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Marine Amplifier 5-Channel JL Audio MHD900/5-24V, 24V 900W, OEM 98229

JLMHD900/5/24V

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Product Specifications and Features

The JL Audio MHD900/5-24V is a compact, high-fidelity 5-channel Class D marine amplifier designed specifically for 24V negative-ground electrical systems. It’s built as a space-saving “one-box” solution to power four full-range speaker channels plus a dedicated subwoofer channel, with marine-ready finishes and sealed control protection.

Important: Not for use in 12V systems. Confirm system voltage, speaker impedance and wiring before installation to avoid equipment damage.

Key features

24V-only operation: designed for 22–29 VDC charging systems
5-channel system design: main channels + dedicated subwoofer channel
R.I.P.S. regulated power supply for consistent output across rated load ranges
Differential-balanced RCA inputs with switchable input voltage ranges
Onboard crossovers: selectable 12 dB/oct (Butterworth) or 24 dB/oct (Linkwitz-Riley), 50–500 Hz range
Optional sub level control: compatible with JL Audio HD-RLC remote level controller (sold separately)

Verified specifications

Channels: 5
Rated power (main channels, stereo): 100W RMS x 4 @ 4Ω (22–29V); 75W RMS x 4 @ 1.5–3Ω (22–29V)
Rated power (main channels, bridged): 200W RMS x 2 @ 8Ω (22–29V); 150W RMS x 2 @ 3–6Ω (22–29V)
Rated power (subwoofer channel): 500W RMS x 1 @ 1.5–4Ω (22–29V)
Frequency response: main 12 Hz–28 kHz (+0/−1 dB); sub 12 Hz–10 kHz (+0/−1 dB)
Signal-to-noise ratio: 108 dBA (referred to rated power)
THD at rated power: 0.03% @ 4Ω per main channel; <0.05% @ 4Ω (sub), average at 1 kHz
Input sensitivity (switchable): 200 mV–2 V RMS (Low) / 800 mV–8 V RMS (High)
Recommended fuse: 30A (AFS, AGU or MaxiFuse)
Chassis dimensions (L x W x H): 10.74 x 7.85 x 1.93 in (273 x 199.5 x 49 mm), not including connectors

What’s in the box

MHD amplifier
Power input plug
Speaker connection plug(s)
Four mounting feet
2.5 mm Allen wrench and 4 mm Allen wrench
Four machine screws

OEM reference: JL Audio 98229 (model: MHD900/5-24V). Supplier: Recmar.

Before ordering, confirm specifications, ratings and fitment for your vessel’s 24V system and your speaker/subwoofer load requirements.

Shipping Information

All orders ship from the UK. Orders placed Monday–Thursday before 12:00pm are processed same day. Orders placed Friday after 12:00pm through Sunday are processed the following Monday. Processing times vary by stock location.

Out of stock items can be back-ordered with a typical 3–4 week lead time.

If an item shows "Dispatch Available Today" and you order after 2pm UK time, processing begins the next business day.

All times are in UK BST.

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