rectangle ports?

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cmaroman95

Member - Posts: 22

Joined: September 27, 2003

Location: United States

Posted: October 12, 2003 at 8:42 PM / IP Logged

how do you calculate for a rectangle port? and tune it. i am want to do it for a MMATS 15 and i want the deepest bass i can get.

"get in where you fit in"

bberman1

Gold - Posts: 2,314

Joined: March 11, 2002

Location: United States

Posted: October 13, 2003 at 9:03 AM / IP Logged

What are the port specs for your sub?

94bonny

Copper - Posts: 108

Joined: August 24, 2003

Location: United States

Posted: October 13, 2003 at 9:20 AM / IP Logged

is there an advantage to a rectangular port?

mbiker1

Member - Posts: 37

Joined: October 08, 2003

Location: United States

Posted: October 13, 2003 at 9:38 AM / IP Logged

I have only done one box with rectangle ports but the sound quality i think i not as good as a regular port. The rectangle port bounces the sound around to much a give it the kinda dull sound. Now i admit they do look pimp but for a loss in sound quality in wouldnt use a rectangular port.

cmaroman95

Member - Posts: 22

Joined: September 27, 2003

Location: United States

Posted: October 13, 2003 at 9:58 AM / IP Logged

yeah i am going for looks. with a 15 i know i won't have good quality anyway. but the specs are 30 sq inch x 15 " Long

"get in where you fit in"

Ketel22

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Joined: August 23, 2003

Location: United States

Posted: October 13, 2003 at 12:09 PM / IP Logged

wouldn't your port then be 3"x10"x15" id? to acheive the 30sq in and 15" long

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Ketel22

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Joined: August 23, 2003

Location: United States

Posted: October 13, 2003 at 12:10 PM / IP Logged

actually, whatst the width of your enclosure? itll be that by 15" by what ever makes the width a sq 30"

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bberman1

Gold - Posts: 2,314

Joined: March 11, 2002

Location: United States

Posted: October 13, 2003 at 12:33 PM / IP Logged

Ketel22 is correct it should be 3"x10"x15, which would give you a port area of 30 sq in. You could also go 2"x15"x15 Is this a MMATS pro 15? http://www.mmatsproaudio.com/pdfs/recommendenclosures.pdf

mbiker1

Member - Posts: 37

Joined: October 08, 2003

Location: United States

Posted: October 13, 2003 at 1:33 PM / IP Logged

You would probally get the best all around sound and looks by making four rectangular ports so youll have enough air for the 15.

cmaroman95

Member - Posts: 22

Joined: September 27, 2003

Location: United States

Posted: October 13, 2003 at 1:39 PM / IP Logged

yes it is the pro 15 and what is the advantage of have the port turn at the end instead of have it just go straight down

"get in where you fit in"

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rectangle ports?

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