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Old 11-25-2012, 01:06 PM
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Default Port Bends?

How many bends are too many?

Im designing a box for a pair of SA8v2s on a RF 1500bdCP. In order to get enough port area with low enough tuning, I havent found a way against using 3 port bends.






Also, in this design there are ~4.625" between the port opening and the back of the sub. Will I have to worry about unloading? The port is 2.5" wide (if that matters).
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Old 11-25-2012, 01:17 PM
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you will be fine.
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Old 11-25-2012, 01:19 PM
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no such thing
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Old 11-25-2012, 01:22 PM
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if these designs can use this many bends and work as well as they do your 3 bends will not effect anything.
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Old 11-25-2012, 01:35 PM
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Sweet.. Thats what I wanted to hear. Thanks!

I have one more question. How much space should be behind the back of a speaker and the port? In the design above, the port is 2.5" wide and theres just over 4.5" between the port and back of the sub.
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Old 11-25-2012, 01:41 PM
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Quote:
Originally Posted by Hdorre View Post
Sweet.. Thats what I wanted to hear. Thanks!

I have one more question. How much space should be behind the back of a speaker and the port? In the design above, the port is 2.5" wide and theres just over 4.5" between the port and back of the sub.
it doesnt matter
if the sub has no pole vent it can basically touch the port wall if need be
if the sub has a pole vent u need to stay the same distance away from the wall as the opening is.. so if u got a 1" round vent onthe motor stay away from that nearest wall at least 1 to 2"

in your case you have 0 issues
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Old 11-25-2012, 02:02 PM
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whats up with the pocket behind the port?
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Old 11-25-2012, 02:15 PM
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Quote:
Originally Posted by Mr.G6 View Post
it doesnt matter
if the sub has no pole vent it can basically touch the port wall if need be
if the sub has a pole vent u need to stay the same distance away from the wall as the opening is.. so if u got a 1" round vent onthe motor stay away from that nearest wall at least 1 to 2"

in your case you have 0 issues
Awesome! Thank you.

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whats up with the pocket behind the port?
Im not sure what youre talking about. Maybe the angle made an illusion. I attached a pic that has different colors. Maybe you can use it to elaborate.

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Old 11-25-2012, 02:18 PM
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Awesome! Thank you.


Im not sure what youre talking about. Maybe the angle made an illusion. I attached a pic that has different colors. Maybe you can use it to elaborate.

between the purple and blue boards
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Old 11-25-2012, 02:27 PM
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between the purple and blue boards
My ports "created" that pocket. Should I just block it off? There are only four hundredths of cubic foot in that space.
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