Biamp Operation - Electro-Voice Fri+ 181S User Manual

Biamp Operation

F R i
S P E A K E R
S Y S T E M S
Changing the "BIAMP Mode"
All FRi-Series units are shipped from the factory in
"PASSIVE" mode operation. To change to the "BIAMP"
mode, follow these steps:
1. Remove the screws holding the input terminal cup
to the cabinet.
2. Carefully remove the assembly far enough to
get a good look at the back of the circuit board
(about six to eight inches).
3. Locate the seven-pin in-line connector, which will
be plugged onto the row of pins marked "PASSIVE"
on the circuit board.
4. Gently push the locking tab away from the
connector body and pull the connector body
straight off the pins.
5. Locate the row of pins immediately above marked
"BIAMP" and press connector body onto them.
6. Check to be sure all seven pins are engaged and
that the connector body is securely seated all the
way down in the receptacle.
7. Carefully re-install the assembly in the enclosure and
replace the mounting screws, making them snug
enough to compress the gasket for a secure air-tight
seal, but DO NOT OVER TIGHTEN!
8. Connect the high-frequency drive line to the upper
terminals (marked "INPUT BIAMP HF") and the
low-frequency drive line to the lower set of terminals
(marked FULL RANGE/BIAMP LF).
9. Double-check for correct line assignment
and polarity on each input strip.
11
Biamp Operation