SKU: 35369082157

HELIX IK S12 - 12" Subwoofer - 1 x 2 Ohm

Sale price$179.99 Regular price$199.99
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Ships within 48 hours · Estimated delivery Jul 12 - Jul 17

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Description

HELIX IK S12 - 12" Subwoofer - 1 x 2 OhmHELIX IK S12 Flat dimensions deep bass With the shallow HELIX IK S subwoofers, the realization of particularly flat and compact enclosure designs shouldnt be a problem anymore. Its extremely low installation depth opens up new installation possibilities that do not require making any acoustic compromises at all. Additionally, thanks to the use of large voice coils and its low resonant frequency, the HELIX IK S series delivers an absolutely stunning

HELIX IK S12

Flat dimensions – deep bass

With the shallow HELIX IK S subwoofers, the realization of particularly flat and compact enclosure designs shouldn’t be a problem anymore. Its extremely low installation depth opens up new installation possibilities that do not require making any acoustic compromises at all. Additionally, thanks to the use of large voice coils and its low resonant frequency, the HELIX IK S series delivers an absolutely stunning bass performance, which is in no way inferior to larger dimensioned woofers.

Smart down to the very last detail

The enormously stiff sandwich paper cone in conjunction with our heavy-duty drive system easily converts amplifier power into powerful sound pressure without any compression effects, while simultaneously demonstrating finesse when it comes to more subtle beats. A special highlight: the magnet system has a threaded hole on the back and thus allows the woofer to be fixed to the back panel of the enclosure. Since every millimeter of depth counts in flat constructions, enclosure vibrations are effectively reduced – even with thin walls.

Flexible Connection

Designed as a 1 x 2 Ohms (SVC2) or 2 x 2 Ohms (DVC2) variant, you can find the right low bass specialist for any amplifier configuration to get the maximum performance out of it.

"All inclusive" for self-made enthusiasts

In addition to the high-quality connection terminal with gold-plated screw terminals, a 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 or DSP settings in our technical data sheet.

Features

  • Chassis with particularly low installation depth – optimized for compact and shallow enclosure constructions
  • 1 x 2 Ohms single voice coil
  • Magnet system with threaded hole on the back – allows screwing to the back panel of the enclosure for stabilization and reduction of enclosure vibrations
  • Extremely stiff sandwich paper cone
  • Long-excursion rubber surround for highest mechanical rating
  • Rugged magnet cover with HELIX lettering for perfect magnet protection
  • Enclosure connection terminal, grille and gasket included in delivery

Technical data

    IK S12-SVC2 – 1 x 2 Ohms
Power handling RMS / max. P 300 / 600 Watts
Impedance  Z 1 x 2 Ω
DC resistance  Re 2.0 Ω
Resonance frequency  Fs 34 Hz
Mechanical Q factor  Qms 5.37
Electrical Q factor  Qes 0.50
Total Q factor Qts 0.46
Compliance Cms 95 μm/N
Equivalent air volume Vas 37 L
Force factor  B*I 14.1 Tm
Sensitivity  SPL 94.0 dB @ 2.83V / 1m
88.0 dB @ 1W / 1m
Cone area  Sd 523 cm²
Moving mass  Mms 229 g
Cone material   Sandwich paper cone
Mechanical resistance  Rms 9.2 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 316 mm / 12.44" 
Installation diameter ø 276.8 mm / 10.90"
Installation depth   95.5 mm / 3.76"
     
Recommended enclosure volumes    
Sealed box    
Net volume   22 L
Lower limiting frequency (-3dB)   39 Hz
Recommended DSP settings   Recommended "self-define" highpass filter with 35 Hz cut-off frequency and Q = 1.5;
additional EQ filter 75 Hz / Q = 1.5 / -3 dB
     
Vented box    
Net volume   40 L
Port diameter ø 100 mm / 3.94"
Port area   78 cm²
Port length   32 cm / 12.6"
Port tuning frequency Fb 36 Hz
Lower limiting frequency (-3dB)   37 Hz
Recommended DSP settings   Recommended "self-define" highpass filter with 36 Hz cut-off frequency and Q = 1.0;
additional EQ filter 75 Hz / Q = 0.7/ -2dB
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: 35369082157

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Jason
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★★★★★ 3
Decent Look, But Sizing and Shrinkage Are Dealbreakers
Size: Medium, Color: White
Product: U.S. Polo Assn. Men’s Classic Polo Shirt Used for: 5 and a half months Key Features: – Clean, classic polo style with a decent fit (visually) – Breathable and lightweight for casual wear – Appears durable and holds up in the wash Ratings: Quality: The shirt feels alright and seems to hold up after regular washing. That said, it shrinks noticeably, and the sizing already feels off to begin with. Rating: 4/5 Performance: It’s wearable, but nothing exceptional. The fabric is fine for casual use, but the sizing was a big issue—I usually wear a medium, and this felt like an extra small. I even passed it on to someone smaller than me and they found it tight too. Rating: 3/5 Value: It’s reasonably priced, but there are definitely more comfortable and better-fitting polo shirts out there in the same price range. Rating: 3/5 Pros: – Easy to wash and care for – Seems durable over time Cons: – Shrinks badly in the wash – Sizing runs very small and feels inconsistent Summary: The U.S. Polo Assn. Classic Polo Shirt might work if you size up significantly and don’t mind a snug fit. It looks decent and holds up to washing, but the shrinking and poor sizing really hurt the overall experience. If comfort and a reliable fit matter to you, there are better options available for a similar price. Overall Rating: 3/5 Disclaimer: This review is based on my personal experience using the product. I'm not an expert—just sharing my honest thoughts to help others make an informed decision.
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Reviewed in the United States on July 22, 2025
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Mounzer Saad
Omaha, US
★★★★★ 5
Nice shirt for the money
Size: Medium, Color: Heather Dark Gray
The shirt fits nicely. Seems to be of good quality.
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Reviewed in the United States on May 8, 2026
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Charles Myers
Draper, US
★★★★★ 5
Good product as advertised
Size: Large, Color: West Blue
Bought many of these. Look good and fit true to size for the price
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Reviewed in the United States on May 25, 2026
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DG
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★★★★★ 5
Good shirt
Size: Small, Color: Black
Very nice shirt, I usually wear medium but I had to get one size smaller. The small men size fits my collar great but the dryer might shrink it.
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Reviewed in the United States on May 5, 2026
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Steve S.
Bozeman, US
★★★★★ 4
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I too thought it was Ralph Lauren Polo but found out that it was US Polo Association. It is a bit boxy but fits well. It is a good quality shirt and a good value for the price. Runs true to size.
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