Eminence Beta-6A 6.5" Mid-Range Speaker, 8 Ohm

6.5" Midrange/Mid-Bass Driver, 8 Ohm, 175 Watt

The Beta-6A 6-1/2" midbass/midrange from Eminence is the evolution of the vaunted Alpha-6 driver series. With the Beta-6A, Eminence has increased the voice coil from 1.5" to 2" for increased power handling, while a strong magnet and motor system keeps the sensitivity high.

In addition to a larger diameter voice coil, Xmax has been increased to 4.5 mm and allows for lower usable frequency response. Additionally, a vented pole piece allows heat to escape for reduced power compression. The paper cone and dust cap have been treated for water-resistance, which is perfect for when the Beta-6A is used outdoors for live sound and in high SPL car audio systems.

Eminence designed the Beta-6A to work well in small sealed or vented enclosures, and in infinite baffles too. See the Manuals/Resources section for Eminence's cabinet design recommendations.

Features:

• The Alpha-6 series midbass woofer evolved
• 2" diameter voice coil for high power handling
• Over 4 mm of Xmax in addition to high sensitivity
• Perfect for use in multi-way, concert-grade loudspeakers
• Water-resistant coating for use outdoors and in cars

Specifications:

• SPECIFICATION
• Nominal Basket Diameter: 6.5", 165.1mm
• Nominal Impedance*: 8 ohms
• Power Rating**
• Watts: 175W
• Music Program: 350W
• Resonance: 122.57Hz
• Usable Frequency Range: 95Hz - 4kHz
• Sensitivity***: 94dB
• Magnet Weight: 30 oz.
• Gap Height: 0.25", 6.35mm
• Voice Coil Diameter: 2", 50.8mm
• THIELE & SMALL PARAMETERS
• Resonant Frequency (fs): 122.57Hz
• DC Resistance (Re): 5.18
• Coil Inductance (Le): 0.43mH
• Mechanical Q (Qms): 3.46
• Electromagnetic Q (Qes): 0.66
• Total Q (Qts): 0.56
• Compliance Equivalent Volume (Vas): 3.51 liters / 0.12 cu.ft.
• Peak Diaphragm Displacement Volume (Vd): 61.05cc
• Mechanical Compliance of Suspension (Cms): 0.15mm/N
• BL Product (BL): 8.13 T-M
• Diaphragm Mass Inc. Airload (MMs): 10.93 grams
• Efficiency Bandwidth Product (EBP): 185.4
• Maximum Linear Excursion (Xmax): 4.5mm
• Surface Area of Cone (Sd): 129.9 cm2
• Maximum Mechanical Limit (Xlim): 5.7mm
• MOUNTING INFORMATION
• Recommended Enclosure Volume
• Sealed: 2.38-9999. liters / 0.08-9999. cu.ft.
• Vented: 5.1-14.16 liters / 0.18-0.5 cu.ft.
• Driver Volume Displaced: 33.8 cu.in. / 0.6 liters
• Overall Diameter: 6.59", 167.39mm
• Baffle Hole Diameter: 5.65", 143.5mm
• Front Sealing Gasket: Fitted as standard
• Rear Sealing Gasket: Fitted as standard
• Mounting Holes Diameter: 0.23", 5.84mm
• Mounting Holes B.C.D.: 6.06", 153.92mm
• Depth: 2.66", 67.56mm
• Net Weight: 5.6 lbs, 2.54 kg
• Shipping Weight: 6.3 lbs, 2.86 kgs
• MATERIALS OF CONSTRUCTION
• Coil Construction: Aluminum voice coil
• Coil Former: Polyimide former
• Magnet Composition: Ferrite magnet
• Core Details: Vented and extended core
• Basket Materials: Pressed steel basket
• Cone Composition: Water resistant paper cone
• Cone Edge Composition: Treated cloth cone edge
• Dust Cap Composition: Water resistant treated paper dust cap