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

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.