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ZX AMPLIFIERS
ZX.4-SERIES AMPLIFIERS Owner’s Manual
INSTALLATION
Mounting: Choose a structurally sound location to mount your KICKER amplifi er. Make sure there are no items
behind the area where the screws will be driven. Choose a location that allows at least 4” (10cm) of open
ventilation for the amplifi er. If possible, mount the amplifi er in the climate-controlled passenger compartment. Drill
four holes using a 7/64” (3mm) bit and use the supplied #8 screws to mount the amplifi er.
Wiring: Disconnect the vehicle’s battery to avoid an electrical short. Then, connect the ground wire to the
amplifi er. Make the ground wire short, 24” (60cm) or less, and connect it to a paint-and-corrosion-free, solid,
metal area of the vehicle’s chassis. Adding an additional ground wire of this same gauge (or larger) between the
battery’s negative post and the vehicle chassis is recommended.
The ZX amplifi er has dual input sensitivity differential RCA inputs which will receive either high or low level signals
from your car stereo’s source unit. Ideally, when connecting the source unit to the amplifi er, the ZX amplifi er’s
input level switch should be set to “LO” and a low-level signal should run from the source unit’s stereo RCA
output to the stereo RCA input on the end panel of the amplifi er using RCA interconnect cable. If a low-level
stereo RCA output is not available on the source unit, the signal can be delivered to the amplifi er using the
high-level speaker outputs on the source unit. Set the input level switch on the end panel of the amplifi er to “HI”.
Crimp and solder RCA connectors to the end of the speaker wire running from the high-level speaker outputs on
PERFORMANCE
Authorized KICKER Dealer:
Purchase Date:
Model Number:
Serial Number:
Model: ZX350.4 ZX650.4
RMS Power, all channels driven
@ 14.4V, 4Ω stereo, 1% THD+N
@ 14.4V, 2Ω stereo, 1% THD+N
@ 14.4V, 4Ω mono, 1% THD+N
60W x 4
90W x 4
175W x 2
120W x 4
160W x 4
320W x 2
Length 13-1/2” (342mm) 20” (507mm)
Specifi cations common to all models:
Height 2-1/8” (54mm)
Width 9-5/8” (244mm)
Frequency Response ± 1dB 20Hz–20kHz
Signal-to-noise Ratio >95dB, A-weighted, re: rated power
Input Sensitivity Low Level: 125mV–5V
High Level: 250mV–10V
Selectable Electronic Crossover Variable HI, LO, or OFF (bypass) | 50–200Hz, 12dB/octave
Bass Boost Variable 0–18dB @ 40Hz
Pro Tip: To get the best performance from your new KICKER Amplifi er and extend the warranty by 1 year, use
genuine KICKER accessories and wiring.
MODEL: ZX350.4 / ZX650.4
2010 ZX 350.4 650.4 RevG.indd 22010 ZX 350.4 650.4 RevG.indd 2 1/15/2010 11:15:28 AM1/15/2010 11:15:28 AM