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Old 11th October 2005, 06:43 AM   #1
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Default Dual driver system

Has anybody tried this arrangement? They run in phase. I read somewhere the front driver is well isolated from the influence of the enclosure and therefore behaves like one on an infinite baffle. The disadvantage would be you use two drivers (half the impedance as well, since they are in parallel), but you can have a very small enclosure without the drawbacks. I am not an expert at all to judge, intuitively it makes sense to me, but would like to hear from one who really tried this.

Thanks,
Michael
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Old 11th October 2005, 07:32 AM   #2
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This doesn't make sense to me. The box the driver in the back is in would definately affect the sound in my opinion. If you think about it, you can't do an alignment like this with dual 12s and have the rear woofer in a 1 ft3 enclosure and think it will work like it's in an IB. I doubt there would be any benefit. If anything this is just an inverse bandpass config, where you only need half the enclosure size but twice the drivers and power. You also yield less distortion with this alignment.
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Old 11th October 2005, 10:58 AM   #3
Joules is offline Joules  United States
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Half the enclosure size, twice the power handling, less ditortion less influence from rear wave --- other than the extra driver what's not to like?
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Old 11th October 2005, 12:21 PM   #4
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It's called an Isobarik speaker. Some Isobarik speakers include Linn Isobarik, Sara, Neat, Wilson Benesh ..
See this article for more info.

Isobarik
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Old 11th October 2005, 12:24 PM   #5
sachi is offline sachi  United States
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Isn't the push pull type isobarik better than the one presented above.
The first driver would tend to get hot and the parameters would change,right?

Sachi
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Old 11th October 2005, 12:46 PM   #6
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Quote:
Originally posted by sachi
Isn't the push pull type isobarik better than the one presented above.
The first driver would tend to get hot and the parameters would change,right?

Sachi
Not a spk temperature expert but Clam shell type Isobarik is best as air is compressible and clamshell arrangements minimises the chamber of air. Drawback because you are using the back of the drivers(facing you) the higher frequency are attenuated.
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Old 11th October 2005, 12:56 PM   #7
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They work.

I'd go for a bipolar push-push though.
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Old 11th October 2005, 05:46 PM   #8
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Quote:
Originally posted by mazeroth
If anything this is just an inverse bandpass config
I meant to say isobarik

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Old 12th October 2005, 07:28 AM   #9
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Guys, thanks a lot. After reading the tutorial in that link, I think I will rather avoid this configuration.
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