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Favorite Full Range Coaxial 12 inch driver?

theaxeeffect

New here
I am considering putting coaxial drivers in a couple of guitar cabs with the new seymour duncan power stage 700 power amp(when it comes out).
Any suggestions for speakers? I want full range so the IR's sound detailed, but I don't necessarily want tweeters, crossovers etc.
What's your favorite?
 

maxdown

Fractal Fanatic
A coaxial setup consists of 2 drivers in one speaker basket - so a passive crossover is definitely going to be required.

The common 12 inch driver for DIY would seem to be the Eminence Beta-12CX along with the Eminence ASD1001 1" HF Titanium Horn Driver screwed in the back - then the PXB2:2K5CX (2.5 kHz crossover point) seems the popular choice for a passive crossover. There's ways to further tune the crossover I think - but I'm not the one to ask about that sort of stuff.
 
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Nathan M.

Regular
You could also consider the Celestion K12H-100TC and the K12H-200TC which is a twin cone that does not require a high frequency driver and crossover board.
 

maxdown

Fractal Fanatic
Yup .... although with a max freq of 10 kHz I'd call those Celestions more 'extended' range than full range ..... but if you're high cutting your IRs at around 7500 Hz then they could do the job well enough.

I have a similar range 12 inch in my FRFR cabs - but with a tweeter too to take the range up to 16 kHz (although I can switch the tweeter out if desired). However, they do seem to sound a bit better with the tweeter engaged even with the hi cut in the Cab block.
 

theaxeeffect

New here
Yes, I need that extra frequency response as I use an acoustic guitar as well. I roll the cabs off at about 7K, but need the range up to 16-20 to hear the high end of the acoustic sounds. Just looking for a twin cone that can handle it.
 

stratos

Inspired
Seismic has an inexpensive selection of CAD's and passive networks. Depends on your budget.
A 1RU, DBX 223, active crossover can work better than a passive. Used are under 100 bux.
High order, passives can get a little pricey.
 

Shenks

Veteran
Putting any co-axial or full range speaker in a guitar cab is not necessarily going to give you a good resulting tone. It may happen by chance but there are so many factors in play here that a certain amount of research should be considered... or possibly a great deal of research.

It is something I considered myself, but the more I looked into it, the more I realised it wasn't as simple as I first thought.

Good luck though, and keep us all updated.
 

Nathan M.

Regular
Yes, as Shenks stated there is quite a difference between guitar cabs and FRFR cabs with respect to their acoustic function. Guitar cabs, for the most part, are not built to provide bass extension or extended high frequencies. FRFR cabs are designed quite differently and all of their components are tuned to work together, or at least should be. Thiele Small parameters, which are used in cabinet design, have little to no relevance in open back guitar cab design and are of limited use in guitar cab design in general but quite the contrary in FRFR cabs.

A good example are the Mission Engineering Gemini 1X12 cabs (no affiliation). The cabs are much larger than most 1X12 FRFR cabs that you typically see and would be difficult to tune for some coax drivers, but Mission uses active crossovers and have tuned the system to behave more like a guitar cabinet than a straight FRFR cabinet. If they were going for a true FRFR cab, the dimensions would be quite different.

So, in a nutshell, converting a guitar cab to a FRFR cab is a crapshoot at best.
 
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