ESC 300 Sub (serv.man14) - JBL Audio User Guide / Operation Manual. Page 5

1. Mute
From either the front panel 
or the remote control, press
(Mute) to lower the volume
completely. The mute symbol
indicator (27) will begin to flash.
When you press either 
of the mute buttons again, the
volume will return to its previous
setting. Note: The mute function
can also be turned 
off by pressing either of the
volume buttons on the front
panel or the remote control.

2. 0dB
Press this button to reset the
Center, Surround, Balance,
Treble, and Bass controls to
their default positions.

3. Test
Press this button to activate
the Test Tone mode (see “Test
Tone” section).

4. Volume
Press ( ) on the remote 
control or the front panel 
to raise the system’s volume.
Press ( ) on the remote 
control or the front panel to
lower the system’s volume.

5. Center
Press (+) on the remote control
to increase the relative volume
of the center channel. Press (–)
on the remote control to
decrease the relative volume of
the center channel.

Master On/Off Switch
To operate unit, place this switch in the On/Standby
position. The system will go into standby when no
signal has been received for approximately five
minutes.

TREBLE

BASS

INPUT

CENTER

SURROUND

BALANCE

TEST

MUTE

0dB

Video

Aux

Pro 
Logic 

Phantom

Simulated

3 Stereo

Stereo

SURROUND

MODES

VOLUME

<

<

+

+

+

Push small tab towards 
battery slot and pull battery
drawer out.

Remove old battery.

Insert new battery with “+” side
up, and slide battery 
drawer back into remote.