I was wondering about where a good port placement is- the front of the speaker or the rear? Most speakers use the rear. Some the front. A few the bottom.
Against front placement might be that having the port on the front baffle could make baffle diffraction effects a little crazy. And if the port is in the rear, you don’t have to look at it.
But my guess is that front placement might be best in terms of having the sound from the port come from the same general location as the drivers. If the port is in the rear, the port output comes from, say, a foot away from the bass driver and is firing into the opposite direction. Then all your bass would sound could be smeared out because it’s coming from different places and hitting your ears at such different times. So put the port on the front, up close to the woofer.
People don’t seem to do that very often. So I’m probably missing something.
I’d also guess there’s no need to offset the port from the center of the (front or rear) baffle because the frequencies coming out of a port won’t really be influenced by baffle diffraction.
I ask because I’m wondering where I should be putting the port for my ongoing MT design. Thanks.
-Jon
Against front placement might be that having the port on the front baffle could make baffle diffraction effects a little crazy. And if the port is in the rear, you don’t have to look at it.
But my guess is that front placement might be best in terms of having the sound from the port come from the same general location as the drivers. If the port is in the rear, the port output comes from, say, a foot away from the bass driver and is firing into the opposite direction. Then all your bass would sound could be smeared out because it’s coming from different places and hitting your ears at such different times. So put the port on the front, up close to the woofer.
People don’t seem to do that very often. So I’m probably missing something.
I’d also guess there’s no need to offset the port from the center of the (front or rear) baffle because the frequencies coming out of a port won’t really be influenced by baffle diffraction.
I ask because I’m wondering where I should be putting the port for my ongoing MT design. Thanks.
-Jon
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