Post by belbo on Sept 28, 2019 9:20:36 GMT 12
I thought this was interesting: press on the photo.
Multiple drivers
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Pundit
 
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Post by michaelw on Sept 28, 2019 12:12:03 GMT 12
you are missing a 3rd pic where you can achieve correct time alignment by electrical means
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Post by Owen Y on Sept 28, 2019 12:44:38 GMT 12
There are also often phase shifts within electronics & within the crossover.
However, get an active loudspeaker with digital xover + DSP & all will be solved 
DarkLantern blog - darklanternforowen.wordpress.com
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Connoisseur
Multiple drivers Sept 28, 2019 19:01:11 GMT 12
- Edited Sept 28, 2019 19:04:06 GMT 12 by colinf: Spelling
Post by colinf on Sept 28, 2019 19:01:11 GMT 12However, get an active loudspeaker with digital xover + DSP & all will be solved Phase response is important and you need to align your speaker drivers by measuring the impulse response, which also shows up the crossover. I fiddled quite a bit with this in the 2000s and when the phase is right and levels matched on an oscilloscope, the sound becomes transparent. That results in correct phase at only one listening position. If you move up or down, the phase goes out again. For that reason I put the tweeters on a horizontal plane on the inside, so that only toe-in would change the phase. Interestingly Nelson Pass is now using an analogue system for active crossovers. See the Burning Amp video of him explaining it (on the Linear Systems website). AMR-iFi R&D
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Post by Owen Y on Sept 28, 2019 19:37:34 GMT 12
I've always liked the Tannoy Dual Concentric tweeter/mid-woofer concept (but not so much their implementation with big, heavy woofers nor their xover).
I'm sure that the KEF concentric coaxial driver would be good too, imaging-wise at least. DarkLantern blog - darklanternforowen.wordpress.com
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Post by belbo on Sept 28, 2019 20:01:11 GMT 12
I really like well implemented single driver speakers.
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Post by colinf on Sept 28, 2019 20:50:08 GMT 12
Single drivers do have that cohesive sound don’t they. I heard the Kef LS50 a few months ago and liked their integration between drivers.
Still thinking of building some speakers with Mark Audio Alpair 11s here! AMR-iFi R&D
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Post by cartridgeguyonline on Sept 29, 2019 8:38:44 GMT 12
Single electrostatic drivers here with no crossover.
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Post by colinf on Sept 29, 2019 20:06:11 GMT 12
Quad ESL57 has 2 drivers with a crossover: a left and right bass panel and tweeter panel in the middle.😉
Actually they would work well in my small UK room! AMR-iFi R&D
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Post by michaelw on Sept 29, 2019 22:00:32 GMT 12
doesn't 2 x bass + 1 tweeter = 3 drivers
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Connoisseur
Multiple drivers Sept 29, 2019 23:05:37 GMT 12
via mobile - Edited Sept 29, 2019 23:45:17 GMT 12 by colinf
Post by colinf on Sept 29, 2019 23:05:37 GMT 12
Technically yes but the woofer panels are driven by the one woofer crossover. So it’s still 2-way.
But the drivers are time-aligned, being on the same plane. 😉 AMR-iFi R&D
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