Features
Controls
Connections
 

Features

CEA 2006 Compliant: The ZX350.4's power ratings are measured according to the strict standards dictated by the Consumer Electronics Association (CEA). These standards allow you to accurately compare the rated power output of all CEA 2006-compliant amplifiers, even if they come from different brands. Manufacturers who adhere to the standards can display the CEA 2006 logo on their products and packaging.

Kicker "Livin' Loud" Certified Power Certificate: The amplifier comes with a certificate that indicates the total maximum wattage of the particular amplifier, along with the model number, serial number, tested date, and whether the amplifier passed the total harmonic distortion, signal-to-noise ratio, and protection circuit tests.

Dual Input Sensitivity Differential RCA Inputs: The ZX350.4 has two pairs of RCA inputs which will receive either high or low level signals from your car stereo. The unit has an input level switch that allows you to select a low- or high-level input. A low-level signal from the stereo's preamp output is recommended. If the stereo lacks preamp outputs, you can use the unit's speaker-level outputs by attaching RCA plugs onto the speaker wire, and set the input level switch to "HI". Note: Both inputs must receive the same type of input signals. The input level switch controls both sets of inputs.

Auto Turn-on Selection: The ZX-series offers three different automatic turn-on modes that can be selected on the end panel. You can select from the following modes:

• Remote Turn-on: You can connect an 18-gauge wire from the remote turn-on lead from your source unit to the REM terminal on the amplifier. This is the preferred turn-on method.
• DC Offset Turn-on: The DC offset mode detects a 6-volt surge from the high-level speaker outputs when the source unit is turned on. If remote turn-on is not an option, this is the next best choice.
• Signal Sense Turn-on: This method detects the incoming audio signal from your source unit and automatically turns on the amp. This method will not work properly if the input gain control is not set properly.

Protection Circuitry: The ZX350.4's protection circuitry guards against accidents and undesired operation. The amp is protected by thermal protection, voltage protection, and short circuit protection. The Power LED on the left side of the amp glows green and the power indicator on top of the amp glows red when the amplifier is connected correctly and the protection has not been engaged. If the red Protection LED illuminates, the amp's protection circuit has been engaged and the amplifier is in protect mode until the problem is resolved.

Optional ZX-Series End Caps: You can add the optional ZX-series amplifier end caps (2068ZXEC, sold separately) to this amplifier. These plastic end caps cover the wire terminals and controls located on the ends of the amp for a clean installation. When installed, the end caps add approximately 2-5/8" to the overall width of the amplifier.

Controls

Crossover: The ZX350.4 has two internal crossovers that can be independently set for high-pass or low-pass operation, or turned off for full-range operation. When engaged, the crossovers are continually variable from 50 to 200 Hz. The filters have a slope of 12dB per octave.

Fader Button: You can connect one or two pairs of input cables to the amplifier. If only one pair of inputs is available, the amp's Fader button allows you to feed signals to all four channels from the single input pair. In this case, the fader of the source unit will not affect the output of the amplifier. If two pairs of inputs are available, the amp's Fader button should be pushed in (Off Position), allowing you to use the fader of the source unit to control the front to rear volume of the amplifier.

KICKEQ Bass Boost: The ZX350.4's KICKEQ bass boost circuit provides a variable 0-18dB signal boost at 40Hz. You can independently apply bass boost to the front (Amp 1) and back channels (Amp 2).

Connections

Left Side of Amplifier:

• +12V (power): gold-plated set screw terminal (accepts up to 4 gauge wire)
• REM (remote turn-on): gold-plated set screw terminal (accepts up to 8 gauge wire)
• GND (ground): gold-plated screw set terminal (accepts up to 4 gauge wire)
• Fuse: two 20-amp fuses

Right Side of Amplifier:

• Auto Turn-on Selection: 3-way switch (+12V, DC Offset, Audio)
• Input Level Switch: 2-way push button (out=Low, in=High)
• Fader Button: 2-way push button (out=On, in=Off)
• Speaker Outputs: 4 pairs of gold-plated set screw terminals (accepts up to 8 gauge wire)
• RCA Inputs: Two sets of gold-plated RCA input jacks (Amp 1 and Amp 2)
• Crossover: Two 3-way switches (Off, High, Low)

Amp Wiring Kit: Kicker recommends using an 8-gauge amp wiring kit with this amplifier.