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Kicker 46CXA1800.1T CX Series mono subwoofer amplifier — 1,800 watts RMS x 1 at 2 ohms

Item # 20646CX18T

Do you like loud bass? Kicker's CXA1800.1T mono subwoofer amplifier can put out up to 1,800 watts RMS, so your bass...

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Do you like loud bass? Kicker's CXA1800.1T mono subwoofer amplifier can put out up to 1,800 watts RMS, so your bass...

24 questions - 37 answers

Item # 20646CX18T

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$449.96

About the Kicker 46CXA1800.1T

Buck Pomerantz

High-level bass power

Do you like loud bass? Kicker's CXA1800.1T mono subwoofer amplifier can put out up to 1,800 watts RMS, so your bass will shake the planet. The quality of the bass tone matters as much as the volume, so a variable low-pass filter helps get maximum performance from your sub/enclosure combination, while a fixed subsonic filter removes the extreme low resonances that cause distortion. A variable bass boost allows you to add some extra low-end punch if you want. An optional wired remote lets you conveniently adjust the bass level from your front seat.

High-level bass power

Do you like loud bass? Kicker's CXA1800.1T mono subwoofer amplifier can put out up to 1,800 watts RMS, so your bass will shake the planet. The quality of the bass tone matters as much as the volume, so a variable low-pass filter helps get maximum performance from your sub/enclosure combination, while a fixed subsonic filter removes the extreme low resonances that cause distortion. A variable bass boost allows you to add some extra low-end punch if you want. An optional wired remote lets you conveniently adjust the bass level from your front seat.

Hooks in almost anywhere in almost any position

This amplifier works with one-ohm loads, so you won't have to worry too much about matching impedances when you add a second or third sub to your system. Kicker's Fail-Safe Integration Technology (FIT™) keeps this amp's input free from noise or interference, so you can tap into your vehicle's speaker wiring for an input signal without a worry. A 3-second turn-on/turn-off delay eliminates system pops and other noises. The CXA1800.1T comes with hardware that lets you mount it vertically, so you can put it in a location that takes up very little floor space and looks cool too.

Installation Note: This amplifier's power consumption is beyond the capacity of most automotive electrical systems. To power this amp, your vehicle may require an electrical upgrade that could include a high-output alternator, a Big 3 wiring upgrade, and a second battery.

Kicker 46CXA1800.1

CXA1800.1T input and control panel

Subwoofer Wiring Diagrams

To see sample wiring diagrams for all common subwoofer/amplifier combinations, check out this informative article.

READ LESS

Product highlights:

  • mono subwoofer amplifier
    • 900 watts RMS x 1 at 4 ohms (1800 watts RMS x 1 at 2 ohms)
    • 1800 watts RMS +/-10% x 1 at 1 ohm
  • CTA-2006 compliant
  • Class D amp technology
  • frequency response: 25-200 Hz
  • variable low-pass filter (50-200 Hz, 12 dB/octave)
  • fixed subsonic filter (25 Hz, 24 dB/octave)
  • variable bass boost (0-6 dB at 40 Hz)
Other Features:
  • preamp inputs and outputs
  • speaker-level inputs (speaker wire to RCA adapters required)
  • optional remote bass level controller available
  • 3-second delay for turn-on and turn-off
  • includes hardware for vertical mounting
  • wiring, fuse, and hardware not included with amplifier
    • 1/0-gauge power and ground leads and a 150-amp fuse recommended
  • dimensions: 15-1/4"W x 2-3/8"H x 6-3/4"D
  • warranty: 2 years (extends to 3 years when purchased with a Kicker 1/0-gauge wiring kit)
  • MFR # 46CXA18001T

What's in the box:

  • Mono amplifier
  • 2 Vertical mounting brackets
  • 3mm Allen wrench
  • Four 3/4" Screws
  • Owner's manual
  • Power chart
  • Certified Power certificate

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Customer reviews for Kicker 46CXA1800.1T

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4.5 out of 5 stars
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More details on the Kicker 46CXA1800.1T

Mark G.

