Specs for the drivers
Ascendant Audio - Atlas 12"
Low Qts Specs
Fs 23.2 Hz
Qms 4.9
Qes .354
Qts .33
Vas 128.5 L
Re 2.8 ohms
Znom 4 ohms
Xmax 18 mm
Sd 481 cm2
Mms 119 g
Vd 1.73 L
RMS Power 300 watts
BL 11.7
Spl 1W/1M 88.5 dB
Spl 2.83V/1M 92.6 dB
Le .86 mH
Cms .395 mm/N
No. .442
Cutout 11.125"
Diameter 12.5"
Depth 6.5"
Weight 21 pounds
Mid Qts Specs
Fs 23.2 Hz
Qms 4.9
Qes .465
Qts .415
Vas 128.5 L
Re 2.8 ohms
Znom 4 ohms
Xmax 18 mm
Sd 481 cm2
Mms 119 g
Vd 1.73 L
RMS Power 300 watts
BL 10.2
Spl 1W/1M 87.2 dB
Spl 2.83V/1M 91.4 dB
Le .86 mH
Cms .395 mm/N
No. .336
Cutout 11.125"
Diameter 12.5"
Depth 6.5"
Weight 21 pounds
High Qts Specs
Fs 23.2 Hz
Qms 4.9
Qes .581
Qts .52
Vas 128.5 L
Re 2.8 ohms
Znom 4 ohms
Xmax 18 mm
Sd 481 cm2
Mms 119 g
Vd 1.73 L
RMS Power 300 watts
BL 9.1
Spl 1W/1M 86.3 dB
Spl 2.83V/1M 90.5 dB
Le .86 mH
Cms .395 mm/N
No. .271
Cutout 11.125"
Diameter 12.5"
Depth 6.5"
Weight 21 pounds