HELIX IK W8
Stunning bass performance out of compact dimensions
With the new KW chassis, we’re expanding our IMPACT subwoofer lineup, offering powerful drivers for use in very compact enclosures. Especially when it comes to the most efficient usage of available space in the vehicle regarding an individual enclosure design, these woofers create completely new installation possibilities without ever compromising the acoustic performance.

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.

Flexible connection – 2 x 2 or 1 x 2 Ohms
The chassis are available as 1 x 2 Ohms (SVC2) or 2 x 2 Ohms (DVC2) version. 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 self-made enthusiasts
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
2 x 2 Ohms dual voice coil for flexible system configuration
Extremely stiff, hand-scooped paper cone for outstanding impulse response
Double ventilated voice coil for minimum compression effects and high power handling
Long-excursion rubber surround for highest mechanical rating
Solid push terminals
Powerful magnet system for compact enclosures
Rugged magnet cover with HELIX lettering for perfect magnet protection
Grille and gasket included in delivery

Technical data

IK W8 DVC2 – 2 x 2 Ohms
Power handling RMS / max. P 300 / 600 Watts
Impedance Z 2 x 2 Ω
DC resistance Re 2 x 1.6 Ω
Resonance frequency Fs 37 Hz
Mechanical Q factor Qms 3.56
Electrical Q factor Qes 0.46
Total Q factor Qts 0.41
Compliance Cms 262 μm/N
Equivalent air volume Vas 17 L
Force factor B*I 10.7 Tm
Sensitivity SPL
89.0 dB @ 2.83V / 1m
86.0 dB @ 1W / 1m

Cone area Sd 219 cm²
Moving mass Mms 69 g
Cone material Hand-scooped paper cone
Mechanical resistance Rms 4.54 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 213.5 mm / 8.40″
Installation diameter ø 182 mm / 7.17″
Installation depth 101 mm / 3.98″

Recommended enclosure volumes
Sealed box
Net volume 8 L
Lower limiting frequency (-3dB) 50 Hz
Recommended DSP settings Recommended ″self-define″ highpass filter with 50 Hz cut-off frequency and Q = 1.5,
additional EQ filter 115 Hz / Q = 1.0 / -2.5 dB

Vented box
Net volume 8 L
Port diameter ø 60 mm / 2.36″
Port area 28 cm²
Port length 42 cm / 16.5″ (angled port)
Port tuning frequency Fb 43 Hz
Lower limiting frequency (-3dB) 45 Hz
Recommended DSP settings Recommended ″self-define″ highpass filter with 43 Hz cut-off frequency and Q = 1.5,
additional EQ filter 120 Hz / Q = 0.8 / -3.5 dB

Scope of delivery
1 x Subwoofer HELIX IK W8-DVC2
1 x Grille
1 x Gasket
1 x Data sheet