Option F: Volume/Tone - Volume/Tone - ToneStyler DUO
Option F: Stacked Volume/Tone - Stacked Volume/Tone - ToneStyler DUO
Stellartone Jazz Bass Wiring Diagram F - 2.4 MB
For three-knob volume-volume-tone basses (J-Bass style)
Page one shows the original Fender Jazz Bass wiring. Page two shows the two original 250kΩ neck & bridge pickup volume pots replaced with two stacked-knob dual-concentric master volume/tone pots; the original 250kΩ "master" tone pot is replaced with a ToneStyler DUO.
Open the PDF in full-page view, and use your mouse wheel or page buttons to "flip" back and forth to compare the easy "before" and "after" wiring. For a clear close-up view of all wiring details, zoom in to the 100% - 400% image size range.
The pair of stacked volume/tone knobs allows five controls in the space of three. The inner knobs are the new pickup volumes, and the outer rings are the new standard tone controls. The tone pots and the ToneStyler operate independently, separately or together.
This customized stacked-knob plan offers the same four independent pickup volume and tone controls as first featured on Fender's vintage 1960 Jazz Bass... plus adding a modern fifth control: a ToneStyler BASS DUO SIX!
In 1960, Fender's first-generation Jazz Bass featured two stacked dual-concentric knobs, and each pickup was correctly-wired "pre-volume" to separate tone circuits. But, in 1963, Fender introduced a long-standing signal flow error by replacing the two stacked-knob "pre-volume" tone circuits with one simpler (and less costly) tone pot, improperly-wired "post-volumes".
The resulting sonic flaw is unnoticeable while one or both volumes are set on maximum. However, if both volumes are set below maximum, an adverse interaction occurs: the "post-volume" tone pot now controls the cable and the amp, not the pickups! This creates a dull, muddy tone, and loss of signal strength.
The ToneStyler DUO solves this problem by properly-controlling each pickup "pre-volume", via two separate tone circuits. Dual electrically-independent ToneStyler circuits are paired inside one compact polymer module, and both are operated at the same time using one common actuator shaft & knob. Volume adjustments have zero adverse effect on the 12 discrete EQ circuits. Because the ToneStyler re-uses the original Fender tone knob, the appearance is unchanged.