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SPECIFICATIONS
Model/Part Number XTR124 XTR152 XTR154
Thiele/Small Parameters
Fs (free-air resonance, Hz) 23.7 21.4 23.0
Vas (equivalent compliance, cu. ft.) 2.606 6.141 5.618
Vas (equivalent compliance, liters) 73.820 173.960 159.140
Qms (Q, mechanical) 6.15 6.93 6.53
Qes (Q, electrical) 0.53 0.61 0.73
Qts (total driver Q) 0.49 0.56 0.66
Re (DC resistance, ohms) 7.9 4.2 7.9
Z (nominal impedance, ohms) 8 4 4
Le (inductance, mh) 2.87 1.70 2.55
Efficiency (1W @ 1M, dB) 84.5 86.3 86.0
Xmax (one way linear excursion, in.) 0.476 0.487 0.476
Xmax (one way linear excursion, mm) 12.075 12.363 12.075
Pe (continuous power handling, watts) 250 300 300
Peak power handling (music, watts) * 500 600 600
Mms (total moving mass, grams) 162.76 272.53 259.04
Cms (mechanical compliance, mm/N) 0.278 0.203 0.185
Bl (motor strength, Tesla-M) 18.90 14.36 18.14
Sd (effective radiating area, sq. cm.) 433.736 779.311 779.311
Sd (effective radiating area, sq. in.) 67.255 120.839 120.839
Frequency range (Hz) 20-250 20-250 20-250
Energy Bandwidth Product (EBP) ** 45 35 31
Driver Physical Dimension
Speaker Displacement (cu ft) 0.077 0.143 0.143
Speaker Outer Diameter (inches/mm) 277.00 345.00 345.00
Mounting hole diameter (inches/mm) 10.91 13.58 13.58
Mounting depth (inches/mm) 5.98/152 7.24/184 7.24/184
Magnet Weight (Oz) 64.00 64.00 64.00
Basket diameter (inches/mm) 12.24 15.12 15.12
Recommended Enclosures
Typical sealed enclosure (cu. ft.) 1.50 2.00 2.00
Vented enclosure (cu. ft.) *** 1.50 3.00 3.00
Port tuning frequency (Hz) 40.00 36.00 36.00
Port diameter (inside, inches) 4.00 4.00 4.00
Port square equivalent (inches) 3.545 x 3.545 3.545 x 3.545 3.545 x 3.545
Port length (inches) 11.26 5.42 5.42
Specifi cations are subject to change without notice