Hey Guys,

Great to be back after way too long a time away. Been busy with school taking courses in chemistry, physics and calculus. These courses (actually, the work required to get good grades) has kept me away from the listening room.

I have a question for anyone that can anwer. In a basement listening enviroment, that is, carpet on top of concrete, painted drywall, vaulted ceiling, is there much absorption of the 'slam' frequencies from subwoofers?

Here's what I've noticed: my Mirage SS1500 (active 10 inch driver, passive 10 inch driver, and a 1 square foot enclosure) has better punch in a 9000 ft^3 space on the main floor and my 2 Servo 15s in a 4000 ft^3 basement. It doesn't make sense to me.

I did a SPL reading in the summer. I got readings of +30 db in the range of 30 hz to 37 hz. I had the subs running from the SUB out of the receiver. Now I run the MAIN PREOUT of the receiver to the X30 crossover which one signal to the Anthem amp and another to the subs. Haven't taken any readings since.

The house literally shook when watched Gothika, probably a result of the peak mentioned above. When I play some Dr. Dre, or Madonna, the music is kind of lifeless. The truly deep deep bass is there, but no punch or energy.

Is this a result of the absorption rate of the basement? a phase issue?

I'm in the process of finding a good rate for the Rane PE17 parametric EQ. Would one suffice, or would I get better performance from the subs by tuning each one separately?

Thanks for reading this folks, I always appreciate your input.

THOB