Originally Posted by jwv651
Can you have one sub set at max extension and the other one set to bass extension? Or do they both need to be set the same.... If needed to be the same, which would be preferred max or bass extension in a sealed room?
I am guess what you will find is...
1. It very difficult to get the two subs level matched to your mains.
2. One sub will play the very low stuff (<20Hz.) ok.
3. One sub will play the 30-50Hz area ok.
4. Combined, the two will "bloat" the 50Hz. to xo region and be too low for the rest.
If you do not have any type of room measuring capability, you will probably set the combined levels based on the "bloated" reading. In addition, to help with this problem, you are going to need to eq the bass response. Once you are able to eq the subs, you will also find that you have to run the subs at higher gain settings (on the back of the subs) to get the lower Hz. up to your targeted 75Hz to match the mains.
Now, if you set them to the same (ME or MO)...
1. It will be easier to match them to the mains.
2. You will have a much more balanced response for multiple seating positions.
3. You will not have to turn up the gains on the back of the subs as much.
By setting them the same, you are going to get a better balanced response and probably less distortion. You are going to still need some type of room measurement tool to help place them and phase them in with your mains. Once you have the measurement capabilities, we will see if you need any bass eq'ing.
I hope I am correct and understandable on my comments. This is where I usually place my standard clause:
"I am by no means an expert. I only comment on what I have learned through my experiences and what I have been told by other."