New 36 W build, JCM 800 pre-amp
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New 36 W build, JCM 800 pre-amp
I just finished another 36W build, with the B+ and the power section built off of the 18W design and values, only double bubble. This amp features a quad of 6V6's, typical 18/36W B+ rails, dropping resistor values, & cathode bias. The preamp is a JCM800 2203. For the PT I used an Edcor 200ma 310-0-310, OT the MPS 42va. It has a lot of gain. A lot of gain. Pretty much it turned out about as well as the Baby Blues JTM did. Thanks to Phil for his suggestion to not lower the 470K's. And a few photo links:
http://i938.photobucket.com/albums/ad22 ... nside2.jpg
http://i938.photobucket.com/albums/ad22 ... opview.jpg
http://i938.photobucket.com/albums/ad22 ... board1.jpg
http://i938.photobucket.com/albums/ad22 ... nside2.jpg
http://i938.photobucket.com/albums/ad22 ... opview.jpg
http://i938.photobucket.com/albums/ad22 ... board1.jpg
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- Bronsboi
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Thanks for the compliment, but I fought the layout a bit, and will probably change a few things on the next one to clean it up a bit more. I think I like the 6V6 roar a bit better than the EL84, but this one is definely is an 80's toned amp.Bronsboi wrote:Guitar rocker, your layouts are so tidy, it makes me want to weep when I look at my amps!
How do you like the tone compared to your other 36watt builds?
Great work.
Dave Brons
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And another couple of sound clips:
http://www.youtube.com/watch?v=IslQubde ... e=youtu.be
http://www.youtube.com/watch?v=itGnnUt_ ... e=youtu.be
http://www.youtube.com/watch?v=IslQubde ... e=youtu.be
http://www.youtube.com/watch?v=itGnnUt_ ... e=youtu.be
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