how to vent the port dia?

Tony.ca · 3rd June 2003, 12:40 PM

Hi guys,

Just wanted to know if the design of a vented enclousure asks for a 4" dia and 10" length ,can I split them into two i.e two ports of 2" in dia and 5" in length. Will this make any difference in the sound quality.

Thanx,

Tony

JOE DIRT® · 3rd June 2003, 01:03 PM

Hi there Neighbor!!!....Tony you could get away with doing that....my only concern is that you might get a little port noise with that small of a diameter...I would personally use 2 3inch ports and leave them a little long and then tune the box after by shortening them

Cheers!!The DIRT®

Tony.ca · 3rd June 2003, 01:54 PM

Thanks jow will do that, and one more thing if the put the ports at the back of the box, will it make any difference with the sound quality. I am using this sub for the car and there is not much of space in the front of the box to accomodate the ports . The size is 13 1/2" X 14 1/2". Any suggestions as to where to mount the ports? Overall dimensions are 17" D X 32" W X 15" H. Using for a dual JBL 12" drivers.

Thanx

Tony

JOE DIRT® · 3rd June 2003, 03:18 PM

I would place the ports on top.......I hope your going to face the drivers to the back of the car, you will gain a few Db there

Cheers!!The DIRT®

Tony.ca · 3rd June 2003, 05:49 PM

hi joe
will put the ports on top,but don't u think it is too close to the top car panel if this is ok anyway i will go ahead with the top ports.

thanks

tony.

JOE DIRT® · 3rd June 2003, 05:54 PM

measure the clearance your going to have....you want atleast 2 inches minimum

Tony.ca · 4th June 2003, 01:10 AM

joe the dirt

I don't have 2" clearance on top can I put it right behind the box and face the port inside the car. And also will it matter it I put the ports horizontal or vertical,If I put it vertical right behind the driver will it affect the sound quality.

Tony

3rd June 2003, 12:40 PM	#1
Tony.ca diyAudio Member Join Date: Feb 2003 Location: Brantford- Ontario	how to vent the port dia? Hi guys, Just wanted to know if the design of a vented enclousure asks for a 4" dia and 10" length ,can I split them into two i.e two ports of 2" in dia and 5" in length. Will this make any difference in the sound quality. Thanx, Tony

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3rd June 2003, 01:03 PM	#2
JOE DIRT® diyAudio Member Join Date: Apr 2003 Location: Brantford, ON	Hi there Neighbor!!!....Tony you could get away with doing that....my only concern is that you might get a little port noise with that small of a diameter...I would personally use 2 3inch ports and leave them a little long and then tune the box after by shortening them Cheers!!The DIRT®

3rd June 2003, 01:54 PM	#3
Tony.ca diyAudio Member Join Date: Feb 2003 Location: Brantford- Ontario	Thanks jow will do that, and one more thing if the put the ports at the back of the box, will it make any difference with the sound quality. I am using this sub for the car and there is not much of space in the front of the box to accomodate the ports . The size is 13 1/2" X 14 1/2". Any suggestions as to where to mount the ports? Overall dimensions are 17" D X 32" W X 15" H. Using for a dual JBL 12" drivers. Thanx Tony

3rd June 2003, 03:18 PM	#4
JOE DIRT® diyAudio Member Join Date: Apr 2003 Location: Brantford, ON	I would place the ports on top.......I hope your going to face the drivers to the back of the car, you will gain a few Db there Cheers!!The DIRT®

3rd June 2003, 05:49 PM	#5
Tony.ca diyAudio Member Join Date: Feb 2003 Location: Brantford- Ontario	hi joe will put the ports on top,but don't u think it is too close to the top car panel if this is ok anyway i will go ahead with the top ports. thanks tony.

3rd June 2003, 05:54 PM	#6
JOE DIRT® diyAudio Member Join Date: Apr 2003 Location: Brantford, ON	measure the clearance your going to have....you want atleast 2 inches minimum

4th June 2003, 01:10 AM	#7
Tony.ca diyAudio Member Join Date: Feb 2003 Location: Brantford- Ontario	joe the dirt I don't have 2" clearance on top can I put it right behind the box and face the port inside the car. And also will it matter it I put the ports horizontal or vertical,If I put it vertical right behind the driver will it affect the sound quality. Tony

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