M6-8TIB-Q-GwSw-8 Marine Subwoofer Enclosure

The RMS power (Root Mean Square) of this JL Audio M6-8TIB-Q-GwSw-8 marine subwoofer is 250 W.

The nominal impedance of this subwoofer is 8 ohms.

This subwoofer has an IEC 60529 IPX5 waterproof rating. This means the speaker’s front face is protected against low-pressure water jets under normal conditions.

Here are the main dimensions of the subwoofer:

Diameter (round) or side (square): 254 mm (10 inches)Mounting depth: 96.5 mm (3.8 inches)Cutout diameter: 228.6 mm (8.96 inches)

The net weight of this subwoofer is 3.4 kg (7.5 lb).

This subwoofer is designed for infinite baffle operation, using a large volume of air behind it without requiring a dedicated enclosure. For optimal performance, the compartment or area behind the mounting location must remain empty.

For a basic installation, you will need the following tools:

A saw or appropriate cutting tool for the surface materialMarine sealant (e.g., 3M™ 4200 or 5200)4.8 mm and 6.3 mm female spade connectorsPhillips-head torque screwdriverPhillips screwdriver #2Drill and drill bitsWire cuttersWire strippersCrimping pliersSpeaker wire

The minimum panel thickness for mounting is 6 mm (0.25 in) and the maximum panel thickness is 41 mm (1.625 in).

Use oxygen-free copper (OFC) speaker wire of 16 AWG (1.3 to 1.5 mm²). For longer distances or different loads, a larger wire gauge may be required. Do not use copper-clad aluminum (CCA) wire.

You must select a mounting location that protects the rear of the speaker from exposure to moisture. The rear of the speaker, including all components and connected wires, is not waterproof and must be shielded from moisture.

Yes, to avoid any interference with a magnetic compass, you must not mount the speakers closer to a compass than the specified safety distance, which is 235 cm (93 inches).

To clean your subwoofer:

Clean all residue with a damp cloth soaked in fresh water.Use a mild detergent to remove significant buildup or stains.Do not use harsh or solvent-based cleaners, and avoid high-pressure water jets as they may damage the product.

If the sound is distorted, check the following:

Ensure the source volume is not too high for the speaker and reduce it if necessary. Check that the panels surrounding the speaker are not vibrating. Verify that the source device or amplifier is correctly connected to the speaker terminals. If the speaker is connected to an amplifier, ensure the amplifier's input level matches the stereo's output level.

If no sound is coming from the speakers, check that all connections from the source device and/or amplifier are properly connected to the speaker terminals.

After extending the mounting tabs to hold the speaker in place, use a torque screwdriver to hand-tighten the screws to 1.69 N·m (1.25 lbf·ft). Using power tools to fully tighten the screws may damage the speaker.

The recommended RMS amplifier power for this subwoofer is 50 to 250 W.

If you decide to build a dedicated sealed enclosure, here are the recommended specifications (internal net volume):

Internal net volume: 56.66 L (2.00 ft³) -3 dB cutoff frequency (F3): 40.9 HzSystem resonance (Fc): 53.66 HzSystem Q at resonance (Qtc): 0.784

If you decide to build a dedicated vented enclosure, here are the recommended specifications (internal net volume):

Internal net volume: 42.5 L (1.50 ft³)
Cutoff frequency at -3 dB (F3): 29.6 Hz
Enclosure tuning frequency (Fb): 37 Hz
Vent diameter: 102 mm (4.00 inches)
Vent length: 343 mm (13.50 inches)

Several actions may void the product warranty:

Exposure of the speaker's rear face to moisture.Using power tools to fully tighten mounting screws.Damage caused by the use of aggressive or solvent-based cleaners.Exposure to water and damage to the rear of the speaker, including when speakers are mounted in a sealed enclosure with a vent exposed to the external environment.Failure to protect all terminals and connections from grounding and between each other.

Yes, using aggressive or solvent-based cleaners on the loudspeaker can cause corrosion, damage the product, and void the warranty. Similarly, high-pressure water jets can cause damage and void the warranty.