Eminence Beta-12LTA 12" Full-Range/PA Driver

Brand:| Model: Beta-12LTA
The Eminence Beta-12LTA 12" Full-Range/PA Driver is a twin-cone model for full range output in compact PA speaker and musical instrument systems.
  • Kapton coil former
  • Polyamide-imide coated copper voice coil
  • Ferrite magnet
  • Vented pole piece
  • Pressed steel basket
  • Paper cone
  • Cloth accordian surround
Part # 
Weight: 11 lbs.  
Your Price
Part # 290-409
Qty:  EA
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Product Details

Eminence Beta-12LTA 12" Full-Range/PA Driver

The Eminence Beta-12LTA 12" Full-Range/PA Driver is a twin-cone model for full range output in compact PA speaker systems. The addition of the second cone gives extended high frequency response up to a useful 8,000 Hz. Also recommended for extended-range musical instrument systems, such as keyboards or acoustic guitar. Made in the USA. 7-year manufacturer's warranty!

Product Specifications
  • Nominal Diameter12"
  • Power Handling (RMS)225 Watts
  • Power Handling (max)450 Watts
  • Impedance8 ohms
  • Frequency Response48 to 8,000 Hz
  • Sensitivity97.7 dB 1W/1m
  • Voice Coil Diameter2"
  • Magnet Weight38 oz.
Thiele-Small Parameters
  • Resonant Frequency (Fs)45 Hz
  • DC Resistance (Re)7.37 ohms
  • Voice Coil Inductance (Le)0.83 mH
  • Mechanical Q (Qms)6.44
  • Electromagnetic Q (Qes)0.55
  • Total Q (Qts)0.51
  • Compliance Equivalent Volume (Vas)4.8 ft.³
  • Mechanical Compliance of Suspension (Cms)0.34 mm/N
  • BL Product (BL)11.7 Tm
  • Diaphragm Mass Inc. Airload (Mms)36g
  • Maximum Linear Excursion (Xmax)3.2 mm
  • Surface Area of Cone (Sd)532.4 cm²
Materials of Construction
  • Cone MaterialPaper
  • Surround MaterialCloth
  • Voice Coil Wire MaterialCopper
  • Voice Coil FormerKapton® / Polyimide
  • Basket / Frame MaterialSteel
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter12.03"
  • Baffle Cutout Diameter10.95"
  • Depth4.47"
  • # Mounting Holes8
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume2.42 ft.³
  • Sealed F376 Hz
  • Vented Volume7.72 ft.³
  • Vented F339 Hz
Eminence Beta-12LTA 12" Full-Range/PA Driver
  • BrandEminence Speaker
  • ModelBeta-12LTA
  • Part Number290-409
  • UPC876358000142
  • Product CategoryWoofers, Subwoofers & Midrange Speakers
  • Unit of MeasureEA
  • Product Rating
    (18 Reviews)
  • Weight11 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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Eminence Beta-12LTA 12" Full-Range/PA Driver
Eminence Beta-12LTA 12" Full-Range/PA Driver is rated 4.5556 out of 5 by 18.
Rated 5 out of 5 by from Superb for Jazz guitar amps!We installed this into a very small box made of Baltic Birch plywood. The baffle is 1/2" thick. The sides and back are 1/4" thick. It is a closed-back design with a removable vent cover, so it can also operate as a vented design. Despite the thin back and sides the cabinet is very rigid and resonance free thanks to trapzoidal-design, ample internal bracing and plenty of acousti-stuff. The objective was to create a lightweight but hi-fi (ish) speaker cab for electric Jazz guitar. It worked!The cab only weight 14lbs with the speaker installed.We have tried it with several different power amps: QSC GX3, EHX Magnum 44, Quilter Tone block and the Decimator stereo / mono power amp.It sounds fantastic for Jazz guitar!No matter which amp we used, this speaker reproduces both the high and low frequencies in a very musical way. Complex chords are intelligible; You can hear and identify each note!With the lower power of the EHX Mag44, this speaker's high sensitivity really helps. Even with that tiny amp, this thing sounds HUGE.With the Quilter tone-block or the venerable QSC power amp, it is AWESOME!This handles the full output power it is rated for ( 225) and then some!The low Fs and broad-range makes this sound good even for BASS guitar too! Low notes from C3 down are all clear. You can hear the difference in timbre between a C3 on the A string and the same C3 note on the E string. I attribute that to extended low-frequency response and low Fs.The specs claim it goes up to 8kHz... that is an "optimistic" spec.In our measurements, it reproduces WELL up to about 5kHz, then rapidly drops off... but that's OK for guitar!With Bartolini pickups, EMG 81s or those wonderful new Zexcoil pickups, you can hear stunning detail on every string. Other cabs in our little store sound like they have a blanket over them by comparison.This shows a little of that intentionally engineered "spike" around 2 to 3 Khz that Eminence and other makers are known for. They do that ( of course) because most people hear best in those ranges and the spike makes speakers sound louder. However, that spike is not so nasally & harsh with this speaker. The overall effect is smoother, more controllable, better-behaved TONE in all registers.For quality and value, this is a solid FIVE STAR product, especially for lightweight Jazz guitar amps. It COULD be improved though!I lament Eminence's decision to discontinue the venerable CA2010 speaker. (aluminum model with the blue cone)THAT is the only other speaker that tops this in performance.If Eminence made this with neodymium, that would lighten the weight and make this even better.If Eminence lowered the Fs below 45 Htz ( say 35 or 30) AND extended the frequency response UP to a real 8k... well, I would buy a dozen or so.As it is, this is the very best choice we have found for smooth accurate musical reproduction of CLEAN guitar tones in a simple lightweight box. Other than expensive bi-amped powered-speakers or the much-missed CA2010, no other system is better for this application.It is So close to perfect, we can't complain much. Lower Fs, wider range and neo-mag for lighter weight would make this the hottest selling speaker on Earth.Highly recommended!
Date published: 2014-05-28
Rated 5 out of 5 by from excellent value for twice the moneyI put (2) 12 inch monitors with no horns up against a pair of powered old Mackie 1530zyou couldn't hear the Mackies at allExcellent Speaker for twice the money
Date published: 2013-10-08
Rated 2 out of 5 by from Not A Good Choice for My ApplicationMy plan was to load these into a guitar 4 x 12 cabinet for use as a full-range stage monitor for a guitar modeler/pa amp setup. I ordered two speakers. One was defective, sounding as if the paper cone was separated somewheres. The other was not defective, but sounded completely dull. I compared it side/side to a 12" 120W speaker made for guitar and the guitar speaker actually had a crisper, flatter response, and more highs than this coaxial Eminence.I'm sure this speaker has its uses, but my guitar stage monitor is not one of them. BTW I've owned other Eminence designs and have been impressed.
Date published: 2013-09-13
Date published: 2013-07-03
Rated 5 out of 5 by from Big sound for open baffle speakersThese 12 inchers offer superior dynamics over smaller full rangers and with surprising detail. At 98 dbs they will play very loud on a couple of flea amp watts. I have them sitting atop Eminence Alpha H-frames and bi-amped using Dayton APA150s with active crossovers. So far I'm running them full range paralleled with P.E.'s Peavey super tweeters and a .47uf cap.
Date published: 2012-05-07
Rated 4 out of 5 by from Great SpeakersI had two leftover kitchen cabinets from a remodeling job. I got the wild idea to fill them up with 6 of these Beta 12-inch speakers hoping that the full range would be suffice. I was very pleased. I modified the cabinets so they wouldn't rattle. After some EQ adjustments the speakers sounded great with some Behringer ep4000s behind them.
Date published: 2012-02-20
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Product Q&A

Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email tech@parts-expresss.com  for a prompt reply.
Eminence Beta-12LTA 12" Full-Range/PA Driver

I have Dayton Audio PA310-12 1.6ft f3 60 xover 1.2khz 48db to beyma 385cpnd compression drivers.  Everything is active bi amped.  No matter how I cross over or how EQ I cannot get acceptable mid range.  Any thoughts on how these will work?

Asked by: sean4180

I Use a Roland JC-120 amp for my Keyboards. I know this is a guitar amp but would like to change out the 2 stock silver cone, 12" to speakers that are full spectrum of sound. I want all the highs to all the lows. Any suggestions?

Asked by: RalphJr
Please contact our tech support for more help with this question, tech@parts-express.com or 800-338-0531 x1.
Answered by: MattP
Date published: 2014-07-28

If this is the only driver going into a single-driver monitor cabinet, do I need to put some sort of bandpass filter to protect the driver?

Asked by: EAL93
Depending on how loud you need it to play, a high pass filter may be required to help prevent low frequencies from damaging the driver. It does not have to be a band pass type filter.
Answered by: MattP
Date published: 2014-02-17

What power amplifier should I use?

Looking to power two of these Eminence Beta-12s with a new power-amplifier. What is the recommended power output of the amp? Thanks!
Asked by: BSack
Any amplifier between 100-200 watts RMS will be a good match to this driver.
Answered by: MattP
Date published: 2013-03-15

Eminence Beta-12LTA 12" Full-Range/PA Driver

What enclosure would you recomend for 2 of these speakers with a closed back?regards,Win
Asked by: Winmichaels
you could just go ahead and put them in a dual subwoofer box like the part linked below, but to get the best sound, you may want to try to make your own box or boxes. it also depends on what you intend to do with these. if they are for a guitar or bass guitar, then that idea might fly, but if they are to be used in a PA system, then look into getting a blank dual 12" PA cabinet. these should still have a super tweeter in a horn for PA because they are not true full range, but for guitar an bass, it should be more than good enough.
Answered by: BigRich92
Date published: 2011-10-26

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