MX-Series 4-Channel Marine-Grade Amplifier, 125-Watts x 4ch @ 2-Ohm or 70-Watts x 4ch @ 4-Ohm
Engineered specifically for powersports applications, the 4-channel MX500/4 amplifier employs JL's high-speed NexD™ switching design to deliver plenty of clean power, without straining charging systems. Its tiny, cast aluminum chassis is highly resistant to corrosion, with an IPX7 water-resistance rating, making it perfect for motorcycles, ATV’s or other utility vehicles.
Generating a solid 70W x 4 into 4 ohms (14.4V, 1% THD), the MX500/4 is fully bridgeable, so it can be used as a 3-channel amplifier, or as a 2-channel amplifier producing a potent 250W x 2 into 4 ohms.
Other features include independent front and rear crossovers with selectable full-range, high-pass or low-pass filter controls and a dual-range input section that accepts a wide range of input voltage levels, from line-level all the way to high-power speaker level signals.
This amplifier features a black powder-coated finish, a gasketed cover for the controls and stainless steel hardware for durability.
Specifications
Frequency Response
20 Hz - 20 kHz (+0, -1dB)
S/N Ratio, referred to highest rated power
>88 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth)
S/N Ratio, referred to 1 W
>70.5 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth)
Damping Factor @ 4 Ω
>92 / 50 Hz
Damping Factor @ 2 Ω
>43 / 50 Hz
THD+N @ Rated Power
<1% @ 2 Ω per Ch.
Input Voltage Range @ RCA Inputs
Switchable from 250 mV - 4 V RMS (Low) to 750 mV - 15 V RMS (High)
Min.Copper Power / Ground Wire Gauge
4 AWG wire
Fuse Rating
50 A (AFS, AGU or MaxiFuse™)
@ 4 Ω
70 W RMS x 4
@ 2 Ω
125 W RMS x 4
Bridged @ 4Ω
250 W RMS x 2
JL Audio MX500/4 Manual
RD-Series 5-Channel Automotive Amplifier, 70-Watts x 4ch + 500-Watt Mono @ 2-Ohm
Crafted as an all-in-one, total system solution, the RD900/5 is engineered to power a complete audio system consisting of a subwoofer + four satellite system with 900 watts of high-performance sound. Equipped with JL's exclusive NexD™ switching technology, this complete power package efficiently generates a potent 70 watts of crystal-clear audio into 4 ohms, plus a robust 500 watts for a subwoofer system, all from a single compact chassis. Each pair of main channels is also fully bridgeable, stoutly producing 200 watts of full-range audio bliss (into 4 ohms), creating an ultra-powerful 3-channel amplifier.
Conveniently located on top of the RD900/5, you’ll find a complement of studio-grade signal processing features, all hidden beneath a removable protective cover. Each pair of main channels is equipped with a 12 dB / octave high-pass filter, with a dedicated low-pass filter for its subwoofer channel. All three crossovers offer continuously variable frequency selection from 50-500 Hz, for precise filtering. Dual-range, differential-balanced inputs are also onboard, capable of accepting most input voltage levels, plus automatic turn-on capability (via signal sensing or DC-offset sensing) for maximum versatility.
LED clipping indicators are also standard equipment for each channel section. This all-new, innovative feature lets you easily set your amplifier’s input sensitivity settings, quickly and accurately, with no special equipment needed. The RD900/5 features a durable, black powder-coated finish and a top-mounted, dual-color LED light strip that reports the overall status and condition. With the addition of an RBC-1 remote level control (sold separately), you can conveniently control the subwoofer’s output remotely from the driver’s seat.
Specifications
Frequency Response (Main Channels)
12 Hz - 22 kHz (+0, -1dB)
Frequency Response (Subwoofer Channel)
10 Hz - 500 Hz (+0, -1dB)
S/N Ratio, referred to highest rated power (Main Channels)
>104 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth)
S/N Ratio, referred to 1 W
>84 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth)
Damping Factor @ 4 Ω
>150 / 50 Hz
Damping Factor @ 2 Ω
>75 / 50 Hz
THD+N @ Rated Power (Main Channels)
<1% @ 2 Ω per Ch.
THD+N @ Rated Power (Subwoofer Channels)
<1% @ 2 Ω per Ch.
Input Voltage Range @ RCA Inputs
Switchable from 200 mV - 2 V RMS (Low) to 800 mV - 8 V RMS (High)
Min.Copper Power / Ground Wire Gauge
4 AWG wire
Fuse Rating
80 A (AFS, AGU or MaxiFuse™)
Main Channels @ 4 Ω
70 W RMS x 4
Main Channels @ 2 Ω
100 W RMS x 4
Main Channels - Bridged @ 4Ω
200 W RMS x 2
Subwoofer Channel @ 4 Ω
225 W RMS x 1
Subwoofer Channel @ 3 Ω
325 W RMS x 1
Subwoofer Channel @ 2 Ω
500 W RMS x 1
Subwoofer Channel @ 1.5 Ω
N/A
JL Audio RD900/5 Manual