Product Research

Features

CEA-2006 Compliant: CEA-2006 is a system of testing and measurement for mobile audio amplifiers. This voluntary standard advocates a uniform method for measuring an amplifier's RMS power output. The criteria for measuring amplifier power uses a DC input voltage of 14.4 volts and the RMS power output is measured over a frequency range of 20 Hz to 20 kHz (for full range amplifiers), with 1% or less Total Harmonic Distortion plus noise (THD+N). Signal-to-Noise ratio is measured in weighted absolute decibels (dBA) at a reference of 1 watt into 4Ω. CEA-2006 standards allow consumers to compare car amplifiers and receivers under the same conditions (apples to apples).

CEA-2006 Specifications:

  • Power Output: 900 watts RMS x 1 into 4Ω
  • Signal to Noise Ratio: 70 dBA (measured at 1 watt into 4Ω)

Other Specifications:

  • Power Output:
    • 2Ω: 1800 watts RMS x 1 (14.4 volts, ≤1.0% THD+N)
    • 1Ω: 1800 watts RMS x 1 (14.4 volts, ≤1.0% THD+N)
  • Signal to Noise Ratio: 95 dB (at rated power output)

Controls:

  • Input Level: 2-position switch; select high (speaker-level) or low (line-level)
  • Input Gain Control: rotary input Gain control; continuously variable from 125mV to 5V with the input level switch set to low; 1V to 40V with the input level switch set to high
  • Crossover Frequency: continuously variable rotary dial; set the low pass crossover point between 50Hz and 200Hz; the crossover slope is 12 dB/octave
  • KickEQ Bass Boost: increase the bass level between 0dB and +6dB via the rotary control; centered at 40Hz

Subsonic Filter: The amplifier features a non-defeatable 25Hz Subsonic Filter with a 24dB/octave slope. The Subsonic Filter rolls off extremely low frequencies that can't be cleanly reproduced by the amplifier and subwoofers. This reduces distortion and helps the amp run more efficiently.

Mounting: The efficient Class-D Kicker CX Series amplifiers can be mounted vertically, if desired, with the included mounting brackets.

Auto Turn-on: The amplifier has two methods of turning on: +12V and DC Offset. The preferred method is to run an 18-gauge wire from the remote turn-on lead of the source unit to the Remote (REM) terminal on the amp. When a +12V signal is detected on the wire, the amplifier will turn on. If your source unit lacks a remote turn-on lead (a factory head unit, for example), you can choose to turn on the amplifier via the DC Offset method. When a DC offset is detected (>2.5 volts) on the speaker-level inputs, the amplifier automatically turns on.

Vehicle Integration: The CXA1800.1 amplifier features Kicker's FIT 2+ (Fail-safe Integration Technology 2 PLUS) technology, providing near-universal compatibility with stock and aftermarket radios. Start/Stop vehicle compatibility and the ability to accept factory input signals as high as 40-volts make the CXA1800.1 compatible with almost every vehicle and factory or aftermarket radio.

Wire Connections: The CXA1800.1 has set screw terminals for power, ground, and turn-on (REM). The power and ground terminals will accept up to 4-gauge wire (recommended), and the turn-on lead will accept up to 8-gauge (18-gauge recommended). The set screws are loosened/tightened with the supplied 3mm Allen wrench. The speaker outputs are slotted, screw-down terminals, which will accommodate bare wire or spade connectors. The speaker slots are 0.335" wide.

External Fuse: The amplifier does not include a built-in fuse, therefore an external fuse should be placed on the power wire, within 18" of the battery. It is recommended that a 1/0-gauge amplifier wiring kit and a 150-amp external fuse be used when installing the amplifier.

Input Signal: The CXA1800.1 accepts either high (speaker-level) or low (line-level) input signals on the RCA inputs, selectable using the input level switch on the end of the amp. When using a speaker-level input signal, add the optional Kicker KiSL speaker-level to RCA adapter. The input sensitivity is 125mV-5V (low) or 1V-40V (high).

