Eminence Beta 8A

8" 225 Watt

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 Ω
Power Rating*
Program Power	450 W
Watts	225 W
Resonance	65 Hz
Usable Frequency Range	78 Hz - 4.5 kHz
Sensitivity*	95.1 dB
Magnet Weight	34 oz.
Gap Height	0.31", 7.9 mm
Voice Coil Diameter	2", 51 mm
THIELE & SMALL PARAMETERS
Resonant Frequency (fs)	65 Hz
DC Resistance (Re)	5.99 Ω
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	5.7-9.9 liters / 0.2-0.35 cu.ft.
Vented	8.5-19 liters / 0.3-0.67 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

Eminence BETA-8A 8" Speaker 225 Watts

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