Very nice session!! I wish more people would watch it, besides another HiFi review 😮 keep going, loved your explanations/analoges..much easier to understand! Hope your cold is getting better, stay safe! Thanks a lot for your lifetime for your community!! 🎉
Thank you Gerald, my #1 supporter!!! Through sharing what I know I get to think more about it and often figure out things I have not put together before... :) Overall, very enjoyable process and I get to make fantastic friends along the way! (wink wink ; ) I've crossed from viral phase to bacterial phase.... still a nuisance but a different kind LOL. Few more days and I'll be good as new. That's the plan.
Hello, Janos. Thank you again for another fascinating video. Is this not the very basic principle behind the original Klipschorn which used the room corner as an extension of the horn structure? My best to the furry friends...
Hi Bruce, similar but not same... will talk more about the Klipsch-situation another time, as there the room acts as a continuation of the horn. Here, the room is the room, not part of the horn, as there is no horn, but a transmission line that already loads the low frequencies.
Not wishing to distract from the point, but the way you represent the sound waving is as a transverse wave, where as sound waving is longitudinal in nature, is it not? It's just that the model we carry in our mind's eye is somewhat different in each case. The difference between a reflex port and a transmission line sounds like the difference between an ordinary LED and a laser. Thanks for explaining the difference of propagation in room.
Superb observation! We always see the sinewave as a representation of the soundwave, but it's not the shape of the soundwave, but rather the plot of pressure in function of time. In space it looks like transverse sheets of altering pressure traveling through space.
curious if this mouth is what the bose 4.2's i have..have. theyre 45° angled drivers, so imagine a speaker with an edge cut off. inside it has another 45° angled slab of wood cutting the interior nearly in half, and on the underside of that slab is a port/mouth...possible helmholtz filter. its the full width of the cabinet, rectangular and about 25mm thick. i intended on a cheap fix just to get a set of speakers going, but its evolved 😂 so the woofers despite being very cheap with promising curves (goldwood brand 8") are said to work best in a sealed cabinet, but after watching this i think i want to respect what bose did and see if it works out...will i kill the cheap speakers running ported i wonder? ..if its more of a mouth than a bass port it might be ok? less explosive pressure? now ive tuned hedphone response using port size tweaks, and i was thinkong of trying to balance perdormance like that. but if this port is a good thing i dont want to wreck it.
I am building a voigt pipe from some plans they are 2m tall at the moment the 8inch driver is 863mm from the base what would happen if I moved the driver up 100mm that would make it 1100mm for the top of the pipe to the centre of the driver appreciate any advise you can give me as they look a little bit odd with the driver quite low
Very nice session!! I wish more people would watch it, besides another HiFi review 😮 keep going, loved your explanations/analoges..much easier to understand! Hope your cold is getting better, stay safe! Thanks a lot for your lifetime for your community!! 🎉
Thank you Gerald, my #1 supporter!!! Through sharing what I know I get to think more about it and often figure out things I have not put together before... :) Overall, very enjoyable process and I get to make fantastic friends along the way! (wink wink ; )
I've crossed from viral phase to bacterial phase.... still a nuisance but a different kind LOL. Few more days and I'll be good as new. That's the plan.
Hello, Janos. Thank you again for another fascinating video. Is this not the very basic principle behind the original Klipschorn which used the room corner as an extension of the horn structure? My best to the furry friends...
Hi Bruce, similar but not same... will talk more about the Klipsch-situation another time, as there the room acts as a continuation of the horn. Here, the room is the room, not part of the horn, as there is no horn, but a transmission line that already loads the low frequencies.
@@realworldaudio yes, agreed. Similar but not the same. One could array them on a spectrum. Thanks!
Not wishing to distract from the point, but the way you represent the sound waving is as a transverse wave, where as sound waving is longitudinal in nature, is it not? It's just that the model we carry in our mind's eye is somewhat different in each case. The difference between a reflex port and a transmission line sounds like the difference between an ordinary LED and a laser. Thanks for explaining the difference of propagation in room.
Superb observation! We always see the sinewave as a representation of the soundwave, but it's not the shape of the soundwave, but rather the plot of pressure in function of time. In space it looks like transverse sheets of altering pressure traveling through space.
curious if this mouth is what the bose 4.2's i have..have. theyre 45° angled drivers, so imagine a speaker with an edge cut off. inside it has another 45° angled slab of wood cutting the interior nearly in half, and on the underside of that slab is a port/mouth...possible helmholtz filter.
its the full width of the cabinet, rectangular and about 25mm thick.
i intended on a cheap fix just to get a set of speakers going, but its evolved 😂
so the woofers despite being very cheap with promising curves (goldwood brand 8") are said to work best in a sealed cabinet, but after watching this i think i want to respect what bose did and see if it works out...will i kill the cheap speakers running ported i wonder? ..if its more of a mouth than a bass port it might be ok? less explosive pressure?
now ive tuned hedphone response using port size tweaks, and i was thinkong of trying to balance perdormance like that.
but if this port is a good thing i dont want to wreck it.
What if we inject smoke in pipe to study pressures.?
I am building a voigt pipe from some plans they are 2m tall at the moment the 8inch driver is 863mm from the base what would happen if I moved the driver up 100mm that would make it 1100mm for the top of the pipe to the centre of the driver appreciate any advise you can give me as they look a little bit odd with the driver quite low
thank you
Your email mail.