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Eminence Delta Pro-8A 8” Replacement Speaker

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Item#: BETA8A
UPC: 0876358000067
Usually ships in 1-3 days from Eminence
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About This Product

Eminence BETA-8A 8” American Standard Series Replacement Speaker

Eminence BETA 8A performance is optimized for midrange use between 400Hz and 4kHz in multi-way systems. Also suitable for vocal P.A., keyboards, club music systems, stage monitors and bass guitar. The Beta 8A has a 2" polyamide-imide coated two-layer 29 ga. aluminum voice coil, kapton coil former, 34 oz. magnet, vented core, paper cone with cloth edge, and a paper dust cap.

Eminence Delta Pro-8A Specifications
Nominal Basket Diameter 8", 203 mm
Nominal Impedance* 8 Ω
Power Rating**
Watts 225 W
Music Program 450 W
Resonance 69 Hz
Usable Frequency Range 100 Hz - 3 kHz
Sensitivity*** 97.8 dB
Magnet Weight 59 oz.
Gap Height 0.31", 7.9 mm
Voice Coil Diameter 2", 51 mm
Thiele & Small Parameters
Resonant Frequency (fs) 69 Hz
DC Resistance (Re) 5.4 Ω
Coil Inductance (Le) 0.82m H
Mechanical Q (Qms) 6.43
Electromagnetic Q (Qes) 0.22
Total Q (Qts) 0.22
Compliance Equivalent Volume (Vas) 18.32 liters / 0.65 cu.ft.
Peak Diaphragm Displacement Volume (Vd) 66 cc
Mechanical Compliance of Suspension (Cms) 0.28 mm/N
BL Product (BL) 14.1 T-M
Diaphragm Mass Inc. Airload (MMs) 19 grams
Efficiency Bandwidth Product (EBP) 307
Maximum Linear Excursion (Xmax) 3 mm
Surface Area of Cone (Sd) 218.2 cm2
Maximum Mechanical Limit (Xlim) 7. mm
Mounting Information
Recommended Enclosure Volume
Sealed 8-16 liters / 0.3-0.6 cu.ft.
Vented 10-16 liters / 0.4-0.6 cu.ft.
Driver Volume Displaced 0.037 cu.ft. / 1.04 liters
Overall Diameter 8.02", 203.7 mm
Baffle Hole Diameter 7.36", 186.9 mm
Front Sealing Gasket Yes
Rear Sealing Gasket Yes
Mounting Holes Diameter 0.28", 7.1mm
Mounting Holes B.C.D. 8.6", 218.4mm
Depth 3.75", 95.3 mm
Net Weight 10 lbs, 4.54 kg
Shipping Weight 11 lbs, 4.99 kgs
Materials of Construction
Coil Construction Copper voice coil
Coil Former Polyimide former
Magnet Composition Ferrite magnet
Core Details Vented and extended core
Basket Materials Die-cast aluminum basket
Cone Composition Paper cone
Cone Edge Composition Cloth cone edge
Dust Cap Composition Solid composition paper dust cap
The Box Includes:
(1) Eminence BETA-8A 8” American Standard Series Replacement Speaker