SKU: 9020463673

HELIX IK W8 - 8" Subwoofer - 1 x 2 Ohm

Sale price$111.60 Regular price$124.00
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Description

HELIX IK W8 - 8" Subwoofer - 1 x 2 OhmHELIX IK W8 Stunning bass performance out of compact dimensions With the new KW chassis, were 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

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

  • 1 x 2 Ohms single voice coil
  • 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-SVC2 – 1 x 2 Ohms
Power handling 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
Sensitivity SPL

91.0 dB @ 2.83V / 1m
85.0 dB @ 1W / 1m

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 213.5 mm / 8.40"
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
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 9020463673

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4.6 ★★★★★
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Doc
Battle Creek, US
★★★★★ 5
Great price great shoe
Size: 12, Color: Burgundy Polished Full Grain
Excellent shoe. Tried the Sebago penny loafer and the sizing was ridiculous. These J and M are sized perfectly. I’ve had them before and they wear like iron. Very comfortable right out of the box.
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Reviewed in the United States on May 23, 2026
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roger mendes
Whiting, US
★★★★★ 5
One of the best shoes
Size: 9.5, Color: Black Polished Full Grain
Outstanding. Fashionable, most comfortable and good construction. No sines of use after quite some time. Highly recommended.
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Reviewed in the United States on March 21, 2026
X
Verified Purchase
xyz
San Leandro, US
★★★★★ 4
Quality shoe but with a slight squeak.
Size: 10 Wide, Color: Burgundy Polished Full Grain
Nice shoes with the classic Penny Loafer design. Fit was better than another brand I tried. Only reason not 5 starts is disappointment due to a slight squeak at times when walking.
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Reviewed in the United States on August 11, 2025
S
Verified Purchase
Steven D
Omaha, US
★★★★★ 5
Exact item ordered, quick delivery
Size: 9.5, Color: Black Polished Full Grain
I ordered these black Cole Haan penny loafers for casual wear with jeans, khakies, and even business casual with slacks and a jacket. They've always worked perfectly for these uses. The Cole Haan version is the most versatile and still meets my sophisticated look criteria. I wear a 9 1/2 M with almost all other shoes. I have found Cole Haan to run slightly wider and slightly shorter. This fit will work with thin and no socks and a little loose in width. . I'd likely order a 10 N next time. I tend to forget this but it runs consistent with me for Cole Haan. 5 stars for the shoe and service. My bad on the slightly off fit.
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Reviewed in the United States on January 8, 2025
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Verified Purchase
Hugh62
Grantham, US
★★★★★ 1
Poor quality control - maybe outlet store leftovers
Size: 11.5, Color: Burgundy Polished Full Grain
The two shoes were not the same size. They were both labeled 11 1/2 but one shoe was larger than the other and the fit was poor. I returned the first pair and ordered a replacement. This time the shoes were close to the same size but too loose and the left one has sewing issues. I've bought Johnston & Murphy for years because of the quality. These were to replace an existing pair of burgundy penny loafers that have finally worn out (even after several heal/sole replacements). That is the expected quality. I suspect Nashville Shoe Warehouse may be handling shoes that didn't measure up for the quality; more like an outlet mall than getting the J&M quality I've come to expect. Update: went to Johnston & Murphy site to buy "direct" from the manufacturer. There were several recent reviews where the shoes were long and didn't fit properly. Genesco - please step up the manufacture / crafting of these classic shoes to the level of quality they used to have.
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Reviewed in the United States on July 21, 2025

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