Wayne Parham Messages: 18787 Registered: January 2001
Illuminati (33rd Degree)
The Altec 515G (8G, 16G) works well in the four π or seven π cabinets. Response is just what you want for home hifi, slightly overdamped, much like the curve that results from a JBL 2226.
The 515G is suitable for use in vented cabinets from 2.0ft3 to 5.0ft3 tuned to 40Hz to 50Hz. The lower tuning makes the cabinet slightly overdamped. A slightly higher tuning is best if the cabinet is used outdoors or in large spaces.
Note that not all 515 drivers have similar electro-mechanical specs. The 515B and 515C, for example, work best in larger boxes up to 15ft3.
jimbop Messages: 60 Registered: May 2009 Location: Colorado Springs, CO
Viscount
Most of what I read states that the 515G needs a horn cabinet, so I would be reluctant to try it in a bass reflex type cab (such as the 4Pi). That's why I was asking about the 7Pi suitability.
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