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Grateful Dead Music Forum

A place to talk about the music of the Grateful Dead 

 #156395  by JamGuy
 Mon Apr 24, 2017 12:20 pm
I recently purchased a Phiga Bolt... absolutely gorgeous guitar but the electronics and wiring need some love. I'm going to gut it and start from scratch. I can't fathom building such a beautiful instrument and then skimping on the guts. Cheap pots and jacks... and suspect wiring. There's a push/pull pot which I don't care for to turn the preamp on/off... and the middle toggle only splits the bridge, not the neck.

In any event... what's the general preference for wiring? Waldo's schematic or the Brawer version? Or perhaps someone else has a version they'd like to share...
I think I used the Waldo version in my Strat and it turned out great but I'm open to other suggestions. I've never noticed an out of phase sound to it like the Bawer version apparently addresses. I like the general layout and shared neck/bridge controls. Anyhow... just putting out some feelers on peoples preferences before I tear into into it.

Cheers!
 #156397  by Frank N Stein
 Mon Apr 24, 2017 12:39 pm
I agree with you on the loop being a push/pull pot on volume knob. Seems to me every time I really get going I hit that knob and poof my guitar is out of the mix. I pretty much run the loop all the time and just switch effects on or off with my feet on my pedal board. I'm definitely going to monitor this thread and see what suggestions you get since I could use the info too. Great post!!
 #156398  by TI4-1009
 Mon Apr 24, 2017 1:06 pm
When I got my Phiga Tiger five years ago I ordered it without electronics so I could do that part myself. I'd heard "some stories" about how Phil does the electronics, plus I was trying to save money, plus I like doing electronics anyway.

I used Waldo's schematic, it worked out fine. Maybe I'm reading it wrong but it sounded like the OP is asking about the push-pull for the Waldo preamp, not the OBEL loop? If I were doing it again I might take Waldo's suggestion to use the push-pull pot for the preamp so that you can leave the cable plugged in and not drain the battery.

When I did Wolfish I put in a buffer and a blaster- switchable. I like having the option, and I notice a difference between the two. It just was a bit (more) of a challenge cramming everything in the cavity.
 #156400  by Gr8fulCadi
 Mon Apr 24, 2017 1:25 pm
Yes, Phil has gone to an adjustable gain style buffer with an on/off push/pull volume pot. I don't care for the off position (no buffer) so I'm gonna do a full rewire myself. I already got Waldo's adjustable gain buffer waiting to be put in and all the switches.
 #156402  by JamGuy
 Mon Apr 24, 2017 2:42 pm
So in looking at Waldo's Rosebud schematic what's the scoop with the neck/bridge tone pot? Is that just a dual stacked pot? It's not a concentric pot is it? Would I have to use that or could I run both caps and connections from the 5-way straight to a regular 500k pot. Kinda looks like it from the schematic?
 #156403  by waldo041
 Mon Apr 24, 2017 8:43 pm
JamGuy wrote:So in looking at Waldo's Rosebud schematic what's the scoop with the neck/bridge tone pot? Is that just a dual stacked pot? It's not a concentric pot is it? Would I have to use that or could I run both caps and connections from the 5-way straight to a regular 500k pot. Kinda looks like it from the schematic?
it is a dual stacked potentiometer. you can use whichever you want to use, the single shared pot works as well.

~waldo
 #156407  by JamGuy
 Tue Apr 25, 2017 8:49 am
perfect, thank you!