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Old 14th January 2013, 03:47 AM   #1
rongon is offline rongon  United States
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Default High-efficiency, wide-range midrange?

Is there such a thing as a driver with about 95dB/1W/1m sensitivity, that can be run from about 300Hz to 8kHz or higher?

Maybe a high efficiency "full-range" that doesn't make bass, that could be used with a supertweeter?

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Old 14th January 2013, 03:53 AM   #2
cotdt is offline cotdt  United States
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I don't know about playing up to 8kHz, but there are lots of drivers that can do 95+ dB/W 300Hz to 4kHz. Even 98 dB/W is possible.
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Old 14th January 2013, 04:16 AM   #3
rongon is offline rongon  United States
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Hmmm... Well, my interest is in getting the crossovers as far away from the voice range as possible.

Of the type that might be good for 300Hz to 4kHz with 95dB sensitivity at 8 ohms, what reasonably priced models can be recommended? Would they all be horns? Any cones?

What if the efficiency drops to only 92dB/1W/1m? I'm not so much concerned with massive efficiency as much as a smooth response, and a smooth impedance curve. But, I don't want to get into the 86dB/1W/1m range of domes, etc.

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Old 14th January 2013, 04:30 AM   #4
cotdt is offline cotdt  United States
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There is the PHL 1120, also drivers from 18sound, B&C, B&W, etc.

If you only need 92dB/W, then there's the Markaudio Alpair 12P. It is a fullrange driver and tweeter is completely optional. You can have the woofers come in at 100Hz or so.

The voice range starts at more like 150Hz, but there is content even lower than that. But regardless, I like your idea.
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Old 14th January 2013, 06:43 AM   #5
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You may also look at the Audax Pr170mo. It is listed at 100db/w but if you realy look
at that frequency responce curve down at 300hz it's realy about 95 db/w with a slight
rise in frequency responce. But watch out for the x max if used as low as 300 hz.
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Old 14th January 2013, 08:05 AM   #6
NiToNi is offline NiToNi  United Kingdom
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Tang Band W8-1772 or W8-1808 depending on application.
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Old 14th January 2013, 09:39 AM   #7
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Philips 9710 does from 40hz up to 19khz with abut 95db of efficiency. cross it anywhere within the range and here you go
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Old 14th January 2013, 09:50 AM   #8
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Audio Nirvana has a number of drivers to suit - and there's the Scan 18W drivers, too.

Quite a few, really.
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Old 14th January 2013, 12:08 PM   #9
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Look at 6-10" PA drivers. You'll need a more conventional compression driver to keep up, but methinks you'll get "proper" dynamics (which is what you're after, right? )
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Old 14th January 2013, 02:04 PM   #10
IG81 is offline IG81  Canada
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Quote:
Originally Posted by esl-fan View Post
Philips 9710 does from 40hz up to 19khz with abut 95db of efficiency. cross it anywhere within the range and here you go
There is peaking at ~3kHz and some plateau passed that where output is around 100dB/1W. A more "real-world" rating would be ~93dB IMO, unless used in a Karlson to give some lift in the mid-bass, then you actually have ~97dB down to ~70Hz.

Might be easier to land a new production driver though. Have a look at the Fostex FF165WK or FF225WK, they are whizzer-less and have a good midragne IMO (225). The 225 runs out of steam passed 8kHz though. Sensitivity is a bit lower than what you spec'ed in the OP, but it might still work depending on what your bass driver is and clever enclosure design, namely baffle-step.

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