12-inch pressed steel chassis, ferrite magnet bass/mid-driver

Features

• Nominal diameter : 305mm / 12in
• Power rating : 150W
• Continuous power rating : 300W
• EIA power rating : 250W
• Rated impedance : 8O
• Sensitivity : 97dB
• Frequency range : 60-4000Hz
• Chassis type : Pressed steel
• Magnet type : Ferrite
• Voice coil diameter : 50mm / 2in
• Voice coil material : Round copper
• Former material : Polyimide
• Cone material : Kevlar loaded paper
• Surround material : Cloth-sealed
• Suspension : Single
• Gap height (Hg) : 8mm / 0.31in
• VC winding height (Hvc) : 12mm / 0.47in

Parameters

• Sd : 530.93cm2 / 82.29in2
• Fs : 55.80Hz
• Qms : 3.327
• Qes : 0.441
• Qts : 0.389
• Re : 5.46O
• Vas : 72.79l / 2.57ft3
• BI : 13.91Tm
• Cms : 0.18mm/N
• Le (at 1kHz) : 0.71mH
• Xmax : 4mm / 0.16in

Mounting Information

• Overall diameter : 309mm / 12.17in
• Overall depth : 131mm / 5.2in
• Cut-out diameter : 283mm / 11.14in
• Mounting hole dimensions : 7.9mm / 0.31in Ø
• Number of mounting holes : 4
• Mounting hole PCD : 297mm / 11.69in
• Power rating : Tested for two hours using a continuous, band-limited pink noise signal as per AES standard. Power calculated on minimum impedance. Loudspeaker tested in free air.
• Continuous power rating : Defined as 3dB greater than the AES rating.
• Sensitivity : Measured on axis at 1W, 1m in 2p anechoic environment.
• Parameters : Measured after unit subjected to pre-conditioning signal.
• Xmax : 0.5(Hvc-Hg) + 0.25Hg