Filter
Top Products
SPECIFICATIONS (CONT’D)
Directed Part Number 27309 27312 27314
Model Number 12.4 15.2 15.4
Thiele/Small Parameters
Fs (free-air resonance, Hz) 23.98 23.72 24.73
Vas (equivalent compliance, cu. ft. 1.847 4.01 7.23
Vas (equivalent compliance, liters) 52.33 113.68 113.68
Qms (Q, mechanical) 2.99 2.99 2.99
Qes (Q, electrical) 0.42 0.46 0.52
Qts (total driver Q) 0.37 0.40 0.44
Re (DC resistance, ohms) 7.76 4.08 7.23
Z (nominal impedance, ohms) 2 x 4 2 x 2 2 x 4
Le (inductance, mh) 3.67 2.59 3.68
Efficiency (1W @ 1M, dB) 85 88 88
Xmax (one way linear excursion, in.) 1.2 1.2 1.2
Xmax (one way linear excursion, mm) 30 30 30
Pe (continuous power handling, watts) 2000 2000 2000
Peak power handling (music, watts)** 4000 4000 4000
Mms (total moving mass, grams) 372.77 517.86 476.42
Cms (mechanical compliance, mm/N) 0.118 0.087 0.087
Bl (motor strength, Tesla-M) 32.07 26.03 32.15
Sd (effective radiating area, sq. cm.) 559.9 962.1 962.1
Sd (effective radiating area, sq. m.) 0.05599 0.09621 0.09621
Sd (effective radiating area, sq. in.) 86.78467 149.1258 149.1258
Frequency range (Hz) 24-250 24-250 24-250
Energy Bandwidth Product (EBP) 57 51 48
Driver Physical Dimension
Speaker Displacement (cu ft.) 0.30361 0.37704 0.33403
Mounting hole diameter (mm) 292 383 383
Mounting hole diameter (inches) 11.496 15.079 15.079
Mounting depth (mm) 261 294 294
Mounting depth (inches) 10.276 11.575 11.575
Magnet Weight (Oz) 445 445 445
Basket diameter (inches)
Recommended Enclosures
Typical sealed enclosure (cu. ft.) 0.9 to 1.35 1.9 to 2.5 1.9 to 2.5
Vented enclosure (cu. ft.) 2 3.5 3.5
Port tuning frequency (Hz) 35 35 35
Port diameter (inside, in.) 5 6.25 6.25
Equivalent square port (in.) 4.5x4.5 5.5x5.5 5.5x5.5
Port length (in.) 15 14.5 14.5
NOTE: Due to the high power capabilities and long excursion of these woofers, the Thiele/Small Parameters
were calculated and measured using a Klippel analyzer system.
25