Eminence Alpha 8MRA 8" Woofer

Regular price $44.99 Sale

 

ALPHA-8MRA

 

 

CALL 801-771-1820 with any questions!!!
We have many more of these in stock - Ebay will only let us list 2 at a time.

We have distributed Eminence for 18 years.
We have all the other major PRO Audio Speaker Brands and Models.
We sell to Dealers as well.

 

 

 

 

SPECIFICATION

 

 

 

 

 

 

Nominal Basket Diameter

 

 

8", 203.2mm

 

 

 

Nominal Impedance*

 

 

8 ohms

 

 

 

Power Rating

 

 

 

 

 

 

Watts

 

 

125W

 

 

 

Music Program

 

 

250W

 

 

 

Resonance

 

 

514Hz

 

 

 

Usable Frequency Range

 

 

400Hz-4.8kHz

 

 

 

Sensitivity***

 

 

100.9

 

 

 

Magnet Weight

 

 

20 oz.

 

 

 

Gap Height

 

 

0.25", 6.35mm

 

 

 

Voice Coil Diameter

 

 

1.5", 38.1mm

 

 

 

 

 

 

 

 

 

 

THIELE & SMALL PARAMETERS

 

 

 

 

 

 

Resonant Frequency (fs)

 

 

DC Resistance (Re)

 

 

7.32

 

 

 

Coil Inductance (Le)

 

 

0.34mH

 

 

 

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)

 

 

0.01mm/N

 

 

 

BL Product (BL)

 

 

8.9 T-M

 

 

 

Diaphram Mass inc. Airload (Mms)

 

 

6.9 grams

 

 

 

Efficiency Bandwidth Product (EBP)

 

 

247

 

 

 

Maximum Linear Excursion (Xmax)

 

 

1.6mm

 

 

 

Surface Area of Cone (Sd)

 

 

205.9 cm2

 

 

 

Maximum Mechanical Limit (Xlim)

 

 

3.0mm

 

 

 

 

 

 

 

 

 

 

MOUNTING INFORMATION

 

 

 

 

 

 

Recommended Enclosure

 

 

 

 

 

 

Sealed

 

 

N/A

 

 

 

Vented

 

 

N/A

 

 

 

Overall Diameter

 

 

8.22", 208.8mm

 

 

 

Baffle Hole Diameter

 

 

7.19", 182.5mm

 

 

 

Front Sealing Gasket

 

 

Fitted as standard

 

 

 

Rear Sealing Gasket

 

 

Fitted as standard

 

 

 

Mounting Holes Diameter

 

 

0.22", 5.5mm

 

 

 

Mounting Holes B.C. D.

 

 

7.75", 196.9mm

 

 

 

Depth

 

 

3.25", 83mm

 

 

 

Net Weight

 

 

4.4 lbs., 2 kg

 

 

 

Shipping Weight

 

 

5.1 lbs., 2.3 kg

 

 

 

 

 

 

 

 

 

 

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

 

 

 

Dustcap Composition

 

 

Solid composition paper dust cap