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Multi-Way Conventional loudspeakers with crossovers

New Faital 6" Mid-Woof 6RS140
New Faital 6" Mid-Woof 6RS140
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Old 27th May 2018, 03:34 PM   #1
eriksquires is offline eriksquires  United States
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Default New Faital 6" Mid-Woof 6RS140

Haven't simulated it in a box yet, but like all FaitalPro mid-woofers, this features really nice high frequency extension.



FaitalPRO | LF Loudspeakers | 6RS140
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Old 27th May 2018, 05:40 PM   #2
Ugg10 is offline Ugg10  United Kingdom
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Does look nice, would fit a 10+6+1 three way well. Cross at 400 and 2.5-3k maybe. What sort of price are these likely to be? No-one seems to be stocking them yet.
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Old 28th May 2018, 11:10 AM   #3
TMM is offline TMM  Australia
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One man's extended response is another man's unwanted breakup. From about 3kHz to 10kHz is all cone breakup because the impedance curve is increasing which means the frequency response should be decreasing . After about 10kHz the breakup is done and it rolls off as you would expect.
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Old 28th May 2018, 07:19 PM   #4
fatmarley is offline fatmarley  England
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If It's a soft cone then breakup wont sound bad. I can't see any peaks In the response, so assuming Faitals graph Is correct I'd be very surprised If the breakup was hard on the ears.

In contrast, the hard coned SB15NRXC30-8 sounds nasty without the breakup taken care of .

Last edited by fatmarley; 28th May 2018 at 07:22 PM.
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Old 29th May 2018, 04:23 AM   #5
TMM is offline TMM  Australia
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While the cone breakup may shape the response up at the same rate that the voicecoil inductance makes it go down giving a flat response and perhaps not too much ringing, the main problem is that the non-linear distortion components from lower frequencies that land in the breakup region get shaped up too so they are higher compared to a driver which doesn't break up. There's little reason to cross a 6.5" midwoofer above 3kHz so it's preferable if there isn't cone breakup and the response just rolls off smoothly. Less cone breakup equals lower upper-mid/lower-treble distortion.

e.g. This doesn't look too bad except the little blip at 4.7kHz
http://www.zaphaudio.com/6.5test/6MI90-FR.gif

Until you see the steadily rising distortion from 300Hz to 2kHz
http://www.zaphaudio.com/6.5test/6MI90-HD.gif

The exception to this is when the motor is so linear that shaping the distortion up 10dB or so doesn't matter because it's still really low. The SB15NRXC30-8 is a good example of this. It's breakup is harsh but almost absent from it's distortion curves. The breakup is easily dealt with in the crossover though, it just takes a few extra components.
Since manufacturers rarely publish non-linearity data, it's best to avoid drivers which have breakup occurring at a low frequency if you don't need an 'extended' response.

Last edited by TMM; 29th May 2018 at 04:34 AM.
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Old 29th May 2018, 04:36 AM   #6
freddi is offline freddi  United States
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New Faital 6" Mid-Woof 6RS140
nice - wonder if it will run ~$90USD ? - low Q motor
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Old 29th May 2018, 05:33 PM   #7
Charles Darwin is online now Charles Darwin  United Kingdom
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Quote:
Originally Posted by fatmarley View Post
If It's a soft cone then breakup wont sound bad. I can't see any peaks In the response, so assuming Faitals graph Is correct I'd be very surprised If the breakup was hard on the ears.

In contrast, the hard coned SB15NRXC30-8 sounds nasty without the breakup taken care of .
Interestingly the 4Ω version of the SB has that huge break up peak without any appreciable increase in impedance.
5" SB15NRXC30-4 :: SB Acoustics
So the absence of an increase of impedance does not indicate the absence of cone break up.


(For some reason the published curve for the 8Ω stops early)
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Old 29th May 2018, 08:53 PM   #8
freddi is offline freddi  United States
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New Faital 6" Mid-Woof 6RS140
the "vocals" version looks interesting too

http://www.faitalpro.com/en/products...p?id=101020145
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