12" - 4ohm - 560W | 1265MX | "MX" Series | BUMPER MADE IN USA.

BUMPER

SPEAKER MODEL: 1265 MX

Diameter size in inches: 12

Diameter size in centimeters: 30.48

Z-Nominal Impedance in Ohms: 4

Fs Free air resonance frequency in Hz: 34.1

Qts Total Q Factor of driver: 0.38

Vas Equivalent acoustic volume in cubic feet: 4.38

Vas Equivalent acoustic volume in liters: 123.91

Xmax = peak linear displacement of cone in inches: 0.30

Xmax peak linear displacement of cone in mm: 7.62

Pe=Max power in watts: 560

Ref Driver's SPL 1W at 1m in dB: 92.8

SPL The half-space ref. Efficiency: 92.8

Voice Coil Diameter in inches: 2.5

Mounting Depth in inches: 51/2

Sd=Piston Area in sq. m: 0.0531

BL T'M Flux Density, Length Product : 11.4134

no The half-space ref. efficiency: 1.21%

Cms Mechanical suspen. compliance: 309.469

Mms Mech. mass of cone & free air load: 70.438

Qms Mechanical Q factor of driver: 7.876

Qes Electrical Q factor of driver: 0.3938

Revc DC Voice coil resistance in Ohms: 3.4

Zmax imped. At top of resonance curve in Ohms: 71.404

Fo Free air resonance frequency in Hz: 34.089

Magnet weight (oz): 65

BOXES FOR 1 SPEAKER APPLICATION RECOMMENDED ENCLOSURES FOR SEALED BOXES (WOOD IS 3/4").

Enclosure size (cubic feet) Outside volume (Vb) —> 1.50

Enclosure size (liters) Outside volume —> 42.48

Number of ports on the front of a box —> 1

Port size (inches) N/A

Turning frequency Hz (Fb) —> 47.52

Cutoff frequency Hz (F3) —> 54.61

BUMPER INDUSTRIES INC.

Warning! Loudspeakers can produce sound levels that can permanently damage hearing. The threshold of pain is always an indicator that the sound level is too loud. To establish a safe level of sound start your volume control at a low setting and slowly increase the sound level until you can hear it comfortably and clearly without distortion.

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