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)
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)
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.)
Specifications subject to change without notice
© 2012 MD Audio Engineering—all rights reserved
CO104D
CO124D
40.5
37.9
0.971
2.012
27.49
56.99
8.399
6.652
0.670
0.746
0.620
0.671
7.2
7.2
8
8
3.69
2.66
86.2
88.1
0.406
0.410
10.2925
10.4075
400
400
800
800
1600
1600
100.98
133.45
0.146876
0.131938
16.95
17.52
363.05
551.55
56.273
85.490
40 - 250
37 - 250
60
51
0.053
0.067
10.28/261
12.44/316
9.13/232
10.91/277
5.22/132.5
5.61/142.5
50
50
10.16/258
12.20/310
0 .75
1
CO154D
27.9
5.963
168.844
7.369
0.507
0.474
7.2
8
4.90
90.5
0.453
11.5
600
1200
2400
200.3
0.162540
22.33
855.3
132.572
27 - 250
55
0.123
15.47/393
13.82/351
6.79/172.5
90
15.16/385
2
19