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Eminence BETA-8A: 8 inch Mid-Bass / Woofer

Price: $69.99 $59.99

Recommended for professional audio mid-bass applications or as a woofer in vented enclosures. Also suitable as a mid-bass speaker in sealed enclosures.
225 watts / 78-4.5kHz / 2″ voice coil
8 ohms

SKU: BETA-8A Categories: , ,

Description

BETA-8A

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

Click Here to Download PDF Spec Sheet

Click Here to Download PDF Cabinet Design

Specs:

Nominal Basket Diameter 8″, 203.2mm

Nominal Impedance* 8 ohms

Power Rating Watts 225W

Music Program 450W

Resonance 65Hz

Usable Frequency Range 78Hz-4.5kHz

Sensitivity*** 95.1

Magnet Weight 34 oz.

Gap Height 0.312″, 7.92mm

Voice Coil Diameter 2″, 50.8mm

Thiele & Small Parameters:

Resonant Frequency (fs) 65Hz

DC Resistance (Re) 5.99

Coil Inductance (Le) 0.49mH

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) 63cc

Mechanical Compliance of Suspension (Cms) 0.37mm/N

BL Product (BL) 9.6 T-M Diaphram Mass inc.

Airload (Mms) 16 grams

Efficiency Bandwidth Product (EBP) 156

Maximum Linear Excursion (Xmax) 3.0mm

Surface Area of Cone (Sd) 210.0 cm2

Maximum Mechanical Limit (Xlim) 7.4mm

Mounting Information:

Recommended Enclosure

Sealed 5.7-9.9 liters/0.2-0.35 cu.ft.

Vented 8.5-19 liters/0.3-0.67 cu.ft.

Overall Diameter 8.24″, 209.2mm

Baffle Hole Diameter 7.13″, 181mm

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 3.5″, 89mm

Net Weight 6.6 lbs., 3 kg

Shipping Weight 7.4 lbs., 3.4 kg

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

Dustcap Composition Solid composition paper dust cap