Kenwood eXcelon X503-1 Subwoofer Amplifier

Kenwood X503-1 Subwoofer Amplifier

The Kenwood eXcelon X503-1 mono subwoofer amplifier is a compact powerhouse designed to deliver clean, heavy-hitting bass without hogging your trunk space. Pushing out up to 500 watts RMS at 2 ohms, this reliable Class D amplifier features Kenwood’s premium eXcelon build quality and a smart thermal management system to keep your music running cool and distortion-free. Backed by a 2-year warranty, it is an ideal, high-performance solution for anyone looking to bring tight, precise, and impactful low-end energy to their vehicle's sound system.

Output Coil with Magnetic Shield
Prevents magnetic flux from radiating from the subwoofer's coil, resulting in reduced noise and enhanced sound quality.

High Quality Capacitors
PMLCAP's (Polymer Multi-Layer Capacitors) are utilized in the LC filter circuits to decrease distortion, ensuring clear detail for a truer to life sound.

Infrasonic Filter (ISF)
When the Infrasonic Filter Switch is turned on, the amplifier cuts off the low frequencies below 25Hz, which makes the amplifier’s power supply and output devices more efficient, providing clear bass output.

Gauge-style terminals lock wire
into position with set screw for secure installation.

One-side Connection
All terminals and connections are on one side foreasier installation and a cleaner look.

Speaker Level Input Harness
Speaker Level Input Harness is included to connect to speaker wires from factory installed receivers.

Wired Level Control Included
The wired remote level control allows you to easily adjust the subwoofer volume.

Specifications

CTA-2006-D Value
Maximum Dynamic Power: 350W at 4ohms and ≤ 10% THD + N
Continuous Power Output: 300W at 4ohms and ≤ 1% THD + N
Signal to Noise: 85dBA reference 1 Watt RMS

Rated Power Output at 14.4V: A/B (4 Ohms)
SUB (4 Ohms): 300Watts RMS x 1 (4 Ohms, 20-200Hz, ≤1.0% THD)
SUB (2 Ohms): 500Watts RMS x 1 (2 Ohms, 100Hz, ≤1.0% THD)
Maximum Power Output: MAX POWER: 1000W

Technical Specifications
Signal to Noise Ratio: 100dB (Reference: Rated Power into 4Ohms at 14.4V)
Frequency Response: 20Hz- (+0dB, -3dB) SUBch (Upper Feqency is depended on Low Pass Filter)
Input Impedance: 10k ohm
Speaker Impedance: 4Ω (2Ω to 8Ω allowable)

Audio Section
Low-Pass Filter: 50Hz-200Hz, -24dB/oct
High-Pass Filter: -
Infrasonic Filter: 25Hz, -24dB
Bass Boost: Built in Bass Boost Control (40Hz, 0dB-18dB)
RCA Input Sensitivity: 0.2[V] - 5.0 [V]
Speaker Level Input Sensitivity: 4.0[V] - 12.0 [V]

Terminals
Battery & Ground: Wire Clamp Type Terminal Block(M6,Nickel Colored）,Hexagon Screw,Capable for AWG4-AWG6
Speaker Output: Wire Clamp Type Terminal Block(M4,Nickel Colored）,Hexagon Screw,Capable for AWG8-AWG16

General
Dimensions(WxHxD): (W)8-3/8” x (H)2-1/16” x (D)5-7/8”
Dimensions(WxHxD): (W) 213mm x (H) 53mm x (D) 149mm
Weight: 3.3 lbs ( 1.5kg)
Operating Voltage: 14.4V（11-16V allowable）
Current Consumption: 28 [A]