Kenwood eXcelon X803-5 5-Channel Class D Car Amplifier
eXcelon 5-channel Class D amplifier for four speakers and a subwoofer
$499.99
Overview
The Kenwood eXcelon X803-5 is a compact Class D 5-channel car amplifier that powers four speakers and a subwoofer from one chassis. It delivers 75 watts x 4 plus 500 watts x 1 RMS at 2 ohms, is Hi-Res Audio certified, and has variable high-pass, low-pass and bass boost controls. Speaker-level inputs, signal-sensing turn-on and a wired subwoofer level remote are included, which helps when adding it to a factory radio.
Product details
Five channels of power
The X803-5 runs four speaker channels and a subwoofer channel from one Class D amplifier. Kenwood rates it at 50 watts x 4 plus 300 watts x 1 RMS at 4 ohms, 75 watts x 4 plus 500 watts x 1 at 2 ohms, or 150 watts x 2 bridged plus 300 watts, with 1,600 watts maximum. Its CTA-2006-D rating is 50 watts x 4 plus 300 watts x 1 at 4 ohms. Frequency response reaches 20 Hz to 50 kHz, and the amp is Hi-Res Audio certified.

Tuning controls
Channels A and B each have a variable high-pass filter from 50 to 200 Hz at 12 dB per octave, and the subwoofer channel has a variable low-pass filter from 50 to 200 Hz at 24 dB per octave. A bass boost adds 0 to 18 dB at 40 Hz. Input sensitivity adjusts from 0.2 to 5.0 volts for RCA inputs and 4 to 12 volts for speaker-level inputs, and the included wired remote sets the subwoofer level from the driver’s seat.
Built for easy installs
All power, speaker and input connections sit on one side, which keeps wiring tidy. A speaker-level input harness and signal-sensing turn-on let the amp work with a factory radio that has no RCA outputs. Set-screw terminals take 4 to 6 gauge power wire and 8 to 16 gauge speaker wire, three 30 A fuses protect the circuit, and a terminal cover is included. The output coil has a magnetic shield, and PMLCAP capacitors are used. It measures 9-3/4 x 2-1/16 x 6-5/8 inches.

Key features
- eXcelon Class D 5-channel amplifier for four speakers and a subwoofer
- Rated 75 W x 4 plus 500 W x 1 RMS at 2 ohms
- CTA-2006-D compliant: 50 W x 4 plus 300 W x 1 at 4 ohms, 1% THD or less
- Hi-Res Audio certified with a 20 Hz to 50 kHz frequency response
- Variable high-pass filters on channels A and B, 50-200 Hz at 12 dB per octave
- Variable low-pass filter on the sub channel, 50-200 Hz at 24 dB per octave, with 0-18 dB bass boost
- Speaker-level input harness and signal-sensing turn-on included for factory radio upgrades
- Wired remote subwoofer level control included so you can adjust bass from the seat
- One-side connections with set-screw terminals and three 30 A fuses
Specifications
| Weight | 4.6 lbs |
|---|---|
| Dimensions | 9.75 × 6.625 × 2.0625 in |
| Channels | 5 channel |
| Brand | Kenwood |
| Series | eXcelon |
| Model | X803-5 |
| Product type | 5-channel car amplifier |
| Amplifier class | Class D |
| RMS power at 4 ohms | 50 W x 4 + 300 W x 1 |
| RMS power at 2 ohms | 75 W x 4 + 500 W x 1 |
| Bridged power | 150 W x 2 + 300 W x 1 |
| Maximum power | 1,600 W |
| CTA-2006-D rating | 50 W x 4 + 300 W x 1 at 4 ohms, 1% THD or less |
| Signal-to-noise ratio | 77 dBA (x4) / 80 dBA (x1), CTA-2006-D |
| Frequency response | 20 Hz – 50 kHz |
| Hi-Res Audio | Certified |
| High-pass filter | Channels A/B, 50-200 Hz, 12 dB/octave |
| Low-pass filter | Sub, 50-200 Hz, 24 dB/octave |
| Bass boost | 0-18 dB at 40 Hz |
| Input sensitivity | RCA 0.2-5.0 V; speaker level 4-12 V |
| Inputs | RCA and speaker level (harness included) |
| Turn-on | Remote wire or signal sensing |
| Remote level control | Wired, subwoofer (included) |
| Power wire | AWG 4-6 |
| Speaker wire | AWG 8-16 |
| Fuses | 30 A x 3 |
| Operating voltage | 14.4 V (11-16 V) |
| Current draw | 48 A |
| Speaker impedance | 4 ohms (2-8 ohms allowable) |
| Dimensions | 9-3/4 x 2-1/16 x 6-5/8 in (248 x 53 x 169 mm) |
| Weight | 4.6 lb (2.1 kg) |
Important notes
- Power and ground wiring, an inline fuse, RCA cables and speaker wire are not included.
- The amplifier draws up to 48 A; use 4 to 6 gauge power wire as Kenwood specifies.
- Speaker impedance is 4 ohms, with 2 to 8 ohms allowable.
What's in the box
- Kenwood eXcelon X803-5 amplifier
- Speaker level input cable
- Wired remote controller
- Remote cable
- Self-tapping screws 4 x 16 mm (4)
- Hexagon wrench 2.5 mm
- Hexagon wrench 4.0 mm
- Washer
- Hex nut




