JL Audio® RD Car Full-range Amplifier 4 Channel Full-range Amplifier (400 W) (RD

JL Audio® RD Car Full-range Amplifier 4 Channel Full-range Amplifier (400 W) (RD

Command your vehicle's audio soundstage and deliver continuous, audiophile-grade electrical current with the advanced high-current marine and car amplifiers of JL Audio. Packed with signature technical architectures—such as ultra-efficient Class-D engineering or highly adaptable multi-zone digital signal distributions—these state-of-the-art powerhouses feed massive clean headroom with zero system background noise.

Product Overview & Core Highlights:

JL Audio® RD Car Full-range Amplifier 4 Channel Full-range Amplifier (400 W) (RD400/4)

SLEEK, POWERFUL, PACKED WITH VALUE

12-DECIBEL/OCTAVE FILTER WITH SELECTABLE HIGH, LOW OR DEFEAT (OFF) MODES

SELECTABLE INPUT VOLTAGE: LOW (200 mV TO 2-VOLT RMS) TO HIGH (800 mV to 8-VOLT RMS)

3 TURN-ON OPTIONS: +12-VOLT REMOTE WIRE, SIGNAL SENSING OR DC OFFSET

ONBOARD LED CLIPPING INDICATOR SIMPLIFIES LEVEL SETTING

SIGNAL ROUTING FLEXIBILITY WITH SELECTABLE INPUT MODE AND TYPE

2-YEAR WARRANTY

 

CHANNELS	4
PHYSICAL DIMENSIONS (HEIGHT)	2.13" (54 mm)
PHYSICAL DIMENSIONS (DEPTH)	6.96" (177 mm)
WARRANTY	2 years

Audio
AMPLIFIER CLASS	Class D
RATED CONTINUOUS (RMS) POWER (14.4 V INPUT @ 4 OHM < 1% THD)	75 W x 4/200 x 2 (Bridged)
RATED CONTINUOUS (RMS) POWER (14.4 V INPUT @ 2 OHM < 1% THD)	100 W x 4
RATED CONTINUOUS (RMS) POWER (12.5 V INPUT @ 4 OHM < 1% THD)	60 W x 4/180 x 2 (Bridged)
RATED CONTINUOUS (RMS) POWER (12.5 V INPUT @ 2 OHM < 1% THD)	90 W x 4
SIGNAL-TO-NOISE RATIO, REFERRED TO HIGHEST RATED POWER (A-WEIGHTED, 20 HZ - 20 KHZ NOISE BANDWIDTH): ANALOG INPUTS	>104 dB
SIGNAL-TO-NOISE RATIO, REFERRED TO 1 W (A-WEIGHTED, 20 HZ - 20 KHZ NOISE BANDWIDTH): ANALOG INPUTS	>84 dB
DAMPING FACTOR @ 4 Ω	>150/50 Hz
DAMPING FACTOR @ 2 Ω	>75/50 Hz
FREQUENCY RESPONSE (+0, -1DB)	12 Hz-22 kHz
INPUT VOLTAGE RANGE @ RCA INPUTS	Switchable from 200 mV-2 V RMS (Low) to 800 mV-8 V RMS (High)
FUSE RATING	40 A
RECOMMENDED FUSE TYPE(S)	AFS, AGU or MaxiFuse™
MIN. COPPER POWER/GROUND WIRE GAUGE	4 AWG wire

Signal Processing
FILTER MODE(S): CHANNELS 1 & 2	Low-pass or High-pass
FILTER SLOPE(S): CHANNELS 1 & 2	12 dB/octave
FILTER FREQUENCY RANGE: CHANNELS 1 & 2	50 Hz-500 Hz
FILTER MODE(S): SUBWOOFER CHANNEL	Low-pass or High-pass
FILTER SLOPE(S): SUBWOOFER CHANNEL	12 dB/octave
FILTER FREQUENCY RANGE: SUBWOOFER CHANNEL	50 Hz-500 Hz

🚨 Critical Performance Specifications:

• Package Quantity Configuration: Sold Individually (Includes 1 Premium Component Unit)
• Manufacturer Part Number (MPN): 010-03109-00
• Product Category Component: Amplifiers
• Physical Hardware Sizing: 13-Inch Layout Profile
• Continuous Power Handling (RMS): 400 Watts RMS
• Nominal Circuit Resistance Stability: 4 Ohms
• Total Package Boxed Shipping Weight: 7.0 lbs