About Fostex:
That one:
https://www.solen.ca/pdf/fostex/ff85wk.pdf
before that one ?
https://www.solen.ca/pdf/fostex/fe108ez.pdf
That one:
https://www.solen.ca/pdf/fostex/ff85wk.pdf
before that one ?
https://www.solen.ca/pdf/fostex/fe108ez.pdf
My preference, yes (both treated). FE108eS would make a good midrange thou. A bit soft on the top and needs a big box to do any bass.
dave
dave
IMO, these drivers are completely inadequate in a context of "hi-fidelity" considering that and average singer output varies between 90dB and 110dB at 1 meter. I would not consider anything that can't fulfill that basic requirement.
Above what most/many people listen to, and will lead to hearing damage if you spend much time there.
dave
We are talking about peak SPL here which is around 105dB for an orchestra front row seat. What's the point if the mid can't reach that level? And I'm not talking about any headroom. Certainly nowhere close to fidelity in my book.
I just started to look into my music excerpts:
seems to have a lot of peaks between 400-500hz and 1,200-1,600hz in about half of them.
That might be a problem if we're forced to use xover points above 400-500hz... I'm thinking mostly about the Radian. The ATC i'm not too worried because i know it can work very well down to 350hz with a steep slope xover.
Also small cones might be an issue since we won't use any exotic enclosure to extract max low-end from them...
If the final high-pass xover is above 400-500hz i'd say we'll have to find different music excerpts.
seems to have a lot of peaks between 400-500hz and 1,200-1,600hz in about half of them.
That might be a problem if we're forced to use xover points above 400-500hz... I'm thinking mostly about the Radian. The ATC i'm not too worried because i know it can work very well down to 350hz with a steep slope xover.
Also small cones might be an issue since we won't use any exotic enclosure to extract max low-end from them...
If the final high-pass xover is above 400-500hz i'd say we'll have to find different music excerpts.
Average of 90 dB, max of 115dB?
Maximum Averaged and Peak Levels of Vocal Sound Pressure | Braxton Boren - Academia.edu
dave
What about choosing drivers that can reproduce midband instead of cherry picking music for drivers that can't?
there is the ''1m distance'' to take into consideration.
that's a darn short distance to hear a singer shout, i'd say.
Check this:
http://lib.tkk.fi/Diss/2010/isbn9789526030746/article1.pdf
77 to 92dB A-weighted seems to be much more realistic, and that includes peaks.
we'll have to cherry-pick one way or the other.
at least, with the music its more fair for all the drivers.
But then again, should we be fair with all the drivers ? At the possible costs of losing useful information ?
I mean: if one is able to reproduce correctly a larger bandwith, that's a benefit, isnt it ? That driver as an edge over the other ?
finally and importantly: how this will affect the conclusions ?
Is more energy/natural ease in the 400-500hz will automatically give a more positive perception to the testees ? Same for the 4khz-7khz ?
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again we are stucked with the sensorial perception thing.
So let's all agree that 140 dB @ 1khz is painful (it is.)
Now, what would be the exposure time needed for the pain to build-up ? Is 8 milliseconds would be enough ? 200 ms ? Or more like few full seconds... ?
If the ear/brain has not the time to fully process the real effect of 140dB (or 110dB) peak, then why bother with it in our specific case ?
So let's all agree that 140 dB @ 1khz is painful (it is.)
Now, what would be the exposure time needed for the pain to build-up ? Is 8 milliseconds would be enough ? 200 ms ? Or more like few full seconds... ?
If the ear/brain has not the time to fully process the real effect of 140dB (or 110dB) peak, then why bother with it in our specific case ?
Yea, and that is the reason he only use small 5" two ways instead of using 12"-15" mids and subwoofers? 🙂
Anyone that call nonlinearities of speakers irrelevant is either clueless or has an agenda.