Would this http://www.gowallpaper.co.uk/saarpor-latex-sound-proof-wall-liner.html
be any use, not cheap either.
I think this acts as insulation rather than absorption so I guess would reflect the sound back? Good for my neighbours I suppose!
No that one is for sound, its does NOT reflect back sound, read about what to put on top of it.
I suggest u get a good understanding of room treatment. Here or elsewhere. Not being rude! My experiments have proved very fruitful for little money. Bass 'light' in room treatment twrms means that bass in particular is not easily absorbed and its reflections cause cancellation. (Think noise cancelling headphones). Bass traps aim to absorb the reflected bass and therefore increases base as well as 'cleaning it up'. A rockwell wall behind speakers might be ideal but clearly aethetics are important so compromise will be inevitable. Good luck
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I bought some rockwool cavity insulation batts (cheapo) and experimented with them before I ordered acoustic panels to make sure I was getting the size and placement right. The batts are pretty rigid unlike loft insulation and can be cut / propped up against the wall to test. My lesson was that you need a lot of them, and they need to be thick to work. A few picture sized acoustic panels are unlikely to make much difference. I ended up covering both end walls with panels, thick carpet with double underlay and large interlined floor to ceiling curtains.
Just to reinforce a point above - taking resonant bass away by using a trap actually results in more bass. I have a dreadful resonance at 160Hz. I use a digital signal processor with a notch filter to cut the resonance - it makes a hell of a difference. Arguably a bass trap would be better.
@RobinKidderminster I was looking at your completed bass trap project. Do you have a link to the thread detailing how you built it?
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+1. My sig suggests some of my experiments. A pack of rockwool, tho can be messy, at £20 allows 4inch slabs in various positions. Corners are best covered but your door makws that impossible. Cloth covered behind your kit could look acceptable but not an easy room to 'hide' treatment. Having said that, the basic shape & layout looks pretty good.
PS. I know nuffin.
But my experimentation has proved very beneficial.
Hope my build gives you some ideas. Essentially I simply cut triangles of 2inch rockwool and piled them up into the corners. Satisfied that they were effective, I built the timber frame and covered it with acoustically transparent cloth. Were it not for curtains I would have made them as high as the front speakers. Ideally they would be floor to ceiling!
The panel trap used thin timber, with steel brackets and garden wire for rigitity. Not convinced in my room that the panel helps significantly I dont use it but it was worth a try.
I have also found recently that changing crossover frequency has had a significant effect. With so many variables I recon the only rule is that there are no rules.
Would these not be just as good?
I must admit to being apprehensive about trying to build a bass trap as my woodwork skills are non-existent. I imagine I would get it done but it would be all wonky and look amateurish.
The alternative seems to be to shell out hundreds of pounds on pre-built stuff.
See link above you can get 2 bass traps for under £40, these are about 3 foot by 8 inches. As said before you can get kits for about £100 that inc. 2 bass traps and many panels for reflections. There was a link in an earlier post can't find it now.
Here goes ..... If I were you .... (Feel free to tell me to go away )
£20 for a pack of 4inch rockwool. 4ftx2ft. Line the front wall (4ft vertical). See how it works for you and at worst.u have some loft insulation.
If it works then a simple wooden frame covered in cloth with the appearance of a 4inch shelf which doesnt even need to be attached to the wall. Freestanding would be ok. Pity I'm not closer to knock one up! But you may know someone to help. Only an hours work.
You should have enough to try first reflection points but then I think you may need a pro panel.
Foam isn't as effective as rockwool.
It's really not that hard to DIY panels. Get a mitre box to ensure you're cutting straight and take your time. You're only making a simple frame there's nothing advanced involved. I would recommend right angle brackets rather than nails/glue though as they're neater.
If you use good quality fabric (the Cara stuff on ebay) it's quite thick and will hide any minor imperfections.
As mentioned, a triangle full of rockwool is very effective, it's known as a 'super chunk'. They can even be made with the cheap £3 a roll fluffy insulation rather than the more expensive rigid panels.
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The panel in your link looks neat. Did you have anything around the edges of the rockwool to keep shape around the corners?
The consensus seems to be that I could probably live without acoustic panels and instead should focus on bass traps?
RobinKidderminster says to buy some rockwool as a test. Forgive me for being ultra-low-fi but would a load of pillows & duvets work as a test? Could I just stack some spare pillows behind the speakers and into the corner. Or is that as ridiculous as it sounds?
Probably not much use for bass. I thought bass was not your problem but higher reflections. Also leather sofas don't help.
What do you have down the left side of the room?
Yes pillows and a duvet will work, but why focus on bass traps when your problem is at high frequencies?
A few big rugs on the floor and on the walls will help at high frequencies.
As for the bass, having your listening chair right in the middle of the room is a no no due to cancellation effects there, and no amount of bass traping will help.
Try listening from from either 1/3 or 2/3 the way from the front wall.
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