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Kenwood Excelon XR900-5

5-channel car amplifier — 60 watts RMS x 4 at 4 ohms + 600 watts RMS x 1 at 2 ohms (New Stock)

34 Reviews | 6 questions - 19 answers

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Our take on the Kenwood Excelon XR900-5

Car amps have come a long way. Kenwood's Excelon XR900-5 car amplifier can power your entire audio system while taking up an astonishingly small amount of space — it's about the size of a piece of computer paper, and it stands only 2" tall. But this compact 5-channel workhorse will send 60 watts RMS to each of your front and rear speakers, along with up to 600 watts RMS to your subs. You could also use the XR900-5 in 3-channel mode to drive a pair of high-performance speakers or components with 150 watts RMS each, while still feeding 600 watts RMS to your sub.

Super-slim profile, big-time power

Car amps have come a long way. Kenwood's Excelon XR900-5 car amplifier can power your entire audio system while taking up an astonishingly small amount of space — it's about the size of a piece of computer paper, and it stands only 2" tall. But this compact 5-channel workhorse will send 60 watts RMS to each of your front and rear speakers, along with up to 600 watts RMS to your subs. You could also use the XR900-5 in 3-channel mode to drive a pair of high-performance speakers or components with 150 watts RMS each, while still feeding 600 watts RMS to your sub.

Designed for optimum efficiency

Kenwood packed this amp with space-saving features. Class D technology reduces the size of the power supply, while the internal heatsink is tilted to reduce height without compromising the amp's cooling system. Recessed power and speaker wire terminals help to further reduce the amp's footprint, protect the connections, and give your installation a neat, professional look.

Controls for the best sound

You can contour the sound with high- and low-pass filters so your full-range speakers play efficiently and sound their best. The front and rear channels have separate gain and filter controls so you can adjust for different types of speakers. The subwoofer channel features its own low-pass filter that'll send the correct frequencies to your sub and enclosure, with an adjustable bass boost that adds some low-end punch when you want it.

Love this amp!

Ronnie, TX

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What's in the Box:

  • 5-Channel amplifier
  • Three 40-amp ATO fuses (installed)
  • 4mm Allen wrench
  • 2.5mm Allen wrench
  • 2mm Allen wrench
  • Four 5/8" Self-tapping screws
  • Instruction manual (English/ French/ Spanish)
  • Warranty card

Product Highlights:

  • 5-channel amplifier
  • 60 watts RMS x 4 + 400 watts RMS x 1 at 4 ohms
  • 75 watts RMS x 4 + 600 watts RMS x 1 at 2 ohms
  • 150 watts RMS x 2 bridged at 4 ohms + 600 watts RMS at 2 ohms
  • CEA-2006 compliant
  • variable high- and low-pass filters on front and rear channels (50-200 Hz, 12 dB/octave)
  • variable low-pass filter on subwoofer channel (50-200 Hz, 24 dB/octave)
  • Class-D amplifier design
  • cooling fan
  • frequency response: 20-20k Hz
  • preamp inputs
  • fuse rating: 40A x 3
  • 4-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 10-1/4"W x 2"H x 8"D
  • warranty: 2 years
  • Our 60-day money-back guarantee

Kenwood Excelon XR900-5 Reviews

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(34 Reviews)
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Hands-on research

Product Research


CEA-2006 Compliant: CEA-2006 is a system of testing and measurement methods for mobile audio amplifiers. This voluntary standard advocates a uniform method for measuring an amplifier's RMS power output and signal-to-noise ratio. The criteria for measuring power uses a DC input voltage of 14.4 volts and the RMS power output is measured into a 4-ohm load, with 1% or less Total Harmonic Distortion plus noise (THD+N), and over a frequency range of 20 Hz to 20 kHz, when applicable. Signal-to-Noise ratio is measured in weighted absolute decibels (dBA) at a reference of 1 watt into 4 ohms. CEA-2006 allows consumers to compare car amplifiers and receivers on an equal basis. Using CEA-2006 criteria, the Kenwood XR900-5 is rated at 60 watts RMS x 4 plus 400 watts RMS x 1 (subwoofer) with a 78 dBA signal to noise ratio.

