PA and power bass speakers, 175 W, 8 ? (SP-300PA) and 4 ? (SP-304PA)

For bass and bass-midrange in medium-sized systems

Impedance (Z) 4 ?
Frequency range f3-4,000 Hz
Resonant frequency (fs) 40 Hz
Rec. crossov. frequ. (fmax.) (12 dB/oct.)
Music power (PMAX) 350 WMAX
Power rating (PRMS) 175 WRMS
Sensitivity 93 dB/W/m
Max. voltage-
Radiation angle-
Suspension compl. (Cms) 0.3 mm/N
Moving mass (Mms) 63 g
Mech. Q factor (Qms) 3.87
Electr. Q factor (Qes) 0.6
Total Q factor (Qts) 0.52
Equivalent volume (Vas) 117 l
DC resistance (Re) 3.6 ?
Force factor (BxL) 9.39 Tm
Voice coil induct. (Le) 0.4 mH
Voice coil diameter 39 mm
Voice coil former aluminium
Linear excursion (XMAX) ±3.25 mm
Eff. cone area (Sd) 514 cm2
Magnet weight 850 g
Magnet diameter
Mounting cutout Ø 280 cm
Mounting depth 130 mm
Mounting hole diameter
Dimensions Ø 305 mm x 130 mm
Outside diameter
Width
Height
Depth
Weight 3 kg