EMINENCE EB8CXA Beta-8CX 8” 250 W 8 Ohm SPEAKER

Beta-8CX American Standard Series

Recommended for professional audio mid-range reproduction in sealed enclosures. Also suitable for mid-bass or floor monitor applications in vented 2-way cabinets.

• Nominal Basket Diameter 8“, 203.2 mm
• Nominal Impedance 8 ohms
• Power Rating 250 W
• Resonance 54 Hz
• Usable Frequency Range 88 Hz - 20 kHz
• Sensitivity 92
• Magnet Weight 38 oz.
• Gap Height 0.312“, 7.92 mm
• Voice Coil Diameter 2“, 50.8 mm

• Resonant Frequency (fs) 54 Hz
• DC Resistance (Re) 5.53
• Coil Inductance (Le) 0.96 mH
• Mechanical Q (Qms) 7.67
• Electromagnetic Q (Qes) 0.31
• Total Q (Qts) 0.30
• Compliance Equivalent Volume 34.9 liters (Vas) 34.9 liters / 1.2 cu. ft.
• Peak Diaphragm Displacement Volume 66 cc
• Mechanical Compliance of Suspension 0.59 mm/N
• BL Product (BL) 9.5 T-M
• Diaphragm Mass inc. Airload (Mms) 15 grams
• Efficiency Bandwidth Product (EBP) 174
• Maximum Linear Excursion (Xmax) 3.2 mm
• Surface Area of Cone (Sd) 205.9 cm²
• Maximum Mechanical Limit (Xlim) 6.9 mm

• Recommended Enclosure Volume
• Sealed 5.7-8.5 liters/0.2-0.3 cu.ft.
• Vented 8.5-17 liters/0.3-0.6 cu.ft.
• Overall Diameter 8.24“, 209.2 mm
• Baffle Hole Diameter 7.13“, 181 mm
• Front Sealing Gasket fitted as standard
• Rear Sealing Gasket fitted as standard
• Mounting Holes Diameter 0.22“, 5.5 mm
• Mounting Holes B.C.D. 7.75“, 196.9 mm
• Depth 3.5“, 89 mm

• Copper voice coil
• Polyimide former
• Ferrite magnet
• Extended core
• Pressed steel basket
• Paper Cone
• Cloth cone edge
• Screened cloth dust cap

• 96 dB Sensitivity 1 W / 1 m
• 200 W Power Handling
• 2" Aluminium Sandwich Voice Coil
• Double treated Cone for Water Protection
• Triple Aluminum demodulating Rings for ultra low Distortion
• Optimal for compact 2-way Systems

Nominal Specifications

    * Nominal Diameter 8“, 200 mm
    * Overall Diameter 8.81/8.18“, 223.8/203.9 mm
    * Bolt Circle Diameter 8.27“, 210 mm
    * Baffle Cutout Diameter 7.24“, 184 mm
    * Depth 4.59“, 116.7 mm
    * Flange and Gasket Thickness 0.42“, 10.7 mm


Electrical Specifications

    * Minimum Impedance 6.4 Ohm
    * Nominal Impedance 8 Ohm
    * Nominal Power Handling*** 200 W
    * Maximum Power Handling**** 400 W
    * Sensitivity (1W/1m) 95 dB
    * Frequency Range 60 - 5000 Hz
    * Voice Coil Diameter 2“, 52 mm
    * Winding Material Aluminium
    * Former Material Glass Fiber
    * Winding Depth 0.76“, 19.3 mm
    * Magnetic Gap Depth 0.35“, 9 mm
    * Flux Density 1.15 T


THIELE & SMALL Parameters

    * Resonant Frequency (fs) 58 Hz
    * DC Resistance (Re) 5.1 Ohm
    * BL Product (BL) 11.3 N/A
    * Diaphragm Mass inc. Airload (Mms) 24 grams
    * Mechanical Compliance of Suspension (Cms) 0.31 mm/N
    * Rms 0.93 Kg/s
    * Electromagnetic Q (Qes) 0.34
    * Mechanical Q (Qms) 9.4
    * Total Q (Qts) 0.35
    * Compliance Equivalent Volume (Vas) 0.62 ft³, 17.6 dm³
    * Surface Area of Cone (Sd) 30.8“², 199 cm²
    * Maximum Linear Excursion (Xmax)* 8.15 mm
    * Xdamage** 13.5 mm
    * Coil Inductance (Le) 0.55 mH
    * Diaphragm mass (Mmd) 22 g
    * Eta Zero 1.02 %

Notes

    * *Xmax = [(winding depth - magnetic gap depth) / 2] + (magnetic gap depth / 3)
    * **Maximum excursion before permanent damage
    * ***2 Hours Test According to AES 2-1984 Rev. 2003
    * ****Maximum power is defined as 3dB greater than nominal power

Nominal Specifications

• Nominal Diameter 8“, 200 mm
• Overall Diameter 8.81/8.18“, 223.7/207.9 mm
• Bolt Circle Diameter 8.27“, 210 mm
• Baffle Cutout Diameter 7.20“, 183 mm
• Depth 3.88“, 98.5 mm
• Flange and Gasket Thickness 0.43“, 10.8 mm

• Minimum Impedance 7 Ohm
• Nominal Impedance 8 Ohm
• Nominal Power Handling*** 200 W
• Maximum Power Handling**** 400 W
• Sensitivity (1W/1m) 95 dB
• Frequency Range 70 - 5000 Hz
• Voice Coil Diameter 2“, 52 mm
• Winding Material Aluminium
• Former Material Glass Fiber
• Winding Depth 0.65“, 16.5 mm
• Magnetic Gap Depth 0.31“, 8 mm
• Flux Density 1.15 T

• Resonant Frequency (fs) 65 Hz
• DC Resistance (Re) 5.7 Ohm
• BL Product (BL) 13.5 N/A
• Diaphragm Mass inc. Airload (Mms) 25,3 grams
• Mechanical Compliance of Suspension (Cms) 0.24 mm/N
• Rms 3.38 Kg/s
• Electromagnetic Q (Qes) 0.32
• Mechanical Q (Qms) 3.1
• Total Q (Qts) 0.29
• Compliance Equivalent Volume (Vas) 0.46 ft³, 12.9 dm³
• Surface Area of Cone (Sd) 30.38“², 196 cm²
• Maximum Linear Excursion (Xmax)* 6.92 mm
• Xdamage** 15.7 mm
• Coil Inductance (Le) 0.46 mH
• Diaphragm mass (Mmd) 23.7 g
• Eta Zero 1.06 %

Notes

• *Xmax = [(winding depth - magnetic gap depth) / 2] + (magnetic gap depth / 3)
• **Maximum excursion before permanent damage
• ***2 Hours Test According to AES 2-1984 Rev. 2003
• ****Maximum power is defined as 3dB greater than nominal power

• 2'' voice coil Kapton former
• Ventilated magnet and voice coil to reduce power compression
• 94.6 dB sensitivity

Manual/Εγχειρίδιο