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Eminence Beta 12A2 Speaker (250 Watts, 12")

Ideal for a woofer or bass guitar amp, this 12-inch speaker from Eminence features a 43Hz-3.8kHz frequency range and 500-watt music program power. (29) Read 3 reviews for this product | Rate and review this product
Ships to: Can ship to United States
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Product Description

Performance optimized for sound reinforcement systems. Also suitable for lead and bass guitar, keyboards, guitar combos, club music systems, and stage monitors.

zZounds is an authorized dealer of Eminence products.
Specification:
Nominal Basket Diameter: 12 in., 304.8mm

Nominal Impedance: 8 ohms

Power Rating: Watts 250W

Music Program: 500W

Resonance: 47Hz

Usable Frequency Range: 43Hz-3.8kHz

Sensitivity***: 98

Magnet Weight: 38 oz.

Gap Height: 0.312 in., 7.92mm

Voice Coil Diameter: 2 in., 50.8mm

Thiele & Small Parameters
Resonant Frequency (fs): 47Hz

DC Resistance (Re): 5.0

Coil Inductance (Le): 0.64mH

Mechanical Q (Qms): 6.00

Electromagnetic Q (Qes): 0.50

Total Q (Qts): 0.46

Compliance Equivalent Volume (Vas): 120.1 liters / 4.2 cu. ft.

Peak Diaphragm Displacement Volume (Vd): 237cc

Mechanical Compliance of Suspension (Cms): 0.29mm/N

BL Product (BL): 10.8 T-M

Diaphram Mass inc. Airload (Mms): 40 grams

Efficiency Bandwidth Product (EBP): 94

Maximum Linear Excursion (Xmax): 4.4mm

Surface Area of Cone (Sd): 538.9 cm2

Maximum Mechanical Limit (Xlim): 11mm

Mounting Information
Recommended Enclosure:
- Sealed: 25.5-35.4 liters, 0.9-1.25 cu.ft.
- Vented: 36.8-139 liters/1.3-4.9 cu.ft.

Overall Diameter: 12.03 in., 305.5mm

Baffle Hole Diameter: 10.95 in., 278.1mm

Front Sealing Gasket: fitted as standard

Rear Sealing Gasket: fitted as standard

Mounting Holes Diameter: 0.25 in., 6.4mm

Mounting Holes B.C. D.: 11.59 in., 294.3mm

Depth: 4.57 in., 116mm

Net Weight: 7.5 lbs., 3.4 kg

Shipping Weigh: 9.7 lbs., 4.4 kg

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

** 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/baffle | 2ft. X 2ft. baffle is built into the wall with the speaker mounted flush against a steel ring for minimum diffraction | Hafler P1500 Trans-Nova amplifier | 2700 cu.ft. chamber with fiberglass on all six surfaces (three with custom-made wedges).

**** BETA 8CX, 10CX, 12CX and ACOUSTINATOR(TM) CX2008 are coaxial speakers with tweeter sold separately. Published Usable Frequency response contingent upon use of APT 50 HF Driver.

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
Shipping Weight: 10 lbs
Shipping Dimensions: 18 x 17 x 7 in
Customer Reviews
4.5 out of 5 (29 ratings) Rate and Review This Product
zZounds has verified that this customer bought this product from us. "Bigfoot Lives!!!"
Sound: Through a local ad I picked up a SWR Bigfoot 2x12 that was kind of beat up but was structurally sound for $100.00 and when I got it home I quickly found out why it was so inexpensive! The previous owner had replaced the Bag End speakers with not just guitar speakers but CHEAP guitar speakers!! I'd used a friends SWR Bigfoot at rehearsals before so I knew that it was a good cabinet and worth the money I paid alone so i wasn't too upset. I wanted to bring it back to the original specs (500 watts/4 ohms) and found that the Emminence Betas would do just that so I picked up two and couldn't be happier. I'm no audiophile but to my ears they sound great. Nice bottom end with plenty of thrust. Please keep in mind that I play mostly classic rock and don't slap much so I really haven't pushed the higher end to it's limits but again, in my opinion, the clarity is excellent. I could have chosen more expensive , higher wattage speakers but my 350 watt Ampeg head would not have been able to drive them efficiently. For me their a 10. Feature: The only features I was concerned about here were the specs and being sure that they were a good match for my Ampeg B2R. Mission accomplished. Ease of Use: This was the first time I'd ever changed speakers in a cabinet and the only challenge I had was due an issue with the cabinet. Very easy installation......even for me. Quality: Emminence appears to have a great reputation and the speakers themselves look to be of excellent quality. I haven't had them long but as long as I don't abuse them I'm confident they will last. Value: Not only did these speakers return the cab to it's original specs, but they were also among the most affordable 12" speakers that I was able to find. Great value!! Overall: Overall.... a great purchase. I now have a great sounding SWR cab and have shelled out less than $300.00 dollars for the whole project. Zzounds had pretty much the same price as other retailers but the free shipping sealed the deal for me and I was very surprised when I got e-mails for both order confirmation and confirmation that they had shipped on the same day!! Thank you Zzounds!!
Style of Music: Classic/Progressive Rock
5 of 6 people (83.33%) found this review helpful. Did you?
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zZounds has verified that this customer bought this product from us. "great speaker for price"
Overall: replaced a 12 in a top namebrand cabinet and this out performed it
Style of Music: all
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Return Exception This item must be exchanged directly through the manufacturer if it is found to be defective, and can only be returned to us if it is unopened. details
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When you checkout, just click the Play as you Pay checkbox to indicate which installment plan you wish to use.

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