Joined:
February 2013
Posts: 1
| I'm new here, and looking to find some help relating to my OP24 preamp in my recently acquired Ovation Legend 1756 12-string.
I've been trying to make an external power supply to run the preamp via a stereo (TRS) cable, as I don't really want to have to keep taking off my strings to replace the internal battery. I thought this would be easy, as I have basic understaning of electronics, and I know it works because my other Takamine 6 string powers it's preamp in this way (and there are other external power pedals eg X-Bat which do just this)
But I just can't get it work with the OP24. I seem to be able to get power to the preamp, but I 'm not getting any audio signal coming back.
Basically I'm send +9v to the ring which is then going to where the internal battery +9v goes to. But I'm confused about what to do with the grounds as there is a 0v rail on the PCB and a ground rail also on the PCB.
Maybe it just won't work, but I'd like to find a solution!
Many thanks for any light people can shed on this for me.
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Newb - OP24 Preamp help!
