Helix K 10W - 25cm Subwoofer

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!

Features

• 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

Specifications

• Power RMS  300 Watts
• Power max.  600 Watts
• Impedance  2 x 2 Ohm
• DC resistance  2 x 1.6 Ohm
• Resonance frequency  36 Hz
• Mechanical Q factor  4.50
• Electrical Q factor  0.43
• Total Q factor  0.39
• Compliance  218 μm/N
• Equivalent air volume  34 L
• Force factor  12.3 Tm
• Efficiency 1 W / 1 m  88.0 dB
• Cone area  333 cm²
• Moving mass  91 g
• Cone material  Hand-scooped paper cone
• Mechanical resistance  4.56 kg/s
• Voice coil diameter  50.8 mm
• Voice coil winding height  24 mm
• Max. linear excursion  +/- 8.0 mm
• Outer diameter  262 mm / 10.31"
• Installation diameter  232 mm / 9.13"
• Installation depth  126 mm / 4.96"

Delivery contents

• 1 x Subwoofer HELIX K 10W
• 1x Grille
• 1 x Gasket
• 1 x Data sheet

Recommended enclosure volumes  

Sealed box:

Net volume: 12 L
Lower limiting frequency: (-3dB) 53 Hz

Vented box:

Net volume: 19 L
Port diameter: 70 mm / 2.76"

Port area: 38 qcm
Port length: 22 cm / 8.66"
Port tuning frequency: 43 Hz
Lower limiting frequency: (-3dB) 43 Hz