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Multi-Way Conventional loudspeakers with crossovers

Effect of adding second 8" woofer?
Effect of adding second 8" woofer?
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Old 1st March 2019, 11:35 AM   #1
Sape is offline Sape  Finland
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Default Effect of adding second 8" woofer?

Any idea what happens if another woofer is added to loudspeaker cabinet?
http://www.seas.no/index.php?option=...=44&Itemid=461

Sensitivity goes up but cabinet has to be much bigger?
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Old 1st March 2019, 12:01 PM   #2
Osvaldo de Banfield is offline Osvaldo de Banfield  Argentina
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Which cabinet?
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Old 1st March 2019, 12:18 PM   #3
Sape is offline Sape  Finland
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Cabinet with one woofer is now around 30 liters. Vented.
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Old 1st March 2019, 12:23 PM   #4
Osvaldo de Banfield is offline Osvaldo de Banfield  Argentina
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Helmoltz resonator?
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Old 1st March 2019, 12:25 PM   #5
Mihkus is offline Mihkus  Estonia
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Less precise sound on the mid/low side. Bass will suffer the most ofcourse. (If ported enclosure)
If not ported the lower end will suffer stil but not as bad. Overall: Bad idea. Two woofers sharing same cabinet, same room is almost always a bad idea.

Last edited by Mihkus; 1st March 2019 at 12:28 PM.
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Old 1st March 2019, 06:23 PM   #6
denibeni is offline denibeni
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If you want the same sound quality you need twice the cabinet volume for 2x woofers.
If the woofers are identical, then there is no problem sharing the same cabinet.
Don't forget to re-tune the port for the increased box volume and you need larger port area for the increased air movement.
If you using passive crossover you need to adjust it too.
If done properly, you get increased dynamics and max SPL if your amp has enough muscle for that.

Last edited by denibeni; 1st March 2019 at 06:27 PM.
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