Wayne Parham Messages: 18752 Registered: January 2001
Illuminati (33rd Degree)
You could always check your cabinet to see if the port is too short, I suppose. The plans call for 1-7/8" length. R13 insulation should line the rear, bottom and side nearest the port. So check everything, if you think you might have sone something wrong. You might even want to have the woofer checked, if you think they used to sound differently.
To my rears, they sound very powerful and not "bass shy" but they do lack the deepest bass. Like most of my designs, you really need to augment them with subs for the bottom octave (20-40Hz).