The mid ai plan on using has a .13 sealed requirement, which is tiny but I want a bigger box.
If I go to .25 then that would be better, but it’s ported and it brought up the question should you port the mid If you have a woofer?
If I go to .25 then that would be better, but it’s ported and it brought up the question should you port the mid If you have a woofer?
Hi
Additional details added can empower a healthier response. What size speakers? Speaker size influences air movement.
Additional details added can empower a healthier response. What size speakers? Speaker size influences air movement.
6.5" mid, woofer is 12" they are in separate cabinets so there is no air exchange in the enclosure, I was just wondering about tuning 2 ports vs just having the woofer and if porting the mid by itself posed any danger or presented any benefits. I don't see it alot.
Typically considered a bad idea, though I don't have direct experience myself. I would expect it to make the XO to whatever is below harder. There will be phase and impedance weirdness to deal with.
Why would it have to be ported because of increased volume?
I think you should simulate all variants and see what the differences are.
Not very common but it has been done, in that case for good reason.
Electro Voice did it in a PA cabinet intended for very high SPL , and which became the favourite of a few Top Notch Bass Players.
EV VMR (Vented Mid Range)
Sporting a monster (for a midrange) 2.5" edgewound aluminum ribbon voice coil and
A beast among beasts.
Electro Voice did it in a PA cabinet intended for very high SPL , and which became the favourite of a few Top Notch Bass Players.
EV VMR (Vented Mid Range)
Sporting a monster (for a midrange) 2.5" edgewound aluminum ribbon voice coil and
and not "any" woofer but an EVM12L
A beast among beasts.
who suggests it?
maybe it's suggested if you use the driver as midwoofer and need increased bass response (without added woofer).
anyhow, as pop4richard wrote we would need more information to give good answers:
what midrange and woofer do you plan to use?
what is the planned crossover frequency to the woofer?
what SPL do you expect or need?
Mid is this Morel. The woofer is to be determined actually. I was more curious about the concept rather than this actual specific situation. I appreciate the need to be thorough but it was a general question. In terms of SPL I don't have a specific need.
if the highpass the mid is passive and odd order then there's potential problems of the lower Z peak interacting with the capacitor's reactance to create a "boost" and added/unwanted excursion. I do think someone like Irving Fried would use a couple of "pressure-release" holes. (Those VMR used about the same motor as EV15L !)
I have tinkered quite a bit with ported midbass for car audio and created ported door pods for my wifes car.
For a low Qts driver like your Morel I would put it in a QB5 alignment, larger box but lower excursion at the expense of slightly less low end extension.
QB5 alignment
What frequency do you intend to high pass the midbass? If it is high enough, you won't get much if any benefit from the port.
For a low Qts driver like your Morel I would put it in a QB5 alignment, larger box but lower excursion at the expense of slightly less low end extension.
QB5 alignment
What frequency do you intend to high pass the midbass? If it is high enough, you won't get much if any benefit from the port.