Speaker Placement Video

[Poppyhome]

Originally Posted by metaphacts

MASTERs as with any well developed set up process is a discipline. Placement decisions, while subjective, follow particular guidelines.

The video, not done by Bob, shows numerous incorrect aspects of the process. It is clear that the author of the video is either having a difficult time explaining or has not a clue as to why things happen in the process.

Misinformation/ incomplete information are the culprits of more wasted money in this industry than any others, imo.

As always, ymmv.

Thanks for shedding light on the subject.

Ron

[bodiezaffa]

Originally Posted by gadawg

I stopped watching 5 min in. Got bored.

George

[bodiezaffa]

Originally Posted by metaphacts

MASTERs as with any well developed set up process is a discipline. Placement decisions, while subjective, follow particular guidelines.

The video, not done by Bob, shows numerous incorrect aspects of the process. It is clear that the author of the video is either having a difficult time explaining or has not a clue as to why things happen in the process.

Misinformation/ incomplete information are the culprits of more wasted money in this industry than any others, imo.

As always, ymmv.

You know, one of things I hope to checkoff my Bucket List is to have Bill aka metaphacts, come to my house to set up my Amati Futuras!!

[Masterlu]

Originally Posted by bodiezaffa

You know, one of things I hope to checkoff my Bucket List is to have Bill aka metaphacts, come to my house to set up my Amati Futuras!!

Anything is possible...

[metaphacts]

Originally Posted by Masterlu

Anything is possible...

Your memory is strong Ivan.

The owner of my most recent WAMM installation cracked one of those, among a number of very special bottles, to celebrate the completion of his system.

[metaphacts]

Originally Posted by bodiezaffa

You know, one of things I hope to checkoff my Bucket List is to have Bill aka metaphacts, come to my house to set up my Amati Futuras!!

Thanks for the compliment. I do not set up Sonus fabers any longer as you might imagine.

The guy you want on that bucket list now is Will Kline, Sonus faber's North American Brand Manager.

[Puma Cat]

I stopped after 5 or 6 minutes of him bloviating and speaking about things that are not central to the subject.

The presenter would do well to take a basic course in teaching or instruction, his content is poorly framed intellectually, and the content is presented even more poorly.

One of the key things that is missing is he is trying to tell you WHAT to do without providing the WHY behind it. The problem is the WHY provides context for the viewer to drive true understanding of the principles, and thus drives INSIGHT into what ACTIONS need to be taken.

Without the WHY, its just a set of steps that the viewer does without knowing why they are important.

I spent over 10 years teaching very complex best practices, data analysis, and statistical disciplines to PhD-level scientists and engineers (Design for Six Sigma).

If I had the curricula at hand, I'm pretty confident could present this in 5 minutes or less and not waste the viewers time.

[Puma Cat]

Originally Posted by Antonmb

Fully a third of the video is the guy pontificating on the importance of speaker positioning, and when he finally gets to it, the process is poorly and inaccurately described.

Ya got that right, Tony!

[Puma Cat]

Originally Posted by metaphacts

MASTERs as with any well developed set up process is a discipline. Placement decisions, while subjective, follow particular guidelines.

The video, not done by Bob, shows numerous incorrect aspects of the process. It is clear that the author of the video is either having a difficult time explaining or has not a clue as to why things happen in the process.

Misinformation/ incomplete information are the culprits of more wasted money in this industry than any others, imo.

As always, ymmv.

The missing "WHY" is the operative term here, Bill. Great comments, thank you.

[Puma Cat]

Speaking of speaker set up, some of you may remember this study I did to integrate my REL sub into my 2-channel system. It's a statistical approach called "Design of Experiment", aka DOE. This approach lets you analyze multiple factors simultaneously, and determine which ones, with statistical power, influence the desired result, in this case, real-time in-room frequency response.

In this DOE, I originally had 3 factors, sub Gain, sub crossover (both continuous factors) and bass port foam plug in/out (a discrete factor). Turns out the only two that were statistically significant were the sub gain and X/O. There was also a statistically signifcant interaction between sub gain and sub crossover (the plot at upper right)



And the result: the blue line is my real-time in-room response before, and the green line is after optimizing the sub settings for integration of the REL for improving bass response. You can also see I was able to flatten out a mode that resulted in a significant ~8 dB peak at 70-80 Hz as well.



Here is a 3-dimensional "surface plot" of a 155 Hz peak based on what settings the factors were at...


Data. Science. DOE. All good stuff.