Can i use 12V adapter on 9V rack? - Jemsite
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post #1 of 16 (permalink) Old 04-24-2006, 02:14 PM Thread Starter
 
Join Date: May 2005
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Can i use 12V adapter on 9V rack?

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?
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post #2 of 16 (permalink) Old 04-24-2006, 03:29 PM
 
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Re: Can i use 12V adapter on 9V rack?

It'll go up in smoke...please don't try it. It says 9 volts...give it 9 volts.
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post #3 of 16 (permalink) Old 04-24-2006, 03:29 PM
 
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Re: Can i use 12V adapter on 9V rack?

yeah dont do it
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post #4 of 16 (permalink) Old 04-25-2006, 02:39 AM Thread Starter
 
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Re: Can i use 12V adapter on 9V rack?

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

lucky it hasnt smoke yet
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post #5 of 16 (permalink) Old 04-25-2006, 05:05 AM
 
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Re: Can i use 12V adapter on 9V rack?

Check the manual. You would be suprised. Some gear will accept 9 - 20v supplies and draw different currents accordingly.
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post #6 of 16 (permalink) Old 04-25-2006, 05:08 AM
 
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Re: Can i use 12V adapter on 9V rack?

yea, it should still work. I doubt it'd blow anything up.
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post #7 of 16 (permalink) Old 04-25-2006, 08:14 AM Thread Starter
 
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Re: Can i use 12V adapter on 9V rack?

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?
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post #8 of 16 (permalink) Old 04-25-2006, 09:37 AM
 
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Re: Can i use 12V adapter on 9V rack?

Whats the exact model?
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post #9 of 16 (permalink) Old 04-25-2006, 10:33 AM Thread Starter
 
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Re: Can i use 12V adapter on 9V rack?

its a Rocktron Gainiac 2
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post #10 of 16 (permalink) Old 04-25-2006, 12:02 PM
 
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Re: Can i use 12V adapter on 9V rack?

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.
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post #11 of 16 (permalink) Old 04-25-2006, 02:09 PM Thread Starter
 
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Re: Can i use 12V adapter on 9V rack?

just too many doubts

so i dont know what i should do
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post #12 of 16 (permalink) Old 04-25-2006, 02:13 PM
 
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Re: Can i use 12V adapter on 9V rack?

Go back to the shop and ask them, or even email Rocktron or call them if you can.
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post #13 of 16 (permalink) Old 04-25-2006, 03:17 PM
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Re: Can i use 12V adapter on 9V rack?

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
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post #14 of 16 (permalink) Old 04-25-2006, 06:28 PM
 
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Re: Can i use 12V adapter on 9V rack?

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...
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post #15 of 16 (permalink) Old 04-25-2006, 06:32 PM
 
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Re: Can i use 12V adapter on 9V rack?

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