Speaker-Inquisitor
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- Nov 19, 2019
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45hz is anechoic - this means the speaker is flying in the air with no boundaries nearby.
29hz (-6dB) half space means the speaker is standing on the ground with no further boundaries - like Outside on a field.
in a room, unless youre living in a giant hall, there will be at least one Wall near enough to provide further bass enhancement.
My mothers partner has a pair of DD66000 in his living room, they easily reach down into the lower twenties.
The DD66000 has around 250 Liters net volume, the tuning frequency is afaik ~30hz.
WinISD, which assumes half space conditions predicts what JBL provides as specification (29hz -6dB)
The 1501AL woofer has a superb motor structure. They can move +-12mm without loosing significantly BL, thanks to the underhung voice coil. Just look at the klippel measurements on lansing heritage Page you linked.
29hz (-6dB) half space means the speaker is standing on the ground with no further boundaries - like Outside on a field.
in a room, unless youre living in a giant hall, there will be at least one Wall near enough to provide further bass enhancement.
My mothers partner has a pair of DD66000 in his living room, they easily reach down into the lower twenties.
The DD66000 has around 250 Liters net volume, the tuning frequency is afaik ~30hz.
WinISD, which assumes half space conditions predicts what JBL provides as specification (29hz -6dB)
The 1501AL woofer has a superb motor structure. They can move +-12mm without loosing significantly BL, thanks to the underhung voice coil. Just look at the klippel measurements on lansing heritage Page you linked.
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