Bass response

[matt houser]

I wouldn’t worry about your subs at all. Their response looks good. I would try and pull the speakers out from the wall if you can. That’s where your troubled area is coming from since that’s above the XO. Not sure how it came up to move the subs to fix that... FWIW I’ve corner loading to work better as well. Also, some of the anomalies above the XO could be from reflections off of the couch to mic. Try a heavy blanket on the back of the couch and see if the sweep changes. Also, subtracting distance usually makes bass sloppier as that will add delay since you’ve told the AVR that the subs are closer. If you add distance, it will lessen the delay time and help impulse response, and smooth frequency response. I see that your FR has improved, but I would guess it sounds looser because you’ve added cycles(phase/delay) to the processing. That’s not readily apparent from a FR sweep. Try adding some distance in one foot increments and resweep after each time. My hunch is between that, and moving out your mains, subwoofer FR will stay good, but above xo will improve, and bass will tighten up.

I have some quiet time today after work I should be able to run some sweeps, when experimenting with the delay settings does it help to add delay to only one sub or should you always be adding the same amount of delay to both subs at the same time, secondly, I have the ascend acoustics CMT 340 SE’s, from what I’ve heard the speakers are great and should be plenty capable of enough output above the crossover frequency to fill my room, I was reading in their manual that moving the speaker closer to the wall could add bass, you are saying to pull them further away, i’m sure you have good reasoning, again I am learning could you explain how this may help

 

[William Lemmerhirt]

I have some quiet time today after work I should be able to run some sweeps, when experimenting with the delay settings does it help to add delay to only one sub or should you always be adding the same amount of delay to both subs at the same time, secondly, I have the ascend acoustics CMT 340 SE’s, from what I’ve heard the speakers are great and should be plenty capable of enough output above the crossover frequency to fill my room, I was reading in their manual that moving the speaker closer to the wall could add bass, you are saying to pull them further away, i’m sure you have good reasoning, again I am learning could you explain how this may help

Since audyssey treats them independently at first and then globally, I would add the distance globally to the lfe output vs independently. None of the eq will change only the delay.
Yep, I do believe those are very good speakers. However every speaker is controlled by the room and as such, yours are too. You’re right, moving them closer to a wall will increase bass, but not always evenly. Kinda like how corner loading subs excites all the room modes at the same time making it easier to eq. You can’t eq nulls(by boosting) but you can eq peaks(pulling them down). So moving your speakers away may smooth out the response. It could also just move some of the peaks and valleys to different frequency ranges. Hard to say as every room is different. It would also be worth turning audyssey off and sweeping in stereo(2.2), and take a few in “direct” too just for fun. Once(if) you get a good response with delay and moving your mains, run audyssey again. Hopefully it has less “work” to do. I’ll check in later...

 

[William Lemmerhirt]

And sees that's why I was suggesting our more experienced ones chime in says the humble grasshopper!

Lol! I may be more experienced but that doesn’t necessarily make me smarter! Lol

 

[mtrycrafts]

I would check your receiver's manual and see if the LFE to your subs can be assigned different crossover frequency, like 80 Hz or perhaps a bit above, as well as the roll off slope to 24 dB or higher per octave. This will certainly eliminate or drastically reduce the above 80 Hz response from the sub.

 

[William Lemmerhirt]

I would check your receiver's manual and see if the LFE to your subs can be assigned different crossover frequency, like 80 Hz or perhaps a bit above, as well as the roll off slope to 24 dB or higher per octave. This will certainly eliminate or drastically reduce the above 80 Hz response from the sub.

This is definitely a good idea to try.

 

[lovinthehd]

I would check your receiver's manual and see if the LFE to your subs can be assigned different crossover frequency, like 80 Hz or perhaps a bit above, as well as the roll off slope to 24 dB or higher per octave. This will certainly eliminate or drastically reduce the above 80 Hz response from the sub.

Well doubt if the avr has but an LPF of LFE for the LFE channel particularly. Redirected bass and different speaker/sub crossovers would be different....