DLS PERFORMANCE W308B - Page 2

W308B W310D W312D
Size 20 cm (8") 25 cm (10") 30 cm (12")
Impedance 4 ohm 4 ohm 4 ohm
Nom. power (RMS) 100 W (max 150) 120 W (max 200) 150 W (max 250)
Freq. range 30 Hz - 2 kHz 25 Hz - 2 kHz 20 Hz - 2 kHz
Sensitivity 87,1 db 89 dB 91 dB
Voice coil diameter 50 mm (2”) 50 mm (2”) 50 mm (2”)
Voice coil height 22 mm (0,87”) 22 mm (0,87”) 22 mm (0,87”)
Re 3,1 ohm 3,4 ohm 3,3 ohm
Voice coil inductance, 1 kHz 1,5 mH 1,1 mH 1,1 mH
BL product 7,8 11,5 12,22
X-max +-5 mm (0,2”) +-5 mm (0,2”) +-5 mm (0,2”)
Suspension compliance CMS 478 349 317
SD- Effective piston area 214 cm
2
314,6 cm
2
452,3 cm
2
Resonant freq. (Fs) 36,3 Hz 36 Hz 30 Hz
Vas (liters) 30,5 48,6 115
Vas (ft
3
) 1,08 1,72 4,06
Qms 3,55 2,49 3,26
Qes 0,45 0,32 0,36
Qts 0,40 0,28 0,34
Cone material Coated non-compress paper Coated non-compress paper Coated n-cp paper
Magnet weight 40 oz (1,13 kg) 40 oz (1,13 kg) 50 oz (1,42 kg)
Magnet diameter 4,7" (120 mm) 5,7" (145 mm) 6,14" (156 mm)
Installation depth 3,94" (100 mm) 5,28" (134 mm) 5,83" (148 mm)
Mounting hole 7,08" (180 mm) 9,45" (240 mm) 11,1" (282 mm)
Outer diameter 8,27" (210 mm) 10,43" (265 mm) 12,13" (308 mm)
Weigth 6,6 lb (3 kg) 8,82 lb (7 kg) 10,36 lb (4,7 kg)
TECHNICAL SPECIFICATIONS FOR DLS PERFORMANCE SUBWOOFERS
RECOMMENDED ENCLOSURES FOR W308B, W310D & W312D
W308B
Vb1 Vb2 port Vb2
8,02 4,93 1x6,8x33 cm
0,28 ft
3
0,17 ft
3
1x3"x13" (US)
F3 Vb1: 50 Hz, Vb2: 141,9 Hz
VENTED ENCLOSURE
Subwoofer Volume (liters/ft3) Port Damping F3 Fb
W308B vol: 18 / 0,64 3” x 30 cm/ 11,8” Line inside 45,9 Hz 45 Hz
W310D vol: 28,5 / 1,0 3” x 14 cm/5,5” Line inside 48,4 Hz 45,0 Hz
W312D vol: 41,6 / 1,47 4” x 32 cm/12,6” Line inside 47,1 Hz 40,2 Hz
SEALED ENCLOSURE
W310D sealed enclosure:
18 liters / 0,64 ft
3
We don´t recommend the use of
sealed enclosures for W308B &
W312D
The speaker is installed in Vb1
playing into chamber Vb2 where
the port(s) are installed.
F3 = approximative lower frequency for
vented boxes in Hz. Often called F-3 dB point
= the point where the power is 50% lower.
Fb = Box resonant frequency
SEALED BANDPASS
W310D
Vb1 Vb2 port Vb2
22,17 13,98 1x10,2x35,5 cm
0,78 ft
3
0,49 ft
3
1x4"x14" (US)
F3 Vb1: 40 Hz, Vb2: 118 Hz
W312D
Vb1 Vb2 port Vb2
32,84 37,23 2x10,2x19 cm
1,16 ft
3
1,32 ft
3
2 x 4" x 7,5" (US)
F3 Vb1: 45 Hz, Vb2: 99 Hz
Vb1=rear, Vb2=front
RUNNING-IN PERIOD
Allow the speaker to play for at least
15-20 hours. After this time the
performance is correct.