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Hoffman Amps Forum image Author Topic: Premier Reverb 90 Build Complete    (Read 3767 times)

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Offline Geezer

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Premier Reverb 90 Build Complete  
« on: June 18, 2005, 05:29:31 am »

  Hoffman Amplifiers
    > Tube Amp Building - Tweaks - Repairs
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Dmichel1984
Junior tube assistant
Posts: 27
(3/19/04 5:01 am)
  Premier Reverb 90 Build Complete
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 The rest of my parts came in from Doug yesterday, just got done wiring it up.

I'll update this tomorrow with some good info(does it work? how's it sound? etc.)

Can't try it out right now, everyone is asleep.......oh well

  
 
Dmichel1984
Junior tube assistant
Posts: 29
(3/19/04 2:55 pm)
  HUMMM
--------------------------------------------------------------------------------
 Hooked it up and tried it... it's humming pretty loudly, and the guitar is coming through, although it is very weak with no reverb. I'm thinking it might be a ground problem with this powder-coated Hammond chassis. I'll try to work on all the grounds, and triple check everything else(again), I'll let you know what I find out, also I'll post all the tube voltages later...


Thanks,
Danny
 
Dmichel1984
Junior tube assistant
Posts: 30
(3/19/04 6:54 pm)
  Working...
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 Ha! It works!! The problem was the amp I had hooked it up to, an old Alamo without PT(runs on 120V AC line) and also 2 prong w/o a ground... flipped that plug over, and everything works fine, except a little hum. I moved a couple wires & caps, and that made it pretty quiet. I'd like to get rid of the little hum I'm still experiencing(yeah right...), shielded wire in all the places needed will probably help alot(...i was in a rush to finish it!). Other than a little hum, it's sounding great. I added a tone control by copying the Fender reverb schematic, that adds some more sounds I can't get on my real Premier. I just noticed the dishwasher is making some of this hum....
  

 
 
 
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