ZETA Music Systems PB-304 - Manual (Page 2)

2 Owner's Manual
Zeta Music
position on the endpin or tripod stand. The Cross-Over is made from lightweight alder, swamp ash,
and maple tonewoods and is designed to be comfortable to play with the ergonomic chest brace.
To properly maintain and familiarize yourself with your instrument, please read this owner's manual
completely.
Please Note: Keep this manual in a safe location for future reference.
Warranty: Visit
www.ZetaMusic.com to register your warranty online. Or, please fill out and mail in
the supplied warranty card.
PERFORMANCE APPLICATIONS
The Cross-Over™ Bass provides the best of both worlds – the smooth sound of a fretless bass
guitar, and the easily accessible feel of an upright bass. To play as a bass guitar, simply place a
standard guitar strap on the strap pins on the back of the Cross-Over™ Bass. Upright style playing
can be accomplished on either the Telescoping Endpin or the ZOS-5 Tripod Stand. The arched
fingerboard of the Cross-Over™ Bass allows for both pizzicato style playing (with your fingers), as
well as arco style playing (with a bow – in this case, a cello bow works best).
CONTROL FUNCTIONS
VOLUME KNOB Controls the volume of the instrument signal output. This knob is
located closest to the bridge, near the center of the instrument.
TREBLE This control is a 12dB treble boost/cut, with center detent, located next
to the volume control in the next position in line.
BASS
This control is a 12dB bass boost/cut with center detent, located next to
the bass control and third in line of the controls.
MID-RANGE
A mid-range boost/cut with center detent and frequency sweep for
semi-parametric EQ, located furthest from the bridge, in an offset
position. This is a stacked knob, with intensity on top and frequency
sweep on the bottom.
LINE OUT
A powered balanced ¼” mono-output jack. The volume knob
determines the output level of this jack. Use a standard 1/4" instrument
cord.
PICKUP SYSTEM AND PREAMP
The heart of your instrument is Zeta’s patented Strados

bridge pickup. Under each string are
special piezo pickups positioned to maximize tone and signal output while rejecting feedback. The
Cross-Over’s Strados

pickup projects warmth and clarity at any volume. The pickup has a full-
frequency response of 20-20Khz. The pickup’s audio signals are processed through an active
preamp system internally mounted within the instrument. This preamp system is powered by two 9-
volt batteries and has individual gain controls for each string, with a master level output control as
well. These controls allow adjustment of the individual strings to provide even string balance. The
controls are pre-set at the factory, but can easily be adjusted to suit or taste or needs (see: Internal
Mixing Board, below).
INTERNAL MIXING BOARD
The Cross-Over Bass features an internal mixing board, where individual string volume and master
volume can be adjusted. To access the internal mixing board, simply remove the back electronics
plate using a small Phillips screwdriver. The internal mixing board is located on the main PC board,
and can be identified by the row of 6 "trim pots" along one edge, with one additional "trim pot" in
the lower right hand corner of the board. Please refer to the diagram on PAGE 6.