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MANUAL
ONBOARD BASS PREAMP (4-KNOB SYSTEM)
Master Volume / Balance / Vintage Tone Control (P/P) / Treble and Bass (stacked)
Thank you for purchasing your Sadowsky® Onboard Bass Preamp
4-Knob system! This preamp is designed for installation on most
J-style basses with a metal control plate. On newer active J-style
basses with a side jack and a battery compartment, usually no
modification is required. Passive vintage style J-basses with control
plates require moving the jack to the side of the bass, and routing
a rear cavity large enough to contain the battery and the circuit
board. If you do not have experience with wiring, soldering, routing
or drilling or if you are unsure how to proceed with the installation,
we strongly recommend that the installation is performed by a
professional guitar technician. We recommend shielding of the
control cavity and pickup cavities during the installation.
Controls
The controls are: Volume – Pan (Balance) – VTC (Vintage Tone Control)
– Treble / Bass. The treble and bass controls are boost only - flat
response is with the controls at their complete counterclockwise
position. Do not automatically go to full treble and bass boost – start
from flat response and then boost treble and bass as desired. Pull
the VTC knob for total preamp bypass.
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Summary of Contents for Sadowsky ONBOARD BASS PREAMP
- Page 1 ONBOARD BASS PREAMP (4-KNOB SYSTEM) Master Volume / Balance / Vintage Tone Control (P/P) / Treble and Bass (stacked) Thank you for purchasing your Sadowsky® Onboard Bass Preamp 4-Knob system! This preamp is designed for installation on most J-style basses with a metal control plate. On newer active J-style basses with a side jack and a battery compartment, usually no modification is required.
- Page 2 Onboard Bass Preamp (4-Knob System) Master Volume / Balance / Vintage Tone Control (P/P) / Treble and Bass (stacked) Neck Pickup Bridge Pickup Ground Wire From Bridge Hot Output Hot Output Black Brown Capacitor 100 pf Orange Yellow Volume Capacitor Green .047 uf...
- Page 3 Pickups This system is not compatible with active pickups requiring anything else than a 250K or 500K volume or balance pot. For systems with active pickups, please custom order a parts only preamp kit and use your original volume pot. Note: Turn the balance (pan) control counterclockwise to select the pickup in the neck position and clockwise to select the pickup in the bridge position.