@grislybutter ,
It sounds good from the sweetspot. From everywhere else, it’s a mess. It sounded significantly better with one sub.
on this, it would make a big difference to me whether the SQ in the sweet spot was SIGNIFICANTLY better than before. If it was, I’d probably say it was a compromise/sacrifice I’d make. But that would be me in my listening room.
Because of the room and furniture, I have no way of placing the subs anywhere else, other than further to the right and left 1 or 2 feet.
I have never claimed to be an expert with this stuff, but I would think this might make things tough, as I am thinking placement/location is probably critical I cannot tell from your picture whether the subs are to the rear or to the front of your speakers, and I am sure that this might factor in to the SQ result. When you were a one sub family, where was your one sub located? Quite a long time ago I posted a question about subwoofer location (I only have one sub) and a link provided in a reply I received strongly recommended two subs (much like you were acting on) and suggested that the desired location would be in the rear of the room versus in the proximity of the speakers.
"get a high pass/low pass filter"
We’ve been over this ad nauseam, so I’ll try not to be overly redundant . . . you already have LP filters built into the subs, and I did see that you are waiting for a HP filter in the mail to try out. Pros and cons: the sub will produce bass up to a certain hZ (probably not an absolutely clean chop off at that frequency) and then the midrange drivers of your mains will take over at theoretically where the bass from the subs stopped/another pro (imo) would be using RCAs versus speaker wire to connect the sub, which, among other things, MIGHT allow you to find more flexibility in locating your subs. But one con I see is putting something else in the signal path between your preamp and amp (assuming that is how the HP you are waiting for hooks up).
"don’t have any overlap in the bass"
"don’t add a high pass filter to a full range speaker?"
On this: I just don’t see how a whole lot of overlap between the mains and the subs could be a good thing. I’ve already said that I know I am not an expert on this subject, but that just SEEMS to defy all the logic that I had previously been exposed to. But I have had my preconceived notions debunked here on A’gon before. As far as not using a HP with a full range speaker? Going back to my preconceived notions: I would have been inclined to live in the camp that wouldn’t try to integrate subs with good full range speakers that were capable of getting down into the low frequencies. As a matter of fact, and this goes back to about 30 years aago, I seem to remember when I set my subwoofer based system up that the prevailing logic was, at the time, subwoofers were to augment two way speakers. I’ve read enough here on A’gon to know that if that actually was truly the "prevailing" logic, it no longer is. BUT: I would think that if one was running sub(s) with full range speakers, it would be important to set the lowpass filters on the subs low enough so that the mains and the subs were not reproducing the SAME huge range of low frequencies. And I think I remember you saying that the low pass on those subs only cuts off as low as 80 hZ? Meaning that your subs are going to try to reproduce AT LEAST from 80 on down. And since your mains are rated down to 50(?), even if they are not making it honestly all the way down that low, that still seems to me to be a recipe that calls for a HP or a crossover.
Attached is the current setup. I still don’t know if the sub is supposed to get full signa as before or just left or right.
Although I don’t recall this method being suggested before in your thread, I would THINK that the full signal going to the binding posts of your speakers would pass on (after your speakers) to the subs.
I know a lot more than the beginning of this thread. But still not enough to make meaningful improvements. High level vs low level; high pass filter or low, no filter, I still don’t see the obvious preferences.
Well, knowledge comes from experimentation--both successful and unsuccessful. You’ve tried high level and low level, and when you get the HP filter I assume you will try low level again (with high pass), and as far as
high pass filter or low, no filter,
your subs utilize LP filters and you have not yet used a highpass filter. But I will be waiting to hear how that works out for you. Staying tuned. . . .
go back to what you liked. Enjoy the music, not the gear.