Eminence Alpha 12 Speaker (150 Watts, 12")

Nominal Basket Diameter- 12 in., 304.8mm

Impedance- 8 ohm

Power Rating- 150W rms

Music Program- 300W

Resonance- 49Hz

Usable Frequency Range- 45Hz - 5kHz

Average Sensitivity- 1W @ 1m 98 dB

Magnet Weight- 20oz.

Gap Height- 0.25", 6.35mm

Voice Coil Diameter- 1.5", 38.1mm

Resonant Frequency- 49Hz

Impedance (RE)- 6.30 ohm

Coil Inductance (Le)- 0.79mH

Electromagnetic Q (Qes)- 0.88

Mechanical Q (Qms)- 6.53

Total Q (Qts)- 0.77

Compliance Equivalent Volume (Vas)- 121.5 liters (4.29 cu.ft.)

Peak Diaphragm Displacement- Volume (Vd) 125cc

Mechanical Compliance of suspension (Cms)- 0.32mm/N

BL Product (BL)- 8.5 T-M

Diaphragm Mass inc. Airload (Mms)- 33 grams

Equiv. Resistance of mechanical suspension loss (Rms)- 1.54N*sec/M

Efficiency Bandwidth Product (EBP)- 56

Voice Coil Overhang (Xmax)- 2.4mm

Surface Area of Cone (Sd)- 519.5cm2

Impedance at Resonance (Zmax)- 53 ohm

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: 6 lbs
Shipping Dimensions: 13 x 13 x 7 in
Manufacturer Part Number (MPN): ALPHA12A
If you have additional warranty questions, please contact the manufacturer at 502-845-5622
(18 ratings)
Submitted June 20, 2011 by a customer from nycap.rr.com
"Alpha 12 - Close your eyes and listen!"
Verified Customer zZounds has verified that this reviewer made a purchase from us.
Very pleased! I am going to get another. I bought this 8 ohm driver to replace a 4 ohm one in an old Peavey powered monitor system. I was shocked to find that, although it was a bit quieter, the quality of the sound was better. I still had tons of headroom. Also, the speaker I removed weighed about 10 pounds more. So... The system sounds better, is lighter and it only cost a few bucks. Excellent packaging and the speaker looks like it will last. I could not be happier. Did I say that?
Sound
For an inexpensive speaker, it worked perfectly!
Features
It's a speaker... How many features could itnhave?
Ease of Use
Bolt, plug and play. Perfect!
Quality
Again, for an inexpensive driver, I was surprised in a very positive way.
Value
Excellent quality and sound.
Manufacturer Support
None required so far.
The Wow Factor
Anyone that buys a speaker for how it looks deserves what they get. It looks and sounds like a good, inexpensive driver.
Musical Background:
Active lounge lizard
Musical Style:
Everything except rap... Sorry I'm too old.
14 of 16 people (88%) people found this review helpful. Did you?
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