8 inch Eminence American Standard Series Replacement Speaker Eminence Speaker Basket
8 inch Eminence American Standard Series Replacement Speaker Eminence Speaker Cone
8 inch Eminence American Standard Series Replacement Speaker Eminence Speaker Side
8 inch Eminence American Standard Series Replacement Speaker Eminence Speaker Frequency Response
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ALPHA-8MRA 8" American Standard Series Speaker

Regular price
$109.99
Sale price
$109.99
Regular price
$139.99
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Recommended for pro audio and bass guitar applications as a midrange. Sealed basket makes this woofer independent of enclosure design.

Applications 

Midrange | Pro Audio | Bass Guitar

Box Type: Horn Loading

Specifications

Download Spec Sheet Download Cab Design
SPECIFICATION
Nominal Basket Diameter 8", 203 mm
Nominal Impedance* 8 Ω
Power Rating*
Program Power 250 W
Watts 125 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


Frequency Response

response graph