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SPECIFICATIONS
Model/Part Number
Thiele/Small Parameters
Fs (free-air resonance, Hz)
Vas (equivalent compliance, cu. ft.)
Vas (equivalent compliance, liters)
Qms (Q, mechanical)
Qes (Q, electrical)
Qts (total driver Q)
Re (DC resistance, ohms)
Z (nominal impedance, ohms)
Le (inductance, mh)
Efficiency (1W @ 1M, dB)
Xmax (one way linear excursion, in.)
Xmax (one way linear excursion, mm)
Pe (continuous power handling, watts)
Peak power handling (music, watts) *
Mms (total moving mass, grams)
Cms (mechanical compliance, mm/N)
Bl (motor strength, Tesla-M)
Sd (effective radiating area, sq. cm.)
Sd (effective radiating area, sq. in.)
Frequency range (Hz)
Energy Bandwidth Product (EBP) **
Driver Physical Dimension
Speaker Displacement (cu ft)
Speaker Outer Diameter (inches/mm)
Mounting hole diameter (inches/mm)
Mounting depth (inches/mm)
Magnet Weight (Oz)
Basket diameter (inches/mm)
Recommended Enclosures
Typical sealed enclosure (cu. ft.)
Vented enclosure (cu. ft.) ***
Port tuning frequency (Hz)
Port diameter (inside, inches)
Port square equivalent (inches)
Port length (inches)
Specifi cations are subject to change without notice
© 2008 directed electronics—all rights reserved
XTR124
23.7
2.606
73.820
6.15
0.53
0.49
7.9
8
2.87
84.5
0.476
12.075
250
500
162.76
0.278
18.90
433.736
67.255
20-250
45
0.077
277.00
10.91
5.98/152
7.24/184
64.00
12.24
1.50
1.50
40.00
4.00
3.545 x 3.545
3.545 x 3.545
11.26
XTR152
XTR154
21.4
23.0
6.141
5.618
173.960
159.140
6.93
6.53
0.61
0.73
0.56
0.66
4.2
7.9
4
1.70
2.55
86.3
86.0
0.487
0.476
12.363
12.075
300
300
600
600
272.53
259.04
0.203
0.185
14.36
18.14
779.311
779.311
120.839
120.839
20-250
20-250
35
31
0.143
0.143
345.00
345.00
13.58
13.58
7.24/184
64.00
64.00
15.12
15.12
2.00
2.00
3.00
3.00
36.00
36.00
4.00
4.00
3.545 x 3.545
5.42
5.42
4
15
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