Enclosure Recommendations
Optimum Sealed Volume
Internal volume: 1.1ft3 / 31.15L
Enclosure "Q": 0.95
-3dB response: 39Hz
Efficiency: 87.6dB
Maximum power handling: 400 watts
Cu. feet/liters “Q”
1.1
large sealed volume: .85
-3dB
43Hz
37Hz
17.5"
Efficiency
88.6dB
87.1dB
11.2"
PE
400 watts
400 watts
Optimum Vented Volume
Internal volume: 1.8ft3 / 50.97L
Tuning frequency: 31Hz
Port (D x L): 4" x 16.15"
-3dB response: 32Hz
Efficiency: 90.2dB
Maximum power handling: 300watts
Cu. feet/liters large vented volume: 2.1/59.47
Tune to
28Hz
Port small vented volume: 1.5/42.48 33Hz 4” x 17.3”
4” x 17.1”
18.5"
-3dB
35Hz
30Hz
Efficiency
90.7dB
89.3dB
16.1"
PE
300watts
350watts
Optimum Bandpass Volume
Front volume: 1.7ft3 / 48.14L
Rear volume: .7ft3 / 19.82L
Tuning frequency: 63Hz
Port (D x L): 6" x 6.2"
-3dB response: 41 - 89Hz
Efficiency: 94.6dB
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
68Hz
Port
6” x 5.9”
-3dB Efficiency
44 – 101Hz 94.1dB
PE
400watts
1.9 / 53.8
.8 / 22.65
57Hz 6” x 2.1” 38 – 82Hz 93.6dB
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
P112
12” Subwoofer, Single Voice Coil
5.95/151
10.9/277
4 ohms
200 watts
400 watts
800 watts
2.25”, 4 layer
60 oz.
20Hz to 250Hz
19.8Hz
.404
6.795
.382
5.01/141.76
.42/10.75
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.
