I have a broken Sony GTK-XB5 speaker, the electronics are broken and one of its woofers too, my idea is to use a woofer and a fullrange to make a smaller self-powered Bluetooth speaker.
I thought that if I took the volume of the box and split it in half and did the same with the length of the bass reflex tube I would get a box that sounded the same but smaller but trying in WinISD I have seen that this is not the case, and I do not have the thielle-small parameters of the speaker.
I have a 3D printer and a calibrated microphone. My idea was to make a box with half the volume and try different bass reflex measurements until I got the desired response, but I don't know whether to start with the same diameter or a smaller one.
How would you do it?
I thought that if I took the volume of the box and split it in half and did the same with the length of the bass reflex tube I would get a box that sounded the same but smaller but trying in WinISD I have seen that this is not the case, and I do not have the thielle-small parameters of the speaker.
I have a 3D printer and a calibrated microphone. My idea was to make a box with half the volume and try different bass reflex measurements until I got the desired response, but I don't know whether to start with the same diameter or a smaller one.
How would you do it?
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There may be no need to change the enclosure volume at all, depending.
I'd advise to design a x/o filter first for the units still working and give it a try.
You can deal with cabinet tuning later.
I'd advise to design a x/o filter first for the units still working and give it a try.
You can deal with cabinet tuning later.
No problem, make it smaller. The usual practice is to evaluate driver T/S parameters first
and then you will know better what to expect of it. It is a secondary concern.
and then you will know better what to expect of it. It is a secondary concern.
I saw the title of this thread and just flippantly thought 'chainsaw'.
Assuming the original speaker had only one port for the two woofers and they shared one volume: for half the volume tuned to the same frequency with the same diameter port, double the port length. This may get excessively long though.
If you cut the port area in half, for the half enclosure volume tuned to the original frequency, leave the port length the same as the original. This is probably the better way to go, if my assumptions about the original configuration are correct. And please note that I said cut the port area in half, not the port diameter.
A smaller diameter port makes sense from a design standpoint, since you would have half the volume displacement going from two woofers to one. To keep roughly the same port air velocity, reduce port area proportionally.
If you cut the port area in half, for the half enclosure volume tuned to the original frequency, leave the port length the same as the original. This is probably the better way to go, if my assumptions about the original configuration are correct. And please note that I said cut the port area in half, not the port diameter.
A smaller diameter port makes sense from a design standpoint, since you would have half the volume displacement going from two woofers to one. To keep roughly the same port air velocity, reduce port area proportionally.
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