slot port vs round port
slot port vs round port
Whats up guys? So here's a question for the box building pros: whats better in terms of overall performance, and slot port, like an L port, or a port tube?
My dilemma is this, I've got some new subs coming in, and I've been told to make the enclosure 3 cu.ft and tune to 37 hz. I've been fiddling with the RE enclosure calculator and I've got it dialed in almost to where I need it using a slot port like in thefirst picture
but then I tried the12volt's round port calculator and the same box requires 2.5 inches of 3'' tubing, shown in the bottom pic
which I figure I can just attach externally. but which is gonna be better for a daily driver and occassionaly spl runs? i haven't taken into account that I would have to add pieces in the L to reduce port noise, but I've also heard that round ports have more noise anyways. So which is better? I figure the harder one to make will also be more fun so thats no longer a factor, I just want to know which will sound better.
p.s. I figured the port doesn't really make a difference in terms of spl, round ports are just easier to tune than slots, but I could be wrong
My dilemma is this, I've got some new subs coming in, and I've been told to make the enclosure 3 cu.ft and tune to 37 hz. I've been fiddling with the RE enclosure calculator and I've got it dialed in almost to where I need it using a slot port like in thefirst picture
but then I tried the12volt's round port calculator and the same box requires 2.5 inches of 3'' tubing, shown in the bottom pic
which I figure I can just attach externally. but which is gonna be better for a daily driver and occassionaly spl runs? i haven't taken into account that I would have to add pieces in the L to reduce port noise, but I've also heard that round ports have more noise anyways. So which is better? I figure the harder one to make will also be more fun so thats no longer a factor, I just want to know which will sound better.
p.s. I figured the port doesn't really make a difference in terms of spl, round ports are just easier to tune than slots, but I could be wrong
RE enclosure calculator is poo. you must add around 0.1 cubic feet to what it states and around 4-6hz higher than what it states to get what the actual enclosure will be.
what sub(s) are you getting?
if its going into a minivan, i'd do two 4" aeroports with subs back, port to the side
what sub(s) are you getting?
if its going into a minivan, i'd do two 4" aeroports with subs back, port to the side
RE enclosure calculator is poo. you must add around 0.1 cubic feet to what it states and around 4-6hz higher than what it states to get what the actual enclosure will be.
what sub(s) are you getting?
if its going into a minivan, i'd do two 4" aeroports with subs back, port to the side
what sub(s) are you getting?
if its going into a minivan, i'd do two 4" aeroports with subs back, port to the side
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You must pay attention to the vent area. A single 3" port is going to become useless with anything having more displacement than a low end 10. For a good 12" driver, you are going to want at least a 4" port or 12.5" square inches of vent.
Ultimately, a round port has characteristics making it technically superior to a slot vent of the same area. Whether one could hear or measure it though is hard to say. Round ports are generally way easier to re-tune. If you need a lot of vent area though, it is usually easier to achieve with a slot.
Ultimately, a round port has characteristics making it technically superior to a slot vent of the same area. Whether one could hear or measure it though is hard to say. Round ports are generally way easier to re-tune. If you need a lot of vent area though, it is usually easier to achieve with a slot.
You must pay attention to the vent area. A single 3" port is going to become useless with anything having more displacement than a low end 10. For a good 12" driver, you are going to want at least a 4" port or 12.5" square inches of vent.
Ultimately, a round port has characteristics making it technically superior to a slot vent of the same area. Whether one could hear or measure it though is hard to say. Round ports are generally way easier to re-tune. If you need a lot of vent area though, it is usually easier to achieve with a slot.
Ultimately, a round port has characteristics making it technically superior to a slot vent of the same area. Whether one could hear or measure it though is hard to say. Round ports are generally way easier to re-tune. If you need a lot of vent area though, it is usually easier to achieve with a slot.
sooo can ABS pipe work as a substitue for those precison sound ports?
Last edited by fresh1; Sep 9, 2009 at 12:53 AM.
