Enclosure Recommendations

Optimum Sealed Volume

Internal volume: 1.2ft3 / 33.98L

Enclosure "Q": 0.90

-3dB response: 38Hz

Efficiency: 87.6dB

Maximum power handling: 400 watts

Cu. feet/liters “Q”

1.01

large sealed volume: .81

-3dB

41Hz

37Hz

17.5"

Efficiency

Optimum Vented Volume

Internal volume: 1.9ft3 / 53.8L

Tuning frequency: 30Hz

Port (D x L): 4" x 16.4"

-3dB response: 31Hz

Efficiency: 90.1dB

Maximum power handling: 300watts

Cu. feet/liters Tune to Port small vented volume: 1.6/45.3 33Hz 4” x 16” large vented volume: 2.3/65.13 28Hz 4” x 16.4”

18.5"

-3dB

35Hz

29Hz

88.4dB

87.1dB

12"

PE

400 watts

400 watts

Efficiency

90.9dB

89.5dB

16.9"

PE

300watts

350watts

Optimum Bandpass Volume

Front volume: 1.7ft3 / 48.14L

Rear volume: .7ft3 / 19.82L

Tuning frequency: 65Hz

Port (D x L): 6" x 5.5"

-3dB response: 43 - 91Hz

Efficiency: 95dB

Maximum power handling: 400w

Front

16.2"

Rear

6.63"

15" 25.08"

Front cu. ft/liters Rear cu.ft/liters Tune to

1.5 /42.48

.6 / 16.99

69Hz

Port

6” x 5.6”

-3dB Efficiency

45 – 100Hz 95.2dB

PE

400watts

1.9 / 53.8

.8 / 22.65

59Hz 6” x 1.75” 40 – 86Hz 94.3dB

400watts

*Note: Dimensions given require the use of 0.75" (19mm) board.

**Be sure to add in .068ft3 / 1.93L for driver displacement in all "Other"

Damping Material

The most common damping materials used are Dacron and Polyfill. Reclaimed fiber underlay has been discovered to be an excellent substitute especially when glued directly to the walls of the enclosure. Fiberglass may be used, but please limit usage to sealed enclosures only. When used in vented/bandpass enclosures, fiberglass fibers escaping through the port may be hazardous to your health.

SEALED ENCLOSURE

VENTED ENCLOSURE

BANDPASS (sealed chamber)

BANDPASS (vented chamber)

DACRON/POLYFILL loosely fill the enclosure line 3-5 walls line 3 walls line 1 wall (optional)

UNDERLAY

line 5 walls

line 1-3 wall

line 1-3 wall

line 1 wall (optional)

FIBERGLASS line 5 walls

Please limit the use of fiberglass to sealed enclosures only

Model

Driver description

Mounting depth, in./mm

Cutout dimensions, in./mm

Impedance

Nominal power handling

Maximum power handling (PE)

Dynamic power handling

Voice coil – size

Magnet weight

Frequency response

Resonance frequency (fs)

QTS

QMS

QES

VAS, ft./liter

X-max, in./mm

Peak to peak, in./mm

Efficiency (2.83V/1M)

Specifications

P112D

12” Subwoofer, Dual Voice Coil

5.95/151

10.9/277

4 ohms per coil

200 watts

400 watts

800 watts

2.25”, 4 layer

60 oz.

20Hz to 250Hz

21.7Hz

.423

6.288

.454

4.5/127.37

.43/11

1.4/35.6

87dB

Power Ratings

Rating the power handling of subwoofers is not a difficult task. However, understanding power ratings is often confusing. Many times the Maximum Power Ratings are viewed as the RMS power handling of the driver, when in actuality Maximum is generally the break point of the driver. This has lead Crossfire to come up with a system to rating the power necessary to drive our subwoofers. Please read the following cautiously before choosing your amplifier.

Nominal power handling

-Nominal power handling is the power rating given by Crossfire at which the subwoofer will experience minimal mechanical degradation over time when using a recommended enclosure. In other words, this is the recommended power to be used per woofer to assure long life.

Maximum power handling (PE)

-Maximum power handling is the power rating given by Crossfire at which the subwoofer could experience a high amount of mechanical degradation that may lead to possible failure over time when using a recommended enclosure. In other words, do not exceed this power level for extended periods of time.

Dynamic power handling

-Dynamic power handling is the power rating given by Crossfire for peak transients and short bursts.

Continuous playing at or above this level will cause mechanical failure and/or thermal failure. In other words, this power level should never be attained with the exceptions of approved SPL competition vehicles.

This could possibly void your warranty.