MTX Audio TX8 Series 12 Inch Subwoofer 1800 Watt RMS

Availability: Please contact Garage Audio to confirm current stock and collection timing. Online stock quantities are not a live supplier-stock confirmation.

MTX Audio TX812 TX8 Series 12" Subwoofer – 1800W RMS (2Ω) – Built to Play LOUD & CLEAR

If you want serious bass output but you still care about control and sound quality, the MTX TX812 is a weapon. Think of it as the “little brother” to the MTX RFL platform — same brutal build approach — but with a focus on clean, detailed bass you can run hard all day.

TX8 isn’t just a subwoofer… it’s a bass engine. With a huge motor, oversized 3" voice coil and a heavy-duty suspension, the TX812 is designed to stay composed when the volume knob is doing the wrong thing.

Why the TX812 Hits Different

• 1800W RMS power handling (built for real-world high power systems)
• Oversized 3" (75mm) high-temp USA copper voice coil for control + durability
• Dual cooling system helps keep the coil stable when you’re leaning on it
• Massive 13kg magnet structure with 25mm thick plates for a strong, linear motor
• Dual spider suspension for better cone control at high excursion
• Glass fibre cone with stitched cone-to-surround for strength
• Heavy reinforced die-cast aluminium frame (no flex, no drama)
• High output efficiency (90dB sensitivity) so it still moves even if you’re slightly under power

BBR Rating (Bass Output Potential)

MTX rates the TX8 series at BBR 85V. For comparison, the well-known MTX T9500 (T9515) was rated at BBR 45V — meaning the TX8 platform is designed for almost twice the bass power potential compared to the original T9500 series.

Specifications

• Size: 12" (Ø30cm)
• RMS Power: 1800W
• Max Power: 5400W
• Impedance: 2Ω
• BBR: 85V
• Frequency Response: 26Hz – 500Hz
• Sensitivity: 90.0 dB (2.83v/1m)
• Fs: 35Hz
• Qms / Qes / Qts: 5.12 / 0.46 / 0.42
• Vas: 24.6L
• Mms: 288.8g
• Cms: 0.070mm/N
• BL: 18 N/A
• Sd: 497.4cm²
• Vd: 0.62L
• Xmax: 12.5mm
• Weight: 20kg

Good To Know

• This is a 2Ω subwoofer — make sure your amplifier is stable at the load you’re planning.
• Want it to sound tight AND hit hard? Box design and tuning matter — if you’re unsure, message us and we’ll point you in the right direction.

Need a full bass package? Tell us your vehicle + amp model and we’ll recommend the right enclosure size/tuning and wiring so it performs properly.