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Multi-Way Conventional loudspeakers with crossovers

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Old 22nd November 2012, 02:15 PM   #31
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Originally Posted by lolo View Post
I have a pair of Olasonic I use that way, about 50cm distance, no need for headphones. They just sound stunning but I will build a pair of Pluto soon, for fun.

Would the Visaton B200 be ok to experiment in a pipe firing up? With a dispersion cone of course.. I've got two seating in a box..
In not an omni fan or expert, but the high Qts of the B200 could prove problematic, it is really an OB driver.
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Old 22nd November 2012, 02:27 PM   #32
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... and you would be right.. unless I go for an aperiodic design.
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Old 22nd November 2012, 03:21 PM   #33
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The B200 will "work" with a diffusor. You have to EQ it anyway. I've posted some results in the past.
For simply experimenting with omnis the B200 is a bit expensive and beams a lot. A 3" driver is way more flexible for testing.
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Old 22nd November 2012, 03:38 PM   #34
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Visaton B200 is designed as high efficiency full range. Lightweight cone and size also makes it prone to break up, which even crossed fairly low with LR4 is still easily excited, leading to crossover and imaging problems when used in muti-way system.

When going multi-way an 8" with greater stiffness and xmax could work really well in pipe pointing up. Sufficient damping material is needed to smooth out/eliminate pipe resonance. For 8" crossing up at 750Hz. With 8" back to back tweeters or 2" full range in suitable enclosure could yield great results. I've pondered this for some time.

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Andrew
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Old 22nd November 2012, 03:48 PM   #35
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I already got them and they are collecting dust, it would just be a "fun" project waiting for the plutos..
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Old 22nd November 2012, 03:57 PM   #36
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Originally Posted by Barleywater View Post
Visaton B200 is designed as high efficiency full range. Lightweight cone and size also makes it prone to break up, which even crossed fairly low with LR4 is still easily excited, leading to crossover and imaging problems when used in muti-way system.

When going multi-way an 8" with greater stiffness and xmax could work really well in pipe pointing up. Sufficient damping material is needed to smooth out/eliminate pipe resonance. For 8" crossing up at 750Hz. With 8" back to back tweeters or 2" full range in suitable enclosure could yield great results. I've pondered this for some time.

Regards,

Andrew
totally agree, just the high qts is a little problematic. A 4 way omni with 4" up to 4k, 2inch up to 8k and tweeter for the rest. And a sub of course. Wouldnt that satisfy omni behavior?
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Old 22nd November 2012, 04:53 PM   #37
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totally agree, just the high qts is a little problematic. A 4 way omni with 4" up to 4k, 2inch up to 8k and tweeter for the rest. And a sub of course. Wouldnt that satisfy omni behavior?
With Pluto two way, and 1kHz crossover, the drivers are <1/3 wavelength apart, and virtually no lobing occurs in vertical or horizontal axis. with 4kHz cross from 4" to 2" driver acoustic centers need to be about 1" apart.

I just don't see big improvement possibilities with 4 way, and simplicity rules experimental exploration.

Regards,

Andrew
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Old 22nd November 2012, 05:02 PM   #38
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Thanks Barleywater. I'll stick to a 3-way.
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Old 22nd November 2012, 06:09 PM   #39
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Originally Posted by Barleywater View Post
With Pluto two way, and 1kHz crossover, the drivers are <1/3 wavelength apart, and virtually no lobing occurs in vertical or horizontal axis. with 4kHz cross from 4" to 2" driver acoustic centers need to be about 1" apart.

I just don't see big improvement possibilities with 4 way, and simplicity rules experimental exploration.

Regards,

Andrew
Of course, I didnt consider the driver centres. Just thinking out loud (bad habit), pity though, the 2inch could be nice with omni action to 8k ish (i would think).
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Old 23rd November 2012, 11:31 AM   #40
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Originally Posted by tuxedocivic View Post
Thanks Barleywater. I'll stick to a 3-way.
Rightfully so.
And as I tried to point out, a little directivity in the highs is a good thing (no full omni required).
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