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This mic http://www.minidsp.com/products/acoustic-measurement/umik-1 along with the Room EQ Wizard is all you need to start measuring. You can use their DSP modules if you want to make changes. REW will also interface with a Behringer Feedback Destroyer. Very few SPL meters are designed for...

Do you have an SPL meter? The Radio Shack analog model is best. That paired with Excel and a free spreadsheet or a free Java applicaton will allow you to plot the in-room frequency response.You can also make sure your panels aren't vibrating. That enclosure should be heavily braced.And you...

Do you have an SPL meter? The Radio Shack analog model is best. That paired with Excel and a free spreadsheet or a free Java applicaton will allow you to plot the in-room frequency response.You can also make sure your panels aren't vibrating. That enclosure should be heavily braced.And you...

Plug the port. That's the easiest thing to do. Your other option is to lengthen the ports. How long? 60" That's right each port would need to be 5 feet long to get your tuning down to 25hz.

Based on your dimensions, I calcualted that your enclosure is tuned to 41.5 hz. Give or take 1/10hz. That is way, way, way too high unless you are listening to 80's rock (they didn't record any bass in it). For that sub, you need to tune 25hz or lower.

If it is only a graphic EQ, then it is not fully adjustable. The Q portion (width of the filter) is standard and filters are centered on a frequency. A parametric EQ allows you to change both the frequenc and width of the filter. An EP2500 will push 800w RMS per channel into 2 ohms before...

One of the rare times you have ever given incorrect information. You should never feed any signal to the sub that is below the box's tuning frequency. If your ported box is tuned to 22hz, then a subsonic filter should be set at approximately 20hz. I always go 2 to 3 hz below tuning. Below...

Power handling is the most misunderstood parameter in the audio world. That 1800w could be at 1,000hz. Basically, they run power through the sub until some parts fails from thermal overload. Basically, the glue melts off the voice coil and it unwinds. In the world of home theater subs, most...

Mentioned twice in 1 thread. :D Comparing the Theile/Small parameters of the two subs. The Blau has a Qts of .6 while the SI has a .38. The higher the Qts, the steeper the roll-off down low. Supposedly, a Qtc (that's the roll-off measure when the sub is in a box) of .707 is perfect. But...