PCX840 S2/S4 – 4000 Series 8″ Pro 2-way

Single 4 ohm
Midrange                    Tweeter
Fs 80 Hz                 Fs     640 Hz
Qms 7.861                SPL    107 dB
Vas 20.8467 l
Cms 0.261 mm/N
Mms 15.004 g
Rms 0.97 kg/s
Dia 173.80 mm
Sd 237.79 cm²	
Qes 0.389
Re 3.71 Ω
Le 0.094 mH
Bl 8.519 Tm
Qts 0.371
no 2.689 %
SPL 97 dB

Single 2 ohm
Midrange
Fs 83.5 Hz
Qms 8.176
Vas 18.3573 l
Cms 0.229 mm/N
Mms 15.93 g
Rms 1.018 kg/s
Dia 173.8 mm
Sd 237.79 cm²
Qes 0.344
Re 1.88 Ω
Le 0.068 mH
Bl 6.747 Tm
Qts 0.33
no 2.989 %
SPL 97 dB

Frame Outer Diameter	8 19/32"   (218.5mm)
Grille Outer Diameter	" (mm)
Motor Outer Diameter	3 15/16"   (100mm)
Tweeter Protrusion	1  3/32"    (28mm)
Grille Protrusion	  " (mm)
Mounting Hole Diameter	7 3/32"   (180.3mm)
Mounting Depth		3 15/32"  (88mm)