Garden room/cinema plan/build with pics

[HOF]

Hi all

so my cinema build had slowed down a little recently due to lack of motivation but thanks to hours reading on here every day im back motivated so thought id start by posting my plan.

this cinema will also double up as a guest room at the bottem of my garden.

the log cabin/ shed is all built im just going through the process of filling any gaps with no more gaps. My insultaion should turn up next week at which point i can get cracking again.

At present the only equipment i have is the ps3 and AV rack but will be buying at the end of january. Most likely i will be buying from here to save myself a few pennies : )

The back wall will be black with a fixed screen and the cieling will also be black. There will be spot lights 12 inches from the floor down both of the sides.

Just wanted to share with you.

[The Prof.]

What is the size of the room?
You're showing the L & R speakers right into the corners..This is not a good location for them..
Do you have enough width in the room, to move them away from the side walls?
Also, what size screen are you considering to put up?
Should be an interesting project..

[IWC Dopplel]

Good luck

[HOF]

Hi there

The room size is 10 x 10 feet so only small.

I was looking at a 6 foot diagnal fixed screen as i believe that will be the most i can get from the projector at that distance.

I could possible move the left an right speakers closer in so will look into that : )

[The Prof.]

A square room is going to present all sorts of problems, acoustically speaking....
I realize that you don't have enough room to put in a false wall to change the room ratio..so you are going to need some heavy dampening in that room..
To tame the standing waves and resonances, you will need bass traps in all four corners and some acoustic panels on the walls at first and second reflection points..
This will help to some degree, but still not perfect..

Screen size should be OK..

[HOF]

oh cr+p. I actually ordered and paid for a different cabin but that was what turned up. i ordered a 20 x 12 foot.

The company i ordered from has disapeared so was unable to get money back so i cut my losses and just got on with it.

How much will bass traps cost me?

and where can I get accoustic panels from?

One more thing what is first and second reflection?

[HOF]

sorry forgot to ad.

How may base traps should i use?

[albriscoe]

Originally Posted by HOF

How much will bass traps cost me?

and where can I get accoustic panels from?

One more thing what is first and second reflection?

Its loads of fun this cinema room mularky innit

[crazyal]

Originally Posted by albriscoe

Its loads of fun this cinema room mularky innit

Every time I tick something off the Cinema Room To-do List, another thing creeps on there. Actually more like 2.

Good luck with the project HOF, I'm sure somebody will be along soon to answer your questions

[The Prof.]

Originally Posted by HOF

oh cr+p. I actually ordered and paid for a different cabin but that was what turned up. i ordered a 20 x 12 foot.

The company i ordered from has disapeared so was unable to get money back so i cut my losses and just got on with it.

That's terribly bad luck..That size cabin would have been ideal..

How much will bass traps cost me?

That depends on what you use..
The cheapest way is to make them yourself..All you need is some semi-rigid fibreglass sheets, or some Rockwool and a simple frame and covering to fit them into..
I've made several myself, and they work well..
If you decide to go this route, I can help you with the making of them..

To buy commercially made traps can get expensive and they're no better than what you can make yourself..

and where can I get accoustic panels from?

Again..make them yourself..If you have any basic carpentry skills, you won't find it difficult..
I also made my own..

One more thing what is first and second reflection?

Reflection points are where the sound waves from the L & R front speakers, bounce off the side walls..
You can determine these points by having someone slide a mirror along a sidewall (level with the speaker) While you sit in the centre seat..
They move the mirror along the wall, from say the left speaker, until you can see the reflection of the speaker in the mirror..
This will be the first reflection point and is where you would place an acoustic panel..

Then they would continue sliding the mirror along the wall further, until you can see another reflection of the other speaker..
This is then your second reflection point..

I hope I've explained that clearly enough for you..Just let me know if there's anything that's not clear..

[The Prof.]

Originally Posted by HOF

sorry forgot to ad.

How may base traps should i use?

You will need 4..One in each corner of the room...and preferably floor to ceiling in height..

One other thing I forgot to mention before..
Because you have a room that's short in length, soundwaves are going to bounce readily off your back wall and you will need acoustic panels on there as well...
In fact the more acoustic panels you can put in the room, the better, to try reduce standing waves and resonances as much as possible..

[HOF]

Thanks for that prof. I wouldnt have offered help as I will end up taking you up on that

Would you look at 7.1 or 5.1 for that size room?

I never thought there would be this much involved.

[HOF]

good news is my speaker wire and insulation turned up today i need to get cracking : )

[The Prof.]

Originally Posted by HOF

Thanks for that prof. I wouldnt have offered help as I will end up taking you up on that

Would you look at 7.1 or 5.1 for that size room?

I never thought there would be this much involved.

HOF..My cinema room is 15' long and I have a 7.1 AVR..but I only use it as 5.1 system..In that length, it's not necessary to go to 7.1, so in your situation, 5.1 will be fine..

Acoustically treating a cinema room is an art in itself, and even the best acoustic materials and panel placement, will be a compromise at best..
The general rule is.."The more the better"..

I'm only too happy to help if I can..I received a lot of help from experienced people when I first started in home cinema (approx. 20 years ago), so I'm only too happy to help others get their start..

[HOF]

Prof

Thank you so much if you would help with advice etc that would be great.

So ill stick with 5.1. I havent planned what im buying at all yet as i will probably buy off here and money is tight untill end of january. but by then the room should be ready.