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4Pi Port Options [message #68142] Sat, 11 June 2011 20:30 Go to next message
tgaffner is currently offline  tgaffner
Messages: 2
Registered: May 2011
Esquire
Hello everyone,

I am in the process of building 3 4Pis. The center is going to be sealed, so there is no concern there. However, I am curious about the ports for the left and right channels.

How many different options are there? As far as relocating them, going to a round port, 2 ports, so on and so forth.

So basically if you have any ideas on altering the port from the stock plan, please tell me what they are, how you did it, and how did it work.
Re: 4Pi Port Options [message #68144 is a reply to message #68142] Sat, 11 June 2011 21:13 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18783
Registered: January 2001
Illuminati (33rd Degree)

There's no room on the baffle for round ports. That's why it's layed out the way it is. That one is a tight fit.

Re: 4Pi Port Options [message #68145 is a reply to message #68144] Sun, 12 June 2011 08:15 Go to previous messageGo to next message
blvdre is currently offline  blvdre
Messages: 35
Registered: April 2010
Location: Burlington, VT
Baron
...and if you mirror the ports from right to left, it's a nice clean look.
Re: 4Pi Port Options [message #68153 is a reply to message #68145] Sun, 12 June 2011 15:10 Go to previous message
Dave_S is currently offline  Dave_S
Messages: 28
Registered: April 2011
Chancellor
In a stock enclosure there is no way two round ports would fit. The flared ports also take up a lot of area on the baffle.

I am in the middle of my 4 Pi build. I modified the enclsoure size to increase the bass response. Right now, I have them taken apart to do the veneer and trim work. I will do a build report in 2-3 weeks after they are done and I have had time to do some sound measurements. I tested them before finished to make sure that my modified design did not have major sound issues that would cause me to have to cut the enclures apart again. They sound really good and I had a hard time putting my old speakers back in place.

The larger cabinet size dictated larger ports or ports that were too short to make sense. I like the rectangular ports, but I was trying to avoid making a long narrow slot that is supposed to be more prone to standing wave issues. The round ports seemed safer and easier to tweak/tune for my modified design.

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