P.Audio 18NT-115XB is an 18-inch 8 ohm LF driver rated at 1600 W RMS. The validated T/S data includes Fs 33 Hz, Qts 0.44, Vas 112.7 L, Xmax 9.8 mm, sensitivity 91.6 dB, plus 1201 cm³ Vd and 73 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
33Hz
Qts
0.44
Qes
0.45
Qms
13.3
Vas
112.7L
Re
5.2Ω
Le
0.98mH
Motor and cone
BL
29.0T·m
Sd
1225cm²
Mms
288g
Xmax
9.8mm
Vd †
1201cm³
Voice coil
114mm
Flux density
1.20T
Power and response
Sensitivity †
91.6dB
Manufacturer sensitivity
97dB
Power
1600W
Nominal power
1600W
Impedance
8Ω
Range
33–1000Hz
EBP †
73 · Sealed or vented
Size and mounting
Diameter
467mm
Cutout
426mm
Depth
226.5mm
Weight
12.3kg
Other published values
Cms
0.054mm/N
Power Program
3200
Other dimensions
Mounting Depth
226.5
Mounting Diameter
446
Sensitivity shows 91.6 dB, calculated from the T/S values. P.Audio publishes 97.0 dB, 5.4 dB apart.