[Wayne A. Pflughaupt]

lovingdvd wrote:

2) Its obvious to me how the -15dB 366hz shelving filter works. But I don't readily see how the REW house curve function gets translated to the BFD.

You can see in cyberbri’s graph that the equalization he needed played nicely into a house curve. But this isn’t the same for everyone. Some people end up with somewhat flat response once a few peaks and valleys are dealt with. This is the situation that brucek devised the shelving filter for, as an easy way to introduce a house curve when a sub had been equalized to flat.

As brucek notes, with REW people now tend to equalize along the target line. However, if you happen to have relatively flat response above the point where the target line drops, it makes more sense to apply the shelving filter than add a bunch of filters between 30 and 100 Hz.

For instance, referring to cyberbri’s equalized graph – notice how flat his response is between 30-80 Hz. If he decided he wanted a steeper slope, it would make the most sense to apply a single shelving filter.

lovingdvd wrote:

3) There seems to be three different types of house curves. On type is a fairly linear drop off from the 20-100hz range. The other type is more curved as shown with the 366hz filter. And yet another approach I've seen posted is where bass from say 20-35 hz is several dB higher, and then it drops several dB but flattens out from there (rather than sloping away as the frequency gets higher).

Is there a consensus for what tends to work best or what type most peopel prefer?

As others have noted, it’s largely what sounds best and most natural to you.

Regards,
Wayne