21
JBL Professional
DPIP – Standard Input Module
See Figure 1
The standard DPIP input module features analog audio inputs and sophisticated onboard digital signal
processing technology. Precision Bandpass limiting, pre-equalization fi lters and automatic self-test functions
ensure optimized performance. JBL engineers have calibrated DSP speaker management and limiter
parameters to insure smooth phase response and transfer function curves right out of the box.
CONTROLS
1) Subwoofer Filter Enable Select Switch
a) Momentary, Enables or disables the selected
function. On subwoofer applications the low-
pass frequency is set to 80 Hz and for full range
systems the high-pass is raised to 80 Hz. (Knee
shape and slopes are model dependent).
7) Input Sensitivity/Attenuation Control:
a) 16 dB Precision Detented rotary control, 0.5 dB
steps. Sensi4 dBu nominal (+23 dBu clip)
with the control fully counter clockwise, and -10
dBv nominal (+4 dBu clip) with the control fully
clockwise.
INDICATORS
2) Subwoofer Filter Enable
a) Orange LED, illuminates when the function is
enabled.
3) FAULT
a) Red LED, illuminates during any fault condition.
4) THERMAL PROTECTION
a) Orange LED, illuminates during thermal limiting:
ai) PULSING indicates fi rst stage of thermal
limiting, amplifi er output level is reduced to
prevent overheating.
aii) FLASHING indicates transducer thermal limits
have been exceeded. Further reduction in output level is applied.
aiii) SOLID illumination indicates thermal protection is in the third stage of protection and amplifi er shut down
may occur if immediate action is not taken to correct the external reason for excessive heating of the
amplifi er.
5) Ready
a) Green LED, illuminates when the system is ready for operation.
6) SIGNAL/CLIP
a) (Signal) Green LED, detects input signal above the threshold set at –70 dBu. b) Yellow indicates
that the audio drive signal has exceeded limits preset in DSP on any channel and compression/limiting is
active.
c) (Clip) Red LED, Clip detection monitors input, DSP, and each amplifi er output channel. The LED changes from
Green to Red when clipping THD at any point is detected.
CONNECTORS
8) Audio In
a) F-XLR Active 20K Ohm Balanced, 10K Ohm Unbalanced.
b) Pin 2 Hot (Positive voltage produces outward cone motion of L.F. Transducers).
9) Audio Out
a) M-XLR Passive Audio Pass-through.
b) Pin 2 Hot (Positive voltage produces outward cone motion of L.F. Transducers).
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Figure 1
Summary of Contents for VP Series
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