It's like making a CBG, but simpler.Photo is at the end of this article.  Ted asked me to re-post this here for the Amp group.  Nicetameecha!  :D    CBG players often wish…Continue

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

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Comment by David Sutton on April 8, 2011 at 7:43am
Thanks, Ted. This particular amp has 10 watt output.
Comment by David Sutton on April 8, 2011 at 7:20am
Perfect. I'll give that a try.
Comment by Ted Crocker on April 8, 2011 at 1:01am

David, you have to use your imagination a little but here's what you do.  Imagine that the piezo below is your board's speaker + and -.  And imagine that the jack is your speaker.  Without knowing any specs, I'd say go with a 250.

 

 

Comment by David Sutton on April 8, 2011 at 12:43am

Can anyone tell me how to add a volume control pot to this kit? There're two terminals for a speaker: Hot and ground. Can I just drop it in line there? What sort of pot? 250K?

THANKS.

Comment by David on February 28, 2011 at 6:34pm
My Amps
Comment by colin mcgrath on November 3, 2010 at 4:07pm
so sometime in the future I want to build an amp that doubles as a theremin, with guts from unspecified pedals built in for sound distortion. Would I be able to use 2 speakers (like, say the sony xplod car size) and would I have to worry about the differences between wiring for mono versus stereo sound? I do not know much about wiring and creating electronics, just looking for some feedback on this idea.
Comment by Roosterman on April 25, 2010 at 5:10am
New amp project in the works - got the case sorted, just after a donor amp now :o)
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.
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 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??
 

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