TheGreatWhiteDope Posted May 15, 2007 Report Share Posted May 15, 2007 (edited) I was looking around at schematics websites had to offer, and I had found a pre and power schematic for a Marshall JCM800 2203 100 watt. I like the sound of these amps and since it is just a basic amp I figure it won't be too challenging to build. One thing I want on it is a 10 band EQ before the pre amp, I also found a schematic for this. I figure I will start by trying to make the equalizer since it is a lot less complicated, and if I get that working, go from there. Here are the schematics I found: Pre Amp: http://www.drtube.com/schematics/marshall/2203prem.gif Power Amp: http://www.drtube.com/schematics/marshall/2203pwrm.gif EQ: http://www.uashem.com/images/audio/unfasdastitled.gif From the amp schematics, would I be able to build the amp itself? Also, would these tubes work for the amp?: http://store.tubedepot.com/jj-ecc83.html (3 in the Pre Amp, 1 in the Power Amp) http://store.tubedepot.com/jj-e34l.html (4 in the Power Amp; 2 pair) I know the basics of electronics and some parts of the schematic confuse me (I've looked them up in the tutorials in the stickies, I could not find what I was looking for though.), but as for now I am just going to attempt to make the EQ. So, for the EQ, two parts confuse me: The boxes with 1 and 2 inside them, CON2 written under them, and J1/J2 above them. Are they some sort of input/output? The triangles containing a + and - and two what looks like a "half a capacitor" with VCC on top and VDD on the bottom. EDIT - One other thing, where would I get a blank circuit board? I can't seem to find any.. Thanks in advance for any help you contribute. Edited May 15, 2007 by TheGreatWhiteDope Quote Link to comment Share on other sites More sharing options...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.