Eminence Alpha-8MRA – 8-Inch 250W 8-Ohm Woofer
SKU: Alpha-8MRA-
The Eminence Alpha-8MRA is an 8-Inch 250W 8-Ohm Woofer.
Our Price: $109.99
In stock
Description
The Eminence Alpha-8MRA is an 8-Inch 250W 8-Ohm Woofer.
The Eminence Alpha-8MRA is recommended for pro audio and bass guitar applications as a midrange. Sealed basket makes this woofer independent of enclosure design.
Specification:
Nominal Basket Diameter: 8″, 203 mm
Nominal Impedance*: 8 Ω
Power Rating**
Watts: 125 W
Music Program: 250 W
Resonance: 514 Hz
Usable Frequency Range: 400 Hz – 4.8 kHz
Sensitivity***: 100.9 dB
Magnet Weight: 20 oz.
Gap Height: 0.25″, 6.4 mm
Voice Coil Diameter: 1.5″, 38 mm
Thiele & Small Parameters:
Resonant Frequency (fs): 514 Hz
DC Resistance (Re): 7.32 Ω
Coil Inductance (Le): 0.34m H
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): 0 cc
Mechanical Compliance of Suspension (Cms): 0.01 mm/N
BL Product (BL): 8.9 T-M
Diaphragm Mass Inc. Airload (MMs): 7 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. mm
Mounting Information:
Recommended Enclosure Volume
Sealed: N/a
Vented: – liters / – cu.ft.
Driver Volume Displaced: 0.02 cu.ft. / 0.58 liters
Overall Diameter: 8.22″, 208.8 mm
Baffle Hole Diameter: 7.19″, 182.6 mm
Front Sealing Gasket: Yes
Rear Sealing Gasket: Yes
Mounting Holes Diameter: 0.22″, 5.6mm
Mounting Holes B.C.D.: 7.78″, 197.6mm
Depth: 3.25″, 82.6 mm
Net Weight: 4.4 lbs, 2 kg
Shipping Weight: 5.1 lbs, 2.31 kgs
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 with closed back
Cone Composition: Paper cone
Cone Edge Composition: Paper cone edge
Dust Cap Composition: Solid composition paper dust cap