Let's see:@Farenheit so I just tried doing this and it works. It's mindboggling because my original measurements, when I use a sub, were measuring that null with both the left and right channels. I'm guessing that the sub it contributing to it even at a 95hz crossover. So the EQs are boosting the left by 10db and the right by 7.9db. But when I boost both channels the null doesn't budge a single db. So instead I inversed the left from a 10db boost to a -11db reduction and lifted the right to a 10db boost. It's cut the null from a -10db dip to a -5db dip. So it's not completely fixed it but it's made a huge difference. I did all of this inversing and changing in increments and each time the delta between -10db and -5db got smaller. I'm sure I could take it further but I'm concerned about boosting it too much as +10db is already big.
All of this happened without having any effect on the rest of the frequency range so I'm looking pretty good now.
While doing this I also experimented with having my door open or closed. Previously I had kept it closed but I'm realised that the bass roll off changes from 20hz to 10hz with the door open. A boost for me as I listen to electronic music![]()
I tried with up to two subwoofers, but despite measuring better, the bass was, I don't know how to say... "not compact", even though my Swiss army knife (DBX Venu360) gives me the opportunity to vary the cut, phase, time, etc. of each subwoofer.
The secret is to dedicate an extra hour to equalization. My FARENHEIT method is not about lowering a specific frequency on one channel and raising a specific frequency on the other. You have to start by lowering the specific frequency on one channel with a Q16 where the null resides and see what happens without equalizing the other channel and measuring again.
From there, it may be good to also lower another frequency with Q 16 to 2 Hz or 4 Hz below or above the main null peak, or even 9 Hz! and measure again.
When you see that it has no greater effect on the null, then you go to the other channel and go up to "fill" the null in the same way, but not necessarily the same frequencies and the same Q!
It's a trial and error exercise, but I guarantee that with patience you will flatten it, you will make money selling your subwoofers... and your partner will love you even more, (great night of passion, I predict, hahaha)
I repeat:
FAST, EASY AND FOR THE WHOLE FAMILY
Last edited: