Hmmm.. can this really be this easy?
Here are some screen caps of the EQ function in REW:
This one shows the pre-Audyssey response of my two subs together (all graphs below at 1/24th smoothing). Ignore the waterfall for now as I didn't set the modal parameters in REW - I just wanted to concentrate on the FR for this exercise:
This one shows the target curve I set for 10-200Hz:
This shows the predicted curve after REW has calculated the filters:
This shows all three of the above overlaid for comparison:
This shows the assumptions I gave REW to work with (I stabbed in the dark):
Can it really be that easy to get such a flat FR over the selected range, using a cheap parametric EQ and REW?
I should add that once you have set the parameters, then you just hit the GO in REW and watch as it creates the predicted curve. Amazing.
You can also load a target curve too if you have one, but I am thinking that if you EQ the bass response to flat, as I have done here more or less, then run Audyssey, the latter will add its own target curve to the input it finds. I realise we don't want a flat response across the bass region, but a gradually rising one - but won’t Audyssey take care of that, along with DEQ? Alternatively one could run Audyssey first and then apply the EQ to Audyssey's final curve by way of fine tuning. I believe it is better though to get the curve as flat as possible before running Audyssey so it has less to do - but that might be me conflating this with getting the room as good as possible before running Audyssey. If so, then I'd run the EQ first and Audyssey second.
If it really is this easy, I feel the purchase of a 1124P coming on :) It's only $100 or so...
Anyone who knows what they are doing (as opposed to me who is guessing), please chime in... Thanks!