AD1212 S4


  • 12″ Single 4 ohm
  • 100W – 300W optimal power range
  • 2″ voice coil diameter
  • Designed for use in small sealed & vented enclosures.
  • Engineered in the USA.
SKU: AD1212S4 Categories: ,


The 1200 series 12″ is optimized for linear performance and versatility in small to medium size sealed and vented enclosures with mounting depth of only 4.03″.

Fs	28.94 Hz
Qms	5.391
Vas	64.830 l
Cms	0.178 mm/N
Mms	168 g
Rms	5.729 kg/s
Xmax	15 mm (One-Way)
Dia	253.9 mm
Sd	506.309 cm²
Qes	0.967
Re	3.304 Ω
Le	0.864 mH
Z	3.965 Ω
Bl	10.215 Tm
Bl²/Re	31.584 N²/W

Qts	0.820
no	0.157 %
SPL	84.096 dB
EBP	29.921

Nominal Diameter		12.0in
Overall Diameter		12.54in / 319mm
Mounting Hole Diameter		10.98in / 279mm
Motor Outer Diameter		5.73in / 146mm
Mounting Depth			4.03in / 103mm
Driver Displacement		0.06 cu ft / 1.7l

Minimum Sealed Volume		0.84 cu ft / 24l net
Minimum Vented Volume		3.46 cu ft / 98l net*

* Tune for desired response


Trunk Enclosure:

SUV enclosure:

Truck enclosure:

The above designs have been engineered for a “two tier” balance of compatibility: First, between the cabin acoustics of a sedan, hatchback and an SUV, and second, between the two available voice coil configurations, for a total of six balance points. This ensures a linear response and optimal power handling for listening purposes under most circumstances. Please visit our Enclosure Design Service page for custom designs.