I used these for a few months before i decided to get the 555, they sound great and work great, i had them hooked up to a GT24 and then a GT28. The box has two side firing ports, and im asking 550 obo, i got it for 950 new, i'll get pictures up when photobucket works.
The subs are both duel 2 ohm, 500 RMS apeice, so 1000 RMS total, 2000 peak
Model Number HP12D2
Fs (free-air resonance, Hz) 26.15
Vas (equivalent compliance, cu. ft.) 2.095
Vas (equivalent compliance, liters) 59.33
Qms (Q, mechanical) 4.66
Qes (Q, electrical) 0.48
Qts (total driver Q) 0.44
Re (DC resistance, ohms) 6.77
Z (nominal impedance, ohms) 2.8
Le (inductance, mh) 2.57
Efficiency (1W @ 1M, dB) 85.32
Xmax (one way linear excursion, in.) 0.67
Xmax (one way linear excursion, mm) 17.19
Pe (continuous power handling, watts) 500
Peak power handling (music, watts) 1000
Mms (total moving mass, grams) 216.26
Cms (mechanical compliance, mm/N) 171.32
Bl (motor strength, Tesla-M) 22.32
Sd (effective radiating area, sq. m.) 0.05
Sd (effective radiating area, sq.in.) 76.88
Frequency range (Hz) 30-2.5k
Energy Bandwidth Product (EBP) 54.23
Model Number P12D4
Mounting hole diameter (inches) 10.95
Mounting depth (inches *) 5.25
Basket diameter (inches) 12.45
Model Number P12D4
Typical sealed enclosure (cu. ft.) 1
SPL sealed enclosure (cu. ft.) 0.7
Low Qtc sealed enclosure (cu. ft.) 2.5
Vented enclosure (cu. ft.) 2
Port tuning frequency (Hz) 40hz
Port diameter (inside, in.) 4
Equivalent square port (in.) 3.54x3.54
Port length (in.) 7.44
The subs are both duel 2 ohm, 500 RMS apeice, so 1000 RMS total, 2000 peak
Model Number HP12D2
Fs (free-air resonance, Hz) 26.15
Vas (equivalent compliance, cu. ft.) 2.095
Vas (equivalent compliance, liters) 59.33
Qms (Q, mechanical) 4.66
Qes (Q, electrical) 0.48
Qts (total driver Q) 0.44
Re (DC resistance, ohms) 6.77
Z (nominal impedance, ohms) 2.8
Le (inductance, mh) 2.57
Efficiency (1W @ 1M, dB) 85.32
Xmax (one way linear excursion, in.) 0.67
Xmax (one way linear excursion, mm) 17.19
Pe (continuous power handling, watts) 500
Peak power handling (music, watts) 1000
Mms (total moving mass, grams) 216.26
Cms (mechanical compliance, mm/N) 171.32
Bl (motor strength, Tesla-M) 22.32
Sd (effective radiating area, sq. m.) 0.05
Sd (effective radiating area, sq.in.) 76.88
Frequency range (Hz) 30-2.5k
Energy Bandwidth Product (EBP) 54.23
Model Number P12D4
Mounting hole diameter (inches) 10.95
Mounting depth (inches *) 5.25
Basket diameter (inches) 12.45
Model Number P12D4
Typical sealed enclosure (cu. ft.) 1
SPL sealed enclosure (cu. ft.) 0.7
Low Qtc sealed enclosure (cu. ft.) 2.5
Vented enclosure (cu. ft.) 2
Port tuning frequency (Hz) 40hz
Port diameter (inside, in.) 4
Equivalent square port (in.) 3.54x3.54
Port length (in.) 7.44
