Ep. 22 - Room Treatments Part 2 of 4! The Real Upgrade! Acoustic Panels | Home Theater Gurus 

Thanks you so much! I guess one day soon I should do a "who am I" video :)

Thanks Nick!

You're very welcome!!!

Thanks for this. I'm not the wife but I still like looks :)

Thanks! I like to educate people on the hobby too as there is just so much snake oil and misconceptions in the hobby. It's so easy to have no clue what to do and not to do.

You're very welcome! Did you say Shiva as in Adire Shiva? I use a Adire dpl 12 In my living room!

​@@hometheatergurus - LOL, yes it is an original from back when Dan Wiggins was the primary (2001).

Yep, they will absorb well depending on how thick they are.

Thank you very much! As for using materials like compressed fiberglass uncover the health aspect in the video on absorption. Let's just say I made my bedroom set as I like wood working and my headboard doubles as a large absorption panel. Makes for a very peaceful sounding room for sleeping!

Thanks. I did mention some foam is decent and I also explain how to read specs.

hast du das Problem inzwischen lösen können? :)

@@descent8275 ich habe mittlerweile die Lautsprecher gewechselt, der Bassreflex Port befindet sich bei diesen nun vorn und unten und nichtmehr hinten. Das hat in meinem Raum dazu beigetragen, dass die Raummoden nichtmehr so stark angeregt wurden und die Nachhallzeit nun weit unter 1 Sekunde ist. Dazu habe ich noch entsprechend per EQ die 43hz Mode heruntergeregelt

easy way to level match your sub to your speakers, 1. Set centre speaker to small and run a full range sweep for that speaker. 2. look at the frequency response and adjust the subwoofer up or down in the avr speaker level until it flows with the frequency response of the speaker. or 3. use a spl meter and adjust the subwoofer level using the internal test tones on your avr to the same level (or a few db higher) than your centre speaker

Sounds like you want to get all of your subs output matched. If so go watch episode 8 on gain matching.

Sorry... on questio No. 1 is "attack".. Txs

They say plastic will reflect some frequencies. It’s best to use an acoustically transparent fabric front and back of your panels.

Use 4inch or thicker depth Rockwool. 2inch is too thin and not broadband absorption. It doesn't cost much more to buy 4inch thick rockwool. Plus use acoustically transparent fabric. Not plastic to wrap around the wooden frames of the panels.

I would get some absorbtion panels and disguise them as artwork. put family pictures or something on top of the panel

I wouldn't use all absorption unless it's needed. Part 4 will explain this. But in short all absorption will definitely kill "the vibe" you wish to keep which is why all absorption isn't the go to method. If you're going to use curtains I'd use thin curtains That are as acoustically transparent as possible and hide acoustic panels behind them. As mentioned above panels can be covered in fabric to be art.

@@hometheatergurus Thanks for the insight! was thinking of curtains so I can pull it in front of the wall and pull them back when I am done watching. If I were to use a thick fabric ( with no acoustic panels) will it dampen the sound a bit ? Thanks again

@@shashi.talkies I don't usually recommend this old diy trick as it's not as good as panels but it can help. You can use curtains with moving blankets behind them (also sold as sound blankets same thing basically and cheaper ) and make sure to keep thick folds in them to absorb as low as possible.

@@hometheatergurus Thank you for your suggestion!

Any backing material will be more reflective than the insulation product itself, so put it towards the wall, or better yet remove it and put an air gap between your panel and the wall. If the product is colored on one side, that is a negligible difference at most vs normal "yellow" coloration, but if it is foil or paper lined on one side, then against the wall or remove and put in an air gap.

you'd have to look at the coefficient specs as we discussed in the videos. I'd suspect it's not going to that great.

@@hometheatergurus .8 at 250?

@@pastaman6099 I'd be leary about that as that sounds too good to be true for 1/2". Maybe 2" -4" as how well something absorbs lower frequencies is directly related to it's depth of course internal diaphragms can help, but that's another topic. Even the better products like compressed fiber glass would be maybe .4 at 250hz with that thin of a panel.

@@hometheatergurus does its density help?

no.. you can't electronically remove a wall. Noise cancelling headphones monitor outside noises and play them out of phase to cancel out. They don't change the source. Maybe one day auto systems will be able to measure your room reflections and then compute them in real time and play them back out of phase at the correct time but then those sounds it would play also have reflections so you're causing more issues, and then there's how many reflections in a room. You're talking some futuristic processing power but who knows in 20 years that may exist.

I'm familiar with Trinov but no even rooms by quest and Erskine that often have run altitude have full room acoustic packages because a processor can not fix reflections. Reflections are present because we have walls and a source of sound. We can not electronically remove them. It definitely does have state of the art mapping and sophisticated eq that when properly used can be awesome but room without treatments will still pale in comparison to a budget room with proper treatments. A room will not sound good just because it has a Trinov and good speakers. No room treatments will equal a poor sounding room.

Oh. Yes, that’s what I said though. I didn’t say it was a solution. I said it actually has functions to correct for reflections unlike all other processors. It actually does work better than I thought it would too which is awesome technology. My original room was designed by the EGroup with Quest but now switched to Quested audio with Trinnov processing and mix of DIY diffusion/absorption with Walter (TheLion/Cinermax) doing the Trinnov calibration and Peter helping with room design. When Walter came in to do the Altitude calibration/tuning he left me the files for no processing so I could flip back and forth to show the difference and it’s crazy what it does by itself without the treatments in place. He has to come back after I get all the panels in place to do the final ear tuning. That’s his secret weapon for sure!!! Walter has a magical set of ears that allows him to use each and every feature of the Altitude to his advantage. Just so I make make point clear, the Altitude does do reflection processing that is proprietary to it and it does actually work well but it is NOT a replacement for treatments. It just takes the tuning even farther than other processors which will help now that more and more companies are getting into the 16/16+ channel game. Again, really enjoying someone teaching the correct sciences for those that can’t go to one place to get this information without hours of searching. Doing a great job seriously.

@@alford35 thank you very much. Glad you're enjoying them!