12inch karaoke woofer speaker( W126503)

karaoke woofer speaker 1. Outside 4 layer copper VC 2. 250W (RMS) 3. 93db (SPL) 4. 33-2000Hz

karaoke woofer speaker( W126503)

MODEL	W126503
TYPE	MID-BASS
GENERAL SPECIFICATIONS
Nominal Diameter 300/12 mm/inch Rated impedance 8 ohm Power handing capacity 250 watts Sensitivity 93 dB Frequency Range Fs-2000 Hz Voice Coil Diameter 65/2.5 mm/inch Voice Coil Material Copper    Number of layer 4   Kind of layer outside
THIELE-SMALL PARAMETERS
Resonance frequency Fs 33 Hz  Dc resistance Re 5.8 ohm Mechanical factor Qms 12.1   Electrical factor Qes 0.36   Total factor Qts 0.35   BL factor BL 14.8 T.M Effective Moving mass Mms 67 g Effective Cas air load Vas 125 liters Effective piston area Sd 0.05 m^2
MOUNTING INFORMATION
Overall Diameter 302/11.9 mm/inch Bolt Circle Diameter 296/11.7 mm/inch  Bolt Hole Diameter 8-f6.5/8-f0.26 mm/inch Mount Baffle Cut-out 258/10.2 mm/inch Depth 140/5.5 mm/inch
SHIPPING INFORMATION
Net Weight 4 kg Shipping Weight 4.5 kg  Package Size 580X330X170/2pcs mm

12inch karaoke woofer speaker( W126503)