Eminence Beta-10CX 10" Coaxial Driver

Brand:| Model: Beta-10CX
Eminence's Beta-10CX is a coaxial solution to the challenge of achieving efficient, extended range output from limited baffle space.
  • Kapton coil former
  • Polyamide-imide coated copper voice coil
  • Ferrite magnet
  • Extended pole piece
  • Pressed steel basket
  • Paper cone
  • Cloth accordian surround
Part # 
Weight: 7.3 lbs.  
Your Price
Part # 290-502
Qty:  EA
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Product Details

Eminence Beta-10CX 10" Coaxial Driver

The Eminence Beta-10CX 10" Coaxial Driver is recommended for professional audio midrange reproduction in sealed loudspeaker enclosures. Also suitable for midbass or floor monitor applications in vented 2-way speaker cabinets. The Beta-10CX's coaxial design facilitates use of an HF driver to extend frequency response. Standard 1-3/8"-18 TPI threaded insert for HF horn driver (sold separately). Made in the USA. 7-year manufacturer's warranty!

Featured in Eminence's "Using coaxial products for DIY monitors and home hi-fi applications" article.

Product Specifications
  • Nominal Diameter10"
  • Power Handling (RMS)250 Watts
  • Power Handling (max)500 Watts
  • Impedance8 ohms
  • Frequency Response58 to 3,000 Hz
  • Sensitivity95.1 dB 1W/1m
  • Voice Coil Diameter2"
  • Magnet Weight38 oz.
Thiele-Small Parameters
  • Resonant Frequency (Fs)48 Hz
  • DC Resistance (Re)5.53 ohms
  • Voice Coil Inductance (Le)0.75 mH
  • Mechanical Q (Qms)5.21
  • Electromagnetic Q (Qes)0.43
  • Total Q (Qts)0.39
  • Compliance Equivalent Volume (Vas)2.3 ft.³
  • Mechanical Compliance of Suspension (Cms)0.39 mm/N
  • BL Product (BL)10.4 Tm
  • Diaphragm Mass Inc. Airload (Mms)27g
  • Maximum Linear Excursion (Xmax)5 mm
  • Surface Area of Cone (Sd)344.9 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 Diameter10.08"
  • Baffle Cutout Diameter9.18"
  • Depth3.98"
  • # Mounting Holes8
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume0.56 ft.³
  • Sealed F3107 Hz
  • Vented Volume1.62 ft.³
  • Vented F360 Hz
  • * Enclosure volume/F3s based on BassBox "optimum" calculations-
Optimum Cabinet Size *
  • Sealed Volume0.56 ft.³
  • Sealed F3107 Hz
  • Vented Volume1.62 ft.³
  • Vented F360 Hz
  • * Enclosure volume/F3s based on BassBox "optimum" calculations-
Eminence Beta-10CX 10" Coaxial Driver
  • BrandEminence Speaker
  • ModelBeta-10CX
  • Part Number290-502
  • UPC876358000104
  • Product CategoryCoaxial Full-Range Speakers
  • Unit of MeasureEA
  • Product Rating
    (4 Reviews)
  • Weight7.3 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-10CX 10" Coaxial Driver
Eminence Beta-10CX 10" Coaxial Driver is rated 5.0 out of 5 by 4.
Rated 5 out of 5 by from Completely Satisfied!!!I love this speaker! It has great tone when coupled with an APT-50. In fact, the only complaint I had is that eventhough it is called a coaxial speaker, i had to piece it all together by purchasing the tweeter and crossover separately.Once I got it all together though...It is Killin'! I built a 1x10 bass guitar cabinet using this woofer, the apt-50, and the pxb2:3k5 crossover. I put all of this in, get this, a car audio cabinet that happened to be vented and had approximately the same dimensions that I wanted in a custom cabinet.Long Story short, with everything together IT ROCKS!!!
Date published: 2013-06-14
Rated 5 out of 5 by from A GREAT SPEAKERI have a pair of monitors which came with 75 watt speakers and a very small tweeter. I'm a lead singer and I needed more hi-end.I couldn't find a tweeter small enough to fit the cabinets,yet hi enough to fit my personal needs,therefore I purchased the 10cx model to give me the room I needed to add a REAL hi-frequency driver.Now I have a small 250 watt powerhouse.
Date published: 2013-09-09
Rated 5 out of 5 by from JAMSI have four of these in my room two in each speaker and it is so loud i knock pictures off the wall and other glass objects.
Date published: 2013-09-09
Rated 5 out of 5 by from best product everit sounds great even without the super tweeter. i have matched up with A Denon reciver and it sounds great.
Date published: 2013-09-09

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-10CX 10" Coaxial Driver

Is this a true coaxial speaker?

What I mean is there 2 separate drivers or just a whizzer tweeter like on older car speakers?
Asked by: Brandonmmmmm
There is a compression driver stuck to the back of the magnet. The sound travels through the dust cap.
Answered by: A.M. Productions
Date published: 2013-06-20

What would be the minimal and also optimal sealed enclosure size? What if ported and what tube?

I am looking to build a custom monitor for 100 Hz and up. I need a very natural and smooth response. The APT-50 Super Tweeter would be added. It would be bi-amped with an electronic crossover plus amp. This would be for a permanently installed stage monitoring situation; acoustic instruments and vocals mostly. Hence, I don't need much bottom end.
Asked by: Toninho
A sealed enclosure of .98 cubic feet would give you a Q of .7 and a F3 of 89hz with a linear taper from -6dB@ 67hz down.Reducing sealed enclosure to a minimum of 0.6 cubic feet keeps you approximately linear above 110hz and gives you an F3 in the mid 90s. Smaller than that enclosure size would not be advised, Q is already in the high 80's here.If you choose to go with a vented enclosure, 2.0 cubic feet with a 50hz port tuning frequency keeps you very linear down to 60hz and keeps phase coherent (identical to "sealed" phase) down to well below 80hz. F3 is right at 50hz and at 40hz (low E on a four string bass) you're at -9dB. Not bad. If you do two, 3" diameter vents 4.95" deep with at least a 1/16" radius roundover at each end, you'll be in good shape.
Answered by: edegaston
Date published: 2012-07-18

Will the ASD1001 work?

I see that it is common to use the APT-50 HF driver with the 10cx, though I can't seem to find the source of this recommendation. Is there any issue with using the (better?) ASD1001 instead? If not, what would the recommended crossover be for that setup? Thanks!
Asked by: Stanwalters
That is a very good match. The ASD1001 is very efficient and LOUD. Great high end as well. Some drivers are rated above 10K but that is with a fast roll off. This one is a true tweeter driver. Crossover is about 3K to 3.5K. This point, matches the woofer well. A great value as well.
Answered by: Joe from San Francisco
Date published: 2013-09-11

Removed from the APT 50 tweeter, what is the highest usable frequency of the 10CX?

Asked by: dhack
Figure 3100hz on the upper end max. If you are crossing it over, do so around 2K at 6db/oct. You can go up higher but will want a steeper slope to avoid beaming and anomolies in the response curve.
Answered by: MarkAJH
Date published: 2013-09-30

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