Specifications: The manual also lists these non CEA-2006 compliant specifications:

  • Power:
    • Full Range: 75 watts x 4-channels (into 2Ω at 1 kHz, with no more than 1% THD, 14.4 volts)
    • Subwoofer: 600 watts x 1-channel (into 2Ω at 100 Hz, with no more than 1% THD, 14.4 volts)
  • Signal to Noise Ratio: 100 dB (at rated power)

Class D Amplifier Design: The amplifier design is Class D, which uses digital switching power supplies. The result is much higher efficiency (less heat generated) than Class AB.

5-Channel Design: The XR900-5 is made up of three sections, two full range stereo amps (labeled A and B, typically used to power front and rear speakers) and a subwoofer amp (1-channel). The front and rear amps are independently bridgeable, meaning the XR900-5 can be used as a 5-channel, 4-channel, or 3-channel amp. The minimum impedance for each section is 2Ω, 4Ω when bridged.

Crossovers: The front, rear, and subwoofer amplifier sections have independent crossover controls. The front and rear crossovers can be set to high-pass or turned off (full range). The subwoofer crossover is low-pass only and cannot be bypassed. The crossover point for each is continuously variable from 50 to 200 Hz. The high-pass crossover slope is 12dB per octave and the low-pass crossover slope is 24dB per octave.

Bass Boost: The bass boost circuit for the subwoofer section is centered at 40 Hz; boost is variable from 0 to +18 dB.

Aluminum Heat Sink: The aluminum heat sink increases the amplifier's heat dissipation efficiency, increasing the life of the amplifier.


  • Input Sensitivity: 200mV-5V; front, rear, and sub independently adjustable
  • Crossover: the front, rear, and subwoofer channels have independent controls for these crossover functions:
    • Mode: the front and rear crossovers can be set to high-pass or off (full range)
    • Frequency: each section is continuously variable; 50-200 Hz
  • Bass Boost: 0-18 dB; continuously variable (subwoofer section only)

Inputs and Outputs:

  • Signal Input: three pair of RCA preamp inputs; front, rear, and subwoofer (labeled A, B, and Sub)
  • Power: set screw terminal; accommodates bare wire up to 4-gauge
  • Ground: set screw terminal; accommodates bare wire up to 4-gauge
  • Remote Turn-on: set screw terminal; accommodates bare wire up to 10-gauge
  • Speaker Output: five pair of set screw terminals (left and right A channels, left and right B channels, and sub); accommodate bare wire up to 10-gauge
  • Fuses: three 40 amp ATO fuses

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Staff Reviews

Product reviews from the Crutchfield Labs

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Customer Q&A

Crutchfield asked  
Why did you buy this?

This amp is incredible. I bought it because it produced the power I need at a price better than comparable competitors and has great reviews [ Quillian  Oct 12, 2016 ]
Exactly what I needed and wanted. Small size, big power [ LOGAN  Sep 27, 2016 ]
I wanted an amp with more than average power to supply for a Type R Alpine subwoofer and 2 Focal component speakers. I think this amp will do some justice to these speakers. [ EDGAR  May 14, 2017 ]
price [ Albert  Dec 26, 2016 ]
The trust in the brand [ John  Dec 11, 2016 ]
used one before [ DENNIS  Dec 09, 2016 ]
Best option for the price. [ Michael  Feb 08, 2016 ]
I have a small car and this is a very powerful amp for its size that won't take up very much room! Very Excited, customer service was amazing! More knowledge than I could have imagined. [ Demitri  Dec 22, 2015 ]

