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ALPHA-6A
SPECIFICATION
Nominal Basket Diameter 6.5", 165mm
Nominal Impedance* 8 ohms
Power Rating
Watts 100W
Music Program 200W
Resonance 118Hz
Usable Frequency Range 85Hz-6kHz
Sensitivity*** 93.6
Magnet Weight 20 oz.
Gap Height 0.25", 6.35mm
Voice Coil Diameter 1.5", 38.1mm

THIELE & SMALL PARAMETERS
Resonant Frequency (fs) 118Hz
DC Resistance (Re) 7.2
Coil Inductance (Le) 0.19mH
Mechanical Q (Qms) 5.68
Electromagnetic Q (Qes) 0.60
Total Q (Qts) 0.54
Compliance Equivalent Volume (Vas) 5.8 liters / 0.2 cu.ft.
Peak Diaphragm Displacement Volume (Vd) 44cc
Mechanical Compliance of Suspension (Cms) 0.26mm/N
BL Product (BL) 8.0 T-M
Diaphram Mass inc. Airload (Mms) 7 grams
Efficiency Bandwidth Product (EBP) 197
Maximum Linear Excursion (Xmax) 3.5mm
Surface Area of Cone (Sd) 126.7 cm2
Maximum Mechanical Limit (Xlim) 4.0mm

MOUNTING INFORMATION
Recommended Enclosure
Sealed 2.8-5.7 liters/0.1-0.2 cu.ft.
Vented 3.4-15.6 liters/0.12-0.55 cu.ft.
Overall Diameter 6.59", 167.4mm
Baffle Hole Diameter 5.69", 144.5mm
Front Sealing Gasket Fitted as standard
Rear Sealing Gasket Fitted as standard
Mounting Holes Diameter 0.23", 5.7mm
Mounting Holes B.C. D. 6.06", 154mm
Depth 2.8", 71mm
Net Weight 4.1 lbs., 1.9 kg
Shipping Weight 4.8 lbs., 2.2 kg

MATERIALS OF CONSTRUCTION
Coil Construction Copper voice coil
Coil Former Polyimide former
Magnet Composition Ferrite magnet
Core Details Vented and extended core
Basket Materials Pressed steel basket
Cone Composition Paper Cone
Cone Edge Composition Cloth cone edge
Dustcap Composition Solid composition paper dust cap