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Couple of Pictures of A ROUGH setup to give you an idea of where and how they will be placed, In the Final setup The Diffusors will all be custom cut to fit the exact hight/length needed for A perfect fit...

It is important to note that The Flutter Echo tiles will be placed at Ceiling hight and one 4" wide continuous Diffusor will be hung horizontaly at the top where the ceiling and side walls meet and slightly tilted down all the way along the left and right side walls in the room, underneath them the diffusors will be hung Verticaly in carefully chosen places.....

IMO Diffusion is often overlooked by most & is just as important as Absorbtion, and can be as affective if applyed correctly....
QUOTE "Its Application converts small rooms with flat parellel sufaces into functional spaces with good SPEECH INTELLIGIBILITY, SOUND QUALITY,AND A NATURAL,COMFORTABLE AMBIANCE....

The down side of Diffuson is that it is much more complexed to design build and apply than Absorbtion and it costs more to manfacture....

Cheers....:T
Very interesting Jason..
So these tiles are placed beyond the first reflection point..somewhere near the second reflection point?

Any particular reason for coating them with gloss Estapol?..I think they will look distractingly shiney when you're projecting..
 

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I bought some Tassie Oak before Christmas, it's not cheap...

Did you keep the shavings to do some home smoking? My local sawmill used to put a 20kg bag of sawdust aside for me in return for a couple of smoked trout!
Good point about the shavings..:T I could do with some myself for smoking Carp:yes:..
 

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Discussion Starter #43 (Edited)
Hi Prof, & thanks for your post...

I have A two stage riser with two rows of seating, so I set up first reflection absorbtion for both... The idea is that between the 2 reflection points you can have Diffusion this is one place where my Advanced BroadBand QRD nested Diffusors will be placed for the higher performance once built...With this type of Diffusor the seating position should not be any closer than around 6ft Due to Well depth....

For the picture I put the flutter Echo diffusors in this position to show where they can be placed But as pictured above they will be placed mainly around the surround speakers with A small amount of absorbtion and where the side wall and ceiling meet. So that is why I whent gloss but I totaly agree with you Prof that if they were permanatly placed between the first reflection points that flat black is more appropriate...

Cheers....
 

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Discussion Starter #44 (Edited)
I bought some Tassie Oak before Christmas, it's not cheap...

Did you keep the shavings to do some home smoking? My local sawmill used to put a 20kg bag of sawdust aside for me in return for a couple of smoked trout!
Hi Robbo,Thanks for your post..

Yes I have heaps of the Tasman oak sawdust, so far from all the routing I would have around A 80lt bin full.
Did'nt know they use that to smoke trout, I was going to use it for the kids Guinea pig beding :eek:....

FWIW I am paying around $5.80au per meter for 140mm x 35mm F17 tasman oak hardwood... One I run it through my thicknesser to dress it it comes up nice...

Cheers....
 

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I've smoked quite a few over the years with Tassie Oak and the only complaint was from the old bloke at the sawmill who saved me the sawdust missed out one time as the others had an early lunch and found them in the fridge first.
 

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Discussion Starter #47
You need the ultratel with no facing for BroadBand Bass traps, If you want to block out high frequencies you can just use A Brown paper membrain like the Tuned bass trap on the first page check it out .....
 

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Discussion Starter #49
Once I Dress the 140x35 f17 Tassie oak through my Surface Planer down to 25mm thick it comes out like the more Expensive pre Dressed 32mm Tasman Oak :T......

Where would we be without power tools.....

Cheers.....
 

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Discussion Starter #51
Yes A very handy piece of gear but very messy :thumbsdown: and very very Dangerous like all planers.....

FWIW That Ryobi Surface planer was made in 1995 when Ryobi was OK but all the new Ryobi stuff is mostly rubbish now IMO, Disposable power tools ......

Cheers....
 

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Unfortunately it's not just Ryobi.
I have a mate who repairs power tools and he recommends buying old tools >10yo and repairing them.
You name the brand & there is a 90% chance it isn't made to last more than its warranty plus 1 day.
There are still a few good ones out there if you look hard enough! and are willing to pay.

Personally I hate the fact that the rest are just going to end up as toxic landfill..........
my 2c
 

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Discussion Starter #54
Yes I agree with your mate as far as the older Ryobi stuff being good quality, But The problem being that A lot of the parts for 10y + Ryobi power tools are No Longer Available Thus can't be repaired unless you custom make the parts needed...

FWIW I to used to Repair all heavy industrial and power Tools inc Electrical rewinds IE: Remanufacturing/ Rewinding Armatures, Stators and more in house for over 10 years....

Unfortunatly these cheap Chinese manufactured power tools are now disposable items, It costs more to repair these tools than replace which is what Ryobi/ Black&Decker (dewalt), to name A few do for warranty claims :yikes:....

Cheers....
 

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Discussion Starter #55
I have finnished making my larger 4ft flutter Echo Diffusors 8 in total 4 per side, Just need to stain the frames and put the gloss coat on the Diffusors and frame.....
More to come....

Cheers...
 

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Discussion Starter #57 (Edited)
Yes Prof I am hopping they will look good, But as noted they are A nightmare to make...

FWIW I have been talking to Doug Plumb of Acoustisoft.com about the Excellent RplusD Room Acoustic measurement software (Ethan of real traps uses it) so I can optimize my room Acoustics, this includes speaker placement, EQ Subwoofers and "Room treatment placement" & much more....

I am going to "cheat" and use his 1 on 1 Consultation package, I figure that it would be better to use his knowledge & Expertise for the best result rather than me having to learn how to analyze & interpret what the Data is telling me + I am A very impatient :hissyfit: person when it comes to this stuff so that works against me also...


Has any one here used this High End room Acoustic software ?....

Cheers....
 

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This is an interesting thread. I have read it several times now.

What frequency range are you diffusing with these?
 

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Discussion Starter #59
Hi Fred & thanks for your post :T,

This type of QRD Diffusor's coefficient range is usefull between - 3500hz --- + 20000hz..
If you mount these Diffusors with A space and air cavity combined with Semi riged fiberglass, absorbtion below the Diffraction limit can be achieved.....

:T Because the Well depth is only small they can be placed closer to the listner which is the biggest plus as compared to QRD Diffusors with 6" deep or deeper wells....

:thumbsdown: The Down side to this Diffusor is its smaller Diffusive frequency range as compared to A BroadBand Diffusor such as the type I will build later down the track....

Cheers....
 

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Thanks Jason. I suspected that it would be higher in frequency. I would like to try some diffusion at the first reflection points on the side walls and this looked like a possible candidate. I think that with the smaller wells, they could look quite elegant.

I need to go back and re-read that section of the Master Handbook.
 
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