Rich bass out of compact dimensions

The chassis of the K subwoofer series can all be used in very compact enclosures in which they perform magnificently with exceptional bass performance. Especially when it comes to using the available space in the vehicle as good as possible due to an individual enclosure design, these woofers open up completely new possibilities for installation without making any acoustic compromises.

Clever down to the last detail

The extremely stiff cone made of hand-scooped paper fibers in connection with the heavy-duty driver system not only converts amplifier power easily and without compression effects into loads of sound pressure, but also scores sonically with subtle beats.

Maximum flexible connection – 2 x 2 or 1 x 2 Ohms

The chassis of the K-Subwoofer series are available with 1 x 2 Ohms single voice coil (SVC2) or alternatively 2 x 2 Ohms dual voice coil (DVC2). Thus, these subwoofers always offers the right solution for every amplifier configuration to get the maximum performance out of it – whether mono, 2-channel or even multi-channel amplifier.

″All inclusive″ for the do-it-yourselfer

In addition, the solid protective grille and gasket are also included.
For optimal bass performance in DIY installations you can find recommendations for sealed and vented enclosures with all parameters such as net volume, port tuning frequency as well as DSP settings in our technical data sheet.

Features
Extremely stiff, hand-scooped paper cone
Double ventilated voice coil for minimum compression effects and high power handling
Rugged magnet cover with HELIX lettering for perfect magnet protection
Long-excursion rubber surround for highest mechanical rating
1 x 2 Ohms single voice coil
Solid push terminals
Powerful magnet system for compact vented enclosures
Grille and gasket included in delivery

Power RMS / max. P 300 / 600 Watts
Impedance Z 1 x 2 Ω
DC resistance Re 1 x 2.0 Ω
Resonance frequency Fs 37 Hz
Mechanical Q factor Qms 4.01
Electrical Q factor Qes 0.49
Total Q factor Qts 0.44
Compliance Cms 190 μm/N
Equivalent air volume Vas 13.4 L
Force factor B*I 10.2 Tm
Efficiency 1 W / 1 m SPL 85.0 dB
Cone area Sd 219 cm²
Moving mass Mms 86 g
Cone material Hand-scooped paper cone
Mechanical resistance Rms 6.1 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 213 mm / 8.38″
Installation diameter ø 182 mm / 7.17″
Installation depth 101 mm / 3.98″

Recommended enclosure volumes
Sealed box
Net volume 10 L
Lower limiting frequency (-3dB) 45 Hz
Recommended DSP settings Recommended ″self-define″ highpass filter with 46 Hz cut-off frequency and Q = 1.5,
additional EQ filter 90 Hz / Q = 1.0 / -2.5 dB

Vented box
Net volume 9 L
Port diameter ø 60 mm / 2.36″
Port area 28 cm²
Port length 46 cm / 18.1″ (angled port)
Port tuning frequency Fb 38 Hz
Lower limiting frequency (-3dB) 41 Hz
Recommended DSP settings Recommended ″self-define″ highpass filter with 40 Hz cut-off frequency and Q = 1.2,
additional EQ filter 90 Hz / Q = 0.9 / -2 dB