Megaswitch "P" & IBZ V7-7 and V8-7 - Jemsite
Pickups & wiring Discussion about pickup types, replacements, recomendations, switching, wiring diagrams and sustainer systems for ANY guitar, JEMs included.

 
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post #1 of 4 (permalink) Old 08-25-2003, 02:01 AM Thread Starter
 
Join Date: Apr 2001
Location: Minneapolis MN
Posts: 1,056
Megaswitch "P" & IBZ V7-7 and V8-7

I want to replace the switch in my 7620 with a Megaswitch Model "P" but the thing is I'm going to use Ibanez V7-7 and V8-7 pickups I just got. So they only have 3 wires coming out of them. Or am I wrong on that? I guess I've never seen how many leads the HH guitars have, only HSH. The problem is in that the wiring for the Megaswitch P shows the main ground from the bridge PU going to the switch and the "shield" from the bridge PU going to the pot. Is the shield going to the pot just because it's there (on DiMarzio's for example)and needs to be grounded and has nothing to do with the switching itself?

Will it work?
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post #2 of 4 (permalink) Old 08-25-2003, 07:52 AM
 
Join Date: Dec 2000
Location: Virginia, USA
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Re: Megaswitch "P" & IBZ V7-7 and V8-7

Quote:
Originally Posted by CrossingStar
Ibanez V7-7 and V8-7 pickups I just got. So they only have 3 wires coming out of them. Or am I wrong on that? I guess I've never seen how many leads the HH guitars have, only HSH.
the neck V7 _must_ have 4 wires in order to do the stock 7620 wiring. as i recall from my 2027, the bridge pickup only has 3. in a 3 wire humbucker, the wires are hot, ground, and the series link. however, for the P model Megaswitch, or any Megaswitch, the series link is all you should need -- you shouldn't need the individual wires unless the wiring scheme has a position with one humbucker wired in parallel [like position 2 of the stock 7620 wiring].

Quote:
Originally Posted by CrossingStar
...the wiring for the Megaswitch P shows the main ground from the bridge PU going to the switch and the "shield" from the bridge PU going to the pot. Is the shield going to the pot just because it's there (on DiMarzio's for example)and needs to be grounded and has nothing to do with the switching itself?
yes, the bare, uninsulated shield has nothing to do with the switching and needs to be grounded to ground the pickup casing and keep noise down.

the colored, insulated ground wire from the pickup however must be connected to the switch and not to the volume pot. one of the positions of the PRS rotary switch and the P Megaswitch is "outer coils in series." this means they have to run the output of one outer coil into the other outer coil, as though they were coils on the same humbucker. almost all other switch positions using 2 pickups have the 2 pickups in parallel, running both to the hot output at the same time, but not through each other. the only way this outer coils in series combination will work is if they lift the ground wire of the bridge pickup in that position.

check out the sound this gives and see if you like it.
Scott of Actual Time is offline  
post #3 of 4 (permalink) Old 08-25-2003, 02:07 PM Thread Starter
 
Join Date: Apr 2001
Location: Minneapolis MN
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alright, thanks Scott. Know of anyone who sells the P besides Stew Mac? Their $30 minimum order will force me to buy other stuff I don't really need.
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post #4 of 4 (permalink) Old 08-25-2003, 02:36 PM
 
Join Date: Dec 2000
Location: Virginia, USA
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i don't know of another supplier for the Megaswitches other than Stew Mac. the switches are made by Schaller, so they should be availible somewhere else.

in the distant past [5-6 years ago], Stew Mac was cool about not enforcing the minimum order, on me at least. i had made large orders in the past, so i don't know if that played a role.

also, check your e-mail -- i have a barely used P model Megaswitch i'm not using, that i would be happy to sell -- with no minimum order!
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