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Kicker 11ZX2500.1

Mono subwoofer amplifier — 2500 watts RMS x 1 at 2 ohms

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  • Kicker 11ZX2500.1

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Item #: 2061ZX25K1
 
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Original price $999.99
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Our take on the Kicker 11ZX2500.1

by Buck Pomerantz
Kicker

My system has plenty of power. Who needs an amp?

You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.

Caution: big bass ahead

This Kicker ZX2500.1 mono subwoofer amplifier will pump your bass up to competition level with up to 2500 watts RMS. This reliable war horse of a sub amp will remain cool even when pushed hard, due to its tough internal components and the efficient Class-D amp technology it uses to boost your bass.

Works with almost any stereo

Kicker employs their Fail-Safe Integration Technology (FIT™) to reject noise and stop any interference generated by your car's electronics, so you'll enjoy your music clean and pure. Speaker-level inputs make it simpler to hook this amp up to a factory radio.

Bass controls

You can tune for almost any enclosure and bass driver with the steeply-sloped subsonic and low-pass filters. A bass boost gives you even more kick, when you're in the mood. A wired remote level controller is included so you can crank up the level of fun from the front seat.

See more info on this item

Highlights:

  • mono subwoofer amplifier
  • 1250 watts RMS x 1 at 4 ohms (2,500 watts RMS x 1 at 2 ohms)
  • CEA-2006 compliant
  • variable low-pass filter (50-200 Hz, 24 dB/octave)
  • fixed subsonic filter (25 Hz, 24 dB/octave)
  • variable bass boost (0-18 dB at 40 Hz)
  • Class D amp technology
  • Fail-Safe Integration Technology eliminates noise from your vehicle's electrical system
  • preamp and speaker-level inputs (speaker-level input requires an optional adapter)
  • preamp outputs
  • wired remote sub level control included
  • 1/0-gauge power and ground leads and a 300-amp fuse recommended — wiring and hardware not included with amplifier
  • no onboard fuses — when installing multiple amps in a system, an additional 300-amp in-line fuse between the distribution block and the amplifier is recommended
  • 27-1/2"W x 2-1/8"H x 9-5/8"D
  • warranty: 2 years (extends to 3 years when purchased with a Kicker 09PKD1 or PKD1 wiring kit)
  • Our 60-day money-back guarantee

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
Performance
RMS Power Output (Watts x Channels)
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1250 x 1
Peak Power Output (Watts x Channels)
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N/A
Power at 2 Ohms (Watts x Channels)
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2500 x 1
Bridged Power (Watts x Channels)
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N/A
Minimum Impedance Bridged
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N/A
Minimum Impedance Unbridged
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2
Best Frequency Response
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25-200 Hz
THD at Rated RMS Power
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1%
Signal to Noise Ratio
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65 dB
Input Voltage
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14.4v
Features
Amplifier Class
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D
Low-Pass Crossover Frequency
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50-200 Hz
Low-Pass Slope (dB/octave)
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24 dB/octave
High-Pass Crossover Frequency
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N/A
High-Pass Slope (dB/octave)
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N/A
Bass Boost
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0-18 dB
Bass Boost Frequency
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40 Hz
Fan Cooled
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No
Fuse Rating
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300
Speaker Level Inputs
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RCA
Preamp Outputs
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1 pair
Width (inches)
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27-1/2
Height (inches)
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2-1/8
Depth (inches)
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9-5/8
Parts Warranty
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2 Years
Labor Warranty
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2 Years
Product Research
What's in the box?

Download owner's manual

  • Mono subwoofer amplifier
  • ZXRC Wired remote control
  • ZXRC cable with RJ-14 plugs on both ends
  • Owner's manual (English/ Spanish/ German/ French)

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Controls
Connections

Controls

Gain: The rotary gain control is continuously variable from 125 mV to 5 V when the Input Sensitivity switch is set to Low and 250 mV to 10 V when the Input Sensitivity switch is set to High.

Crossovers: The crossover is always engaged (cannot be bypassed). The crossover point is continuously variable from 50 to 200 Hz and the slope is 24dB per octave.

Auto Turn-on Switch: The amp offers three automatic turn-on modes; select from:

  • +12V: connect a 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: turns the amp on when a 6-volt DC offset is detected at the high-level speaker inputs when the source unit is turned on
  • Audio: detects the incoming audio signal from your source unit and automatically turns the amp on; will not work if the input gain control is not set properly

Bass Boost: The bass boost circuit provides up to 18dB boost at 40Hz.

ZXRC Remote Bass Control: The bass output level can be controlled remotely using the included wired remote bass control.

Connections

Left Side of Amplifier:

  • Speaker Outputs: one pair of set screw terminals
  • +12V (power): set screw terminal
  • REM (remote turn-on): set screw terminal
  • GND (ground): set screw terminal
Note: The Amplifier is not equipped with an internal fuse. An external 300-amp fuse (not included) must be installed on the power wire. If the system has only this amp and a wiring kit is used that includes a fuse with a value other than 300-amps, the original should be replaced with a 300-amp fuse.

Right Side of Amplifier:

  • RCA Input: one pair of stereo RCA input jacks; also used for speaker level input (item number 20609ZiSL needed, sold separately)
  • RCA Output: one pair of stereo RCA output jacks

Amp Wiring Kit: Kicker recommends using a 1/0-gauge wiring kit with this amplifier.

 
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For a more in-depth review and enhanced detailed information on the Kicker 11ZX2500.1, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_2061ZX25K1/Kicker-11ZX2500-1.html ).