Originally Posted by G. E.
Please, go ahead: ARTA's PIR-File is attached. The measurement is taken from a nearfield listening position after a 45min acoustic setup (starting with a naked room).
I don't agree, the roll-off is mostly due to heavy bass-trapping -- the naked room has a T60 longer than 6 seconds. Furthermore the decay time of modes doesn't change that much with higher monitor roll-off.
Let's see if I get this. The before, after and this last file is all coming from the same room?
Do you have a before measurerment from a nearfield LP from the same room? Naked off course.
To have a T60 of 6 sec can not be true in that room, maybe if in a church yes. This with heavy bass trapping I don't understand, can it be more explained what you mean. It is the room you have to treat not the loudspeaker. Proper treatment of modes/resonances in a room should not affect the loudspeaker.
Please do explain what you mean by "Furthermore the decay time of modes doesn't change that much with higher monitor roll-off".
And what additional treatment have been done in those 45 min besides of the VPR of yours. The last file shows a very dead room.
When I get the time I will post some waterfalls from your files here and from ARTA. if it is OK with you.