AD2208 D4


  • 150W – 400W optimal power range
  • 2″ voice coil diameter
  • Designed for use in small vented enclosures.
  • Engineered in the USA.


The 2200 series 8″ employs a finely-tuned balance of damping and motor force to achieve high efficiency, offering exceptional versatility and performance in a variety of real-world functions:

Paired with a traditional (4th order) bass-reflex enclosure, the subwoofer’s output can be focused along a narrow bandwidth for use in sheer loudness / SPL applications. In a 6th order bass-reflex, the output can be spread along a wider frequency range, shifting emphasis onto sound quality with articulate delivery and highly controlled excursion.

Fs	44.41 Hz
Qms	5.62
Vas	6.45 l
Cms	0.11 mm/N
Mms	113.00 g
Rms	5.66 kg/s
Dia	159.99 mm
Sd	201.06 cm²
Qes	0.59
Re	7.37 Ω
Le	2.46 mH
Z	8.00 Ω
Bl	19.85 Tm
Bl²/Re	53.43 N²/W

Qts	0.53
no	0.92 %
SPL	81.80 dB
EBP	75.25

Nominal Diameter		8in
Overall Diameter		8.39 in / 213 mm
Mounting Hole Diameter		7.13 in / 181 mm
Bolt Hole Circle Diameter
Motor Outer Diameter            5.70 in / 145 mm
Mounting Depth			5.16 in / 131 mm
Required Pole Vent Clearance
Driver Displacement		0.048 cu ft / 1.37 l

Minimum Sealed Volume		N/A
Minimum Vented Volume		0.42 cu ft / 12 l net*

* Tune for desired response



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.