Can i use 12V adapter on 9V rack?

[sugizo_esp]

Hi guys

jsut recently bought a rocktron rack...it says it runs on a 9V AC 1.5a

but because i m in Aus, the music store decide to change the adapter to suit aus. but the voltages are 12V AC 1.5a

it still works

but will that do any harm?

[FastRedPonyCar]

It'll go up in smoke...please don't try it. It says 9 volts...give it 9 volts.

[mesamaster]

yeah dont do it

[sugizo_esp]

ok
i'll stop using it
go back to the store to change it

lucky it hasnt smoke yet

[Ant1981]

Check the manual. You would be suprised. Some gear will accept 9 - 20v supplies and draw different currents accordingly.

[btangel]

yea, it should still work. I doubt it'd blow anything up.

[sugizo_esp]

heres what it says on the manual

This unit accepts power from the 9VAC/1.5A adaptor supplied with the unit. This 9 volt RMS AC voltage is internally processed by a voltage doubler which generates a bipola +- 15 volts to maintain the headroom and sound quality of professional, studio quality equipment. Using an external power source such as this minimizes excessive noise and hum problems often associated with the internal transformers, providing optimal performance for the user.

now...can i use it?

[Ant1981]

Whats the exact model?

[sugizo_esp]

its a Rocktron Gainiac 2

[Ant1981]

The website isn't offering much info on it, but from what you said, it sounds like the typical circuitry inside that allows it to use a range of input voltages.

[sugizo_esp]

just too many doubts

so i dont know what i should do

[Ant1981]

Go back to the shop and ask them, or even email Rocktron or call them if you can.

[jemsite]

i would use 9v to avoid damaging the unit (unless the manufacturer says otherwise). those 3 extra volts could create problems with any part of the circuit... glen

[JESTER700]

I'd stick with 9v just to be sure. BUt then... I've measured voltage from power supplies that were off - like 12v from a 9v supply, and 15v coming from a 12v supply. Of course, if you give it a 12v supply when it wants 9v, and the supply actually puts out 15v...

[Ant1981]

Your meter used for testing is way out of calibration, I've never measured power supplies that were way off by that much.