Celestion TF1230S 12-inch, Pressed Steel Chassis, Ferrite Magnet Bass / Mid Driver
12 inch replacement woofer for Mackie SRM450 MK2 and MK3
Increased chassis diameter for compatibility with popular portable two-way reinforcement systems
Specifications
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Nominal diameter: 305mm / 12in
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Power rating: 300W
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Continuous power rating: 600W
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EIA power rating: 450W
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Rated impedance: 8Ω
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Sensitivity: 96dB
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Frequency range: 50-4000Hz
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Chassis type: Pressed steel
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Magnet type: Ferrite
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Magnet weight: 1.7kg / 60oz
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Voice coil diameter: 75mm / 3in
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Voice coil material: Edgewound copper clad aluminium
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Former material: Polyimide
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Cone material: Kevlar loaded paper
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Surround material: Cloth-sealed
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Suspension: Single
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Gap height (Hg): 8mm / 0.31in
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VC winding height (Hvc): 17mm / 0.67in
Parameters
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Sd: 530.93cm2 / 82.29in2
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Fs: 60.30Hz
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Mms: 51.08g / 1.8oz
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Qms: 3.28
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Qes: 0.422
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Qts: 0.374
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Re: 5.98Ω
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Vas: 54.41l / 1.92ft3
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BI: 16.56Tm
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Cms: 0.14mm/N
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Rms: 5.91kg/s
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Le (at 1kHz): 0.98mH
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Xmax: 4.5mm / 0.18in
Mounting Information
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Overall diameter: 317.5mm / 12.5in
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Overall depth: 137mm / 5.4in
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Cut-out diameter: 283mm / 11.14in
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Mounting hole dimensions: 13x6.5mm / 0.51x0.26in
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Number of mounting holes: 8
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Mounting hole PCD: 299mm / 11.77in
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Unit weight: 4.3kg / 9.5lb
Packed Dimensions & Weight
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Single pack size W x D x H: 330mm x 330mm x 150mm / 13in x 13in x 5.9in
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Single pack weight: 5.5kg / 12.0lb
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 2π anechoic environment.
Parameters: Measured after unit subjected to pre-conditioning signal.
Xmax: Hvc-Hg/2
