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Pignose Hum


RBLA

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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.
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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 _ ___ _

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paostby- cool tip! You know, that could be very useful, and very easily overlooked! A real "Gee, I wish I'd thought of that!" :freak::eek::rolleyes::D:thu: -k

Ask yourself- What Would Ren and Stimpy Do?

 

~ Caevan James-Michael Miller-O'Shite ~

_ ___ _ Leprechaun, Esquire _ ___ _

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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. -k

The hum is way louder than any amp I've played through. Very annoying.
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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.
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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.

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