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Old 15th August 2014, 07:56 PM   #1
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Default exceptional drivers optimized for 2-5khz (1-7Khz)

Well this may be a beaten path but since 2-5khz is the most sensitive range for us humans i decide to start a speaker with this freq range and see where I could get (also some passband coverage). So lets say 1Khz to 7Khz.

Looking for your opinions on exceptional drivers optimized for 1-7Khz.
preferably with natural rolloff on both ends, not needing crossovers. Worst case, 6db.

Range: 1-7Khz
Crossover: none or 6db/octave
paper cone preferred
Efficiency as high as possible.

thanks,
Herman
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Old 15th August 2014, 09:47 PM   #2
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Originally Posted by noviygera View Post
Looking for your opinions on exceptional drivers optimized for 1-7Khz.
preferably with natural rolloff on both ends, not needing crossovers.
Herman,

Although finding a mid driver with a "natural" rolloff on both ends is not difficult, low frequency signal presented to a mid driver even at relatively low levels will make it distort badly if no crossover is used, no matter how exceptional it is.

Art
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Old 15th August 2014, 10:15 PM   #3
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If you try to make a single driver handle too wide a passband, its performance will suffer, especially if no crossover or an inadequate crossover is used. weltersys already pointed out one drawback. Another one is that you will almost certainly have significantly lobing between this driver and the one above it, frequency-wise. This will limit the width of the vertical plane upon which you can listen in high fidelity.
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Old 16th August 2014, 12:02 AM   #4
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Dayton 2" mid?

Not paper though...
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Old 16th August 2014, 12:56 AM   #5
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1st order LP and HP assuming flat from 1-5khz( you'll never get to 7khz this way without significant combing), my first choice would be the Scanspeak discovery 10F-4. Second would be the B&G Neo10.
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Old 16th August 2014, 01:04 AM   #6
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I would be looking at 2" to 3" full range drivers. You will likely have to deal with breakup above 7k though, so natural rolloff won't cut it.
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Old 16th August 2014, 02:10 AM   #7
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The scan speak D3806/8200 will do 1k to 7k. It will obviously need filtering though.
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Old 20th August 2014, 05:08 PM   #8
Juhazi is offline Juhazi  Finland
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My vote is for a 2" dome like Dayton RS52. They have much better dispersion above 3kHz than 3-4" mid cones

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Old 20th August 2014, 07:23 PM   #9
dewardh is offline dewardh  United States
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Originally Posted by Juhazi View Post
My vote is for a 2" dome like Dayton RS52. They have much better dispersion above 3kHz than 3-4" mid cones
But the breakup is fierce . . . not at all sure about using it to 5kHz, forget about even trying for 7 . . .
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Old 20th August 2014, 10:38 PM   #10
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The Morel EM1308 can be used with just a 16mfd cap for the low end with the response rolling off naturally above 5k. It's a 2" dome though.
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