Really Quiet Power Supply

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Really Quiet Power Supply

Postby Stringmaster » Thu Mar 04, 2010 3:58 pm

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.
56 Fender Stringmaster Triple 8 and Deluxe 8, 61 English Electronics Tonemaster, 2006 Cruztone
Fox 5D6B, Barber Tone Press, Hermida Zendrive, Hardwire RV-7 & Dl-8, Goodrich H10K, Boss PW-10
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Re: Really Quiet Power Supply

Postby David Barber » Fri Mar 05, 2010 9:29 pm

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?
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Re: Really Quiet Power Supply

Postby Stringmaster » Sat Mar 06, 2010 1:02 am

It's the heavier transform type, Roland ACR-120 9V 500mA model D9500.

I've heard conflicting reports about the switching supplies and noise.
56 Fender Stringmaster Triple 8 and Deluxe 8, 61 English Electronics Tonemaster, 2006 Cruztone
Fox 5D6B, Barber Tone Press, Hermida Zendrive, Hardwire RV-7 & Dl-8, Goodrich H10K, Boss PW-10
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Re: Really Quiet Power Supply

Postby David Barber » Sat Mar 06, 2010 1:38 am

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?
PRS SE One, PRS SE EG, PRS McCarty rosewood neck, Anderson Hollow T, Anderson Hollow Classic, Hamer Artist, Fender Strats and Teles, All Barber Pedals, Barber Echelon, Barber Energy cab.
http://www.barberelectronics.com/sounds.html
http://www.barberelectronics.com/pickuptest.htm
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Re: Really Quiet Power Supply

Postby Stringmaster » Sat Mar 06, 2010 2:18 am

On battery it is dead quiet, and I'm testing with just the Tone Press.
56 Fender Stringmaster Triple 8 and Deluxe 8, 61 English Electronics Tonemaster, 2006 Cruztone
Fox 5D6B, Barber Tone Press, Hermida Zendrive, Hardwire RV-7 & Dl-8, Goodrich H10K, Boss PW-10
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Re: Really Quiet Power Supply

Postby David Barber » Sat Mar 06, 2010 6:43 am

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?
PRS SE One, PRS SE EG, PRS McCarty rosewood neck, Anderson Hollow T, Anderson Hollow Classic, Hamer Artist, Fender Strats and Teles, All Barber Pedals, Barber Echelon, Barber Energy cab.
http://www.barberelectronics.com/sounds.html
http://www.barberelectronics.com/pickuptest.htm
http://www.barberelectronics.com
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Re: Really Quiet Power Supply

Postby Stringmaster » Sat Mar 06, 2010 1:06 pm

Both are plugged into the same surge protector.
56 Fender Stringmaster Triple 8 and Deluxe 8, 61 English Electronics Tonemaster, 2006 Cruztone
Fox 5D6B, Barber Tone Press, Hermida Zendrive, Hardwire RV-7 & Dl-8, Goodrich H10K, Boss PW-10
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Re: Really Quiet Power Supply

Postby David Barber » Sun Mar 07, 2010 1:05 am

Have you tried a voodoo labs Pedal power 2?
PRS SE One, PRS SE EG, PRS McCarty rosewood neck, Anderson Hollow T, Anderson Hollow Classic, Hamer Artist, Fender Strats and Teles, All Barber Pedals, Barber Echelon, Barber Energy cab.
http://www.barberelectronics.com/sounds.html
http://www.barberelectronics.com/pickuptest.htm
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Re: Really Quiet Power Supply

Postby Stringmaster » Sun Mar 07, 2010 1:34 am

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.
56 Fender Stringmaster Triple 8 and Deluxe 8, 61 English Electronics Tonemaster, 2006 Cruztone
Fox 5D6B, Barber Tone Press, Hermida Zendrive, Hardwire RV-7 & Dl-8, Goodrich H10K, Boss PW-10
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Re: Really Quiet Power Supply

Postby David Barber » Sun Mar 07, 2010 2:48 am

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. :D

This is going through an amp, not a recording or mixing rig, right?
PRS SE One, PRS SE EG, PRS McCarty rosewood neck, Anderson Hollow T, Anderson Hollow Classic, Hamer Artist, Fender Strats and Teles, All Barber Pedals, Barber Echelon, Barber Energy cab.
http://www.barberelectronics.com/sounds.html
http://www.barberelectronics.com/pickuptest.htm
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