7
Controls, Indicators and Connectors
See Figure 1
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. (Slopes & knee shapes are model
dependent.)
6) 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 dBV 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)
READY
a) Green LED, illuminates when the system is ready for operation
5)
THERMAL
Protection
a) Orange LED, illuminates during thermal limiting and protection:
ii
i. PULSING indicates first stage of thermal limiting, amplifier output level is reduced to prevent overheating.
i
ii. FLASHING indicates transducer thermal limits have been exceeded. Further reduction in output level is applied.
iii. SOLID illumination indicates thermal protection is in the second stage of protection and amplifier shut down
may occur if immediate action is not taken to correct the external reason for excessive heating of the amplifier.
7)
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.
7)
c) (Clip) Red LED, Clip detection monitors input, DSP, and each amplifier output channel. The LED changes from
Green to Red when clipping THD at any point is detected.
INPUT CONNECTORS
8)
AUDIO IN
a) F-XLR Active 20 KOhm Balanced, 10 KOhm 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)
AUDIO DISTRIBUTION
Connecting source audio signals to V
ER
T
EC
®
DP systems is similar to daisy-chaining multiple external amplifier channels
together. Assuming an output device source impedance of 100 Ohms and a 10:1 load to source ratio, 20 V
ER
T
EC
®
DP units
can typically be linked together on one output source without using a distribution amp.
1
3
4
5
6
7
2
8
9
Figure 1
