GTQ 190 - English 06/03/98 11:49 Side 9
Y Simultaneous Stereo + Mono Connection�
Each of the two groups of the GTQ amplifier
may be used to drive a stereo pair of
speakers with a mono speaker at the same
time. This is sometimes used for center-Keep the wire as short as possible. Do
speaker applications or for inexpensive(�)(+) L(+)(�)
not splice together shielded wires. Do
subwoofer addition with two-outputCC
not run audio signal wires alongside
amplifiers. Unlike a true bi-amplified
power wires for an extended length
subwoofer connection, however, this type of
either for the amp or the vehicleOs
system configuration does not provide finestandard power wires. When wires are
control of subwoofer-satellite balance. It
run for long distances, separate theSPEAKER OUTPUTS
requires the use of a passive subwooferLINE LEVELINPUTPREAMPSPEAKER LEVEL INPUTSOUTPUTS+R GR2 L�� ++ R �BRIDGE+ L �FUSEPOWER
audio signal wires from power supplyGR1GR2GR1GR230A
crossover instead of the superior activeGR2L
wires or vehicle wiring harnesses asGR130A
circuitry already built into GTQ amplifiers,+ �� +RR GR1 LBATT(+)REMOTE GND
much as possible. When signal wires and+ R �BRIDGE+ L �
and it does not separate the power amps
power wires must cross, try to keep them
driving the satellites from the amps driving
perpendicular. Avoid routing any wires
the subwoofer. With the 4 speaker outputs
near accessories such as ignition control
already available on the GTQ amplifier, a
modules, tachometers, fuel pumps or fan
stereo + mono connection for subwoofersmotors.
should not be necessary. If you wish to add
Y The line-level inputs of GTQ amplifiers
a center speaker, connect the main pair of
accept standard phono plugs (also called
stereo speakers as in the stereo mode;
RCA plugs). The outputs of most head
connect the mono speaker as indicated on(�)(+)
units, equalizers, or crossovers also accept
page 9 for bridge-mode connection. A high-
phono plugs. If another type of connector
power L-Pad or power fader can be used to
is used, adapters or special cables may be
attenuate the center channel for proper level
needed. Proper wire and connectors can
matching. Each speaker should have anLINE LEVELINPUTOUTPUTSPREAMPSPEAKER LEVEL INPUTSR GR2 LBRIDGESPEAKER OUTPUTS
be obtained from any JBL authorizedGR1GR2GR1GR2+�� ++ R �+ L �FUSEPOWER
impedance that is equal to or greater than 4installation specialist.30ALGR2
ohms. The input-mode switch for the+ �� +GR130AR GR1 L
Y Note: GTQ amplifiers have 2 built-inRBATT(+)REMOTE GND
channel pair being used in Simultaneous+ R �BRIDGE+ L �
frequency-selectable low-pass crossovers
Stereo + Mono should be set to STEREO.
and also 2 frequency-selectable high-s Manual
pass crossovers. Be sure the crossover
Audio Input Connectionsswitches for each group and the preamp
(+)(�)(+)(�)
Line-Level Input Connectionsoutputs are properly set for the chosen
Y Proper wiring between the signalsystem configuration (see OTypical
source, any other components in theApplications� and OAdd-On and Upgrade
system, and the GTQ amplifier will helpSteps� sections for suggestions). If you
keep noise levels in the system low. Usehave any questions about how to set the
high-quality, twisted-pair cable or low-crossover switches, contact your localOwnerO
capacitance shielded wire. JBL dealer.Simultaneous Stereo-Mono Connection Diagrams
09 |
ACEC
