P.Audio C18-1200 is an 18-inch 8 ohm LF driver rated at 1400 W RMS. The validated T/S data includes Fs 38 Hz, Qts 0.55, Vas 136.4 L, Xmax 9.5 mm, sensitivity 93.2 dB, plus 1164 cm³ Vd and 67 EBP. bits tracks vendor pricing, datasheet links, simulator import data, and similar drivers from the same loudspeaker database.
The published T/S values agree with each other
Thiele/Small
Fs
38Hz
Qts
0.55
Qes
0.57
Qms
13
Vas
136.4L
Re
5.6Ω
Le
0.99mH
Motor and cone
BL
25.1T·m
Sd
1225cm²
Mms
265g
Xmax
9.5mm
Vd †
1164cm³
Voice coil
114mm
Flux density
1.10T
Power and response
Sensitivity †
93.2dB
Manufacturer sensitivity
95dB
Power
1400W
Nominal power
1400W
Impedance
8Ω
Range
38–1000Hz
EBP †
67 · Sealed or vented
Size and mounting
Diameter
467.3mm
Cutout
425.3mm
Depth
201.2mm
Weight
18.1kg
Other published values
Cms
0.06mm/N
Power Program
2800
Other dimensions
Mounting Depth
201.2
Mounting Diameter
446
Sensitivity shows 93.2 dB, calculated from the T/S values. P.Audio publishes 95.0 dB, 1.8 dB apart.