Sub placement room calculator - Home Theater Forum and Systems - HomeTheaterShack.com

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post #1 of 14 Old 07-16-13, 05:08 PM Thread Starter
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Sub placement room calculator

It would seem to me with the advances in technology that it would be relatively easy to design a virtual calculator to determine the best placement for a sub.

We would put in our room measurements, then the automated/vitual room (with a sub in the diagram) would appear & as we drag the sub (click & drag with your mouse) aroung the room, we could see the predicted room responce graphed below the picture.

Have not heard of a program like this, but it would seem like a very nice tool that should be fairly easy to develope for a computer savy person.
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post #2 of 14 Old 07-16-13, 05:55 PM
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That would be awesome! And would beat crawling around your room like a lost dog trying to find the best sound. I'm sure someone may read this and make millions off of your idea one day! Lol
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post #3 of 14 Old 07-16-13, 05:58 PM
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Agreed, that would be nifty. Maybe have the sub turn from red to green as you go from bad to good positioning

But then, where would the challenge be...


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post #4 of 14 Old 07-16-13, 06:05 PM
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That is a good idea! Ya it would take all the fun out but for those with less experience and know how it would be a great advantage
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post #5 of 14 Old 07-16-13, 06:24 PM
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Re: Sub placement room calculator

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pddufrene wrote: View Post
That is a good idea! Ya it would take all the fun out but for those with less experience and know how it would be a great advantage
There was such a program from RPG but, while it was not designed for subs, it was certainly applicable. Another one is CARA.

You can look 'em up. ;-)

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post #6 of 14 Old 07-17-13, 08:52 AM
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Re: Sub placement room calculator

Too many variables.

Furniture, windows, doors, floor coverings, room openings; reflective/absorbtion properties of the stuff in your room will change the optimal positioning.

You can use REW or similar software to analyse your specific room, but no on-line generator will do any better than the spreadsheets that already exist.
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post #7 of 14 Old 07-17-13, 09:39 AM
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Re: Sub placement room calculator

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cubiclecrusher wrote: View Post
Too many variables.

Furniture, windows, doors, floor coverings, room openings; reflective/absorbtion properties of the stuff in your room will change the optimal positioning.
Actually, all that can be factored into CARA.

Quote:
You can use REW or similar software to analyse your specific room, but no on-line generator will do any better than the spreadsheets that already exist.
Yes. Measurement is better than an educated guess.

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post #8 of 14 Old 07-17-13, 11:35 AM
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Re: Sub placement room calculator

I can't imagine any calculator being able to take into account all of the variables that have a major effect on bass respone in a particular room. Unfortunately, ear to the ground is the only reliable method for evaluating placement options.
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post #9 of 14 Old 07-20-13, 10:01 AM Thread Starter
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Re: Sub placement room calculator

I agree that there are many variables to take into account. I'm just saying that basic placement (front, back, side, distance off wall) options could be identifed & further fine tuning could occur from there. My sub weighs 150 pounds!

I could see (if this kind of program was incorperated into an AVR) some kind of test tones being played which could be anaylized to help identify the sonic signature of the room. From there the program could continue...working off the on screen display. Maybe the next addition for Audessey.

Last edited by Tonto; 07-20-13 at 10:06 AM.
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post #10 of 14 Old 07-20-13, 12:07 PM
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Re: Sub placement room calculator

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koyaan wrote: View Post
I can't imagine any calculator being able to take into account all of the variables that have a major effect on bass respone in a particular room. Unfortunately, ear to the ground is the only reliable method for evaluating placement options.
Actually, CARA is quite impressive but, to take advantage of all the variables, one has to supply it with all the construction and design features of the environment and speakers. This is (or can be) accomplished with providing the info in a detailed CAD model of the room and contents and of each of the speakers. Even then, the calculations on a speedy computer take a long time. The few times I invested the effort in it, the results were informative and quite predictive of the measurements. OTOH, the measurement procedure is faster.

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