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[EGMHQ]

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[EGMHQ]

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[EGMHQ]

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[Soundman2020]

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Why? What happened?


- Stuart -

[EGMHQ]

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Why? What happened?


- Stuart -

Nobody replied... I understand post was only up for a few weeks, and being xmas etc... We just finished framing today, onto ceiling tomorrow. Figured it`s too late to hear any changes or ideas now!?!?...

Happy and confident i am on the right track tho - have garnered a huge amount of knowledge from this site. I had lenghty chats with an acoustic "consultant" last week - he made a few changes to the plan, which will end up saving me a whole heap of grief!

I`m sure i`ll have some questions as the process rolls on.

Cheers
T.

[Soundman2020]

We just finished framing today, onto ceiling tomorrow. Figured it`s too late to hear any changes or ideas now!?!?.

It's never too late! Especially with first-time studio constructors, as there are so many ways that things can be built wrong. But since you deleted all your posts with the info that I'd need to be able to help you, there's not much I can do...

... chats with an acoustic "consultant" last week ...

IS that why you deleted your posts? Because you thought he had addressed the issues you brought up, so you didn't want anyone else to see them?

Also,. I'd be real interested to know of that "consultant" contacted you because of your posts on the forum. If so, please PM me about that. I've been seeing evidence lately that one (or more) rather unscrupulous forum member(s) is contacting newcomers to the forum and offering to "help" them for a fee .... if that's the case, then I'd urge you to be very, very careful. We do not allow any forum members to offer any products or services through the forum. It is one of John's most basic rules here: he does not want the forum to be used by others for promoting their products or services. We do not want people of questionable ethics and low moral standards to use John's forum as amarket place! Occasionally John might give someone permission to do that under very special circumstances, and it is OK for someone to mention that they have left-over materials or equipment that they want to sell, but that's it.

If you (or anyone else) get a private offer of products or services through the forum, then firstly please ignore it completely, and secondly please let me know so that I can deal with the offender. Ignore it, because the quality of any such "product" or "service" would be highly questionable to start with: After all, since the person doing that obviously does not have any morals or ethics, it's very likely that the service or product on offer is pretty lousy...

There are many forum members who also are manufacturers of acoustic products or providers of acoustic services, but they are all very ethical people, and are only here with the desire to help forum members, not to flog their products. They fully respect John's anti-spam rules, and never try to benefit from it personally.

So beware of anyone who offers you acoustic services or products through the forum: They are NOT endorsed, promote, or approved by John.

I`m sure i`ll have some questions as the process rolls on.

Great! But it would be good if you could restore your original posts, or at least add a detailed description of where you are right now, with photos, and clear diagrams of what you plan to do!


- Stuart -

[EGMHQ]

O.k... Will re post.

And no - it was someone i found thru a friend of a friend. No dodgy forum goings on.

I`m building this studio on the Central Coast of Australia. My main gig is private music tuition... Hence having the small waiting room when first enter. That is my bread and butter. I say that because i know it might seem strange / a waste of space having a waiting room to some...

I have been scouring this site for 3+ months gathering information - i must say a lot of it goes over my head - but my builder seesm to be on point with it all. The acoustic consultant was a great help - filled me with much more confidence once i had spoken to him. He looked at the original plan, punched some numbers and informed me i would have a large 160hz resonance in the booth. So we ditched the gyprock which was going to be between brickwork and framing which would have created a 20mm cavity around the booth. So no gyprock on the two back walls of booth. I have the option to put gyprock on the walls internally if needed down the track.

The room is 5300mm x 4800mm and 2400mm height. It is double brick. Above me is the guest room of our house which will very rarely be used / wont be an issue when recording. 3 of the walls of my room face the bush. Remaining wall faces under house storage.

I`m wanting to record vocals, acoustic guitars, banjos, mandolins... Bluegrass instrumentation. Very, very rarely will a drum kit ever be squeezed into the booth. No neighbours to worry about sound leaking out.

My major concern is the birds / ambient noise getting IN to the booth / mics. The birds are loud. My weakest point appears to be the existing external window. I have ordered two sheets of 10.8mm hush glass to build a double glazed window in its place.

With the booth, framing has been set 20mm from brickwork. Plan is to fill with rockwool and see how the room is performing with the 10.8mm hush glass panels in. If birds are still creeping in - will have to look at dealing with that thence. If the glass and rockwool is enough, i plan to cover back walls of booth with cloth. Booth wall opposite control room will be 13mm fyrcheck gyprock with 6.8mm laminated glass.

Ceiling is set 200mm from existing ceiling ( only on booth and CR ) filled with rockwool and have a single layer of 13mm fyrcheck gyprock.

Floor will be laminated floorboards.

Wanted to do soffits - but just don`t have the room.

My absolute main concern is keeping the bird noise out of booth - whilst maintaining a great sounding room to record acoustic instruments.

I would like to be able to record a singer / guitarist while listen thru monitors / so isolation between CR and Booth is important to me also.

Ceiling went on today. Will be set tomorrow and start wroking on fitting the internal glass.

Think i`ve covered everything!

Cheers

[EGMHQ]

I have question regarding my A/C

I am thinking of running a line from CR to Booth with an attenuator like this one pictured... So i have some cool air getting into the booth. ( There will already be fresh air coming into booth and CR )



I`m worried about losing isolation between CR and Booth...

Any ideas / opinions on this one?

[Soundman2020]

I have question regarding my A/C

I am thinking of running a line from CR to Booth with an attenuator like this one pictured... So i have some cool air getting into the booth. ( There will already be fresh air coming into booth and CR )

You could do that, but those small, short, straight-through commercial silencers don't get very high transmission loss. Here's the common way of doing silencer boxes for studios:

http://www.johnlsayers.com/phpBB2/viewt ... 0&start=45
http://www.johnlsayers.com/phpBB2/viewt ... 9&start=74
http://www.johnlsayers.com/phpBB2/viewt ... 25&start=2
http://www.johnlsayers.com/phpBB2/viewt ... 42&start=5
http://www.johnlsayers.com/phpBB2/viewt ... 61&start=0
http://www.johnlsayers.com/phpBB2/viewt ... 5&start=98
http://www.johnlsayers.com/phpBB2/viewt ... &start=157
http://www.johnlsayers.com/phpBB2/viewt ... =2&t=13821
http://www.johnlsayers.com/phpBB2/viewt ... 8&start=44
http://www.johnlsayers.com/phpBB2/viewt ... 2&start=16

Part of the concept is a sudden change in cross section at the entry and exit points, which creates large impedance mismatches, then to have a number of baffles that force the air to flow around several "corners": the air can flow freely, but since sound moves more or less in straight lines, it is blocked by the baffles. The interior lining is proper duct liner, which has good coefficients of absorption for the problematic frequencies in HVAC. The box itself is thick wood, with plenty of mass. The end result of all that is much better insertion loss.

- Stuart -