AI guided Room Optimization.

[AJ Soundfield]

When you add subwoofers to a system you become a speaker designer. You then get to design a crossover and find the speaker placement that properly integrates your components.

If you are doing this without the ability to measure individual speaker impulse response and adjust timing, determine crossover slopes and amplitudes then you are shooting in the dark.

This is where the “constantly adjusting never satisfied” syndrome takes over because it’s just never right.

This also creates interesting discussions about fast and slow subwoofers. Properly integrated subwoofers are fast, poorly integrated ones are slow.

Agreed. I would add the biggest issue beyond that is the room and the resonances. Below 50-60hz so called "traps" are complete nonsense, as far as nearly 60 foot long waves are concerned. That's where EQ is mandatory. And if you are a non audiophile 100% scientific approach to electroacoustic reproduction like me, then for the last 20yrs you did this https://www.ioa.org.uk/system/files...le_low_frequency_cardioids_in_small_rooms.pdf
Or you listened to your MoFi records with horrid in room response, because you know, DSP baaad

 

[crwilli]

When you add subwoofers to a system you become a speaker designer. You then get to design a crossover and find the speaker placement that properly integrates your components.

If you are doing this without the ability to measure individual speaker impulse response and adjust timing, determine crossover slopes and amplitudes then you are shooting in the dark.

This is where the “constantly adjusting never satisfied” syndrome takes over because it’s just never right.

This also creates interesting discussions about fast and slow subwoofers. Properly integrated subwoofers are fast, poorly integrated ones are slow.

Well said. I never thought about sub integration that way.

To the point of this thread, using REW and an AI engine to analyze the measurements, you can improve the integration in a very short period of time - without becoming an expert!

 

[a.wayne]

Completely oblivious to the DSP imbedded in your system via recordings and of course there will never be any measurements of your inferior analog conversions showing where "bandaids" would fix. IOW, the typical audiophile system like the 100s, maybe 1000 including shows, I've heard. Don't worry Mr Wayne, no one will ever hear your "No DSP" system, you're safe.

Chelsea > Arsenal , stay tuned …

 

[W9TR]

Agreed. I would add the biggest issue beyond that is the room and the resonances. Below 50-60hz so called "traps" are complete nonsense, as far as nearly 60 foot long waves are concerned. That's where EQ is mandatory. And if you are a non audiophile 100% scientific approach to electroacoustic reproduction like me, then for the last 20yrs you did this https://www.ioa.org.uk/system/files...le_low_frequency_cardioids_in_small_rooms.pdf
Or you listened to your MoFi records with horrid in room response, because you know, DSP baaad

Thanks! You beat me to it. Good paper. I wish he would have included monopole subs as well.

There is a wealth of information out there:
The Welti paper on multiple subs.
Toole's work for Harman.
"Subjective Preference of Modal Control Methods in Listening Rooms" Bruno Fadenza, et all is another good one.
CTA RP-22 is a good resource. Very well written.
SSS (Symmetrical Subwoofer Setup) and CABS.

I am putting 4 high excursion subs in my new theater, placed so they excite the minimum number of modes and also don't become a trip hazard. There are always compromises.

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