Onboard Preamp Wiring Diagram – Prewired Kit

PreampHarnessBoxInsert:Letterhead
7/17/13
1:09 PM
Page 1
SADOWSKY GUITARS LTD.
2107 41ST AVENUE • 4TH FLOOR
LONG ISLAND CITY, NY 11101
—
PHONE (718) 433-1990
FAX (718) 433-1993
Sadowsky Onboard Bass Preamp
Master Volume / Blend / Vintage Tone / Treble and Bass Boost
Pull up on tone knob for true bypass of preamp
We recommend
installation by
a professional
guitar technician.
On a typical J-style
bass, the output jack
needs to be moved to
the side of the body and
a battery compartment
must be installed in the
rear of the bass. System
operates on a single 9V
battery. No additional
headroom is gained by
using 18 volts.
For other configurations,
remove the plate. Pots
can be configured for a
4-in-line or a diamond
pattern. Threaded
potentiometer bushing
length is 3/8" for rear
control cavity
installation.
SPECIFICATIONS
Frequency Response
Power Source
Battery Life
Bass Control
Treble Control
Total Harmonic Distortion
Input Impedance
Output Impedance
5Hz to 20.9KHz (+/– 1.5db)
One 9V Battery
870 Hours*
+13db Boost @ 40Hz
+13db Boost @ 4KHz
0.18% @ 1KHz
1 Meg Ohm
1K Ohm
We highly recommend
the BATT-O-METER for
easy testing of battery level
via the output jack.
We recommend changing the
battery when the voltage
reaches 7V.
*NOTES:
Battery will drain whenever a cable is
inserted into the input jack. Switching to bypass will
not conserve battery life. Under normal use, you
should expect about six months of battery life. The
Vintage Tone Control operates in both active and
passive modes.
www.sadowsky.com/store/batt-o-meter.html
www.sadowsky.com
info@sadowsky.com
REVISED
07-17-13