This 12" bass loudspeaker has been specifically designed to deliver exceptional low frequency reproduction, with high sensitivity and extremely low distortion. It incorporates a curvilinear cone attached to a rubber surround, in order to provide suspension stability and to allow maximum excursion linearity. By combining a powerful magnet construction with a cast aluminium basket, the 12BR70 achieves high power capacity, and consequently, contributes to reduce the thermal power compression.


TECHNICAL SPECIFICATIONS:

Power capacity            125 W RMS
Nominal diameter         300 mm 12 in
Nominal impedance      8 ohm
Minimum impedance    6.6 ohm
Program power            250 W
Sensitivity                    93 dB 1 W @ 1m @ 2Π
Frequency range         25-4000 Hz
Recommended enclosure volume 50 / 120 l 1.77 / 4.24 cu ft
Voice coil diameter      52 mm 2 inch
BL factor                     12.1 N/A
Moving mass               0.074
Winding length           19 mm
Air gap height             7 mm
Xdamage pp              25 mm


THIELE SMALL PARAMETERS:

Fs 31 Hz
Re 5.6 ohm
Qms 4.44
Qes 0.56
Qts 0.50
Vas 142 l
Cms 345 micro m / N
Rms 3.3 kg / s
Efficiency % 0.76
Sd 0.054 sq m
Xmax 8 mm
Vd 340 cu cm
Le @1 kHz 0.85 mH


CONSTRUCTIVE DETAILS:

Net weight     3.6 kg 7.92 lb
Total weight    4.1 kg 9.04 lb
Magnet Ferrite

Mounting Information

Overall diameter -     312 mm 12.28 in
Bolt circle diameter - 294.5 mm 11.59 in
Baffle cutout diameter: -
- Front mount -          277.5 mm 10.93 in
- Rear mount -          280 mm 11.02 in
Depth -                     125 mm 4.92 in
Net weight -                3.6 kg 7.93 lb
Shipping weight -       4.1 kg 9.04 lb