I'm not sure I agree. I think it looks ok, although the integration could do with some work. This is a single, small-ish sub in a good sized room, it's never going to be ruler flat to 10Hz.
You're showing no signs of compression in those sweeps, but the crossover region could do with some work.
Can you measure the sub and speakers alone with a timing reference?
Measure sub on the LFE channel
Disconnect a main and measure the sub on main channel (this includes the crossover)
Measure the L, C, and R, with no sub
Do all of that with a consistent timing reference. The timing reference can be any speaker other than the sub, and not the speaker you disconnect for measurement 1. I use surround back left.
With these measurements we can play with the timing and see if we can improve over Audyssey's integration.
Well you don't need it for REWThanks. I don't just yet but I'm currently going down the rabbit hole of dual subs and REW
Well you don't need it for REW
depending on how good a job your AVR does on EQing subs (Duals should be EQd as one) you might not need it ?
If you intend using BEQ then you definitely need it
Your Denon should be able to do a good job of the dual subwoofer EQ (double check with REW) so unless you want to go down the BEQ rabbit hole at this time you don't really need a miniDSPThat's where I am currently. I'm using REW with my UMIK-1 to check the response of my two subs in different positions. Hopefully I can get a decent result with it and my x4500h.
Hey. I had a very quick look, there's not a lot to work with having just single full range sweeps. It looks like your subs are something like 20-30dB hot which is insane. Even for me.
- How are you level matching your subs? Are you setting them all to 75dB each along with your speakers?
- Are you running Audyssey?
- How have you configured your minidsp with six subs?
Can you take the following measurements, with Audyssey off, all timing and EQ reset in the minidsp and the AVR:
- each sub, individually, on the LFE channel (4), with a timing reference
In fact, let's just start there. With that we can look at the time alignment to get the smoothest response.
You have a set-up like me with a pair of VNF subs. This changes things.
Usually the practice is to time align all the subs in the room, then apply the same EQ to the combined response (so the same EQ on all subs). This can lead to a lumpy response on individual subs, but the combined response at the MLP is smooth, which is usually all that matters.
That doesn't work for VNF subs though. It's no good having big humps and dips on the subs right behind the couch as it gives a weird feeling.
I'd be tempted to look at the four far field subs individually, time align them, then level match them and integrate them with the mains. Then I'd look at the two VNF subs as a separate sub, time align them and EQ them hard, ruler flat, and lower the gain. That'll give you all the TR in the back of the couch without disrupting the rest of the room. We can time align the VNF subs with the other four so that they don't ruin the response.
We can see whether that approach works once I can see the individual measurements.