BETA-12LTA
SPECIFICATION
Nominal Basket Diameter	12", 304.8mm
Nominal Impedance*	8 ohms
Power Rating
Watts	225W
Music Program	450W
Resonance	45Hz
Usable Frequency Range	48Hz-8kHz
Sensitivity***	97.7
Magnet Weight	38 oz.
Gap Height	0.312", 7.92mm
Voice Coil Diameter	2", 50.8mm
THIELE & SMALL PARAMETERS
Resonant Frequency (fs)	45Hz
DC Resistance (Re)	7.37
Coil Inductance (Le)	0.83mH
Mechanical Q (Qms)	6.44
Electromagnetic Q (Qes)	0.55
Total Q (Qts)	0.51
Compliance Equivalent Volume (Vas)	136.3 liters / 4.8 cu.ft.
Peak Diaphragm Displacement Volume (Vd)	170cc
Mechanical Compliance of Suspension (Cms)	0.34mm/N
BL Product (BL)	11.7 T-M
Diaphram Mass inc. Airload (Mms)	36 grams
Efficiency Bandwidth Product (EBP)	82
Maximum Linear Excursion (Xmax)	3.2mm
Surface Area of Cone (Sd)	532.4 cm2
Maximum Mechanical Limit (Xlim)	8.0mm
MOUNTING INFORMATION
Recommended Enclosure
Sealed	14-51 liters/0.5-1.8 cu.ft.
Vented	56.6-116 liters/2-4.1 cu.ft.
Overall Diameter	12.03", 305.5mm
Baffle Hole Diameter	10.95", 278.1mm
Front Sealing Gasket	fitted as standard
Rear Sealing Gasket	fitted as standard
Mounting Holes Diameter	0.25", 6.4mm
Mounting Holes B.C. D.	11.59", 294.3mm
Depth	4.47", 114mm
Net Weight	8.1 lbs., 3.7 kg
Shipping Weight	10.2 lbs., 4.6 kg
MATERIALS OF CONSTRUCTION
Coil Construction	Copper voice coil
Coil Former	Polyimide former
Magnet Composition	Ferrite magnet
Core Details	Vented core
Basket Materials	Pressed steel basket
Cone Composition	Paper Cone
Cone Edge Composition	Cloth cone edge
Dustcap Composition	Solid composition paper dust cap

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