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Eminence ALPHA15A

Price: $64.99
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Recommended for professional audio and bass guitar applications as a woofer in a vented or sealed enclosure.
Nominal Basket Diameter: 15", 381mm
Nominal Impedance*: 8 ohms
Power Rating**
Watts: 200W
Music Program: 400W
Resonance: 41Hz
Usable Frequency Range: 46Hz - 3.5kHz
Sensitivity***: 97dB
Magnet Weight: 25 oz.
Gap Height: 0.25", 6.35mm
Voice Coil Diameter: 1.5", 38.1mm

Thiele & Small Parameters

Resonant Frequency (fs): 41Hz
DC Resistance (Re): 5.88
Coil Inductance (Le): 0.84mH
Mechanical Q (Qms): 7.23
Electromagnetic Q (Qes): 1.53
Total Q (Qts): 1.26
Compliance Equivalent Volume (Vas): 260 liters / 9.2 cu.ft.
Peak Diaphragm Displacement Volume (Vd): 325cc
Mechanical Compliance of Suspension (Cms): 0.25mm/N
BL Product (BL): 7.7 T-M
Diaphragm Mass Inc. Airload (MMs): 59 grams
Efficiency Bandwidth Product (EBP): 27
Maximum Linear Excursion (Xmax): 3.8mm
Surface Area of Cone (Sd): 856.3 cm2
Maximum Mechanical Limit (Xlim): 8.4mm

Mounting Information
Recommended Enclosure Volume
Sealed: 71-85 liters / 2.5-3 cu.ft.
Vented: 106-177 liters / 3.75-6.25 cu.ft.
Driver Volume Displaced: 195.9 / 3.21 liters
Overall Diameter: 15.15", 384.8mm
Baffle Hole Diameter: 13.77", 349.6mm
Front Sealing Gasket: Fitted as standard
Rear Sealing Gasket: Fitted as standard
Mounting Holes Diameter: 0.25", 6.4mm
Mounting Holes B.C.D.: 14.56", 369.9mm
Depth: 5.83", 148mm
Net Weight: 6.7 lbs, 3 kg
Shipping Weight: 8.8 lbs, 4 kgs

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
Dust Cap Composition: Solid composition paper dust cap


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