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Topics - joecool85

#181
Amplifier Discussion / My little gems
March 31, 2006, 10:44:20 AM



My first little gem.  It runs on one 9v and is in a cheap treasure chest that I bought for $2 at a dollar store.  The 1/8" jack isn't a headphone jack, but an external speaker jack for my pot cab.






Here is my little gem clipper.  I can hook it onto my pocket and walk around playing guitar in my apartment.  No volume control, I just use the guitar's volume...and leave it all the way up anyway.  The switch on it goes from clean to OD.  It runs on 3xAA.

The schematic is available at runoffgroove.com and in the schematics section of the forum.
#182
Amplifier Discussion / My lm3886 power amp
March 31, 2006, 10:23:49 AM












The schematic for this is in the schematics section of the forum.
#183
Schematics and Layouts / lm3886 amp
March 31, 2006, 10:18:55 AM


**Taken from the lm3886 manual @ chipamp.com**
#185
Preamps and Effects / Pictures
March 27, 2006, 11:34:53 AM
Lets seem some stomp boxes

Here are some I've built:

5th Gear Overdrive



Volume


Fuzzface
#186
Schematics and Layouts / Dean Markley
March 25, 2006, 07:09:22 AM
All of the Dean Markley Legacy amp schematics are up at DM Docs

This includes the K20, K-20X and a fiew other favorites of mine.
#187
Schematics and Layouts / 5th Gear Overdrive
March 25, 2006, 07:07:55 AM
*** Old version seen below, new version here: https://www.ssguitar.com/index.php?topic=4795 ***

This is the first design I've finished.  It gives a good solid overdrive/distortion depending on how much you turn up the gain.

#188
Amplifier Discussion / What have you guys built?
March 25, 2006, 07:05:15 AM
I finished my TDA2003 amp yesterday (pics coming soon)

So here is my list

2x little gem (lm386 amp) 1/2w
1x TDA2003 5w
1x lm1875 2x20w
1x lm3886 1x50w

Eventually I may build a bridged parallel lm4780 which would yield 200w!!  But for right now 50w is plenty, that thing is loud!
#189
Preamps and Effects / Anyone good at making PCBs?
March 25, 2006, 07:03:05 AM
I have a preamp I want to do.  It is the preamp off a Dean Markley K-20X.

Here is the schematic:


I actually just need someone to make the PCB design, I was going to have 5-10 of them printed by a place online.