Eminence Beta 15 Bass Speaker (300 Watts, 15")

Nominal Basket Diameter- 15 in., 318mm

Impedance- 8 ohm

Power Rating- 300W

Music Program- 600W

Resonance- 35Hz

Usable Frequency Range- 45Hz - 3.7kHz

Average Sensitivity- 1W @ 1m 98 dB

Magnet Weight- 34oz.

Gap Height- 0.312", 7.92mm

Voice Coil Diameter- 2", 50.8mm

Resonant Frequency- 35Hz

Impedance (RE)- 6.32 ohm

Coil Inductance (Le)- 1.10mH

Electromagnetic Q (Qes)- 0.63

Mechanical Q (Qms)- 8.10

Total Q (Qts)- 0.58

Compliance Equivalent Volume (Vas)- 334.6 liters (11.82 cu.ft.)

Peak Diaphragm Displacement Volume (Vd)- 330cc

Mechanical Compliance of suspension (Cms)- 0.35mm/N

BL Product (BL)- 11.5 TM

Diaphragm Mass inc. Airload (Mms)- 60 grams

Equiv. Resistance of mechanical suspension loss (Rms)- 1.61N*sec/M

Efficiency Bandwidth Product (EBP)- 56

Voice Coil Overhang (Xmax)- 4.0mm

Surface Area of Cone (Sd)- 823.7cm2

Impedance at Resonance (Zmax)- 88 ohm

Materials of Construction
Coil construction: Copper voice coil
Coil former: Polyimide former
Magnet composition: Ferrite magnet
Core details: Vented and extended core
Basket materials: Pressed steel basket
Cone composition: Paper cone
Cone edge composition: Cloth cone edge
Dustcap composition: Solid composition paper dust cap

Important Note

Watts: The guaranteed long term power rating throughout the usable frequency range of the speaker.

(Translation: the speaker will operate continuously at any frequency within the speakers specified frequency range when driven at this power. The "Watts" rating is similar to RMS, but is really more indicative of long term thermal capability.)

Music Program: The speaker will safely and reliably handle the varying frequencies of musical content at this power rating. The "Music Program" rating is more indicative of what you can expect in the real world with the speaker operating within the appropriate enclosure reproducing music or vocal audio program.
Dimensions and Weight in Packaging
8 Ohms
Shipping Weight: 10.5 lbs
Shipping Dimensions: 18 x 17 x 7 in
Manufacturer Part Number (MPN): BETA15A
If you have additional warranty questions, please contact the manufacturer at 502-845-5622
(28 ratings)
Submitted February 8, 2012 by Stephen M in Browns Valley, CA
"Eminence Beta 15 Inch Speaker"
Verified Customer zZounds has verified that this reviewer made a purchase from us.
These were just what I was looking for. Drop in replacement, good sound. I'm particularly impressed with zzounds prompt and free shipping. I actually received them in like two days New Jersey to Calif.
Musical Style:
rock; c & w.
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