Thread: Phantom power
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Old 06-27-2012, 03:13 AM
VKB VKB is offline
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According to the following alpha plus review, this is it except the 24v* doesn't sound right, since the Godin duet/ Yamaha silent guitar etc. Use a 9v battery. Problem?

Quote:
Originally Posted by Bob Thomas
If you’re using a microphone or a line output from an instrument preamp or effects unit (either balanced or unbalanced, on XLR or jack) you’ll use Input One. On this input alone, 24 Volts of phantom power for condenser microphones is permanently present on the XLR, so if you’ve got a unit that doesn’t like to see Volts sitting across its XLR balanced output (the TC Electronic G-Natural springs to mind) then don’t plug it in here. On the other hand, if, like me, you either regularly use condenser microphones or you’ve got an XLR-terminated, cable-mounted preamp that needs phantom power to operate, you’ll be very happy indeed.
The review mentioned output two replacing a 9v battery specifically, but this doesn't sound right either (and some kind of modification is obviously required):
Quote:
Input Two is a high-impedance, unbalanced input with a stereo jack, best suited to pickups or line sources. The sole reason for the stereo jack is that there is an option (which requires an engineer) to add a +15V DC feed at the ring contact, giving you a source of power for any suitable electronics that are onboard your instruments. It’s worth noting that this supply isn’t the same as you’d commonly find powering the microphone in pickup/microphone combinations, it is simply here to give you an alternative power supply to the ubiquitous 9V battery, and you’d need to have your onboard electronics rewired slightly to take advantage of it.

*and according to AER's spec page, that should probably be 48v anyway.

Last edited by VKB; 06-27-2012 at 05:20 AM.
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