Please do not call JBL for this part; we stock only the harness assemblies as supplied with the amplifier.
To get proper bass response and stereo imaging, all the speakers in the system must be “in phase.” The inputs terminals of the speakers will be marked in some way to identify positive and negative polarity. Make sure that the positive (+) speaker terminal is attached to the positive (+) amplifier connection in every speaker-to-amp connection. All two conductor speaker wire has one conductor marked in some way so it can be easily traced.
The speaker output wire harness color codes are listed below:
Speaker Output Color Codes
Left (+): | White |
Left (-): | White with Black Stripe |
Right (+): | Gray |
Right (-): | Gray with Black Stripe |
Stereo Connection – Connect each speaker directly to the speaker output harness according to the color-code listed above. The input-mode switch should be set to “STEREO”
Bridged-mode Connection – Connect the loudspeaker positive (+) terminal to the RIGHT channel positive wire (Gray). Connect the loudspeaker negative (–) terminal to the LEFT channel negative wire (White with Black stripe). The input-mode switch should be set to “R” or “L+R”.
Simultaneous Stereo + Mono Connection – The GTS100 may be used to drive a stereo pair of speakers with a mono (bridged) speaker at the
same time. This is sometimes used for center-channel applications or for inex- pensive subwoofer addition, essentially creating a 3-channel system. However, unlike a true bi-amplified subwoofer connection, this system configuration does not provide for control of sub- woofer-satellite balance, it requires the use of a passive subwoofer crossover instead of the superior active circuitry already built-in to the GTS100, and it does not separate the power amps driving the satellites from the amps driving the subwoofer. Therefore this connection is best used for addition of a center-channel, or as an interim step as you build up to a true bi-amplified subwoofer-satellite system. Connect the main pair of stereo speakers as in the stereo mode, connect the mono speaker as described above for bridge-mode connection (see diagram on page 19). For use in center channel applications, a high-power “L-Pad” or power fader can be used to attenuate the center channel for proper level matching. For subwoofer-satellite use, connect a non- polarized capacitor in series with each main speaker, and a high-power inductor (coil) in series with the subwoofer. Your authorized JBL dealer will help you choose the correct values for your par- ticular components. The input-mode switch should be set to “STEREO”.
