JBL Soundzone Z21S Owner's Manual page 8

REAR PANEL
Boxes in black are the con-
trols also found on the JBL
Z21S Sound Zone Controller.
6
F
VCA Accessory
This provides for future accessory implementation.
G
Source Inputs
Connect your RCA equipped source signals here.
H
Microphone Input
Connect the paging microphone here. Line level paging inputs
from telephone systems must be externally transformer isolated
and reduced in volume to microphone level.
I
High Pass Filter
This switch activates the Zone output 100 Hz High Pass Filter,
which allows all frequencies above 100Hz to pass. Use this filter if
the bass response of your room is too boomy, when you are using
inexpensive loudspeaker transformers or in conjunction with the
subwoofer crossover (see subwoofer crossover section).
J
AutoWarmth™ Indicators
These indicators flash red when the AutoWarmth circuitry is being
activated.
K
Zone Remote Jacks
These inputs are for the optional Remote Wall Plates ZR-3SV, ZR-
2SV, and ZR-V.
L
Isolated Auxiliary Output
This sends a transformer isolated mono signal for a music-on-hold
system, or for a separate mono auxiliary Zone. The +/- outputs are
600 Ohm transformer isolated so that they can interface to another
system (telephone or remote amplifier) without having undesirable
ground interaction. The level control adjusts the output level to
match a variety of applications.
N : A ,
OTE S SHIPPED THE SOURCE FEEDING THE
S S . W
OURCE ELECTOR HATEVER SOURCE IS SELECTED BY
A O . T
UXILIARY UTPUT HIS CAN BE CHANGED TO ALWAYS BE
.
F Z1 S1
JUMPER ROM TO
A O
UXILIARY UTPUT IS SELECTED BY THE
Z 1
ONE IS WHAT COMES OUT OF THE
S
OURCE
Z1 S1
Z 1
ONE
1
BY MOVING AN INTERNAL