HELIX K 10W 10" 25cm Car Subwoofer dual 2 ohm 300w RMS

Do-it-yourselfers, here's your chance to create your personal sub that perfectly fits into your car!

From the technical point of view, the two drivers K 10W and K12W are absolutely identical with the subwoofers that are installed in the K series enclosure subs.

Just have a look at the Thiele/Small parameters and you will easily notice that those are designed for compact vented cabinets yet leaving plenty of "headroom" for designing your own preferred sound characteristic. If you prefer to play it safe, just choose the same net volume and port tuning frequency like our enclosure subs K 10E and K 12E for outstanding bass performance.

So what are you waiting for? Start your "tailor-made subwoofer project" right now!

Extremely stiff, hand-scooped paper cone

Double ventilated voice-coil for minimum compression effects and high power handling

Long-excursion rubber surround for highest mechanical rating

Very long linear excursion

2 x 2 Ohms dual voice coil for flexible system configuration

Solid push terminals

Powerful magnet system for compact vented enclosures

Rugged magnet cover with HELIX lettering for perfect magnet protection

Grille and gasket included in delivery

Power RMS / max. P 300 / 600 Watts

Impedance Z 2 x 2 Ω

DC resistance Re 2 x 1.6 Ω

Resonance frequency Fs 36 Hz

Mechanical Q factor Qms 4.50

Electrical Q factor Qes 0.43

Total Q factor Qts 0.39

Compliance Cms 218 μm/N

Equivalent air volume Vas 34 L

Force factor B*I 12.3 Tm

Efficiency 1 W / 1 m SPL 88.0 dB

Cone area Sd 333 cm²

Moving mass Mms 91 g

Cone material Hand-scooped paper cone

Mechanical resistance Rms 4.56 kg/s

Voice coil diameter ø 50.8 mm

Voice coil winding height 24 mm

Max. linear excursion Xmax +/- 8.0 mm

Outer diameter ø 262 mm / 10.31"

Installation diameter ø 232 mm / 9.13"

Installation depth 126 mm / 4.96"

Recommended enclosure volumes 

Sealed box 

Net volume 12 L

Lower limiting frequency (-3dB) 53 Hz

Vented box 

Net volume 19 L

Port diameter ø 70 mm / 2.76"

Port area 38 cm²

Port length 22 cm / 8.66"

Port tuning frequency Fb 43 Hz

Lower limiting frequency (-3dB) 43 Hz

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.