V72..once again!

Finstad · 20th November 2004

I bought a separate phantompower box from Proel. Then I used my voltmeter on the output (the part who goes into my V72), I could read 36 volt. Is this usual, or will this damage my transformator in the mic pre??? The power also was there after I have connected the mic.
Someone who know about racks to put v72`s into?

Finstad

Fletcher · 21st November 2004

You should have had +48vdc at the front of your V-72 not +36vdc. I don't know the "phantom" box you're talking about, but usually phantom power is applied at the lines that go to pins 2 and 3 [with the 0 volt reference to Pin 1] directly from the back of the V-72 [via an external power supply]. It is best for the transformer if this power ramps up gradually [like over the course of a second], but not mandatory.

The transformer will block the DC voltage of the phantom power from effecting the pre-amp... so as long as the phantom is wired right, you're OK.

Peace.

20th November 2004	#1
Finstad Gear nut Joined: Jan 2003 Location: Norway Posts: 85 Thread Starter	V72..once again! I bought a separate phantompower box from Proel. Then I used my voltmeter on the output (the part who goes into my V72), I could read 36 volt. Is this usual, or will this damage my transformator in the mic pre??? The power also was there after I have connected the mic. Someone who know about racks to put v72`s into? Finstad __________________ www.toproomstudio.com

21st November 2004	#2
Fletcher member no 666 Joined: Jun 2002 Location: Durham, NC Posts: 10,110	You should have had +48vdc at the front of your V-72 not +36vdc. I don't know the "phantom" box you're talking about, but usually phantom power is applied at the lines that go to pins 2 and 3 [with the 0 volt reference to Pin 1] directly from the back of the V-72 [via an external power supply]. It is best for the transformer if this power ramps up gradually [like over the course of a second], but not mandatory. The transformer will block the DC voltage of the phantom power from effecting the pre-amp... so as long as the phantom is wired right, you're OK. Peace. __________________ CN Fletcher Professional Affiliations: R/E/P Professional Recording Engineer and Producer forums - serious hobbyists welcome SoundPure.com mwagener wrote on Sat, 11 September 2004 14:33 We are selling emotions, there are no emotions in a grid Roscoe Ambel once said: Pro-Tools is to audio what fluorescent is to light

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