Rockford Fosgate Punch 851X Installation And Operation Manual page 7

7. Securely mount the amplifier to the vehicle or amp rack. Be careful not to mount the amplifier
on cardboard or plastic panels. Doing so may enable the screws to pull out from the panel due
to road vibration or sudden vehicle stops.
8. Connect the source signal to the amplifier by plugging the RCA cables/high level inputs into the
input jacks at the amplifier.
9. Connect the speakers. Strip the speaker wires 1/2" and insert into the speaker terminal and
tighten the set screw to secure into place. Be sure to maintain proper speaker polarity. DO NOT
chassis ground any of the speaker leads as unstable operation may result.
10. Perform a final check of the completed system wiring to ensure that all connections are
accurate. Check all power and ground connections for frayed wires and loose connections
which could cause problems.
NOTE: Follow the diagrams for proper signal polarity.
CAUTION: These amplifiers are not recommended for impedance loads below 2Ω
!
stereo and 4Ω bridged (mono).
Power Connection
2-Channel Wiring
• RCA Y-Adapters connect to
Front and Rear
• Gain - front and rear set
equally
• Crossover - front and rear set
identically (example; switch
to LP and frequency at 60Hz)
I
NSTALLATION
7