Eminence BETA-8CX User Manual

Specification

dBSPL

Ohm

Nominal Basket Diameter
Nominal Impedance*
Power Rating**
Watts
Music Program
Resonance
Usable Frequency Range***
Sensitivity
Magnet Weight
Gap Height
Voice Coil Diameter

Thiele & Small Parameters

Resonant Frequency (fs)
DC Resistance (Re)
Coil Inductance (Le)
Mechanical Q (Qms)
Electromagnetic Q (Qes)
Total Q (Qts)
Compliance Equivalent Volume (Vas)
Peak Diaphragm Displacement Volume (Vd)
Mechanical Compliance of Suspension (Cms)
BL Product (BL)
Diaphragm Mass inc. Airload (Mms)

Efciency Bandwidth Product (EBP)

Maximum Linear Excursion (Xmax)
Surface Area of Cone (Sd)
Maximum Mechanical Limit (Xlim)

Mounting Information

Recommended Enclosure Volume
Sealed
Vented
Overall Diameter

Bafe Hole Diameter

Front Sealing Gasket
Rear Sealing Gasket
Mounting Holes Diameter
Mounting Holes B.C.D.
Depth
Net Weight
Shipping Weight

3-10 liters/0.1-0.4 cu.ft.
8-21 liters/0.3-0.8 cu.ft.

Materials of Construction

Copper voice coil
Kapton former
Ferrite magnet
Tapered Coax
Pressed steel basket
Treated Paper Cone
Sealed Cloth cone edge
Zurette dust cap

8”, 203.20mm

8 ohms

250W
500W

63Hz

74Hz-3kHz

93.30

38 oz.

0.31”, 7.94mm

2”, 50.80mm

63Hz

5.60

0.85mH

8.82

0.34

0.33

19.99 liters / 0.71 cu.ft.

67.20cc

0.32mm/N

11.10 T-M

18.30 grams

193.10

3.20mm

210 cm2

6.90mm

8.24”, 209.30mm

7.13”, 181.10mm

Fitted as standard
Fitted as standard

0.22”, 5.60mm

7.75”, 196.90mm

3.50”, 88.90mm

6.80 lbs., 3.10 kg

7.50 lbs., 3.40 kg

BETA-8CX American Standard Series

Recommended for professional audio mid-range reproduction in sealed enclosures. Also suitable for mid-bass or oor

monitor applications in vented 2-way cabinets.

100

95

90

85

80

75

70

65

60

20 Hz50100 200500 1K 2K 5K 10K20K

Please inquire about alternative impedances.

*

Multiple units exceed published rating evaluated under EIA 426A noise source and test standard while in a free-air, non-temperature controlled environment.

**

The average output across the usable frequency range when applying 1W/1M into the nominal impedance. Ie: 2.83V/8ohms, 4V/16ohms.

***

Eminence response curves are measured under the following conditions: All speakers are tested at 1w/1m using a variety of test set-ups for the appropriate impedance | LMS using 0.25” supplied microphone (software

calibrated) mounted 1m from wall/bafe | 2ft. X 2ft. bafe is built into the wall with the speaker mounted ush against a steel ring for minimum diffraction | Haer P1500 Trans-Nova amplier | 2700 cu.ft. chamber with

berglass on all six surfaces (three with custom-made wedges)

200

100
90
80

70

60

50

40

30

20

10
9
8

7

6