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Eminence Alpha 15 - 200W 15" Driver 8 ohm
The Eminence Alpha 15 is ideal for use as a woofer in lower power 2-way systems.
SPECIFICATION
THIELE & SMALL PARAMETERS
MOUNTING INFORMATION
MATERIALS OF CONSTRUCTION
SPECIFICATION
- 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/W@1m
- 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) 260.0 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
- Diaphram 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
- Sealed 71-85 liters/2.5-3 cu.ft.
- Vented 106-177 liters/3.75-6.25 cu.ft.
- Overall Diameter 15.15", 384.8mm
- Baffle Hole Diameter 13.77", 349.6mm
- Magnet diameter 129mm
- 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 148mm, 5.83"
- Net Weight 6.7 lbs., 3 kg
- Shipping Weight 8.8 lbs., 4 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
Technical specifications
- Nominal Diameter: 381 mm (15 in)
- Overall Diameter: 384.8 mm (15.15 in)
- Bolt Circle Diameter: 369.8 mm (14.56 in)
- Mounting Holes Diameter: 6.4 mm (0.25 in)
- Baffle Cutout Diameter: 352.3 mm (13.87 in)
- Overall Depth: 148.1 mm (5.83 in)
- Front Sealing Gasket: Yes
- Rear Sealing Gasket: Yes
- Impedance: 8 ohm
- AES Power: 200 W
- Program Power: 400 W
- Sensitivity: 97 dB
- Voice Coil Diameter: 38 mm (1.5 in)
- Voice Coil Material: Copper voice coil
- Voice Coil Former: Polyimide former
- Magnetic Gap Depth: 6.4 mm (0.25 in)
- Cone Material: Paper cone
- Dust Cap Material: Solid composition paper dust cap
- Surround Material: Cloth cone edge
- Chassis Material: Pressed steel basket
- Magnet Material: Ferrite magnet
- Magnet Weight: 25 oz
- Core Details: Vented and extended core
- Sealed Enclosure Size: 71-85 L
- Vented Enclosure Size: 106-177 L
Thiele and small parameters
- Resonance (Fs) - 41 Hz
- DC Resistance (Re) - 5.88 Ohm
- Voice Coil Inductance (Le) - 0.84 mH
- Mechanical Q (Qms) - 7.23
- Electrical Q (Qes) - 1.53
- Total Q (Qts) - 1.26
- Compliance Equivalent Volume (Vas) - 260 L
- Peak Displacement Volume (Vd) - 325 cm3
- Compliance (Cms) - 0.25 mm/N
- Force Factor (BL) - 7.7 Tm
- Moving Mass - System (Mms) - 59 g
- Efficiency Bandwidth Product (EBP) - 27
- Maximum Linear Excursion (Xmax) - 3.8 mm
- Diaphragm Area (Sd) - 856.3 cm2
- Maximum Mechanical Excursion (Xmech) - 8.4 mm
Shipping Information
- Net Weight: 3.04 kg (6.7 lbs)
- Shipping Weight: 3.99 kg (8.8 lbs)
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