ampage archive

Vintage threads from the first ten years

JTM-45 w/reverb schematic?

 

9/3/2003 4:07 AM
Craig	JTM-45 w/reverb schematic? I've seen the recommendation on hoffmans site but would rather see one with it worked in to a jtm45 or bassman circuit. Anyone have one? Thanks.

 

9/5/2003 3:52 AM
Craig	I give up......... I'm getting a complex here.......I guess I'll just have to pick & choose at cathode resistors & caps in the preamp section from about 3 different schematics! Does anyone have any experience with the .68/250v caps the Hoffman used in his old plexi designs?

 
 

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9/5/2003 5:13 AM
PHATamps	Hey Craig,     I think you figured it out, just sub the JTM45/Bassman values into Hoffman's Plexi w/reverb layout. I've used the .68/250V caps he sells in quite a few amps, they work great.     Paul

 

9/11/2003 8:39 AM

Craig C.

It's alive! The build went relatively slow due to a generic chassis & a generic two row turret board, but it was the easiest power up & tweek I've ever done, dead quiet, rock steady and sounds amazing. I'll I did was change the slope restor and a few coupling caps to get a tad more bass, which I figured I'd want to do since I went with the 32uf's vic 50uf's in the first can. Amp porn available if anyone wants it. I'd recommend this chassis(strange one with power tubes in the back & preamps in the front) to anyone wanting to add a reverb trany & additional preamps.

 

9/11/2003 8:41 PM
Matt H	what chassis are you talking about? "this chassis"?? sorry, i think i'm out of the loop (and loopy from all the cold meds)

 

9/12/2003 12:29 AM
Matt H	craig, your email clogged my account and prevented me from getting any messages since you sent it, ij ust got off the phone with support, i'd appreciate it if you didn't send whatever that was again, a 30 meg virus infected attachment was a tad unnecessary.

 

9/12/2003 7:08 PM
Craig C.	? My machine gets completely virus scanned daily and all it was was 4 pics of the amp, which have been sent to 9 people now with no problems or virus' attached........I'd look at your ISP email provider!

 

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