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)
Efficiency (2.86V @ 1M, dB)
Xmax (one way linear excursion, in.)
Xmax (one way linear excursion, mm)
RMS Power Watts
Nominal Power Watts
MAX Music Power 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)
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)
Specifications are subject to change without notice
© 2012 MD Audio Engineering all rights reserved
XTRPRO124D
XTRPRO152D
34.9
1.346
38.123
11.337
0.433
0.417
6.8
8
3.723
89.3
89.3
0.528
13.4
1250
2500
5000
223.823
0.093
28.453
539.13
83.565
32 - 1kHz
28 - 1kHz
81
0
1 .
6
7
4
13.35 /
339
16.61 /
7.70 /
196
9.59 /
176
1.5
1.5
40
4
3.545x3.545
3.545x3.545
11.26
XTRPRO154D
29.1
31.6
3.249
2.589
92.002
73.308
11.35
9.271
0.399
0.471
0.385
0.448
3.4
4
2.449
3.752
90.9
90.5
93.9
90.5
0.528
0.528
13.4
13.4
1800
1800
3600
3600
7200
7200
352.038
375.719
0.085
0.067
24.56
33.512
876.16
876.16
135.805
135.805
28 - 1kHz
73
0.2703
0
2 .
422
16.61 /
244
9.59 /
373
373
2
3
36
4
3.545x3.545
5.42
5.42
6.8
8
67
7
0
3
422
244
2
3
36
4
15