ALPHA- Series 100W- 200W

Recommended for professional audio and bass guitar applications as a mid-range. Sealed basket makes this 
woofer independent of enclosure design.

SPECIFICATION

• Nominal Basket Diameter 8", 203.2 mm
• Nominal Impedance 8 ohms
• Power Rating Watts 125 W / Music Program 250 W
• Resonance 514 Hz
• Usable Frequency Range 400 Hz - 4.8 kHz
• Sensitivity 100.9
• Magnet Weight 20 oz.
• Gap Height 0.25", 6.35 mm
• Voice Coil Diameter 1.5", 38.1 mm

THIELE & Small Parameters

• Resonant Frequency (fs) 514 Hz
• DC Resistance (Re) 7.32
• Coil Inductance (Le) 0.34 mH
• Mechanical Q (Qms) 4.48
• Electromagnetic Q (Qes) 2.08
• Total Q (Qts) 1.42
• Compliance Equivalent Volume (Vas) 0.8 liters / 0.03 cu.ft.
• Peak Diaphragm Displacement Volume (Vd) 0cc
• Mechanical Compliance of Suspension (Cms) 0.01 mm/N
• BL Product (BL) 8.9 T-M
• Diaphragm Mass inc. Airload (Mms) 6.9 grams
• Efficiency Bandwidth Product(EBP) 247
• Maximum Linear Excursion (Xmax) 1.6 mm
• Surface Area of Cone (Sd) 205.9 cm²
• Maximum Mechanical Limit (Xlim) 3.0 mm

MOUNTING Information

• Recommended Enclosure Volume
• Sealed N/A
• Vented N/A
• Overall Diameter 8.22", 208.8 mm
• Baffle Hole Diameter 7.19", 182.5 mm
• Front Sealing Gasket fitted as standard
• Rear Sealing Gasket fitted as standard
• Mounting Holes Diameter 0.22", 5.5 mm
• Mounting Holes B.C.D. 7.75", 196.9 mm
• Depth 3.25", 83 mm

MATERIALS of Construction

• Copper voice coil
• Polyimide former
• Ferrite magnet
• Pressed steel basket with closed back
• Paper Cone
• Paper cone edge
• Solid composition paper dust cap