Accoustic air vent for shed/cabin.

[kpnuts]

Hoping for advice/opinions.
I have a newly built shed with 70mm studwork which has been filled with rockwool in the walls and celotex in the roof. I plan to add soundbloc plasterboard too soon. Even without the plasterboard I am amazed about how much quieter it is already! So the Rockwool is helping. I have a vapour barrier added too, as I want to use this with a small heater in winter. I won't use every day but a few times a week.

In my quest to make as sound proof it as much as possible (for mini cinema), I am concerned about ventilation. There are no ventsat all, no windows and a solid door. The room is 4m x 3m and 3m high. My question is, should I risk the little but important soundproofing I have by introducing an accoustic air vent
http://www.soundservice.co.uk/acoustic_vents.html
Or, should I not bother at all with a vent? And just see how it goes, open the door from time to time and have a dehumidifier?

Any thoughts?
Cheers

 

[Tigercubrider]

The trick of soundproofing is mass and no holes.
As soon as you introduce a vent you make a massive hole

A tiny hole lets a lot of noise out

I would be tempted to use a split aircon unit- possibly on sale at this time of year?

 

[kpnuts]

The trick of soundproofing is mass and no holes.
As soon as you introduce a vent you make a massive hole

A tiny hole lets a lot of noise out

I would be tempted to use a split aircon unit- possibly on sale at this time of year?

Thanks for responding. I havent thought about that before. So it can heat, cool and dehumidify. Seen one for £400.
My concern would be the days I'm not using it, is there a risk of mould with no fresh air?
So you think the accoustic vent is a big no no regardless?

 

[kpnuts]

The trick of soundproofing is mass and no holes.
As soon as you introduce a vent you make a massive hole

A tiny hole lets a lot of noise out

I would be tempted to use a split aircon unit- possibly on sale at this time of year?

Hi I'm a little confused as I just had a look at split units. From what I can see you need to have a hole through the wall anyway to connect tubes from the inner unit to outer units, so how is this any different?

 

[Tigercubrider]

The hole is for a hose (2) that carries liquid
A vent allows air to pass through

You'd ensure that the hoses were properly sealed in

 

[Tigercubrider]

We converted a mate's garage into a studio and it's very efficient. We didn't bother with vents or a/c
It's about 8 feet by 20 at a guess with a lower than normal ceiling but not by much.

It gets stuffy when there's 3-4 people, all the computers going and some amps after 90.mins but by then somebody will have gone to the loo, gone for a fag etc... there are two sets of doors

One thing that you might want to address- 4x3x3 is nearly a cube. That's about the worst shape for sound
Make sure that you knock off some of the 90° corners and add some acoustic treatment to the walls

 

[kpnuts]

We converted a mate's garage into a studio and it's very efficient. We didn't bother with vents or a/c
It's about 8 feet by 20 at a guess with a lower than normal ceiling but not by much.

It gets stuffy when there's 3-4 people, all the computers going and some amps after 90.mins but by then somebody will have gone to the loo, gone for a fag etc... there are two sets of doors

One thing that you might want to address- 4x3x3 is nearly a cube. That's about the worst shape for sound
Make sure that you knock off some of the 90° corners and add some acoustic treatment to the walls

Great. Thanks for the advice. In the main, it will be only 1 or two people at most. So I will see how it goes and first and see from there.