Helix K 8W -SVC2, car subwoofer

The Helix K series woofer drivers work perfectly in small enclosures!

• Recommended amplifier power: 600W.
• Sensitivity 1 W / 1 m SPL 85.0 dB.
• Resistance: 1 x 2 Ω.

Helix K Series subwoofer elements work in small enclosures. Both reflex and sealed. Affordably priced with 1x2 ohm voice coil, the elements offer very good sound quality for the price in a small space.

SPECIFICATIONS

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
Even in a volume of 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
Even in 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