Kicker ZX.4AMPLIFIER, ZX350.4 / ZX650.4 / ZX850.4, Congratulations on your, KICKER purchase

		ZX.4SeriesAmplifier
			Owner’sManual
FourChannelModels:		ZX350.4 / ZX650.4 / ZX850.4
	Authorized Kicker Dealer:		__________________________
Congratulations on your
KICKER purchase!	Purchase Date:		__________________________
Please record your purchase	Amplifier Model Number:		__________________________
information and keep your sales
receipt for validation of warranty.	Amplifier Serial Number:		__________________________

Installation

1.Mounting Choose a structurally sound location to mount your Kicker amplifier. 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 amplifier. If possible, mount the amplifier in the climate-controlled passenger compartment. Drill four holes using a 7/64” (3mm) bit and use the supplied #8 screws to mount the amplifier.

2.Wiring Disconnect the vehicle’s battery to avoid an electrical short. Then, connect the ground wire to the amplifier. 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 amplifier 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 amplifier, the

ZX amplifier’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 amplifier 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 amplifier using the high-level speaker outputs on the source unit. Set the input level switch on the end

panel of the amplifier to “HI”. Crimp and solder RCA connectors to the end of the speaker wire running

Figure 3

Bridged Operation (Mono)

Minimum impedance of 4 ohms while in bridged operation

24"

(60cm)

Ground

Remote

Turn-On

(45cm)

18"

+12V Fuse

Battery

Figure 4

Stereo and Mono Operation Simultaneously (SAMS)

Minimum impedance of 4 ohms bridged and 2 ohms per channel in stereo simultaneously

24"

(60cm)

Ground

Remote

Turn-On

(45cm)

18"

+12V Fuse

Battery

-

Bridge Wiring

+ -

+

Bridge Wiring

-

+

- + - +

CONFIGURATION

	from the high-level speaker outputs on the source unit and connect the wire to the RCA Inputs on the end
	panel of the amplifier as shown in					Figure 1
	Figure 1. Keep the audio signal cable		+	+ Core Cable
		>
	away from factory wiring harnesses		To Source Unit			+
	and other power wiring. If you need			Ground or Shielding		>
	to cross this wiring, cross it at a 90		High-level Speaker Output Wire		To Amplifier
INSTALLATION
	degree angle.
	Install a fuse within 18” (45cm) of the battery and in-line with the power cable connected to your amplifier.

If you ever need to remove the amplifier from the vehicle after it has been installed, the ground wire should be the last wire disconnected from the amplifier--just the opposite as when you installed it. See the chart on the following page for power and ground wire size, and fusing recommendations.

3.Configuration The following diagrams show the most common configurations for your Kicker ZX series amplifier.

Figure 2

Four Channel Operation (Stereo)

Minimum Impedance of 2 ohms per channel in stereo operation

ModelZX350.4 1 (ONE) 40 AMPERE FUSE			PowerGroundWire 8GA
ModelZX650.4	1 (ONE) 80 AMPERE FUSE		PowerGroundWire 4GA
ModelZX850.4	1 (ONE) 120 AMPERE FUSE		PowerGroundWire 2GA
Performance
Model		ZX350.4	ZX650.4	ZX850.4
RMS Power in Watts, all channels driven @14.4		60 x 4	120 x 4	175 x 4
Volts, 4Ω stereo, ≤ 1% THD+N
@ 2Ω stereo, ≤ 1% THD+N		90 x 4	170 x 4	215 x 4
@ 4Ω mono, ≤ 1% THD+N		175 x 2	325 x 2	425 x 2
Length: in(cm)		13 1/2 (34.2)	20 (50.7)	23 1/4 (59)
Specifications common to all models:
Height: in(mm)			2 1/8 (54mm)

24"

(60cm)

Ground

Remote

Turn-On

(45cm)

18"

+12V Fuse

Battery

+

-

-+

+-

-

+

Width: in(mm)	9 5/8 (244mm)
Frequency Response, ± 1 db:	20 Hz - 20 kHz
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 per octave
Bass Boost:	Variable 0 to +18dB Bass Boost @ 40Hz

2 ZX.4AMPLIFIER

Note: To get the best performance from your new Kicker Amplifier, we recommend using genuine Kicker Accessories and Wiring.

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