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Phantom Power Mod for MB-1/MP-1?

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BoWeevil2017:
Hello Midi Experts!
I am currently using a modified FCB1010 with a phantom power mod over 5-pin midi.
I know that the MB-1/MP-1 have a 7-pin midi connector mated to a 9v DC in jack.
My question is around the possibility of just "bridging" pins 6 and 7, which are carrying the power in the MB-1 scenario, to pins 1 and 3, which normally carry the power in the 5-pin scenario?
It seems fairly straightforward to me, unless I am missing something in regards to how pins 1 and 3 are being used in the MB-1 scenario?
Because in the 5-pin scenario, they are not used at all, and therefore can be used to apply the DC power.
Looking forward to any and all replies,

MarshallJMP:
Normally these are not used so it should work but just in case take a look at it before you do this.

MikeB:
I have been considering doing this for a while now and have been internally debating which way to go.
1.  Do the 5 pin phantom power mod and use an insert cable: http://www.dmvelectronics.com/store/pc/viewPrd.asp?idproduct=4&idcategory=
2. Put in a  seven pin midi socket when I  do the phantom power mod and take the power off the appropriate pin.
Haven't really made a decision yet, but am leaning towards option 2.

Kim:
Some helpful Phantom Power info located in the manual of the Rolls MidiBuddy:

http://www.rolls.com/pdf/M_MP128.pdf

BoWeevil2017:
The bridge worked as expected.
I can now pass 9v power over pins 4 and 5 to my FCB1010, without any cable or connector mods.

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