Originally Posted by eightninesuited
Thanks Mike. I think I posted in the guide thread as well.
I'm looking at the back of my Sledge 1000 (PC13). The options are Low pass and highpass, with -12 and -24. Is this what I'm adjusting? For both? What about PEQ?
I may need to answer in both places, as well.
You just want to implement a low-pass
filter on your subwoofers. That will pass (allow) all the subwoofer frequencies below the frequency you select. In this case, I would recommend using the same frequency which you are using for the speaker crossovers and for the LPF of LFE, assuming that the LPF is adjustable on your AVR. I suspect that you would want to use 80Hz for everything. I would use the -24 setting. That will roll-off the subwoofer at a rate of 24db per octave, at frequencies above your low-pass filter.
I wouldn't worry about fooling with the PEQ right now. Just try this first, so that you can listen to one new variable at a time. Later when you are used to the new sound, you can always try some additional mid-bass boost centered at 63Hz if you want to. You may not need to, though. The cascading crossovers already accent the frequencies below 80Hz.
Edit: I just saw your follow-up post. Again, I would just try one new variable at a time. Since you have been using the 20Hz port tune, just leave it there. Then, once you have listened for a while, you can always try changing the port tune to 16Hz to listen for any adverse changes to the sound. Ideally, you can pick-up a little headroom that can be applied to your low-frequencies, as well. But, I would approach this as a process, rather than as a whole group of changes at different frequencies, all occurring at once.