Building A Professional Recording Studio - Part 8 (TESTING HVAC baffle box)

[@schance1666]

incredible difference. thanks a lot for taking the time to do these tests and vids.

[@georgephilis]

Thanks so much for these videos, extremely helpful and unbelievably very-well made in terms of sharing everything with us down to the smallest details. I plan to watch the entire series all over again as I get ready for my build. Well done and good luck!!!

[@beatarcheologzt]

Dude this content has been very pleasing to watch. Thank you for all your hard work in not only doing the construction but filming and editing. Cheers from Vancouver B.C.

[@AndrewEade]

Hi Weezna. Interesting experiment. I do want to point out two things though for anyone else looking to do this. 1. It is ESSENTIAL to calculate the room volume, number of air exchanges required per hour, and hence the size of the openings into, and out of the box. Without this your system will be out of balance and you may even be causing a health risk to those in your room. 2. Best practice is to double the area of the opening out of the box from that into the box. I.e. If the duct going into the box is 6” diameter, it’s gonna need to be about 8” diameter out of the box. Again this should be based on your CFM calculations. You won’t be able to do this using flex duct though of course, but rather would need to build the box and line it with duct liner. Be sure to coat any exposed edges of the duct liner with sealant to prevent particulate release from the fiber glass. Remember - you, and all of those in your room will be breathing this air for many hours at a time. Feel free to message me if I can be of assistance. Cheers!

[@mitheshshetty]

@Andrew Thanks for your insights. I am planning to build 2 similar boxes for my home theatre. However I am not planning to connect the ducts to my HVAC, instead I am thinking of connecting an intake and exhaust fan on the end that’s inside my home theater and the other end will be outside my home. Do you have any thought or feedback on this setup?

[@GregoryGuay]

What if the flex duct goes from 6 in supply to a 12in inside the box and then a 12in output?

[@jcfitch3194]

Great video. Very much applicable to DIY soundproofed home theater as well.

[@mirroremageentertainment4924]

Weezna, you've done a great job on explaining your baffle box. You truly are a very talented. I hope that your studio brings nothing but pure joy and Success. As ALWAYS we at MIRROR EMAGE ENTERTAINMENT wish you NOTHING but Success.

[@petercorrigan9645]

Very helpful ,thanks for putting in the time and effort to help others out :-)

[@psdillon]

Big thumbs up for attempting to measure. There's a lot of talk on the net about duct silencers but very few numbers! I'm curious about wind noise, perhaps in your final video you could hold up a sound meter right at the opening with HVAC turned on?

[@rosma596]

Thank you so much for this video, very helpful

[@bentyreman5769]

impressive results

[@aarongabbard]

I hate you...because I love you :) I'm so hooked on your videos!

[@beatarcheologzt]

5:31 A little heads up next time. Almost blew my speakers out lol

[@CT-vm4gf]

Wow I’m highly impressed! I’m up to part 13 of the build but something came to mind, I’m just wondering if you’ve built a filter into the A/C returns? I couldn’t see it anywhere.

[@lotalot7444]

thanks

[@oplkfdhgk]

That's very nice :) big difference :)

[@tubeMonger]

Thanks. Now I know how to make my mining rig quiet.

[@frnx0077]

awesome job!! Was just wondering the sides of your baffle boxes, because its one large piece of wood, would it not became a bass diaphragm? Rezonator. Do you think if I cut the large side panels into smaller pieces and have braces to break up the larger side panels, would that not reduce bass transfer? I am doing research, I have to build this in the next couple of weeks. Thank you for this vids. GREAT JOB!!!

[@frnx0077]

subscribed and liked!

[@georgegyulatyan3263]

Great demonstration! Thank you! I wonder how effective the loss is at lower frequencies say below 125Hz?

[@konstapelwalander]

Impressive!!

[@ahmoib]

Watching and injoying 😊

[@jawashasalan56]

Very nice and helpful video. Im also planing on building a miniature version of that for a 20cm Ø Vent Hole on the Wall. Though it's from a kitchen and thus i am also concerned about high pitch noise which i suppose will also be covered with fiberglas insolation?

[@hansummm]

Thanks. I think we're good on the on the baffle boxes though. Where are you with the build?

[@GregoryGuay]

Can anyone recommend a great vent register for the box/room?

[@claytonlevibrown]

I def. wldn't want fiberglass inside my vents for breathing concerns. the box seems to do the trick. why didn't they built those types of things in my house. I have a bit of an obsession with sound myself and found this video the other day after seeing another of a similar type.

[@piesdescalzos27]

very nice video. I'm curious on how much reduction would you say it achieved, about 25-30 dB? I think the STC curve is steeper, yes?

[@shawnkurtisTV]

😱😱 man.. time for me to get to work!

[@parodyinc8802]

hey, haven't caught up yet so idk what the final result is but I have a question. Why not add an additional baffle box inline that uses acoustic foam? that way you get the best of both worlds..

[@jawashasalan56]

You sort of forgot one crucial information: How much better the Air Flow got. Are those the same fans you had on your first setup?

[@jakewalker2517]

Quick question - what was the estimated TL in db between the example where you were just playing the speaker through the long insulated duct and the example where you played it through the baffle box? It looked like the duct alone provided about 27 db of transmission loss.

[@oplkfdhgk]

How much does it restrict the airflow? :)

[@rangabatistudio5010]

Watching am happy sir

[@buckinjb]

Question - What AC unit are you using for the studio? Also, is it a separate unit from the house system? TIA.

[@recmydream]

I am sorry)) Did you made this isolation for that acoustic that you demonstrate?))) hilarious))))))))))

[@Mythbuster42]

I Made Buffle box just like you, but i got humming sound from the hole.

[@rangabatistudio5010]

Am India sir odisha bargarh distic. And biswanath suna

[@RecordingStudio9]

Great results. Since the tube internal surface is not smooth, sound bouncing will just scatter and reduce the transfer of sound, as we observed. I got a similar result with my build kzbin.info/www/bejne/oavdmIawrLuVqqc

[@adrianwagner336]

and then i went ahead and typed this comment

[@Anton-du-Fleur]

Baffle box is very likely to increase the static