Some FR measurements of the new FE166En - diyAudio
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Old 17th July 2010, 01:45 AM   #1
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Default Some FR measurements of the new FE166En

I've been working on a new MLTL cabinet for the FE166En since the FE167E went away and the 166 needs a smaller cabinet. I took the following at 0.5m in a large garage. Usually, I normalize all of the different angles to 1000Hz, but that did not fit what I was seeing, so I simple spliced at 500Hz. The bottom end below 250Hz is combined nearfield driver and port. I scaled the whole thing to match calculated SPL, so take absolute SPL with a grain of salt. All plots were smoothed 1/6 octave. (For those of you who insist that detail is lost in the smoothing, I added the raw plots.)

Above 500Hz, my on-axis plot agrees favorably with the Fostex factory plot. The 5* and 10* plots are darn near flat from 3kHz to above 15kHz. My first impressions of the 166En were that this is a very smooth sounding driver. I can see why. No peaks 5-7kHz and some 3dB of BBC dip.

So, for your enjoyment:
Attached Images
File Type: gif frequency Response 0-15.gif (17.4 KB, 573 views)
File Type: gif Frequency Response 0-60.gif (20.0 KB, 545 views)
File Type: gif Raw FR Plots.gif (41.1 KB, 535 views)
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Old 17th July 2010, 02:07 AM   #2
GM is offline GM  United States
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Dips at ~2,4,8 kHz, what more can one with tinnitus want, he asks rhetorically?

GM
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Old 17th July 2010, 09:46 AM   #3
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Nice. Cheers for that Bob.
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Old 17th July 2010, 03:01 PM   #4
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Quote:
Originally Posted by GM View Post
Dips at ~2,4,8 kHz, what more can one with tinnitus want, he asks rhetorically?

GM
An where is my tinnitus? 8kHz.

Bob
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Old 17th July 2010, 03:08 PM   #5
hm is offline hm  Europe
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Hello,
thanks Bob.
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Old 17th July 2010, 03:23 PM   #6
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Quote:
Originally Posted by GM View Post
Dips at ~2,4,8 kHz, what more can one with tinnitus want, he asks rhetorically?

GM
Ha Ha that hits home, GM

Bob, thanks for the info. I was considering a project with the FE167E, but as you said, it's not available (why am I always a day late and a $ short?)-anyways look forward to trying this new driver

Terry
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Old 1st May 2012, 06:42 AM   #7
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hi Bob, very informative and useful, thank you. could you also make some subjective comments on this driver?
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Old 1st May 2012, 02:13 PM   #8
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Might it sound any better enabled? Thanks for posting your measurements. Looks like a promising driver!
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Old 1st May 2012, 03:00 PM   #9
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Hmm, as smooth as it measures and BB says it sounds, damping its little spikes runs the risk of raising any perceived sibilance at the expense of critical mids 'life', so doesn't seem like a good plan to me.

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Old 2nd May 2012, 03:30 AM   #10
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Quote:
Originally Posted by jazzclassics View Post
hi Bob, very informative and useful, thank you. could you also make some subjective comments on this driver?
Quite frankly, the FE166En's have been in boxes ever since the FF165WK's hit the street. Not that the FE166En is not a good driver, just that the FF165WK sounds good to my ears and is more suitable for the cabinet I prefer.

Bob
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