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Just wondered if anyone had experience of or understood the principles behind these types of enclosures?
I would like to build my own small ‘low profile’ bass cabinet, it is purely for home use and doesn’t need to go loud.
To make it smaller I was planning on using small drivers, say 5”and I was wondering if an ‘isobaric’ enclosure arrangement (using a second speaker in the enclosure behind the front one, “piggy back”) might help extend the bass response of the smaller diameter drive units.
I appreciate that it will be less efficient than a conventional infinite baffle or ported enclosure and that it may present a lower impedance load to the amplifier. The need to double up on drivers, increased cost and lower efficiency make this option unattractive to commercial manufacturers, but in my case the wish to keep it small ‘low profile’ and with no requirement for making it ‘loud’ makes it an interesting proposition. Provided that the ‘Isobaric’ principle does extend the bass response from small drivers?
So…..is that what ‘isobaric’ systems do?