Specifications

TECHNICAL SPECIFICATIONS FOR DLS CLASSIC SUBWOOFERS
OA10 OA12
Size 25 cm (10") 30 cm (12")
Impedance 4 ohm 4 ohm
Nom. power (RMS) 180 W (max 360) 210 W (max 400)
Freq. range 25 Hz- 2 kHz 20 Hz-2 kHz
Sensitivity 86,5 dB 88,4 db
Voice coil diameter 50 mm (2”) 50 mm (2”)
Voice coil height 34 mm (1,34”) 34 mm (1,34”)
Re 3,59 ohm 3,55 ohm
Voice coil inductance, 1 kHz 1,72 mH 1,79 mH
BL product 11,96 12,53
X-max +-9 mm (0,35”) +-9 mm (0,35”)
Suspension compliance CMS 183 167
SD- Effective piston area 314,6 cm
2
452,3 cm
2
Resonant freq. (Fs) 39,9 Hz 37,8 Hz
Vas (liters) 25,5 48
Vas (ft
3
) 0,6 1,69
Qms 3,19 3,47
Qes 0,55 0,57
Qts 0,47 0,49
Cone material Coated non-compressed paper on both models
Magnet weight 80 oz (2,27 kg) 80 oz (2,27 kg)
Magnet diameter 5,71" (145 mm) 5,71" (145 mm)
Installation depth 5,35" (136 mm) 6" (153 mm)
Mounting hole 9,37" (238 mm) 11,10" (282 mm)
Outer diameter 10,55" (268 mm) 12,28" (312 mm)
Weigth 11,68 lb (5,3 kg) 12,35 lb (5,6 kg)
RECOMMENDED ENCLOSURES FOR OA10 & OA12
VENTED ENCLOSURE
Subwoofer Volume (liters/ft3) Port Damping F3 Fb
OA10 vol: 29 / 1,02 3” x 28 cm/11” Line inside 34,7 Hz 35,0 Hz
OA12 use sealed enclosure
SEALED ENCLOSURE
SEALED BANDPASS
OA10
Vb1 Vb2 Port Vb2
11,96 13,35 1x10,2x46 cm
0,42 ft
3
0,47 ft
3
1x4"x18,1" (US)
F3 Vb1: 42,9 Hz, Vb2: 102,1 Hz
OA12
Vb1 Vb2 Port Vb2
31,68 52,88 3x10,2cm x21 cm
1,12 ft
3
1,87 ft
3
3 x 4" x 8,26" (US)
F3 Vb1: 48,2 Hz, Vb2: 89,6 Hz
Vb1=rear, Vb2=front
OA10: use vented enclosure
OA 12 sealed enclosure:
39 liters / 1,38 ft
3
F3: 49,4 Hz
or if you want a smaller box:
27 liters / 0,95 ft
3
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
OA10 & OA12 subwoofers are
designed for open air use but
can also be used in these
enclosures.
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