Home » Sponsored » Pi Speakers » Port size for 4 Pi with JBL 2205 driver
Port size for 4 Pi with JBL 2205 driver [message #36777] Wed, 05 June 2002 07:23 Go to next message
spkrman57
Messages: 522
Registered: May 2009
Illuminati (1st Degree)
Wayne,
Sometime back when I first found this forum, we discussed using JBL 2205's for 4 Pi project. I have 3677's with JBL 2226J's that I like, but this project with the 2205's will be combined with Altec 288/311-60 combo @ 800 hz. I already have all the crossover info taken care of, but I think you said 2205 in 2.1 cubic ft enclosure ported to 58hz. Please let me know the port dimensions. I know this is probably old data handwritten, so I will be patient if you need time to look up. Once again, Thanks for the assistance. I will have pic's posted for this one when completed as I think there are some folks out there with 311-60 Altec horns powered with Altec 288 drivers (1.4" throat).
Regards, Ron
Re: Port size for 4 Pi with JBL 2205 driver [message #36780 is a reply to message #36777] Wed, 05 June 2002 09:33 Go to previous message
Wayne Parham is currently offline  Wayne Parham
Messages: 18789
Registered: January 2001
Illuminati (33rd Degree)

You're right - My plans for 2205's are handwritten. But there is a PID file for the JBL2205 in PiAlign. It calls for a 6.1" dia port that's 5.6" long. Alternately a 5.6" long rectangular port of 4" x 7.25" can be used. You could also use a 3" diameter hole cut into a 1" baffle, with no duct added.

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