Best tuneing frequency for JBL 2245 [Archive]

David Ketley

07-16-2017, 11:31 AM

I have a pair of JBL 2245s in 8 cubic feet boxes with two 6" dia ports 12" long this is giving me about 32 Hz from the ports measured.

It seems that I could increase the length of the ports ( easily done) by up to 14" but what is the best low end for the 2245?

I lined with Lambs wool as I found it far more effective than Fiberglas and no issues with glass dust.

Ok done some research and 25Hz to 28Hz seems optimal?

Odd

07-16-2017, 01:29 PM

Have you seen this?
New Lows in Home-Built Subwoofers (http://www.lansingheritage.org/html/jbl/reference/technical/1983-subs.htm)by Lorr Kramer and Greg Timbers (http://www.lansingheritage.org/html/jbl/reference/technical/1983-subs.htm)

David Ketley

07-16-2017, 03:07 PM

Have you seen this?
New Lows in Home-Built Subwoofers (http://www.lansingheritage.org/html/jbl/reference/technical/1983-subs.htm)by Lorr Kramer and Greg Timbers (http://www.lansingheritage.org/html/jbl/reference/technical/1983-subs.htm)

Yes I have had a good look through the Forums, My system is flexible enough to try experimenting till I get the best sound for my listening room.