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Old 24th January 2013, 07:01 PM   #11
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I like the FW137 5" midbass, tiny xmax which is ok as a midrange, and a smooth roll off, if i recall its around 4-5k. Take a look it may be a good choice.
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Old 24th January 2013, 07:41 PM   #12
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one strange question why is the power handling of these drivers is very small? i feel very surprise that is that the real wattage? like for FE126 its 15W? strange I feel...
There is no standard for measuring power handling, so it ends up really being the domain of the marketing department. I ignore that number.

What Chris meant when he mentioned the FE108eS is that it might well be the best choice ($$ not considered) Fostex to use as a midrange.

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Old 24th January 2013, 08:14 PM   #13
adason is offline adason  United States
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I like FF125K full range as mid for 3-way speakers
Audio Pages: The way I like speakers these days
however, my aplication was a little bit different, I put the mid on open baffle, and used the mid in much large region, I crossed it from 180Hz up...it can hand it quite well, it is specified for 16 watts continuoes and 50 watts music, which is plenty considering its 92 dB sensitivity, I never play more than watt or two on it...
http://www.einklang-audio.com/treiber/fostex/ff125k.pdf
sadly its discontinued now, but if you select something similar from new fostex line, like FF125WK, you should have no problem to cover 400-4k, you can even go lower, I personaly like to cover widest possible response by midrange, and if you are using fullrange for the mid duties, why not...
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Old 24th January 2013, 08:20 PM   #14
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FX120 as midrange

Unifield Three Mk2 : Von Schweikert Audio

Click the image to open in full size.

dave
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Old 24th January 2013, 08:22 PM   #15
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sadly its discontinued now
I have an R&D pair up for a song.

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Old 24th January 2013, 08:39 PM   #16
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fx120 has rated 10w as pow input but with music pow 30w so 10 is seriously low as it might blow up isnt it? or do we need to consider 30w?
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Old 24th January 2013, 08:44 PM   #17
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fx120 has rated 10w as pow input but with music pow 30w so 10 is seriously low as it might blow up isnt it? or do we need to consider 30w?
Let me repeat. Power ratings on hifi drivers are next to meaningless. Forget that they exist.

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Old 24th January 2013, 08:52 PM   #18
adason is offline adason  United States
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dave, how can von schweikert clain their speaker at 94 dB sensitivity when FX120 is 89 dB/w/m?
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Old 24th January 2013, 08:54 PM   #19
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Don't worry too much about the power rating - by chopping off the signal at both ends, you effectively up-rate the driver as its receiving less overall power to achieve the same midband SPL.

I'd second everything Chris said about the FE126 and its presentation. IMO, you'd be better off with a dedicated midrange.
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Old 24th January 2013, 08:58 PM   #20
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Don't worry too much about the power rating - by chopping off the signal at both ends, you effectively up-rate the driver as its receiving less overall power to achieve the same midband SPL.




How do you do that? increase the sensitivity






I'd second everything Chris said about the FE126 and its presentation. IMO, you'd be better off with a dedicated midrange.
so you dont want FE126 to be used as midrange?
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