P.Audio C18-650EL-V4 is an 18-inch 8 ohm LF driver rated at 1200 W RMS. The validated T/S data includes Fs 35 Hz, Qts 0.68, Vas 127.0 L, Xmax 7 mm, sensitivity 90.9 dB, plus 837 cm³ Vd and 50 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
35Hz
Qts
0.68
Qes
0.71
Qms
15.8
Vas
127.0L
Re
6.1Ω
Le
0.96mH
Motor and cone
BL
22.1T·m
Sd
1195cm²
Mms
201g
Xmax
7mm
Vd †
837cm³
Voice coil
99mm
Flux density
0.98T
Power and response
Sensitivity †
90.9dB
Manufacturer sensitivity
96dB
Power
1200W
Nominal power
1200W
Impedance
8Ω
Range
35–1000Hz
EBP †
50 · Leans sealed
Size and mounting
Diameter
466mm
Cutout
427mm
Depth
220mm
Weight
14.2kg
Other published values
Cms
0.06mm/N
Power Program
2400
Other dimensions
Mounting Depth
220
Mounting Diameter
446
Sensitivity shows 90.9 dB, calculated from the T/S values. P.Audio publishes 96.0 dB, 5.1 dB apart.