Using 12" guitar element as high efficiency midrange?

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Yes, it's indeed a 'problem' in such a distance.

I know this from my previous setup -- Oris 150 as mid horn + another tweeter horn. As the midhorn is 30" in diameter, and the tweeter horn is another several inches, so the c-c distance might approaching 20". The xover points I was playing were spreaded from 3k to 10kHz at those days... That's a huge separation for that frequency range.

I don't have thorough skills and equipment for precise measurements. By ears, the comb filtering does not bother me very much. I can hear the differences of standing and seated positions. And I aim for the seated one of course. That's OK.

I know I can't grab everything, so I take dynamics, tone correctness, textures as the top priorities. Imaging, 'sound field'... etc would be way down on the list.

After I dismentled the system based on Oris 150, I used 8" mid on OB + 8" HF WG for mid-high. That was a clear step-up in imaging. However I miss the dynamics so much more. That's why you read the 12" midrange story here....

When I changed the 8" mid to this 12" one, I did lose some of the imaging quality. But I can live with that and am very happy with the dynamics gain with this bigger cone. Well, that's for me. :)

Ideally, a bigger 'tweeter' which can play down to around 1kHz must be good. That has been one of my 'future' plans....
 
Thanks for your concern, but sorry, not yet, busy on other stuff....

On the other hand, actually I'm getting used to the sound as is. Not bad at all, really :D And it does not need any EQ now. I brought back some "life" by tuning the xover -- pulling up a couple of dB on the tweeter -- and it's working very well.

Will update here if any progress.:)
 
Celestion Heritage Series G12H(55) looks interesting.

Has resonance at 55 Hz which is lower than usual for 12" guitar driver.

High sensitivity, too.

Crossing below 2 kHz could potentially make a great midrange.
 

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I just tried the 10" eminence ragin cajun as a mid between 400 and 1300hz. Sounds much more open and transparent than my high sensitivity low mass 12" PA driver in the same range...

Can someone shed some light as to why? The 10" has nasty looking csd's compared to the PA driver yet it sounds smoother and cleaner. I don't understand.
 
I just tried the 10" eminence ragin cajun as a mid between 400 and 1300hz. Sounds much more open and transparent than my high sensitivity low mass 12" PA driver in the same range...

Can someone shed some light as to why? The 10" has nasty looking csd's compared to the PA driver yet it sounds smoother and cleaner. I don't understand.


Hi,

What is the model of the PA driver you compare with ?

Explanation... I would also like to find out. Maybe we can start out by comparing measurements of the two at first ?


.
 
On a side note, I've noticed several well regarded mid-woofers have a similar purple tint as seen on the ragin cajun.

Those 8" cones look exactly the same to me...
 

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Can someone shed some light as to why? The 10" has nasty looking csd's compared to the PA driver yet it sounds smoother and cleaner. I don't understand.

Would it be, the cone breakup is all over the place, so the driver is acting like a bending wave device, or something like that. :D

Just guessing.

In my experiences on DML, at first it's almost unacceptably amazing to hear sounds so crisp and lively from those humble tiny transducers and flimsy foam board.
 
Hello,

In seeking of high efficiency midrange for home hifi, how about using some of the guitar elements as midrange somewhere between 200Hz-2kHz? When crossing low enough at 1-2kHz can avoid most of the cone breakup

....

Any experience you would like to share?

- Elias

Instrument drivers are advertised with subjective buzzwordy but somewhat valid comments regarding their "coloration". Not specifically very hifi-ish. If you can find very neutral drivers, they could well do the job. The buy-out KEI/Kustom 12"s that P-E had did quite well for me in a PA, but they're down to only 16 ohm versions now. Then, PA drivers are more accurate and neutral anyway and don't cost that much. Again at P-E, look over the Peavey Pro 12 woofer. I've used them both, prefer the latter, done a lot of cross-species testing like this. I'd go hifi to instrument in a heart beat, rarely the other way. But PA to hifi, sure there's a lot of room to test around in there. My Kustom Turbo 12/Peavey Pro 12/ Trace Elliot 15/ Peavey 14T horn PA is one of the best hifi sets I've ever owned, and I've been told unsolicited it sounds more like hifi than live sound stuff by others. But it takes a golly-gee-whiz amount of power to run them efficiently and give them the headroom they need to sound like that.
 
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