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When speakers duplicate drivers

What are the effects of duplicating drivers? I'm not talking about the so-called "half" driver where one does, say, both bass and midrange and the other does only bass, I'm talking about straight duplication.

What is the effect on sound? From a technical standpoint, what happens to the incoming signal when it gets split over duplicate drivers?
128x128jimspov
kotta's avatar
kotta
649 posts
 
I have such a speaker which I'm listening to right now. Paradyme Phantom V4. 2-way floorstander w/ two 6 1/2" drivers. I always preferred 2-ways for some reason. This loudspeaker has fuller sound which I believe goes down to 40hz. They are still 8 ohm spks. I would have thought the impedance would be lower w/the extra driver.
bdp24's avatar
bdp24
9,706 posts
 
If done correctly, increased power handling and greater maximum SPL. If not, phase cancellation, comb-filter effects, and erratic frequency response depending on listening angle relative to the speaker.
don_c55
1,025 posts
 
No multiple drivers covering the same frequency range for me!

Small differences (like phase), between drivers, show up as distortion.

I like 3 way, with 3 separate drivers.
mapman's avatar
mapman
22,087 posts
 
Not a fan of driver arrays for home audio.   
mitch4t's avatar
mitch4t
1,609 posts
 
.
Here’s one with 12 of the same woofers and 9 of the same tweeters in one speaker cabinet.

http://www.dagogo.com/gr-research-ls9-loudspeaker-review
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