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Push/pull mod for 4001
Posted: Fri Aug 31, 2007 2:41 am
by heptagram
Is it possible to have the push/pull pot done on my '74 4001? If so, what do I need and where in Australia (Melbourne) can I have it done?
Cheers!
Posted: Fri Aug 31, 2007 8:22 am
by jwr2
yes you can do it to a 4001 ... you can order the parts from a Ric dealer or from the ric website and if you can read schematic diagram and use a soldering iron then you can install it yourself ...
Posted: Fri Aug 31, 2007 9:08 am
by ilan
Posted: Fri Aug 31, 2007 10:31 am
by johnallg
Hey! I recognize that drawing!
Posted: Fri Aug 31, 2007 11:00 am
by ilan
It was worth saving!

Posted: Fri Aug 31, 2007 12:15 pm
by xsubs
Hey! I do to!

Posted: Fri Aug 31, 2007 12:21 pm
by xsubs
Josh,
BEWARE that the cavity in your bass will not be deep enough!
I just installed the VTC in my 2000 V63, and it worked flawlessly. The pot is exactly ONE INCH deep, and so is the cavity in my bass. Somewhere in the 90's IIRC JH said the cavity dimensions changed.
Anyone else remember the year?
Posted: Fri Aug 31, 2007 4:48 pm
by jwr2
I put one of those in a 4001c64 and it fit fine ...
if it were me I would just bypass the cap ... it is cheaper and it is less work ...
Posted: Fri Aug 31, 2007 8:34 pm
by heptagram
Thanks for the info guys, but I wouldn't be able to do this myself...
Which parts do I need to order? I'm getting a 4003 soon, but would still like to have the push/pull with the 4001
Cheers!
Posted: Tue Sep 04, 2007 2:28 pm
by johnallg
You need the Tone Switch/Pot and some hookup wire. Your 4001 should already have the .0047uF cap (check before ordering). You replace the treble tone pot with the pot/switch, wiring the pot one for one with the pot you take out except for the red wire from the pickup switch, which goes to the top of the tone switch. Then wire the .0047uF cap from the pickup switch to the tone pot, then use hookup wire from the same lug on the tone pot to the middle of the switch. All done. This is wired for cap out of the circuit when the push/pull switch is down. If you want the capped sound always and switched out when pulled up, then put the red wire from the pickup switch to the bottom lug of the tone switch, not the top.
pot/switch
cap if needed.
Re:
Posted: Wed Nov 07, 2007 7:31 am
by anoukane
xsubs wrote:Josh,
BEWARE that the cavity in your bass will not be deep enough!
I just installed the VTC in my 2000 V63, and it worked flawlessly. The pot is exactly ONE INCH deep, and so is the cavity in my bass. Somewhere in the 90's IIRC JH said the cavity dimensions changed.
Anyone else remember the year?
Sean, where did youu get your push/pull pot from? Mine doesn't fit in my V63.