Eminence Beta-8A American Standard Series 8" 225-Watt Replacement PA Speaker 8 Ohm

Recommended for professional audio mid-bass applications or as a woofer in vented enclosures. Also suitable as a mid-bass speaker in sealed enclosures.

Specification Nominal Basket Diameter

• 8", 203 mm

Nominal Impedance*

• 8 ?

Power Rating Watts

• 225 W

Music Program

• 450 W

Resonance

• 65 Hz

Usable Frequency Range

• 78 Hz - 4.5 kHz

Sensitivity***

• 95.1 dB

Magnet Weight

• 34 oz.

Gap Height

• 0.312", 7.9 mm

Voice Coil Diameter

• 2", 51 mm

Thiele & Small Parameters Resonant Frequency (fs)

• 65 Hz

DC Resistance (Re)

• 5.99 ?

Coil Inductance (Le)

• 0.49m H

Mechanical Q (Qms)

• 4.95

Electromagnetic Q (Qes)

• 0.42

Total Q (Qts)

• 0.38

Compliance Equivalent Volume (Vas)

• 23.3 liters / 0.82 cu.ft.

Peak Diaphragm Displacement Volume (Vd)

• 63 cc

Mechanical Compliance of Suspension (Cms)

• 0.37 mm/N

BL Product (BL)

• 9.6 T-M

Diaphragm Mass Inc. Airload (MMs)

• 16 grams

Efficiency Bandwidth Product (EBP)

• 156

Maximum Linear Excursion (Xmax)

• 3 mm

Surface Area of Cone (Sd)

• 210 cm2

Maximum Mechanical Limit (Xlim)

• 7.4 mm

Mounting Information Recommended Enclosure Volume Sealed

• 5.70-9.90 liters / 0.20-0.35 cu.ft.

Vented

• 8.50-19.00 liters / 0.30-0.67 cu.ft.

Driver Volume Displaced

• 0.027 cu.ft. / 0.76 liters

Overall Diameter

• 8.24", 209.3 mm

Baffle Hole Diameter

• 7.13", 181.1 mm

Front Sealing Gasket

• Yes

Rear Sealing Gasket

• Yes

Mounting Holes Diameter

• 0.22", 5.6mm

Mounting Holes B.C.D.

• 7.75", 196.9mm

Depth

• 3.5", 88.9 mm

Net Weight

• 6.6 lbs, 2.99 kg

Shipping Weight

• 7.4 lbs, 3.36 kgs

Materials of Construction Coil Construction

• Aluminum voice coil

Coil Former

• Polyimide former

Magnet Composition

• Ferrite magnet

Core Details

• Vented core

Basket Materials

• Pressed steel basket

Cone Composition

• Paper cone

Cone Edge Composition

• Cloth cone edge

Dust Cap Composition

• Solid composition paper dust cap