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Re: Jbl 2226h pair for subwoofer [message #85952 is a reply to message #85951] Fri, 25 August 2017 17:52 Go to previous messageGo to previous message
Wayne Parham is currently offline  Wayne Parham
Messages: 18773
Registered: January 2001
Illuminati (33rd Degree)

The (35" x 22" x 13") dimensions I gave you were inside dimensions. My dimensions create a box with 5.7ft3 internal volume. The additional size makes up for displacement from the parts inside.

Your (30" x 20" x 20") dimensions make a box with larger internal volume, 7ft3 to be precise. That 2ft3 is more than would be displaced by the parts.

You could go with (30" x 19" x 17"). That's pretty close to the volume of my original dimensions.

It doesn't have to be exact. Thermal changes at various power levels make more difference than a small volume or tuning change in the box. But still, try to keep it within +/- 10% of 5ft3. Otherwise, you should modify the ports accordingly.

 
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