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Forum: Dedicated Theater Design & Construction   12-01-2016, 09:16 PM
Replies: 478
Views: 32,951
Posted By Roger Dressler
Hi Mike, I had not tried imposing the...

Hi Mike,

I had not tried imposing the rolloff <30 Hz to see what that would do. When I was running the JBL Bass-Q, it imposed a rolloff below 25 Hz, and I went to some pains to "fix" that with...
Forum: Dedicated Theater Design & Construction   11-30-2016, 12:55 PM
Replies: 53
Views: 37,202
Posted By Roger Dressler
Well, we don't know too much about your plans...

Well, we don't know too much about your plans (which may best be discussed in your build thread...;)). Like whether you want the IB sub to cover the full range up to ~100 Hz, or just the non-modal...
Forum: Dedicated Theater Design & Construction   11-28-2016, 01:18 AM
Replies: 53
Views: 37,202
Posted By Roger Dressler
Just a thought. I'd swap the equipment room with...

Just a thought. I'd swap the equipment room with the IB sub chamber. You'll need a subwoofer on the rear wall to work in conjunction with a front sub to cancel room modes for better bass uniformity...
Forum: Dedicated Theater Design & Construction   11-23-2016, 06:14 PM
Replies: 478
Views: 32,951
Posted By Roger Dressler
As a disciple of the Synthesis curve, I can say...

As a disciple of the Synthesis curve, I can say that the reduction in midbass from ~100 Hz to 500 Hz also has a strong benefit in unmasking bass in the bottom 2 octaves. This is especially valuable...
Forum: Ultra Hi-End HT Gear ($20,000+)   11-10-2016, 04:42 PM
Replies: 313
Views: 10,360
Posted By Roger Dressler
Perhaps a better choice of terms would be...

Perhaps a better choice of terms would be hyperbole. Allow me to illustrate. You wrote:

Emphasis added.
I believe this refers to Alcon SIS, which Alcons describe as follows:

Based on the...
Forum: Dedicated Theater Design & Construction   11-09-2016, 11:23 PM
Replies: 320
Views: 17,132
Posted By Roger Dressler
If you like a good sounding gunfight scene, try...

If you like a good sounding gunfight scene, try The Book of Eli. It brings the house down. :rolleyes: ;)
Forum: Receivers, Amps, and Processors   11-09-2016, 11:05 PM
Replies: 868
Views: 55,883
Posted By Roger Dressler
I'm not sure if I'm understanding the quoted...

I'm not sure if I'm understanding the quoted passages correctly, but allow me to offer a comment.

If you are sending 2ch audio from the HTPC to a surround decoder in a 5.1 container, PLII cannot...
Forum: Dedicated Theater Design & Construction   10-30-2016, 08:29 PM
Replies: 2,857
Views: 150,457
Posted By Roger Dressler
Absolutely. I'm here almost all the time. Say...

Absolutely. I'm here almost all the time. Say when. :)
Forum: Dedicated Theater Design & Construction   10-30-2016, 05:22 PM
Replies: 2,857
Views: 150,457
Posted By Roger Dressler
Such a beautiful house. All the more with those...

Such a beautiful house. All the more with those expansive views! :eek: Magnificent.
Forum: Receivers, Amps, and Processors   10-30-2016, 01:15 PM
Replies: 557
Views: 41,910
Posted By Roger Dressler
Well, in-ceiling speakers can be quite...

Well, in-ceiling speakers can be quite unobtrusive, flush mounted and painted to match. :)

It looks to me like DS is part of the Atmos bundle, whereas PLIIx is a la carte. Dolby told me PLIIx...
Forum: Receivers, Amps, and Processors   10-29-2016, 05:29 PM
Replies: 557
Views: 41,910
Posted By Roger Dressler
Hi Michael, Good to "see" you again, sir. Been...

Hi Michael,
Good to "see" you again, sir. Been a long time!

Cannot tell from that exactly where they will be wrt your ears -- depends on room width/height. My room had an 8' ceiling so I had to...
Forum: Receivers, Amps, and Processors   10-29-2016, 12:07 AM
Replies: 557
Views: 41,910
Posted By Roger Dressler
As it is your plan to add a single pair of height...

As it is your plan to add a single pair of height speakers, they will be just forward of directly overhead (right?) so more easily differentiated from the surrounds than might be the case with 4...
Forum: Dedicated Theater Design & Construction   10-28-2016, 03:04 AM
Replies: 9
Views: 174
Posted By Roger Dressler
Whether square or not, you will get much better...

