SPECIFICATIONS
Model/Part Number CO104D CO124D CO154D
Thiele/Small Parameters
Fs (free-air resonance, Hz)
40.5 37.9 27.9
Vas (equivalent compliance, cu. ft.)
0.971 2.012 5.963
Vas (equivalent compliance, liters)
27.49 56.99 168.844
Qms (Q, mechanical)
8.399 6.652 7.369
Qes (Q, electrical)
0.670 0.746 0.507
Qts (total driver Q)
0.620 0.671 0.474
Re (DC resistance, ohms)
7.2 7.2 7.2
Z (nominal impedance, ohms)
8 8 8
Le (inductance, mh)
3.69 2.66 4.90
Efficiency (1W @ 1M, dB)
86.2 88.1 90.5
Xmax (one way linear excursion, in.)
0.406 0.410 0.453
Xmax (one way linear excursion, mm)
10.2925 10.4075 11.5
RMS Power Watts
400 400 600
Nominal Power Watts
800 800 1200
MAX Music Power Watts
1600 1600 2400
Mms (total moving mass, grams)
100.98 133.45 200.3
Cms (mechanical compliance, mm/N)
0.146876 0.131938 0.162540
Bl (motor strength, Tesla-M)
16.95 17.52 22.33
Sd (effective radiating area, sq. cm.)
363.05 551.55 855.3
Sd (effective radiating area, sq. in.)
56.273 85.490 132.572
Frequency range (Hz)
40 - 250 37 - 250 27 - 250
Energy Bandwidth Product (EBP)
60 51 55
Driver Physical Dimension
Speaker Displacement (cu ft)
0.053 0.067 0.123
Speaker Outer Diameter (inches/mm)
10.28/261 12.44/316 15.47/393
Mounting hole diameter (inches/mm)
9.13/232 10.91/277 13.82/351
Mounting depth (inches/mm)
5.22/132.5 5.61/142.5 6.79/172.5
Magnet Weight (Oz)
50 50 90
Basket diameter (inches/mm)
10.16/258 12.20/310 15.16/385
Recommended Enclosures
Typical sealed enclosure (cu. ft.) 0 .75 1 2
Specifications subject to change without notice
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