THIELE-SMALL PARAMETERS
T/S parameters are used to design sealed, vented and other types of speaker enclosures.
The information is provided for users who have computer speaker CAD programs or wish to
calculate box parameters long hand.
Random samples of each model were selected for parameter testing from shipping stock.
Each driver was broken in by driving it at its resonant frequency to an excursion of Xmax for a
period of two hours before testing. This break-in settled the driver’s parameters which shift
slightly during the first few hours of use. Multiple test were taken of each driver and averaged
for accuracy.
Test equipment used included an Audio Precision test instrument driven by a PC computer.
Additional data was calculated or verified by LEAP (Loudspeaker Enclosure Analysis Program) on
a PC computer.
Because parameters shift during break-in, optimum low bass performance should be expect-
ed after approximately four to five hours of normal use.
Competition™ Series Drivers
MODEL C18c C15c C12c C10c C8c C6.5c
SPL 1W/1M 91.8dB 90.57dB 89.56dB 89.75dB 88.57dB 87.31dB
Displacement, cc 4720.28 2677.31 1523.66 945.04 408.04 366.41
Displacement, Culn 288.05 163.38 92.98 57.67 24.9 22.36
Hole Cutout, in. dia. 16-1/2" 14" 11-1/8" 9-1/8" 7-1/8" 5-5/8"
Mounting Depth, in. 7-1/2" 6" 5" 4-3/8" 3-3/8" 2-7/8"
Revc 3.23Ω 3.59Ω 3.59Ω 3.59Ω 3.48Ω 3.48Ω
Sd, SqM 0.1201 0.0830 0.0531 0.0340 0.0214 0.0133
BL 13.32 10.26 9.61 9.32 6.68 7.79
Vas, Liters 707.32 556.54 444.43 177.76 70.84 19.23
Vas, CuFt. 24.82 19.53 15.59 6.24 2.49 0.67
Mms, gms 215.18 118.17 81.78 50.40 26.97 23.20
Fs 18.5 19.4 16.7 21.5 29.3 37.7
Qms 6.719 6.551 6.985 8.107 7.497 3.881
Qes 0.454 0.492 0.334 0.282 0.387 0.315
Qts 0.425 0.457 0.318 0.272 0.368 0.291
Pmax, watts 1000 500 400 300 200 150
Xmax,mm 11.12 7.68 7.68 7.68 4.80 4.80
Freq. Response (Hz) 20-200 20-200 20-200 25-200 30-600 30-600
Magnet Weight (Oz.) 110 60 38 32 20 20
Voice Coil (Kapton) 3" 2" 2" 2" 1.5"" 1.5"
Preliminary - Based on 4Ω model measurements
Freeair™ Series Drivers
MODEL F15c F12c F10c F8c F6x9c F6.5c
SPL 1W/1M 90.39dB 88.7dB 89.74dB 88.25dB 87.28dB 89.96dB
Displacement, cc 2677.31 1523.66 945.04 408.04 383.46 366.41
Displacement, Culn 163.38 92.98 57.67 24.9 23.4 22.36
Hole Cutout, in. dia. 14" 11-1/8" 9-1/8" 7-1/8" Oval 5-5/8"
Mounting Depth, in. 6" 5" 4-3/8" 3-3/8" 3-5/8" 2-7/8"
Revc 3.59Ω 3.59Ω 3.59Ω 3.48Ω 3.48Ω 3.48Ω
Sd, SqM 0.0830 0.0531 0.0340 0.0214 0.0204 0.0133
BL 10.38 9.61 8.69 7.08 7.56 7.43
Vas, Liters 246.93 146.89 81.95 19.28 22.91 14.73
Vas, CuFt. 8.66 5.15 2.88 0.68 0.80 0.52
Mms, gms 122.59 90.99 45.46 29.86 26.98 23.02
Fs 28.6 27.6 32.4 53.5 49.2 43.2
Qms 8.036 8.650 5.395 6.145 4.366 6.121
Qes 0.734 0.613 0.440 0.696 0.508 0.395
Qts 0.673 0.572 0.407 0.625 0.455 0.371
Pmax, watts (Vented) 500 400 300 200 200 150
Pmax, watts (Freeair) 300 250 200 150 150 100
Xmax,mm 7.68 7.68 7.68 4.80 4.80 4.80
Freq. Response (Hz) 20-200 20-200 25-200 30-600 30-600 30-600
Magnet Weight (Oz.) 60 38 32 20 20 20
Voice Coil (Kapton) 2" 2" 2" 1.5" 1.5” 1.5"
Preliminary - Based on 4Ω model measurements
If you have more questions about the installation of your new KICKER component, see the
Authorized KICKER Dealer where you purchased your component. You may also call our Technical
Services Line at 405 624-8583 for technical assistance
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