HST-12 mkII 12″ Subwoofer



Flat $5 shipping in the lower 48 contiguous United States.

Please specify Dual 1 Ohm or Dual 2 Ohm coil configuration in the notes section when you order.

To use a credit/debit card to place your order please call us during normal business hours at 731-439-9629.

These subwoofers are hand-built in North Carolina.

Build time can be up to fourteen business days after your order is placed.



The HST-12 mkII is a subwoofer capable of playing effortlessly from 90 Hz down into the subsonic region in a very small 0.6 ft^3 sealed cabinet. With 38mm of one way linear excursion and 50mm of peak one-way travel this subwoofer has the stroke to keep up with deep bass demands. The HST-12 mkII uses the same motor as our massive HS-24 mkII uses with the same two aluminum shorting rings with an additional item which eliminates eddy currents and controls and linearizes inductance for improved transient performance. The voice coil of the HST-12 mkII uses four layers of flat aluminum wire wound on a black anodized aluminum former. Assisting voice coil cooling are six aluminum pillars which separate the basket from the frame and allow air to move around the OD of the coil.


  • Cutout: 281.8mm (11.09 inches)
  • Outer Diameter: 322mm (12.67 inches)
  • Mounting depth: 292mm (11.5 inches)
  • Mounting flange to top of surround: 42mm (1.6 inches)
  • Driver displacement: 0.45 ft^3
  • Sealed enclosure size: 0.60 ft^3
HST12mkII Dual 2 ohm voice coils
Re 3.11 ohms
Fs 19 Hz
Qes 0.37
Qms 6.08
Qts 0.35
Le 2.8 mH
Sd 467 cm^2
Vas 39.5 L
BL 22.9
Mms 623 g
Sensitivity (2.83V/1M) 83.7 dB
Xmax (1-way) 38 mm
Xmech (1-way) 50 mm
RMS Power 2000 watts