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  • Image of a marine amplifier on a white background.

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Monoblock Marine Subwoofer Amplifier JL Audio M600/1, 600W @2Ω / 400W @4Ω, OEM 98273

JLM600/1

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£492.58 GBP
£492.58 GBP
Tax included. Shipping calculated at checkout.
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Product Specifications and Features

The JL Audio M600/1 is a genuine M-Series Class D monoblock marine subwoofer amplifier designed for efficient, high-output bass in harsh on-water environments. It delivers strong continuous power in a compact chassis and includes marine-ready finishing for long-term durability.

  • Power output (RMS, 14.4V): 600W x 1 @ 2Ω / 400W x 1 @ 4Ω (also rated 500W x 1 @ 3Ω)
  • Amplifier type: 1-channel monoblock, JL Audio NexD™ high-speed switching design (Class D)
  • Protection: JL Audio Advanced Rollback Protection helps reduce thermal shut-down events under demanding use
  • Filters: Variable low-pass crossover 50–500 Hz with selectable 12 / 24 dB slope; 30 Hz infrasonic filter for subwoofer protection
  • Connectivity: Differential-balanced RCA inputs; pass-through RCA outputs for daisy-chaining
  • Remote level: Compatible with optional JL Audio HD-RLC remote level control (sold separately)
  • Marine build: Powder-coated finish with corrosion-resistant hardware and gasketed control cover
  • Frequency response: 7 Hz – 500 Hz
  • Dimensions (W x D x H): 8.5 in x 7.09 in x 2.05 in (approx.)
  • Power wiring notes: 4 AWG power/ground recommended; manual recommends a 50A external fuse (installation dependent)

OEM references: JL Audio M600/1 / Ref 98273 (UPC/EAN: 699440982733). TMP Global SKU: JLM600/1.

Important: This amplifier is designed for 2Ω or 4Ω subwoofer loads (do not run below the minimum rated impedance). Confirm system voltage, wiring, ratings and fitment before ordering. If you need help matching a subwoofer or setting crossover points, contact our marine audio parts team.

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.

Notice: Due to ongoing conflicts impacting logistics, some deliveries or re-stocking may take a little longer than expected. We're working to get your order to you as quickly as possible.
Monoblock Marine Subwoofer Amplifier JL Audio M600/1, 600W @2Ω / 400W @4Ω, OEM 98273

£492.58 GBP

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