HELIX U 10A Ultra-compact under-seat 25cm 10" active amplified subwoofer

Bass is in the smallest hut –If mounting space in the vehicle is scarce and existing car hi-fi systems badly need the "extra kick" in the low-frequency range without great effort, the new HELIX active subwoofers U 10A and U 8A are the right choice. Driven by powerful, integrated Class AB amplifiers with 180 W RMS, the heavy-duty drivers with their rock-solid aluminum cones and heat-resistant voice coils easily transform the amplifier power into punchy bass. Thanks to comprehensive setting options like the adjustable, high-slope lowpass filter and particularly sensitive phase control, the low-frequency reproduction can be perfectly adapted to the acoustic conditions inside the vehicle. Equipped with a 2-channel high-level input with automatic turn on function as well as a 2-channel low-level RCA input a seamless integration is guaranteed. And thanks to the especially shallow cabinet design the installation will be a no-brainer, especially if space is extremely limited – these small "bass boosters" may even fit under the seats, for example.

Powerful, integrated Class AB amplifier with 180 W RMS power for punchy bass

Solid and low-resonance diecast aluminium housing for precise bass reproduction and optimum heat dissipation

Heavy-duty 10” / 250 mm chassis with extremely stable aluminum cone for the compression-free transformation of the amplifier power into sound pressure

2-channel high-level input with Auto Turn-on function as well as 2-channel low-level input

Continuously adjustable, steep-flanked lowpass filter

Particularly sensitive adjustment of the phase

Cable remote control for volume adjustment included in delivery

Especially flat housing design - ideal for space-saving under-seat mounting

Power RMS / max. 180 / 360 Watts

Woofer diameter 10" / 250 mm

Inputs 2 x RCA / Cinch

2 x Highlevel speaker input

1 x Remote In

1 x Remote control input

Input sensitivity Highlevel 1.2 - 20 Volts

RCA / Cinch 0.3 - 4 Volts

Input impedance RCA / Cinch 10 kOhms

Input impedance high level 33 Ohms

Frequency response 40 - 150 Hz

Lowpass 50 - 150 Hz adjustable

Subsonic 16 Hz / 12dB/Oct.

Phase switch 0° / 180° switchable

Phase shift 0 - 180° adjustable

Slope lowpass 24 dB/Oct.

Signal-to-noise ratio > 92 dB (A-weighted)

Distortion (THD) < 0.4 %

Operating voltage 10.5 - 16 Volts

Fuse 25 A Maxi-fuse (APX)

Additional features Diecast aluminum housing, cable remote control for volume adjustment, Auto Remote switch 

Dimensions (H x W x D) 78 x 245 x 345 mm / 

3.07 x 9.65 x 13.58"

We take great care packaging every item to ensure safe shipment to you. Our postage and courier charges not only cover the shipping cost, but also the time to pack your order, plus packaging supplies etc.  Please note - some items may incur extra shipping charges that have to be sent by courier and are too large/expensive to be sent by Royal Mail (for example headlamps, head units, speakers, lowering springs etc) to the following postcode areas, Channel Islands, BT, most IV, HS, KA-27-28, Any KW, AB30-56, FK17-99, G83, KW1-14, PA21-40, PH18-26, PH30-41, PH49-50, all ZE, IM, and any other non-mainland postcodes.