AudioControl SPK-8S2 Spike 8″ 4-Ohm Subwoofer

Are you a music fan who loves that low-end rumble? If so, look no further than the Spike Series Subwoofers!




AudioControl SPK-8S4 Spike

8″ 4-Ohm Subwoofer

Spike Series High Performance  Subwoofer

Are you a music aficionado who craves that deep, earth-shaking bass? Look no further than the Spike Series Subwoofers!

With over 45 years of experience in elevating car audio, AudioControl are thrilled to introduce their latest product line that will revolutionise your vehicle's sound system. Get ready to experience the ultimate in versatility and durability with AudioControl’s Spike Series Subwoofers.

These top-of-the-line subwoofers are designed to cater to all your audio needs, with a range of sizes and power ratings to choose from.

Whether you're into rock, hip-hop, or classical music, Spike will elevate your listening experience to new heights. Say goodbye to muddy bass and hello to crystal-clear, precise sound that will transport you to a live concert right in your car.

Featuring a 3-layer voice coil former, Spike Series Subwoofers can handle serious power without sacrificing quality. The fiber matrix paper cone with mica coating delivers sound so crisp and immersive, you'll feel like you're front row at a music festival. Plus, each subwoofer comes with a protective grille to ensure it stays safe and sound on all your road trips.

Don't wait any longer to upgrade your car audio experience. Load up your trunk with Spike Series Subwoofers today and crank up the volume for a journey filled with heart-pounding bass and pure listening pleasure.


AudioControl's Sonic Sommeliers Recommend the Following:

A single Spike Series 2 ohm subwoofer pairs well with the ACM-1.300 or ACX-300.1 for the conservative to moderate listener. For more provocative output, seek out the ACX-600.1.

Planning to enjoy the enthusiastic output from one of our LC-5.1300 or D-5.1300 amplifiers? The potent power delivered from the output of channel 5 is a superb match. Bon appétit!

For system designs utilising two Spike Series 2 ohm subwoofers, we recommend the LC-1.1500… Scrumptious!

Longing after even more low frequency output? Planning to include three or more Spike Series subwoofers in your system? Consult an expert at your favourite authorised AudioControl dealer - Sound Garage for more system configurations that deliver ravishing audio reproduction.

  • High Excursion Design for Ultra-Low Bass
  • Fiber Matrix Paper Cone with Mica Coating
  • 3-Layer High Temp Voice Coil Former
  • Dual Damping System for Linear Bass Reproduction
  • Dual Dust Cap System for Enclosure Compression Control
  • Efficient Heavy-Duty Motor Design
  • Removable Subwoofer Grille Included

thiele/small parameters

Nominal Impedance (Z)                2 ohms

DC Resistance (Re) ]]                    1.6 ohms

Resonance Frequency (Fs)           51.6241 Hz

Piston Area (Sd)                              0.0194 m2

Force Factor (BL)                          9.7018 T.m

Mechanical Q Factor (Qms)         5.444

Electrical Q Factor (Qes)              0.525

Total Q Factor (Qts)                       0.4788

Sensitivity 1W/M (SPL)                 83.3836

Mechanical Comp (Cms)               0.0998 mm/N

Moving Mass (Mms)                      95.2145 g

Linear Excursion (Xmax) .            8.5 mm

Volume Acoustic Comp (Vas)      5.2241 Ltr/ 0.1845 Cu ft

Reference Efficiency (NO.)           0.1314% RMS

Power (Pe)                                       350 Watts

Frequency Response                    30-500 Hz

Voice Coil Diameter                      2.0 in/50.8 mm

Displacement                                0.05 cu ft/ 1.44Ltr


in the box:

SPK-8S2, Manual, Warranty


  • Overall Dimensions: 8.425in/ 214 mm
  • Cut Out Diameter: 7.25 in/ 184 mm
  • Mounting Depth: 4.291in/ 109 mm
  • Mounting Height (w/o Grille):  0.55in / 14mm
  • Mounting Height (w/ Grille):  1.18in / 30mm
  • Motor Diameter (w/ Cover):  5.55in / 141mm

ported enclosure

  • External Dimensions:  23.00″ W × 11.50″H × 12.00″D
  • Net Internal Volume:  0.89 ft3
  • Total Internal Volume:  1.22 ft3
  • Gross External Volume:  1.84 ft3
  • Material Thickness: 0.75″
  • Tuning Frequency: 40 Hz
  • Port Area” 17.50 inch2
  • Port Inlet:  1.75″W× 10.00″H
  • Port Length:  28.00″
  • F3 (Hz):  34

sealed enclosure

  • External Dimensions: 14.50″ W × 10.00″H × 10.00″D
  • Net Internal Volume:  0.49 ft3
  • Total Internal Volume: 0.54 ft3
  • Gross External Volume: 0.84 ft3
  • Material Thickness: 0.75″
  • F3 (Hz): 69.04
  • Qtc:  0.86

*Enclosure size recommendations do not include driver and/or port displacement


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