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Location: Utah | Hey guys. I've got an Adamas and I always plug into the 1/4" jack but I decided to try the xlr route instead. I'm getting no sound at all, except when I turn the tuner on it is there but it is really quiet. When I turn the tuner off the sound is there for literally a half second while the tuner is shutting off, and it is loud and not quiet for that half second. It is equipped with an OP50 unit. I'm running into an Acoustic AG30 amp. Does it have something to do with phantom power or something? |
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Location: closely held secret |
You also need to use an XLR cable with pin 1 grounded to the shell. Try that with phantom power on and it should work fine.
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Location: Utah | Try plugging a regular cord into the 1/4" jack to activate the electronics, and then plug the XLR cable in for sound. In some models the power switch is in the 1/4" jack, so something has to be plugged in there to get the preamp to turn on. Even just a dummy plug which is a 1/4" plug all by itself with no cord attached to it.
Before you use phantom power be sure your preamp is designed for it. Not all were. |
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Location: Utah | FlySig - 2014-09-22 9:03 AM
Try plugging a regular cord into the 1/4" jack to activate the electronics, and then plug the XLR cable in for sound. In some models the power switch is in the 1/4" jack, so something has to be plugged in there to get the preamp to turn on. Even just a dummy plug which is a 1/4" plug all by itself with no cord attached to it.
Dude, you rock. Did the dummy plug thing and it worked. And oh my hell is the XLR louder than the 1/4", which is exactly what I was hoping for. Thank you. |
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Location: Utah | Glad that worked for you. If you don't want to do the dummy plug thing, follow Waskel's suggestion. Alpep sells an XLR cable wired that way. www.lostartvintage.com |
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Location: Italia, Zianigo di Mirano (Venezia) | FlySig - 2014-09-22 4:03 PM
Try plugging a regular cord into the 1/4" jack to activate the electronics, and then plug the XLR cable in for sound. In some models the power switch is in the 1/4" jack, so something has to be plugged in there to get the preamp to turn on. Even just a dummy plug which is a 1/4" plug all by itself with no cord attached to it.
Before you use phantom power be sure your preamp is designed for it. Not all were. excellent response , FlySyg . Ah, I think I remember that you had a Op Pro Studio with the red led of battery always turn on : you're more successful to repair it ?
Also I have a preamp in these conditions .......grrrrrrr
Edited by titti 2014-09-24 11:49 AM
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Location: Utah | No, the Studio is dead. I may have killed it with phantom power, or it may have just been defective. |
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Location: Sydney, Australia | I have 3 VIPs. All of them work fine with phantom power, although they don't "use" the phantom power. |
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Location: Italia, Zianigo di Mirano (Venezia) | richard.parker - 2014-09-26 2:24 AM
I have 3 VIPs. All of them work fine with phantom power, although they don't "use" the phantom power. ??? |
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Location: Italia, Zianigo di Mirano (Venezia) | FlySig - 2014-09-24 7:49 PM
No, the Studio is dead. I may have killed it with phantom power, or it may have just been defective. ... my preamp works , but is always the red LED light on ....
Edited by titti 2014-09-26 12:40 PM
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No signal from xlr output