Originally Posted by rotts4u
With regard to the main adjustments everyone makes when setting up the Fv15HP Can someone give me a quick explanation of what to expect from each one?
I am thinking 1 port vs 2
I am running mine as LFE inputs and using the AVR to control crossover at 80hz so none of the other settings are critical in my application. I have just never had a sub before with all these settings and I want to better understand what each does. I have a huge room and as of now I am running 1 port , Freq 14 dampening high.
I guess I am looking for a few common setups starting at the highest output one, then one step down in terms of output with tighter bass, then perhaps one more step down with the tightest bass which is likely where I am now.
First, make sure you leave the limiter on, so you don't blow the driver.
Personally, I liked 1 port much better, but it depends on your room. 2 ports gives more headroom, but less low frequency extension.
Rumble stacks an additional steep very low frequency high-pass filter in addition to the one you configure with freq-damp. I forgot exactly what type of filter. That can go on or off. On gives you more headroom. Off gives you cleaner sound.
Freq is the frequency of the high pass filter. I'd say 14 or 20, but higher gives you more headroom.
Damping is the slope of the high pass filter. Low=steep, High=gentle. High is cleanest, but low is the most headroom. It changes the character in the bottom octave. It's related to Freq, but different.
Low-pass: Since you are using an AVR, it's best to use the LFE input and bypass he low-pass filter in the sub, unless you have some kind of signal noise/interference problem. If you do, use the standard input, but crank the low-pass frequency to 120hz on the sub.