Preamp Output: Using either a speaker-level or line-level input feeds the stereo RCA output, which passes the audio signal to another amplifier or component. This allows you to daisy-chain another amplifier without having to run RCA cables from the head unit to the second amp.

Optional Wired Remote: The optional CXARC remote bass level control can be added to remotely control the output level of the amplifier. The CXARC's control knob can be mounted near the driver's seat, and the control's cable extended to the amplifier location.

Certified Power: Each amplifier is tested when it comes off of the assembly line. Tests are run for Total Harmonic Distortion, Signal-to-Noise Ratio, Protection Circuit, and Total Power Output. A Certified Power certificate with model and serial number is included with each amp with the measured power output figure, and a pass/fail grade for the other tests.

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Customer Q&A

24 questions already asked

Q
I'm trying to find an adequate amp/amps for 4 Kicker L7T 10in Subs. They are 2000 RMS total, wired in parallel for 2 ohms. Can I run the 4 subs with just this amp the way it's supposed to or should I get 2 of the CXA 1200 amps?
danny  Mar 29, 2024
1 answer
A
Hey Danny, great question. So short answer is this Kicker amp is perfect for running four of those L7Ts. Bit longer answer to that is as long at they are four dual 4-ohm voicecoil subs, then the wiring should match down to 2-ohm by the time you are finished. Running subs to at least 70% of their total power is the goal and even though we are about 50w short per sub with the Kicker amp, we are well beyond that 70% threshold so we should be pushing those for everything we need to to get the best sound. Below I also included a wiring diagram for those L7's to get everything wired to 2-ohm: https://images.crutchfieldonline.com/ca/learningcenter/car/subwoofer_wiring/4DVC_4-ohm_mono.jpg
red  Mar 30, 2024 (Staff)
Q
Will this amp take 0 gauge wire? Or only 4 gauge?
kaden  Feb 08, 2024
1 answer
A
Greetings Kaden. Thank you for your question. This amplifiers terminals will accept up to 4 gauge power and ground wire.
hogan  Feb 08, 2024 (Staff)
Q
Would I be able to ran 3 JL 10tw3 d-4's ran in series at 2.67 ohms? Having issues with this setup at the moment where the amp is going into protection mode. I've checked all wires, ground area etc.
charles  Jun 28, 2023
1 answer
A
Greetings Charles, and thank you for your question. You should be able to. This amp is stable down to 1 ohm. Grab an ohm meter and run a test and see if you are at 2.67 ohms. If so, you might need to get in touch with technical support.
hogan  Jun 28, 2023 (Staff)
Q
Changed my setup recently as I was not happy with 2 x 10TW3's in a sealed box. Looking for something to push 2 x 12" Kicker Comp Q Class (1,700 RMS Total) but worried about all the additional electrical components to add on. Is an alternator mandatory for this Amp or can I get away with a stock alternator + battery? I have a 2019 Tundra running a stock alternator 150A.
ge  Mar 27, 2023
1 answer
A
Thanks for your question, Ge Yang! I recommend contacting one of our amazing Advisors either by phone at 1.800.324.9695 or by chat to discuss an amp that will match up with your Kicker Comp Q subs. Here's a link to a great article we have on "How to give your car's electrical system a power-up" https://www.crutchfield.com/learn/big-3-alternator.html
andrea  Mar 27, 2023 (Staff)
Q
Will this run 3 kicker comp R dvc and how would i wire to the amp?
anthony  Mar 21, 2023
1 answer
A
Greetings Anthony, and thank you for your question. For this amp you will need Comp R DVC4 ohm subwoofers. They would be wired to 2.7 ohm in that case, and this amp will do just short of 1800 watts then. When you are ready to wire up your subwoofers, you can call our tech support team for wiring information. You will have a direct tech support number to call on your shipping confirmation email from us.
