sreten.
The speaker is high efficiency in the midband only.
The rolloff of a Qts = 0.5 speaker starts about 3 times it's Fs. Here, the Fs is 42. So the speaker is about 90 or 91 dB efficient. The climbing SPL throughout the midbass and midrange is not bass rolloff that will change when put into a box.
Before you begin the project, you might want to ask yourself: do I really want to build a 7 cubic foot giant box for this speaker? I mean it will work fine and all, but still.
Throwing together a 1 or 1 1/2 cubic foot box just to make use of a speaker hanging around is one thing. I guess we have all done that. But to properly construct a 200 liter box takes some doing, takes some time and even some money. Do you really want to invest all that into a box that, at the end, will have a bass cutoff of 33 Hz? And if you are going to use it as a sub, that midband high efficiency doesn't get used anyway, in fact it will be an obstacle for your crossover.
If you are determined to make use of this woofer, by all means go ahead. If you think the end product will justify the size and effort put into making a large box, well, you might wish to reconsider.
The rolloff of a Qts = 0.5 speaker starts about 3 times it's Fs. Here, the Fs is 42. So the speaker is about 90 or 91 dB efficient. The climbing SPL throughout the midbass and midrange is not bass rolloff that will change when put into a box.
Before you begin the project, you might want to ask yourself: do I really want to build a 7 cubic foot giant box for this speaker? I mean it will work fine and all, but still.
Throwing together a 1 or 1 1/2 cubic foot box just to make use of a speaker hanging around is one thing. I guess we have all done that. But to properly construct a 200 liter box takes some doing, takes some time and even some money. Do you really want to invest all that into a box that, at the end, will have a bass cutoff of 33 Hz? And if you are going to use it as a sub, that midband high efficiency doesn't get used anyway, in fact it will be an obstacle for your crossover.
If you are determined to make use of this woofer, by all means go ahead. If you think the end product will justify the size and effort put into making a large box, well, you might wish to reconsider.
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