+1Note boosting to compensate a null can require tremendous power and make sound elsewhere in the room very "boomy". Boosting by 10 dB using EQ means increasing the output power by 10 times so make sure your sub can handle that.
ThisThe target level has been significantly decreased (to 69dB) thus resulting in an overall efficiency loss of 10+ dB
My understanding about opening doors (particularly the one that lead to a big space) acts as a bass trap and is a great way of regulating bass in a room, but I do not understand the relationship with placing subs in corner (or not).don't put subs in the corners. That's where the strongest modes are, hence the difference when you open a door.
I did not mean to imply you were boosting; I did not know either way, though may have misinterpreted your use of the word "boost". I was making a general comment since "Can I boost EQ to eliminate a null?" is a perennial question.There is no boosting involved here whatsoever. Even in the simulation where I mentioned 'boost' there are no boosting filters used.
This is how the correction curve looks like - only cutting filters were used, no boosting
View attachment 254754
The target level has been significantly decreased (to 69dB) thus resulting in an overall efficiency loss of 10+ dB (assuming measurement was taken at about 80dB) as seen below
View attachment 254753
This could still be fine depending on the listening circumstances (distance, SPL needed, speaker sensitivity, amp power, etc.)
It is worth a try at least (in my opinion)
Sorry. There is no free lunch here. If you lower everything else to make the FR flat, it can only mean that you'll have an overall average level that is too low. What you are going to do next is to turn up the volume, which is equivalent to a boost.There is no boosting involved here whatsoever. Even in the simulation where I mentioned 'boost' there are no boosting filters used.
This is how the correction curve looks like - only cutting filters were used, no boosting
View attachment 254754
The target level has been significantly decreased (to 69dB) thus resulting in an overall efficiency loss of 10+ dB (assuming measurement was taken at about 80dB) as seen below
View attachment 254753
This could still be fine depending on the listening circumstances (distance, SPL needed, speaker sensitivity, amp power, etc.)
It is worth a try at least (in my opinion)
Sorry. There is no free lunch here. If you lower everything else to make the FR flat, it can only mean that you'll have an overall average level that is too low. What you are going to do next is to turn up the volume, which is equivalent to a boost.
My understanding about opening doors (particularly the one that lead to a big space) acts as a bass trap and is a great way of regulating bass in a room, but I do not understand the relationship with placing subs in corner (or not).
@audiofooled thank you for the great answer and I apologize as my question was maybe not 100% clear.
My understanding about opening doors (particularly the one that lead to a big space) acts as a bass trap and is a great way of regulating bass in a room, but I do not understand the relationship with placing subs in corner and opening the doors, both good practice as I understand it, but are they related? Or maybe I misunderstood your post and they are just 2 different and independent recommendations
Yes. I used this room simulator a lot. Have had my sub placed at the side wall until I got dirac live. Then I placed it in the front wall corner to get the most SPL and then cut the peaks in dirac eq.Can't you in REW play around with placements of subs in a room in a simulator of sorts?
I can a little:Can't you in REW play around with placements of subs in a room in a simulator of sorts?