Crest Audio HP-EIGHT, Owner'S Manual

Page: 53 / 84

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L-R connectors- rear panel
The HP-Eight L-R output connections are located on the Master rear output
panel. Each output features a male XLR output connector, along with a 1/4” TRS
Insert connector.The output is a cross-coupled, balanced XLR jack.
The TRS Insert jack is wired as Tip=Send, Ring=Return, Sleeve= Audio Gnd.This
is the “industry-standard” wiring scheme for most single-jack inserts.The Insert
send-point is located directly after the main mix amp, the Insert return feeds the
top of the 100mm fader, or the top of the rotary level pot if Fader-Flip is active
(see Block Diagram).
main L-R output
- male XLR
jack
The main output signal is available at this output jack.
Pin2 is +Drive, Pin3 is -Drive, Pin1 is Chassis Ground.
Drive impedance is (50
Ω
each leg)
Nominal Operating Level= +4dBu
Max Output Level= +26dBu (into 2k
Ω
or higher)
insert jack
1/4" TRS
jack
This switching 1/4” TRS jack allows an external signal processor to be
inserted into the signal path of the main audio bus.The tip carries the SEND
signal from the bus, and the ring carries the RETURN signal back to the aux.
The Insert-Send point is located directly after the main mix amp, the Return
comes back at the top of the main level control.
Tip is Send, Ring is Return, Sleeve is Audio Ground.
Send (output) impedance is 50
Ω
Return (input) impedance is 5K
Ω
Nominal Operating Level= -2dBu
NOTE: To avoid any degradation of the HP-Eight’s signal path, any processing
gear patched into the insert jack should have a low impedance output (<100
Ω
)
and must be capable of cleanly driving a 2K
Ω
load to +21dBu.
1 2
3
1= CHS
2= OUT +
3= OUT –
M - XLR
+4dBu
100
Ω
Electronic
Balanced Main Outputs
rear panel legend info
NOTE:
The Fader-Flip switch
does not change the function
of any of the rear-panel jacks.
The L-R Output and Insert
jacks are always located
here. Similarly, the Aux 9-10
Output and Insert jacks
always retain their same
function.
+
T= Send
R= Rtn
S= GND
-2dBu
Unbal Send • 50
Ω
Unbal Rtn • 15K
Ω
TRS
Bus Inserts