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Messages - joecool85

Preamps and Effects / Re: Pictures
March 28, 2006, 02:16:55 PM
You are right.  I didn't listen to the second one because I thought it was the same clip, same address.  But its not, the second one has a capital P and is a different clip.
I'd have to double check, but from what I remember, the first half of the TL072 is a buffer.

Thanks for the link chris.
Amplifier Discussion / Re: What have you guys built?
March 28, 2006, 07:46:58 AM
Yeah, its true.  Its all about the preamp.  I mean, you have to us a nice IC, or a good discrete circuit for power, but most of them are all the same, the only difference being how many watts you get.  The power supply is extremely important also, but thats mostly a matter of making sure its large enough more than anything.  Preamp gives you all of your tone and thats whats important.  It doesn't matter if your amp is loud enough to knock over a house if it sounds like garbage.
Preamps and Effects / Re: Pictures
March 28, 2006, 07:44:47 AM
I think those both go to the same clip Ricky.  Sounds good though.
Preamps and Effects / Re: Pictures
March 27, 2006, 08:00:49 PM
I've never played one personally, but someone on diystompboxes posted some sound clips.
Where can I get that?  Is it for PC or Mac?
Anyone have a schematic for this thing?  (The deucy)
Preamps and Effects / Re: Pictures
March 27, 2006, 01:06:21 PM
I like the phase 45, I'd like to build one but I'm not too keen on matching the JFETs or whatever it was you had to match to do it.
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


Who used that?
Amplifier Discussion / Re: What have you guys built?
March 26, 2006, 09:46:51 PM
Actually, it kinda sucked.  Not horribly loud and practically no clean headroom.  Sort of a bummer because I put a lot of time into that amp and it really didn't work so well for bass.  It sounds ok with guitar though, so long as you don't mind some low quality distortion lol.  Overall I wouldn't recommend it though.
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.
Schematics and Layouts / 5th Gear Overdrive
March 25, 2006, 07:07:55 AM
*** Old version seen below, new version here: ***

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

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!
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.