All orders are shipped from the UK. All orders placed before 12:00pm Monday to Thursday will be processed the same day.
Orders placed after 12:00pm Friday and before 12:00pm Sunday will be processed on Monday. Process time can vary depending on location of stock.
If a product is "Out Of Stock", you can still purchase on back order but there will be an average 3-4 week lead time to receive it
*All times stated are relevant to London Time*
Product Details
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.
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