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Multi-Way Conventional loudspeakers with crossovers

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Old 20th October 2012, 05:36 AM   #231
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a well designed multi-way passive crossover speaker is much closer to a nominal impedance than a single woofer.
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Old 20th October 2012, 05:42 AM   #232
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Quote:
Originally Posted by James Lehman View Post
a well designed multi-way passive crossover speaker is much closer to a nominal impedance than a single woofer.
Really?

So, if SY in order to align SPLs increases inpedance on lows by adding transformer the speaker is no more "well designed", despite it sounds better?
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Old 20th October 2012, 05:44 AM   #233
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Nope.

Well designed means that there was a good match between the elements to begin with!
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Old 20th October 2012, 05:46 AM   #234
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Quote:
Originally Posted by James Lehman View Post
Nope.

Well designed means that there was a good match between the elements to begin with!
I see. Sound quality does not matter anymore. Means are real targets now.
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Old 20th October 2012, 05:52 AM   #235
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With as many choices as there are out there for all kinds of drivers why would anyone (who knows what they are doing) choose a woofer with a higher SPL than the mids or tweets for a multi-way passive crossover system and then try to fix that problem with a transformer?

So now you have the DC resistance of both the secondary coil of the transformer and at least one coil in the passive crossover in series with the woofer.

That's very counter productive.

James.
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Old 20th October 2012, 05:57 AM   #236
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Do you reproduce DC? I don't. I assume SY does not. So what is that DC resistance about?
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Old 20th October 2012, 07:28 AM   #237
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Originally Posted by James Lehman View Post
With active an crossover, you can also easily use speakers of different impedances
You don't have to have drivers with the same impedance in a passive speaker. IE- 4 ohm woofer, 8 ohm mid, and 6 ohm tweeter is perfectly doable.

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Wolf
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Old 20th October 2012, 08:26 AM   #238
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agreed, provided there is no need to match source/load as in tubes that use transformers and rely on impedance reflection to transfer max. power, although the significance would not be tat important given the outrageous speaker behaviour - impedanc wise.
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Old 20th October 2012, 09:41 AM   #239
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Originally Posted by wolf_teeth View Post
You don't have to have drivers with the same impedance in a passive speaker. IE- 4 ohm woofer, 8 ohm mid, and 6 ohm tweeter is perfectly doable.

Later,
Wolf
its not about drivers having different impedances
like you say, no problem at all
its the varying impedance of each driver
that is real big problem, and plays a major role with passive crossovers
active is not troubled with this
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Old 20th October 2012, 09:48 AM   #240
SY is offline SY  United States
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its the varying impedance of each driver
that is real big problem
That's only a problem if you want to use textbook formulas and topologies, rather than modern CAD methods and a bit of creativity about compensation.
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