RBLA Posted June 3, 2003 Share Posted June 3, 2003 I just bought a new little Pignose amp which sounds good with batteries, but when I plug in the ac adapter it make a humming noise. Tried plugging it in a few outlets around the apartment, but it happens everywhere. Is there something wrong with it? Thanks. Link to comment Share on other sites More sharing options...
Chris Hebb Posted June 3, 2003 Share Posted June 3, 2003 Mine has always done the same thing. C. B. Hebb Link to comment Share on other sites More sharing options...
Caevan O'Shite Posted June 4, 2003 Share Posted June 4, 2003 Is the hum significantly louder than the hum you usually get in most guitar amps? When you run it on batteries, DC power, you lose the 60-cycle hum endemic to all sound equipment that you run on AC power. It's always there in AC powered circuits, although the overall quality of a design and its components will make a difference; but it will still be there. Perhaps Myles would know of a way to lessen this; the only way to completely eliminate it, though, is to run on batteries. -k Ask yourself- What Would Ren and Stimpy Do? ~ Caevan James-Michael Miller-O'Shite ~ _ ___ _ Leprechaun, Esquire _ ___ _ Link to comment Share on other sites More sharing options...
Prague Posted June 4, 2003 Share Posted June 4, 2003 If it's a wall wart, find one with the same voltage and plug polarity, but with a lot more current capabilty. Some warts run within an inch of their life and can be noisy. Link to comment Share on other sites More sharing options...
Caevan O'Shite Posted June 4, 2003 Share Posted June 4, 2003 paostby- cool tip! You know, that could be very useful, and very easily overlooked! A real "Gee, I wish I'd thought of that!" -k Ask yourself- What Would Ren and Stimpy Do? ~ Caevan James-Michael Miller-O'Shite ~ _ ___ _ Leprechaun, Esquire _ ___ _ Link to comment Share on other sites More sharing options...
RBLA Posted June 4, 2003 Author Share Posted June 4, 2003 Originally posted by CaevanO'Shite: Is the hum significantly louder than the hum you usually get in most guitar amps? When you run it on batteries, DC power, you lose the 60-cycle hum endemic to all sound equipment that you run on AC power. It's always there in AC powered circuits, although the overall quality of a design and its components will make a difference; but it will still be there. Perhaps Myles would know of a way to lessen this; the only way to completely eliminate it, though, is to run on batteries. -kThe hum is way louder than any amp I've played through. Very annoying. Link to comment Share on other sites More sharing options...
RBLA Posted June 5, 2003 Author Share Posted June 5, 2003 Originally posted by paostby: If it's a wall wart, find one with the same voltage and plug polarity, but with a lot more current capabilty. Some warts run within an inch of their life and can be noisy.Thanks for the tip. I'll try that out. Link to comment Share on other sites More sharing options...
Caevan O'Shite Posted June 5, 2003 Share Posted June 5, 2003 Hey, RBLA, let me/us know how you make out. -k Ask yourself- What Would Ren and Stimpy Do? ~ Caevan James-Michael Miller-O'Shite ~ _ ___ _ Leprechaun, Esquire _ ___ _ Link to comment Share on other sites More sharing options...
Prague Posted June 5, 2003 Share Posted June 5, 2003 The regular Pignose runs on 9V. Nothing says the current needed to run these, but the wall wart should. Funny enough, the Pignose wall wart is called a Hum-free! The AA batteries are all in series so the current capability is the same as one AA battery. A typical AA battery has a current rating of 1600 mA-h. This means that it can supply 1600 mA (or 1.6 A) for one hour. If the batteries last 1 hour (while playing) then a Pignose draws 1.6A. If the batteries last 2 hours, then a Pignose draws 800mA, and so on. Link to comment Share on other sites More sharing options...
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