hogan  Mar 22, 2023 (Staff)
Q
Will this push 3 kicker comp R with dvc?
anthony  Mar 20, 2023
1 answer
A
Greetings Anthony, and thank you for your question. What an amplifier will put out depends on what the impedance load is. 3 subwoofers would have an odd load. The amp puts out 900 watts at 4 ohms, and 1800 at 1 or 2 ohms. Three ohms would be split down the middle 1350 watts. Comp R subs are either DVC4 ohms, or DVC2 ohms How they are wired will change the load, and what the amp puts out.
hogan  Mar 21, 2023 (Staff)
Q
Thinking about buying this amp for future system expansion. I will initially run a single sub with a 1,000 watt rating (DVC 4 ohm). Once I upgrade my cars electrical I plan on adding a second 1,000 watt sub. Are there any potential issues with running the amp with the gain turned down? Once upgrades are complete I purchase the second sub and reset the gain to utilize the full power of the amp. Sound feasible?
rob  Mar 08, 2023
1 answer
A
This amplifier would do nicely with two 1000 watt RMS 4-ohm DVC subs. We would be presenting the sub with a total 1-ohm impedance, at which point the subs would receive the 1800 watt RMS we see listed. However, this amplifier will also provide 1800 watts RMS at a 2-ohm impedance, which we would be presenting to the amplifier with only one of the aforementioned subs connected. This would be 800 watts RMS more than the sub is rated to handle. This would be risky. Keep in mind that gain adjustment is not a volume/wattage limiter. It would still be possible to blow the single sub from overpowering in this instance.
zachary  Mar 09, 2023 (Staff)
Q
im preparing to run three l7 shallows (2 ohm) in my single cab would you run this amp or the 1200 without doing too much of an electrical upgrade?
louis  Feb 23, 2023
1 answer
A
Please reach out to our advisors via online chat or phone at 1-800-324-9695 for help with selecting the correct amplifier and accessories for your project. They will be able to review additional details and provide the correct products for the job.
zachary  Feb 23, 2023 (Staff)
Q
Will this amp power my 15" L7 solo Baric Q class subwoofer?
chris  Jan 27, 2023
1 answer
A
Yes. This will work to power a 15" Q-class L7.
zachary  Jan 28, 2023 (Staff)
Q
Will this run my L7 15 Q Class solo Baric and would I need a capacitor?
chris  Jan 27, 2023
1 answer
A
Greetings Chris, and thank you for your question. The Q Class L7 is rated for 1200 watts. This Kicker 46CXA1800.1 ran at 4 ohms would do 900 watts, and that would be safe for the the Dual 2 ohm L7 wired to 4 ohms. At 2 ohms the amp puts out 1800 watts. If you had the dual 4 ohm L7 and ran it at 2 ohms, I could not advise running 1800 watts to that subwoofer. You would need either a second battery, or a capacitor with this amp.
hogan  Jan 27, 2023 (Staff)
Q
I have 2 LS7, can this Amp be briged?
manuel  Oct 12, 2022
1 answer
A
You can most likely run both LS7's Manny, but you can't bridge the amp because it is a mono single channel. This amp does have 4 total speaker connection lugs, and it IS 1 ohm stable so most like it can handle both subs combined impedance. The Kicker 46CXA1800.1T is a solid choice and should bang!
bo  Oct 13, 2022 (Staff)
Q
Would this amp be sufficient for 2 mini mojo 8s wired at 1ohm?
barry  Oct 10, 2022
1 answer
A
Yep! The Mojo 8" have a 900-watt RMS power handling. Two of them could handle the 1800 watts this amp puts out at 1-ohms!
thomas  Oct 10, 2022 (Staff)
Q
I have two L5 ten inch subs wired in series so at 4ohm. Would this amp be okay to run for this set up? Also by my calculations for the gauge wire with this set up calls for 87 amps. Is a 4 Awg CCA okay for this?
joshua  Jun 17, 2022
1 answer
A
Greetings Joshua, and thank you for your questions. We are recommending a 1/0 gauge amp wire kit for that amplifier to ensure proper voltage gets to it from the battery. The L5s are rated for 450 watts each, so if you have them wired up at 4 ohms, each will get the 450 watts. The fuse rating for that amplifier is 150 amp.
