Vrx918Sp Input Panel - JBL VRX932LAP User Manual

VRX918SP INPUT PANEL

The VRX918SP input panel features analog audio inputs and sophisticated onboard digital signal processing
technology. Precision Bandpass limiting and automatic self-protection functions ensure maximum performance.
CONTROLS
1. AUDIO OUT
Two-position push-button DSP preset selection switch,
enables an 80Hz Hi-Pass filter (graph 1) or direct loop
through (graph 2) to the audio output. When set to the
"Hi-Pass 80Hz" position, the signal leading to the
AUIDIO OUT connector is shaped in such a way (graph 1)
that allows a smooth transition to a connected full range
speaker, crossed over at 80Hz.
(The Hi-Pass frequency is fixed at 80Hz)
80Hz
graph 1
When connecting to a second VRX918SP sub woofer
set the switch of the first subwoofer to bypass and the
last subwoofer to Hi-Pass, so that the last subwoofer
in the signal chain provides the xover to the full range
system.
2. SUB WOOFER LO-PASS
Two-position push button DSP preset selection switch,
engages either an 80Hz or 120Hz Lo-Pass filter (graph 3).
The default 80Hz position is recommended. The120Hz
Lo-Pass filter option becomes useful when external
signal processing is used or if the low frequency extension
of the companion full range system does not reach 80Hz
graph 3
80Hz
3. ATTENUATION
Detented rotary input sensitivity control attenuates level in 0.5 dB steps. The Input Sensitivity is +4 dBU
nominal (+20 dBU clip) with the control fully counter clockwise, and -10 dBV nominal (+4 dBU clip) with
the control fully clockwise. (Note: Professional mixing boards with XLR outputs should use the fully counter-
clockwise position as a starting point. Whereas semi-professional equipment with 1.4 inch jack's, RCA
connectors and unbalanced sources should start at the middle position - watch for clipping (peak LED)!
4. RESET
Press to reset line voltage circuit breaker.
5. LINE SELECT
Two-position slide switch, set to 115V position for (100-120V~) or 230V position for (220-240V~) operation.
Audio
Out
graph 2
120Hz
10
Audio
Out
12
9
11 5
1
2
3
6
7
8
4
17