AINAVI CX-80 10-Inch Under-Seat Car Subwoofer: features and specs

The AINAVI CX-80 is a slim, powered 10-inch subwoofer meant to fit under a car seat. The amplifier is built in, so there is no separate amp to mount, and the aluminium enclosure is low enough for the space beneath a seat. It adds low-frequency bass to a car stereo that struggles with it.

Active, enclosed and slim

"Active" (or powered) means the amplifier sits inside the same housing as the driver. That simplifies a system: you connect power, a signal and a remote turn-on rather than choosing and wiring a separate amplifier. AINAVI describes the enclosure as sealed aluminium. A sealed design generally gives tight, controlled bass in a small volume.

The unit measures about 343 x 260 x 82 mm (13.5 x 10.2 x 3.2 inches) and weighs about 8 lb (3.6 kg). That depth is what lets it go under a passenger seat in many vehicles, though clearances differ from car to car.

Power: peak versus RMS

AINAVI lists 800 watts peak and 220 watts RMS. RMS is the continuous power figure and is the more useful number for comparing amplifiers; peak is the short-burst maximum. The brand says the amp uses a high-speed MOSFET power supply, which it links to faster switching and lower thermal impedance.

Controls that shape the sound

The amplifier has three main adjustments:

• Variable low-pass filter, 50Hz to 250Hz: passes only frequencies below the chosen point to the subwoofer, so it handles the lows while your speakers handle the rest.
• Variable bass boost: raises the low bass within its range.
• Gain control: matches the amplifier's input level to your head unit's output.

Inputs are low-level RCA, with high-level inputs as an option. For stereos without RCA outputs, a high-to-low level adapter is included.

Lighting and remote

The enclosure has multi-colour ambient lighting. AINAVI says it can be controlled from a phone app or a remote controller. A remote is typically also handy for adjusting bass level from the driver's seat.

What's in the box and installation

The listing says a complete wiring kit and the high-to-low adapter are included, to make installation easier. AINAVI strongly encourages professional installation for safety. Car audio wiring connects to the battery and the vehicle's electrical system, so follow the manual, fuse the power cable as instructed and consider an installer if you are unsure. AINAVI offers a one-year warranty and technical support.

Who it suits

It suits drivers who want more bass than factory speakers give, without losing boot space to a large box. It is a compact option for hatchbacks, coupes and cars where space is tight.

What to check before you buy

• Space under the seat: measure the height, width and depth available, including seat rails and wiring.
• Your stereo's outputs: check whether it has RCA outputs or needs the high-level adapter.
• Electrical load: confirm the vehicle's wiring and fuse are suitable, as the manual describes.
• Expectations: a 10-inch slim sealed unit sounds different from a large ported box.
• Installation: decide whether you will do it yourself or use a professional.

The short version

• A slim 10-inch active subwoofer with a built-in amplifier in a sealed aluminium case.
• 800W peak, 220W RMS; low-pass filter 50-250Hz, bass boost and gain.
• RCA or high-level inputs; wiring kit and adapter included.
• App and remote control for the ambient lighting.
• About 13.5 x 10.2 x 3.2 inches, 8 lb; check under-seat clearance.

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