hogan  Jun 17, 2022 (Staff)
Q
What wattage will this amp produce at 3 ohms?
john  Mar 31, 2022
1 answer
A
Right about 1200 watts at 3 ohms
stephanie  Apr 03, 2022
Q
Can I use my 2 Jl audio w6 subs with this amp?
dana  Mar 31, 2022
2 answers
A
Yes absolutely, the amplifier is plenty powerful enough for those subs
albert  Apr 02, 2022
A
Yes
joseph  Apr 02, 2022
Q
Would this be adequate power for 3 Kicker comp r 12 inch subs?
john  Mar 03, 2022
3 answers
A
It could but that's all your power right there being that the output is 1800 for the subs and amp
eric  Mar 06, 2022
A
I believe it would do the job well, but it really is end user preference.
travis  Mar 06, 2022
A
If they are 600w RMS each I would wire in series and send it.
jeff  Mar 05, 2022
Q
Would this be adequate power for 3 Kicker comp r 12 inch subs?
john  Mar 03, 2022
3 answers
A
You won't have any sub left this amp will absolutely destroy those subs even wired at a 4 ohm load it will destroy 12 inch q class solobaric 15s easily so it's way more than adequate it's a death sentence for those level of subs
stephanie  Apr 03, 2022
A
Assuming you have D2 subs, you'll wire each sub in series, then wire them together in parallel. To get max power from the CXA800 you'll want to run at 1ohm. Unfortunately with 3 subs, you can't get down to 1 ohm (you can get down to 1.3ohm). Those subs call for 500w RMS, they want more power than a CXA800 can give them.
cory  Mar 07, 2022
A
The CXA1800.1T should be a nice match for three of those Comp R 12's as long as they are all dual 2 Ohm subwoofers. You would need to Series/Parallel them to get a 1.34 ohm load at the amplifier to get the most out of it other wise, I would look at an amp that can do the 1800 watts rms at a 2 ohm load if your Comp R's are all dual 4 ohm since the lowest you would be able to wire them down to is 2.67 Ohms.
calvin  Mar 03, 2022
Q
Could two JL 10w3v3-4 handle this amp at 2ohm?
juan  Aug 21, 2021
3 answers
A
No you'd undoubtedly fry them way to much power wired down to 2 ohms you would be feeding the subs close to 1200 watts each continously which I believe is more than they can handle at peak, though you could run about 1/2gain and probably be ok but I still wouldn't recommend it if you wired them up to 8 ohms then hooked them up at a 4 ohm mono load it would be much safer but this amp really does throw 1800 easy. I smoked a brand new pair of kicker q class 2 ohm subs with the amp at 3/4 power so be cautious cause it's really going to produce what it claims mine puts out over 2000 wats at 14.4 volts
stephanie  Apr 03, 2022
A
Yes you be fine with 8db of overlap. To be safe.. when setting the gains. Hope this helps.
michael  Aug 21, 2021
A
The cxa. 1200.1 would be a better match for those subs. The 1800.1 would likely void the jl warranty and be overkill
travis  Aug 21, 2021
Q
Can I run 4 subwoofers with just this amp?
michael  Feb 06, 2021
1 answer
A
You absolutely can although you need to understand ohm value and how to calculate it, you definitely will want to run dual 4 ohm subwoofer and figuring out the ohm value wire the 4 dual 4 ohm subwoofers down to a 2 ohm load.
stephanie  Apr 03, 2022
Q
Can I run 4 subwoofers with just this amp?
michael  Feb 06, 2021
1 answer
A
Yes, as long as the final impedance of the 4 subwoofers when wired is at least 1 ohm. The amp puts out 1800 watts rms into 2 or 1 ohm and 900 watts @ 4 ohms. To get the most out of the amp use a 2 or 1 ohm final impedance. Each sub will receive 450 watts rms if running 4, so match your subs to that power.
kevin  Feb 07, 2021
Q
Do I really need to purchase a new battery?
hernan juarez  Jan 08, 2021
1 answer
A
High powered amplifiers often has negative effects on OEM batteries, wiring and alternators. When installing a high powered audio system, we recommend starting with the Big Three upgrade, followed by an upgraded battery, and possibly upgrading your alternator as well. How far you need to go will depend on your vehicle, your setup, and how long and hard you push your system. One of our advisors would love to go over some of this with you! https://www.crutchfield.com/support/ContactUs.aspx
