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Eminence Beta-8CX 8" Coaxial Driver
What would be the optimum box tuning frequency for this driver when used in the Dayton MTM 1.0 cu/ft box?
Whether you are using one or two drivers, all you will need is a 3" hole for a tuning frequency of 67 Hz.
Date published: 2015-09-10
What would be the optimum box tuning frequency for this driver in the Dayton audio MTM 1.0 premade enclosure?
That volume is quite a bit larger than optimal. in order to tune high enough I would recommend two 3" diameter ports that are 2" long, which tunes to about 70 Hz. If you can add mass to the inside of the enclosure to take up about half of the volume, one port at the same diameter and length will work a little better.
Date published: 2015-09-18
This is NOT a COAXIAL speaker. (look at teh photos and specs)
This is a coaxial driver. Since it does not include a compression driver, the specs are only for the woofer itself.
Date published: 2015-11-04
Is there a 16 Ohm version of this speaker available ?
Unfortunately no. The only 16 ohm 8" coax we have available is from B&C below.http://www.parts-express.com/bc-8cxn51-16-8-professional-neodymium-coaxial-speaker-100-x-100-16-ohm--294-5765
Date published: 2015-01-19
Can these be used as in-wall speakers for LCR withe the denovo dna-150? If so how deep would the cavity need to be?
Yes these will work with that compression driver for an in wall application, but they will not play much lower than about 80-100 Hz if used without an enclosure. The total depth of the speaker will be 5" to 5-1/2" with the compression driver.
Date published: 2014-08-21
The cross sectional views of this speaker found in the "Using coaxial speakers for DIY..." article imply that if no HF driver is mounted on the back an open port exists through the voice coil. Is a plug provided if this driver is to be used without HF?
There is no plug provided although the driver is shipped with a thick tape that covers the threaded hole. If you do not plan on using this as a coax, you might want to consider using the standard non CX Beta model instead.
Date published: 2014-07-11