Features
Controls
Connections

Features

Class D Amplifier Design: The Kicker IQ500.4 is a 4-channel Class D amplifier. Class D amps are known for small footprints, as well as highly efficient power plants. The IQ-series amplifiers feature TWEEQ tuning software, giving you the ability to configure your amplifier exactly the way you want with a PC or tablet. Kicker's IQ-series amplifiers carry a 3-year warranty.

CEA-2006 Compliant: The Kicker IQ500.4'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. The CEA-2006B specifications for the IQ500.4 are as follows:

• Power Output: 65 watts RMS x 4 (4Ω, 14.4-volts, 1% THD)
• Signal-to-Noise Ratio: -80dB (1W, A-weighted)

Kicker Power Output Specs: Kicker publishes the following power specifications (14.4-volts, ≤1% THD+N):

• RMS Power at 4Ω Stereo: 65 watts RMS x 4
• RMS Power at 2Ω Stereo: 125 watts RMS x 4
• RMS Power at 4Ω Bridged Mono: 250 watts RMS x 2

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

TWEEQ Tuning Software: If you don't want to be limited to just the on-board controls, the IQ500.4 lets you connect your PC or tablet for a wide range of audio processing. Kicker's TWEEQ DSP software offers a 31-band EQ with +/-12dB adjustments, 24dB per octave crossovers, digital time alignment and phase options for all connected speakers, a full limiter/compressor, and an input mixer. A simpler option lets you choose the speaker size, location, and channel information, and let the software do the rest. When using the TWEEQ software, the on-board controls are disabled. Download the TWEEQ application to your PC (Windows 7, 8, or 10), connect it via USB (Mini-B USB cable required), and start exploring. With the optional Kicker IQI Bluetooth interface, you can use your iOS (8.0 or later) or Android (4.0.3 and up) tablet or phone to make your adjustments wirelessly. Up to 4 amps can be controlled with the IQI interface.

Auto Turn-On: The Auto Turn-On switch offers three options:

• +12 V: The amp turns on when +12 volts is applied to the remote terminal.
• DC Offset: The amp turns on when a 6 volt surge is detected on the signal inputs (from a speaker-level source).
• Audio: The amp turns on when an incoming audio signal is detected.

Failsafe Integration Technology (F.I.T.): Kicker uses a special circuit for the audio input called Failsafe Integration Technology, or F.I.T. This special input circuitry lets you connect factory or aftermarket head units to the amplifier simply and without noise. Because of F.I.T., Kicker recommends using speaker-level inputs whenever possible, because it's a cleaner, stronger signal. Optional Kicker KISL speaker wire-to-RCA adapters make it easy to convert your head unit's speaker level outputs to RCA plugs.

Protection Circuitry: The IQ500.4 has protection circuitry that will turn the amp off in the event of overheating (thermal), over voltage, under voltage, and over current. There are separate red LEDs on the front of the amp that illuminate when the protection circuit has engaged. This helps you quickly identify and correct the problem.

Amplifier Stacking Kit: You can stack two IQ-series amplifiers with the optional Kicker IXSK Amp Stacking Kit. The kit contains the hardware necessary to vertically stack two IQ-series or two IX-series amplifiers.

Controls

Gain: To accommodate the varying range of signal levels coming from today's factory and aftermarket radios, the Kicker IQ500.4 features an adjustable gain control (low level: 125mV-5V; high level: 250mV-10V). This means that no matter what kind of radio is connected to this amplifier, the appropriate gain control adjustment can be made to ensure loud, clear, distortion-free music. The amp provides separate Gain controls for the front (Amp 1) and rear (Amp 2) channels.

Fader: The Fader switch should be set to On if you are running two sets of inputs to the amplifier. To drive all channels from a single stereo input, the Fader switch should be Off.

Input Level: This 2-way switch lets you select the input type. You can choose Lo or Hi input.

Selectable Crossover: The amplifier offers separate crossovers for the front and rear channels. The crossovers can be set via the provided 3-way switches. You can choose between Off (no filter), HP (high-pass), or LP (low-pass). The crossover frequency is set with the rotary control between 40 and 180 Hz. The crossovers have a slope of 24dB per octave.

KickEQ Bass Boost: The KickEQ bass boost circuit provides a variable (0-18 dB) signal boost at 40 Hz. KickEQ is available for both front and rear channels.

Connections

Power Connections: The power and ground connections are set-screw terminals that will accommodate up to 4-gauge wire. The remote turn-on set-screw terminal will accept up to 8-gauge wire. The included 3mm Allen-wrench is required to tighten/loosen the terminals.

Fusing: The IQ500.4 comes with a Kicker AFS fuse holder with a 60-amp AFS fuse installed. This fuse should be installed within 18" of the amplifier. A second fuse should be installed on the power wire within 18" of the vehicle's battery. The fuse rating of the battery fuse should also be 60 Amps, or, if more than one amplifier is connected, the sum of all the external amplifier fuses.

Speaker Outputs: The Kicker IQ500.4 is equipped with set-screw speaker terminals for four speakers that will accommodate up to 8-gauge wire. The supplied 3mm Allen-wrench is required to tighten/loosen the terminals.

Input: The amplifier is equipped with two sets of RCA stereo inputs that will accept line-level or speaker-level signals. When a speaker-level signal is used, a speaker wire-to-RCA adapter, such as the Kicker KISL, is needed and the Input Level switch should be set to High.

Line Level Output: The amplifier has a pair of RCA line level outputs for feeding a full-range stereo signal to another amplifier. It is the same signal that is input through the line inputs. The amplifier's crossovers have no effect on the line level output signal.

IQI: The optional Kicker IQI Bluetooth Interface connects to the amp via this proprietary, multi-pin connector.