6 questions already asked

MY excel on amp is mounted upside down [ Jeff  May 12, 2017 ]
As long as your not blocking the ventilation fan you can mount it and any orientation you want [ MICHAEL K  May 12, 2017 ]
Not sure, I mounted it to the side of the sub box (drivers) with the connection facing the floorboard. So, I assume it can. Ours is sitting vertically right now. Works great for last 2 years. [ Dirk  May 12, 2017 ]
No, the sound will fall out. Or you can! Mine is mounted on its side a bit. The amp is super sturdy! [ Christopher  May 12, 2017 ]
You'll need a voltmeter to measure the output from the amplifier. Start at zero gain on the amplifier and connect the voltmeter. As you turn up the gain on the amplifier the voltage output should increase, which will be indicated the display on your voltmeter. I hope this helps! [ christopher  Oct 10, 2016 ]
I used a multi-meter to set each pair's settings. I downloaded test tones of 50 Hz and 1000 Hz recorded at 0dB and by using one of Ohm's Law's formulas, finding voltage given watts and resistance. That is, voltage is the square root of watts multiplied by ohms, or V = sq.rt (W x R). The 1000 Hz tone is played for sets A and B, 50 Hz for the subwoofer set. Assuming 2 ohms across all channels, sets A and B will come out to 12.25 volts and subwoofer set will be 34.64 volts. At 4 ohms across all channels, it's 17.32 volts for A and B, and 49 volts for the sub set. It might sound like a lot, but that's at the maximum un-distorted volume from your head unit. On my setup, all my gains are at the 0.5 setting and have been that way for 2 years. My setup includes Kenwood Excelon x-798 stereo, 2 pairs of Infinity Kappa 62.11i, Kicker 40DCWS102 subwoofer. RMS watts matching all across and everything at 2 ohms. [ Mark David  Oct 07, 2016 ]
If I remember correctly I was told I needed a 125 amp fuse by customer service. I had trouble finding one and after talking to some people I knew with install experience they claimed a 100 amp breaker would be fine. Well 6 months later the 100 amp breaker is just fine. Hope this helps! [ William  May 07, 2016 ]
You run the front and rears off the front and rear channel , that will give you 70w x 4 @ 4ohms. The sub channel is separate and you just need to hook up the sub to that channel and w @ 2 ohm sub it will pull 600w. It's pretty simple make sure you set your crossovers. And rember you won't get all the power unless u turn the gains all the way up. You should set your gains at .5 for and your crossovers at 80hz. That's how mine is set runnig 2 jl separates in the front )6 1/2 , and jl audio 5 1/4 and 2 jl audio 10w 0 in a sealed box w the whoLe car dynamated [ JAMES  Apr 22, 2016 ]
As far as I understand your set up should be a direct connect. Your speakers match the specified resistance ratings of the amplifier exactly. Same set up I have. [ chris  Apr 21, 2016 ]
I have no idea...sorry. BUT the amp works good for what I want and that is to drive down the highway in my truck with the windows down and still hear the music. [ Randy  Apr 06, 2016 ]
Yes, I bought this amp for a JL audio 10' Sub its very powerful. [ Ravesta  Apr 05, 2016 ]
Yes it can. I have a JL Audio TW3 10' it's sounds awesome! [ Alejandro  Apr 05, 2016 ]
Yes it can run a single sub at 4 ohms,,and DVC would have to be dual 2ohm or dual 8 ohm. You need to have the single sub out from the amp at 4 ohm [ MICHAEL K  Apr 05, 2016 ]
Yes. If I remember the installation correctly I did this on my son's Porsche install with 4 Ohm subs in the doors wired in parallel for 2 ohm to the sub channel output, and 4 ohm speakers for the LR and Rear speakers. The channel gain controls allows level matching on the channels. As long as the amp is capable and stable at the lowest load ( 2Ohm in this case) the other channels are fine at higher impedance. [ Carl  Feb 07, 2016 ]
Yes [ TEDD  Feb 07, 2016 ]
That's how mine has been wired for 6 months now. Works great [ chris  Feb 06, 2016 ]
I have my four speakers at 4 ohms (just wire each speaker individually to the speaker outputs on the amp) to get the subs at 2 ohms there is a wiring diagram here on the website that will help with that. But yes 4 ohms to the mains and 2 ohms to the subs is possible. And the power is great. I am pushing two ten inch subs and the sound is clean and the subs hit hard. [ William  Feb 05, 2016 ]
Yes you can that is how I have mine set up but keep in mind you must keep it ventilated if you plan on doing any major thrashing it will Thermal lock and shut down on you after long periods of time great app it works well for me [ MICHAEL K  Feb 05, 2016 ]
Yes, I had this in my 2013 Ram running 2ohms to my front 4 speakers, 4ohms to the rear door speakers and 2ohms on the sub without any problems. It's a very versatile and dependable amp. [ Jonathan  Feb 05, 2016 ]