thomas  Jan 21, 2021 (Staff)
Q
Do I really need to purchase a new battery?
hernan juarez  Jan 08, 2021
3 answers
A
It depends on what your cars alternator is capable of producing typically most cars alternators produce between 140 and 170 amp running a amp like this can easily deplete a single battery and stock alternator, your best bet is to add a second battery and a battery isolator so that the amp only uses power from the added battery and I definitely recommend doing the big 3 wiring upgrade this is all very basic and straightforward car audio installation work I only use optima batteries in my car one for the car and one for my amps, the isolator will swap between your amplifiers needs and your cars needs for voltage it's also good to have a led volt meter displaying your amps battery voltage these big mono kicker amps can operate near full power down to 10 volts but you never want to starve a amp for power, headlights dim due to your voltage dropping to low on a single battery setup this will eliminate that all together and the factory alternator will be able to charge both switching between them with the isolator, I personally run 2 of these amps and 2 other smaller amps on my highs I had to install a high output alternator and I installed 2 dedicated batteries and I never have any issues, I ran the single mono amp and 2 smaller 4 channel amps with just the 1 dedicated battery for a year and had no issues anything install wise you can find videos step by step on YouTube
stephanie  Apr 03, 2022
A
No, but extra battery voltage does help with the light dimming at full power
kun  Jan 08, 2021
A
You will not need a new battery, if you use your accessory switch with the engine off it could drain your battery.
anthony  Jan 08, 2021
Q
I got two Rockford T1D212 running at 2 Ohms. Is this amp to much. Or will it work good?
tony  Dec 18, 2020
3 answers
A
Those subs are rated at 1000 watts rms which stands for rated maximum strength and since your subs are 2 ohms apparently this guy has no idea of what the 122 means I'd be cautious at one point I was running the t2 15 4s and I wired them upto 8 ohms so once connected to the amp it would see a 4 ohm mono load it didn't hurt them but it could make them pop causing over excursion of the woofers id you throw the 12s 1800 watts at 1 or 2 ohms your going to fry a thousand dollars worth of subs regardless of what anyone says it's way over rated for the 12s even at 4 ohms mono its still going to push 1200 plus watts continously to both subs, I'm a t series fan myself and I'm running 2 19 inch t series with one of these amps on each sub and it's perfect but be careful with the guessers if they can't tell you specifically how to increase ohm value and your sub is rated at half of what the amp puts out rms don't believe for a minute that you can just turn down the gain and it'll be fine cause all amps produce more than rms while listening to music so ignore the guessing game though them subs are rebuildable which is great for the parking lot installers on here giving advice
stephanie  Apr 03, 2022
A
Depends on the wattage of your speakers. But generally speaking, yes. This amp holds at 1800 watts at 1 ohm or 2 ohms
bryan  Dec 19, 2020
A
I would definitely purchase this amp for your set up!!! I love mine on 4 500watt rms 12's. You won't go wrong!!
todd  Dec 18, 2020
Q
Will this power two 12"solo baric l7s?
kyle andrew  Mar 08, 2020
3 answers
A
Depends on what ohms they are and whether you are bridging them.
terry  Mar 08, 2020
A
Wire the pair down to 2 ohms and this amplifier will slam the L7s
travis  Mar 08, 2020
A
Wire the pair down to 2 ohms and this will absolutely slam some L7s
travis  Mar 08, 2020
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