About the Kicker 42IQ500.4
Kicker's high IQ
Kicker's high IQ
Kicker has built the ultimate sound improvement, combining a powerful Class D amplifier with a digital signal processor in order for you to get the high-fidelity sound you want in your car. The amp comes with Kicker's TWEEQ™ sound-tuning software, run on your PC, iOS, or Android device, that helps you dial in your sound just the way you want it.
Power and brains
Kicker's IQ500.4 four-channel amplifier packs a 65 watts RMS per channel punch, so you know you'll hear your music loud and clear. You don't have to use any app or software to get great-sounding music with this amp — it has its own onboard tuning controls, including high- and low-pass filters, along with a bass boost on both front and rear channels. A Panel Lock button disengages the onboard controls when you do want to run things with the TWEEQ app.
TWEEQ functions and features
When you first launch TWEEQ, you'll be prompted to begin a configuration wizard that'll take you step by step through the process of selecting the different settings for speaker sizes, types, and distances. This leaves you with what Kicker calls a basic setup, a big improvement over factory sound that'll satisfy most music lovers.
The advanced features let you really get down to the nuts and bolts of sound. You'll have access to a 31-band EQ, fully adjustable crossover filters, time-alignment, and a limiter/compressor on every channel, all there to help your system sound perfect.
More for you
An optional IQI Bluetooth® interface lets you stream music from your compatible device, make hands-free phone calls, and control up to four IQ amplifiers in a large system.
Kicker Q-Class amplifiers incorporate cutting-edge technologies and superb construction to deliver an extraordinary musical experience in your vehicle. These amps are only sold by select dealers chosen by Kicker.
iQ500.4 control panel
- 4-channel car amplifier with digital signal processing
- 65 watts RMS x 4 at 4 ohms (125 watts RMS x 4 at 2 ohms)
- 250 watts RMS x 2 bridged at 4 ohms (4-ohm stable in bridged mode)
- CEA-2006 compliant
- variable high- and low-pass filters for front and rear channels (40-180 Hz, 24 dB/octave)
- variable KickEQ™ bass boost for front and rear channels (0-18 dB at 40 Hz)
- Panel Lock function disables onboard controls when using TWEEQ app
Digital Signal Processing:
- TWEEQ app for PC, iOS, or Android
- free download from kicker.com/tweeq
- uses USB connection from device to amp
- TWEEQ Wizard automatically sets basic tune
- select speaker type and size (sets crossovers)
- enter distance from each speaker to listening position (sets time-alignment)
- advanced tuning
- input signal routing and mixing
- variable high- and low-pass filters (10-20,000 Hz)
- selectable crossover characteristics (Butterworth, Linkwitz) and slopes (6, 12, 18, 24 dB/octave)
- variable KickEQ+™ bass boost (0-18 dB, 24-80 Hz, 0.5-10 Q)
- adjustable time delay (0-20 ms) in 0.02, 0.1, and 1.0 ms increments
- 31-band graphic equalizer (+/-12 dB/band)
- fully adjustable dynamic compressor/limiter (1:1 to 10:1 ratio)
- preamp and speaker-level inputs
- speaker wire to RCA adapter required for speaker-level input
- Auto Turn-on with speaker-level inputs (DC offset or signal-sense)
- preamp outputs
- optional IQI interface networks up to four iQ amps together for Bluetooth control and streaming music
- optional IXSK stacking kit lets you mount one IQ amp on top of another
- AFS fuse holder and 60A fuse included
- wiring and hardware not included with amplifier
- 4-gauge power and ground leads recommended
- dimensions: 9-7/16"W x 2-1/8"H x 8-1/4"D
- warranty: 3 years
- Our 60-day money-back guarantee
- MFR # 42IQ5004
What's in the box:
- 4-Channel amplifier
- AFS fuse holder with tinted lid
- 60A AFS fuse (installed in fuse holder)
- 3mm Allen wrench
- 4 Self-tapping screws (2" length)
- 4 Flat washers
- Quick Start Guide
- Notice (on fuses)
- "Proper Fusing Is Imperative" sheet
- Kicker Certified Power certificate
Kicker 42IQ500.4 reviews
Great amp never failed yet in the nearly 4 yeas and texas heat
1 of 1 found this helpful
Its a unique product three in one unit
0 of 1 found this helpful
I love this amp. This is my first Q class product from Kicker and I am very impressed. Good clean power, great looks and the TWEEQ software is the icing on the cake. Connected my laptop, spent 5 minutes entering the measurements to each speaker from my sitting position and what kind of speakers I have in each location, that's it. TEEEQ does the rest, adjust time delay for each speaker, speaker level, and sets the gain. It sounds so good after the set up. Its pushing audio frog coaxials in the door and rear pillar rated for 50-75 rms. This was a perfect match couldn't be happier. I don't know why I would use any other amp going forward other than Q class. I couldn't be happier. Thanks to Crutchfield for helping me understand that the gain was being set automatically after the TWEEQ software ran and setup was uploaded to the amp. I was unclear on that at first and was trying to set my gain manually. Keep in mind that all manual controls will be disabled when using TWEEQ. It does it all for you and the manual controls have no function at that point. Which is a good thing, I love the peace of mind knowing the amp is locked in to the perfect settings.
Pros: TWEEQ software, looks, performance
Cons: None other than the instructions are not clear at all about how the gain is set. There is no mention of the gain being set when TWEEQ is run. But it is.
7 of 7 found this helpful
I haven't had the time too get it installed yet, I have to buy another pair of GS60's and some tweeters before I can give an honest review, but You can't go wrong with Kicker.
1 of 12 found this helpful
More details on the Kicker 42IQ500.4
Features & specs
|RMS Power Output (Watts x Channels)||
65 x 4 |
|Peak Power Output (Watts x Channels)||---|
|Power at 2 Ohms (Watts x Channels)||125 x 4|
|Bridged Power (Watts x Channels)||250 x 2|
|Minimum Impedance Bridged||4|
|Minimum Impedance Unbridged||2|
|Best Frequency Response||20-20k Hz|
|THD at Rated RMS Power||1%|
|Signal to Noise Ratio||80 dB|
|Low-Pass Crossover Frequency||40-180 Hz|
|Low-Pass Slope (dB/octave)||24 dB/oct|
|High-Pass Crossover Frequency||40-180 Hz|
|High-Pass Slope (dB/octave)||24 dB/oct|
|Bass Boost||0-18 dB|
|Bass Boost Frequency||40 Hz|
|Speaker Level Inputs||RCA|
|Preamp Outputs||1 pair|
|Parts Warranty||3 Years|
|Labor Warranty||3 Years|
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.
Note: In the DC Offset and Audio modes, the amp's remote terminal acts as a +12 volt output to turn on another component.
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.
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.
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.
Note: The recommended gauge for the power and ground wires is dependent upon the length of the power wire. For runs up to 19 feet, 4 gauge wire is recommended. For wire runs of 19 feet or more, 1/0 gauge wire should be used.
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.
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