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Multi-Way Conventional loudspeakers with crossovers

rePhase, a loudspeaker phase linearization, EQ and FIR filtering tool
rePhase, a loudspeaker phase linearization, EQ and FIR filtering tool
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Old 28th April 2016, 08:59 PM   #1021
pos is offline pos  Europe
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This is not an in-phase complementary crossover: there is no way to really fix that kind of thing with a convolution on the input.
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Old 28th April 2016, 09:13 PM   #1022
mark100 is offline mark100  United States
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Originally Posted by pos View Post
This is not an in-phase complementary crossover: there is no way to really fix that kind of thing with a convolution on the input.
That's what I thought, and why i was trying to distinguish between electrical filters and natural acoustic response of drivers.

Sorry for the lack of terminology....
thx
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Old 28th April 2016, 09:48 PM   #1023
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This is only terminology indeed, but the distinction is important
The final acoustical filer is the one to consider, and is the combination of the "natural" (whatever that means, box+driver+passive components) and "electrical" (passive or active, analog or digital, IIR or FIR) filters.
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Old 28th April 2016, 10:54 PM   #1024
BYRTT is offline BYRTT  Denmark
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rePhase, a loudspeaker phase linearization, EQ and FIR filtering tool
mark100,

Slopes into REW overlay plot, textbook target curves is imported IR-wav created in Rephase.
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Old 29th April 2016, 12:57 AM   #1025
mark100 is offline mark100  United States
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Quote:
Originally Posted by pos View Post
This is only terminology indeed, but the distinction is important
The final acoustical filer is the one to consider, and is the combination of the "natural" (whatever that means, box+driver+passive components) and "electrical" (passive or active, analog or digital, IIR or FIR) filters.
Yes, totally onboard.
And sorry for the term 'natural'...what i was trying to say was the response of the driver + enclosure, without any form of crossover at all...
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Old 29th April 2016, 01:03 AM   #1026
mark100 is offline mark100  United States
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Originally Posted by BYRTT View Post
mark100,

Slopes into REW overlay plot, textbook target curves is imported IR-wav created in Rephase.
Thanks BYRTT, your posts are always helpful...

I really think my confusion simply came down to wondering how much can convolution fix at the input level....
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Old 29th April 2016, 01:52 AM   #1027
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I really think my confusion simply came down to wondering how much can convolution fix at the input level....
To put it simply, convolution on the input cannot do anything about relative magnitude and/or phase differences between drivers.
Those will remain no matter what.
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Old 4th May 2016, 01:49 AM   #1028
mark100 is offline mark100  United States
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To put it simply, convolution on the input cannot do anything about relative magnitude and/or phase differences between drivers.
Those will remain no matter what.
Hi pos,
Sure, and....
Since a speaker is a collection of drivers, ...and since magnitude and phase differences between drivers cannot be solved by input convolution....
....doesn't that mean the most optimal way to tune a speaker is with individual driver by driver alignment ?
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Old 4th May 2016, 07:55 AM   #1029
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Yes physical alignment of the emitting surfaces is the only way of getting something accurate off axis (on the horizontal axis, and granted the polar responses are reasonably matched).
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Old 4th May 2016, 08:28 AM   #1030
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....doesn't that mean the most optimal way to tune a speaker is with individual driver by driver alignment ?
This is exactly what I do. I have a 4 way stereo FIR filter. Each channel is treated in its own FIR channel, doing phase and level filtering.

The result is amazing
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