Hi Guys,
Hope you can help with a quickie:
I'm building some big active three-way monitors and have a question regarding passive radiators: is it possible to mount the PR on the front baffle together with the bass driver? So they're basically pointing the same way?
Hope you can help a complete noob🙂
Hope you can help with a quickie:
I'm building some big active three-way monitors and have a question regarding passive radiators: is it possible to mount the PR on the front baffle together with the bass driver? So they're basically pointing the same way?
Hope you can help a complete noob🙂
No problem with that as far as I can see, there are a number of commercial speakers that do this. Sounds below around 200hz are omnidirectional which is why they can be placed on the sides, rear and front without too much effect on the sound, this is my simple understanding.
I also think that the placement is not problematic.
But you should keep in mind that passive radiators in a box should have significantly more displacement volume (Vd) than the active bass driver. Otherwise, such a construction has hardly any level advantages compared to an equalized closed box.
Many greetings,
Azrael
But you should keep in mind that passive radiators in a box should have significantly more displacement volume (Vd) than the active bass driver. Otherwise, such a construction has hardly any level advantages compared to an equalized closed box.
Many greetings,
Azrael
..........and why I prefer dual opposed PRs of the same frame size.
Yes, exactly. Never forget that the diaphragm of a bass speaker hardly moves at the tuning frequency of a bass reflex system and almost only the resonator contributes to the sound radiation. If you also consider that halving the frequency means quadrupling the excursion, you can very quickly deduce that passive radiators must have significantly more displacement volume.
Many greetings,
Azrael