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El Cheapo refers to the cheesiness of this FAQ not the Varitone, but when
you look at the parts you'll see it's not exactly a mega bucks project.
Enjoy. Original diagram from Brosnac's Guitar Electronics for Musicians.
The 99-Cent Varitone FAQ
========================
Hereıs a 1961 Gibson Varitone control just for you.
(view with Courier font)
A six position switch is wired in so one position bypasses everything.
Or, use a bypass toggle and a 5 position rotary.
Volume and Tone controls are _before_ the pickup select switch so you can
pretty much attach this to anything. Gibson volume pots are typically
500K.
I hope the diagram is clear. Itıs not very easy to represent a rotary
switch in ASCII-art. The slanted line is the switch wiper.
+-[100K]--+----+-+-+-+-+---->output (tip)
| | | | | | |
| | * * * * *
>--from PU select switch-- | * * * * *
| | a b c d e
| | | | | | |
| / 1 | | | |
| / | | | |
| / 2-+ | | |
+-----0 | | |
5 4 3---+ | |
| | | |
| +--------+ |
| |
+-------------+
Each resistor marked by two vertical ³*² is 10 Meg.
A capacitor is connected to each point marked a/b/c/d/e. They are:
a = .001 mfd
b = .003
c = .01
d = .03
e = .22
The other end of each capacitor is connected to a common point.
>--a--||--------+
>--b-----||-----+
>--c--------||--+----{this is a choke}---> to output jack ground
>--d-----||-----+
>--e--||--------+
The common point is wired through a 1.5 Henry choke (coil) to output jack
ground.
Donıt ask me where to find a 1.5 Henry choke.
³0² = Bypass position if 6 way switch is used.
5, 4, 3, 2, 1 = the 5 varied tones. The capacitors that vary by a factor
of 10 shift the filter resonance by an octave, in other words, .001 and
.01 are centered an octave apart.
This silly ASCII diagram is Copyright 1996, Craig OıDonnell.
You can use it if you ask permission.
..
-- COD
craig o'donnell ||| author of Cool Mac Sounds
dadadat--(at)--riend.ly.net
craig_o'donnel--(at)--mugbos.org
-- "What ho, Mercutio" [Wm Shaksper]
-- "What? Homer Simpson?!" [M Groening]
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