Posted by Wayne Parham [ 192.35.232.241 ] on August 09, 2006 at 17:33:41:

In Reply to: help with pi alignment posted by Jim Dudley on August 09, 2006 at 11:20:29:

The Image Dynamics IDQ10 woofer looks good in cabinets from 0.5ft³ to 1.5ft³ tuned to 26Hz. PiAlign suggests 0.75ft³ which provides a nice flat response curve that is slightly overdamped. It has f3 of 40Hz and f10 of 25Hz, so it will sound very nice in home or in a car. Being slightly overdamped, room/cabin gain will effectively conjugate its amplitude response. For subwoofer use, you can go a little larger, to 1.0ft³ or 1.25ft³. That will give f3 closer to 30Hz, but f10 is still around 25Hz. The larger 1.0ft³ cabinet makes a great alignment for use outdoors or in very large rooms, but may sound a little bit boomy in medium to small rooms or in your car.

Replies:

• Port tuning frequency - Jim Dudley 08:31:50 08/10/06 (1)
  • Re: Port tuning frequency - Wayne Parham 09:51:43 08/10/06 (0)
• Thanks Wayne!! (nt) - Jim Dudley 05:58:24 08/10/06 (0)