Whether square or not, you will get much better results with two subs than one. As the room already exists, testing might be useful. Do you have any measurement tools, like REW or the like? Have you...
Forum: Subwoofers, Bass, and Transducers   10-22-2016, 11:59 AM
Replies: 41
Views: 1,672
Posted By Roger Dressler
What I have seen happen is that once the patent...

What I have seen happen is that once the patent holder is presented with prior art, and the prospect of losing a court battle, they drop their enforcement action. The patent technically remains valid...
Forum: Subwoofers, Bass, and Transducers   10-21-2016, 09:16 PM
Replies: 41
Views: 1,672
Posted By Roger Dressler
I'm curious about this statement from post 1: Is...

I'm curious about this statement from post 1: Is this true? I'd like to understand the physics.
Forum: Receivers, Amps, and Processors   10-21-2016, 08:45 PM
Replies: 557
Views: 41,910
Posted By Roger Dressler
Name is Dolby Surround. Function is upmixer. :)

Name is Dolby Surround. Function is upmixer. :)
Forum: Receivers, Amps, and Processors   10-20-2016, 01:11 PM
Replies: 557
Views: 41,910
Posted By Roger Dressler
I placed them at 90 deg to the MLP, front row. In...

I placed them at 90 deg to the MLP, front row. In the next theater, they will be at 80 deg, and aimed toward the furthest seats in the rear row. Direct radiators everywhere. :)

An outboard...
Forum: Receivers, Amps, and Processors   10-20-2016, 12:39 PM
Replies: 557
Views: 41,910
Posted By Roger Dressler
Just to be clear, this is only when using DSU,...

Just to be clear, this is only when using DSU, not a full Atmos soundtrack. The scene I used was toward the end of John Wick, where there is an extended scene in the rain. Sorry, I do not have that...
Forum: Receivers, Amps, and Processors   10-18-2016, 02:27 AM
Replies: 557
Views: 41,910
Posted By Roger Dressler
I do not add speakers for my 2 row setups. Never...

I do not add speakers for my 2 row setups. Never found the experience lacking back there.

Delays work OK, but I'd prefer other forms of decorrelation. At Dolby we liked to use wideband 90-deg...
Forum: Receivers, Amps, and Processors   10-16-2016, 05:52 PM
Replies: 557
Views: 41,910
Posted By Roger Dressler
Yes. I reduced the distance to the rear top...

Yes. I reduced the distance to the rear top speakers a few feet. That adds a few ms delay.

Since I have been heavily involved and imprinted by PLII and PLIIx since 2000, that's what I prefer. I...
Forum: Receivers, Amps, and Processors   10-14-2016, 08:00 PM
Replies: 557
Views: 41,910
Posted By Roger Dressler
Well, I have a paper of that exact same title,...

Well, I have a paper of that exact same title, but slightly later date, as it was presented as the AES 57th International Conference, Hollywood, CA, USA, 2015 March 6–8. It says something a little...
Forum: Dedicated Theater Design & Construction   10-11-2016, 12:20 PM
Replies: 11,544
Views: 1,467,860
Posted By Roger Dressler
Of course. But no one asserted that would be the...

Of course. But no one asserted that would be the case. I was just mentioning the spacing did not have to be the same dimension as the material thickness in order to yield a benefit. The data supports...
Forum: Dedicated Theater Design & Construction   10-11-2016, 10:56 AM
Replies: 11,544
Views: 1,467,860
Posted By Roger Dressler
I do not believe that is true. The spacing can be...

I do not believe that is true. The spacing can be different than the absorber thickness and still make an improvement. But it is not the same as thicker material.
...
Forum: Dedicated Theater Design & Construction   10-11-2016, 10:33 AM
Replies: 11,544
Views: 1,467,860
Posted By Roger Dressler
My thinking is that the key aspect of these types...

My thinking is that the key aspect of these types of hybrid devices is the fall off of absorption above the peak. That's what the wood layer brings to the party. In that respect they look very...
Forum: Ultra Hi-End HT Gear ($20,000+)   10-01-2016, 11:29 AM
Replies: 2,540
Views: 146,944
Posted By Roger Dressler
I think the DEQX (http://www.deqx.com/faq.php)...

I think the DEQX (http://www.deqx.com/faq.php) system would be a better fit to this approach. ;)
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