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SPECIFICATIONS
Directed Part Number 27302 27304 27307
Model Number 10.2 10.4 12.2
Thiele/Small Parameters
Fs (free-air resonance, Hz) 30.78 32.49 22.56
Vas (equivalent compliance, cu. ft. 0.564 0.564 1.847
Vas (equivalent compliance, liters) 15.98 15.98 52.33
Qms (Q, mechanical) 3.63 3.63 2.99
Qes (Q, electrical) 0.42 0.46 0.36
Qts (total driver Q) 0.38 0.41 0.32
Re (DC resistance, ohms) 3.93 7.57 4.07
Z (nominal impedance, ohms) 2 x 2 2 x 4 2 x 2
Le (inductance, mh) 1.93 2.93 2.61
Efficiency (1W @ 1M, dB) 83 83 85
Xmax (one way linear excursion, in.) 1.0 1.0 1.2
Xmax (one way linear excursion, mm) 25 25 30
Pe (continuous power handling, watts) 1500 1500 2000
Peak power handling (music, watts)** 3000 3000 4000
Mms (total moving mass, grams) 261.93 235.64 421.18
Cms (mechanical compliance, mm/N) 0.102 0.102 0.118
Bl (motor strength, Tesla-M) 21.81 28.05 25.85
Sd (effective radiating area, sq. cm.) 333.3 333.3 559.9
Sd (effective radiating area, sq. m.) 0.03333 0.03333 0.05599
Sd (effective radiating area, sq. in.) 51.6616 51.6616 86.78467
Frequency range (Hz) 31-250 32-250 23-250
Energy Bandwidth Product (EBP) 74 70 62
Driver Physical Dimension
Speaker Displacement (cu ft.) 0.1268 0.15382 0.28931
Mounting hole diameter (mm) 238 238 292
Mounting hole diameter (inches) 9.37 9.37 11.496
Mounting depth (mm) 214 214 261
Mounting depth (inches) 8.425 8.425 10.276
Magnet Weight (Oz) 263.7 263.7 445
Basket diameter (inches)
Recommended Enclosures
Typical sealed enclosure (cu. ft.) 0.5 to 0.8 0.5 to 0.8 0.9 to 1.35
Vented enclosure (cu. ft.) 1.2 1.2 2
Port tuning frequency (Hz) 38 38 38
Port diameter (inside, in.) 3.4 3.4 5
Equivalent square port (in.) 3x3 3x3 4.5x4.5
Port length (in.) 12 12 15
Enclosure Details
1. Parameters listed are for conventional applications only, for further help please call Tech Audio Support
2. 1" MDF is recommended.
3. Recommended enclosures are NET Box Volumes, speaker and port displacement are calculated into the
volume of the enclosure, you will not need to add these volumes to calculate GROSS volume for the
enclosure.
*** Sub-sonic filters should always be used and adjusted specifically for vented box designs.
NOTE: The woofer must face up or down only, especially in sealed enclosures.
Specifications subject to change without notice
© 2007 Directed Electronics, Inc. Vista, CA 92081 All rights reserved.
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