Searching for matching(?) Subwoofer solution

Hello rauliruegas,

       Did you read the responding post I directed to you yesterday 8/15/19?  If not, here is a direct quote addressed to you from my earlier post:
"I agree with you that using better quality subs will only improve the quality of bass reproduced. I think this is true whether one uses a single sub or multiple subs."

     I appreciate, respect and understand the importance of good quality in almost everything, especially in things I decide to purchase or am considering purchasing.  What I don't appreciate, respect or understand is why you believe you made it clear to me, with my own facts and statements, that my system is of poor quality.  I must have missed that deftly executed revelation you so kindly presented to me, using my own words no less.  Well played, mi amigo, well played.

Later,
Tim

Btw, first step/tread on that music quality learning ladders is to attend as many live music events we can, second can be to listen as many other home systems as we can and other truly revelatory thread/step is to listen live music seated at near source position that’s where normaly " seated " the recording microphones ( 1m to 3m. ) and we have to do it not one time but several times.

All those steps are a learning lessons to understand the true meaning of quality in the MUSIC/sound reproduction on each one of us room/systems and at the same time we will use those lessons to through the time be up-dating/grading our system., fine tunning the system.
Again, I’m talking of systems dedicated to listen only MUSIC not along HT option.

R.

@noble100 wrote: "Duke... I was hoping to get your honest opinion on my thoughts on how I understand multiple sub systems function in general as well as my understanding of how bass is recorded on CDs and vinyl."  

In general I agree with what you wrote, so let me just toss out a few comments.
" We all are unable to localize deep bass frequency soundwaves..."  

My understanding is that’s generally true in a room. The figure I use is 80 Hz, rather than 100 Hz. I think Floyd Toole uses 80 Hz. This doesn’t necessarily mean that one cannot detect the location of a sub which is crossed over significantly lower, say at 40 Hz, because crossovers are not brick walls, so upper bass/lower midrange energy can give away a sub’s location if it comes through loud enough. Therefore in my opinion a steep lowpass filter on the sub helps to hide its location.  

"the bass is summed to mono on frequencies below 100 Hz on all vinyl and cd recordings."  

I wouldn’t say "all", but I would say "almost all". (If we’re talking about a Swarm/DEBRA system, a second amp can be added to give you true stereo bass).

"Our brains are able to associate the fundamental deep bass frequencies reproduced by the subs, that are not able to be localized, with the deep bass’s higher harmonic frequencies, that extend well beyond 100 Hz, which are reproduced by the main speakers that are able to be localized. This psychoacoustic association allows us to localize the deep bass in the soundstage, for example the kick drum is located in the rear center and the upright bass is located in the front to the left, which would not be otherwise possible without this psychoacoustic association our brain’s are capable of."

I agree.  

Duke

Hleeid,

Before you do anything I would suggest reading http://www.soundoctor.com/whitepapers/subs.htm I think you will find them very informative.

A question for the DBA folks; How do you get the mids and highs to spread out evenly through the room to match up with the bass at all locations in the room? Also does a DBA affect impact?

Thanks

Duke,

    Thanks for taking the time to review my thoughts on multiple subs. I'm glad you validated my understanding, with the 80 Hz revision, since my thoughts are all reflections of my personal experiences using your 4-sub DBA system.  
    You stated:
"I wouldn’t say "all", but I would say "almost all". (If we’re talking about a Swarm/DEBRA system, a second amp can be added to give you true stereo bass)."

    Is there such a thing as true stereo bass? I'm still a little fuzzy on this issue. I run all my subs in mono and perceive true stereo bass on all recordings regardless of format. This is due to the process I mentioned in my summary, of our brain's ability to associate the fundamental deep bass frequencies reproduced by the 4 subs in mono, that are below 80Hz and not able to be localized, with the deep bass’s higher harmonic frequencies, that extend well beyond 80 Hz, which are reproduced by the main speakers that are able to be localized. This is what I'm currently experiencing on my system that I would describe as true stereo bass.

Are you making a distinction between the perceived true stereo bass that I'm currently experiencing and your mention of "a second amp can be added to give you true stereo bass"?

Also, when I asked you whether the bass is summed to mono on frequencies below 100 Hz on all vinyl and cd recordings?   

You said you wouldn’t say all, but almost all.   On several other threads  no one, including myself, was able to name a single recording on any format containing true stereo bass.  Are you aware of any?


Thanks again Duke,
     Tim