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Really Quiet Power Supply
Posted:
Thu Mar 04, 2010 3:58 pmby Stringmaster
I just recently acquired a new amp that is so quiet I'm obsessing a little about noise. At the moment the only 9V adapter I have is a Roland ACR-120, and if I plug it into my Tone Press I get a hum; on battery the pedal is dead quiet. I also have a Hardware RV-7 that is dead quiet until I plug in the adapter, and then I get a hiss but no hum.
What are the options for a really quiet power supply?
If it matters, the amp uses a 54/55 Bassman circuit.
Re: Really Quiet Power Supply
Posted:
Fri Mar 05, 2010 9:29 pmby David Barber
Stringmaster wrote:I just recently acquired a new amp that is so quiet I'm obsessing a little about noise. At the moment the only 9V adapter I have is a Roland ACR-120, and if I plug it into my Tone Press I get a hum; on battery the pedal is dead quiet. I also have a Hardware RV-7 that is dead quiet until I plug in the adapter, and then I get a hiss but no hum.
What are the options for a really quiet power supply?
If it matters, the amp uses a 54/55 Bassman circuit.
Is it a lightweight switching supply, or the heavier transformer type?
Re: Really Quiet Power Supply
Posted:
Sat Mar 06, 2010 1:02 amby Stringmaster
It's the heavier transform type, Roland ACR-120 9V 500mA model D9500.
I've heard conflicting reports about the switching supplies and noise.
Re: Really Quiet Power Supply
Posted:
Sat Mar 06, 2010 1:38 amby David Barber
Stringmaster wrote:It's the heavier transform type, Roland ACR-120 9V 500mA model D9500.
I've heard conflicting reports about the switching supplies and noise.
The battery is dead quiet? are there other effects not listed? If so, does removing any of them from the chain eliminate the hum?
Re: Really Quiet Power Supply
Posted:
Sat Mar 06, 2010 2:18 amby Stringmaster
On battery it is dead quiet, and I'm testing with just the Tone Press.
Re: Really Quiet Power Supply
Posted:
Sat Mar 06, 2010 6:43 amby David Barber
Stringmaster wrote:On battery it is dead quiet, and I'm testing with just the Tone Press.
Boss adapter is plugged into the same outlet as the amp?
Re: Really Quiet Power Supply
Posted:
Sat Mar 06, 2010 1:06 pmby Stringmaster
Both are plugged into the same surge protector.
Re: Really Quiet Power Supply
Posted:
Sun Mar 07, 2010 1:05 amby David Barber
Have you tried a voodoo labs Pedal power 2?
Re: Really Quiet Power Supply
Posted:
Sun Mar 07, 2010 1:34 amby Stringmaster
No, the only supply I have is the Roland. I am trying to figure out if I need to get something like the Pedal Power 2, or if that would even help.
Re: Really Quiet Power Supply
Posted:
Sun Mar 07, 2010 2:48 amby David Barber
Stringmaster wrote:No, the only supply I have is the Roland. I am trying to figure out if I need to get something like the Pedal Power 2, or if that would even help.
If you can, take your rig to a local shop and try another supply...before you buy.
This is going through an amp, not a recording or mixing rig, right?