Scratching the acoustic treatment itch

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Lindsayt
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Re: Scratching the acoustic treatment itch

Unread post by Lindsayt »

I think that just about every piece of furniture / clutter / bric a brac / coverings in a room help the acoustics. As long as they are not resonant and don't block the line between speakers and ears.

Carpets, rugs, wallpaper, curtains, sofas, armchairs, bookshelves, circles from the set of the original Star Trek series, people, books, vinyl collections, foam panels, coffee tables, desks, pets, garden gnomes, stamp collections, motorbikes, the lot.
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savvypaul (Thu Apr 29, 2021 11:07 am) • Geoff.R.G (Thu Apr 29, 2021 10:22 pm)

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Re: Scratching the acoustic treatment itch

Unread post by nilsatisnisioptimum »

Lindsayt wrote: Thu Apr 29, 2021 9:17 am My wife would divorce me if I brought them into our home. :think: :angelic-little:
Do you want to give me your address :lol:
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Lindsayt (Thu Apr 29, 2021 6:46 pm)
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Re: Scratching the acoustic treatment itch

Unread post by nilsatisnisioptimum »

antonio66 wrote: Thu Apr 29, 2021 3:09 am That looks to me like a good purchase, and I for one will be interested how you get on. Could you tell me the dimensions of your room and whether you have your speakers facing the shorter or longer length of the room.
To quote a musician friend my listening room is "sub optimal" and it hard to disagree. It's by design, deliberately minimalist, my ceilings are a paltry 227 cm high. It's L shaped, narrow part is 300cm wide, base of the L is 480cm wide and it's 456cm long at it's max. My modified Cubix are at the top of the L where it's 300cm. They are slightly toed in (20cm) on dedicated stands with the tweeters firing approximately at ear height. The rear face of the Cubix is 18 & 20cm from wall and the sides are 39cm from the side walls. They are tilted upwards at 4 or 5 degrees. As you can gauge I have "sweated" every aspect of the positioning and to be honest right now it's a bloody good system because every single item has been thought through a hundred times or more. Prior to collecting the acoustic discs I think it's a 50/50 bet if they improve the sound but I won't know until I try and I am nothing if not a curious soul. I still have a number of theoretical gains to pursue without spending a lot of cash and at £100 plus £25 fuel it's hardly going to break the bank. Plan B will be to make wall absorbers from a few of them and then put the spare ones back on to flea bay. As always nothing ventured, nothing learned 🙂
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CycleCoach (Thu Apr 29, 2021 3:28 pm) • antonio66 (Thu Apr 29, 2021 10:05 pm)
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Re: Scratching the acoustic treatment itch

Unread post by CycleCoach »

nilsatisnisioptimum wrote: Wed Apr 28, 2021 10:47 pm
CycleCoach wrote: Wed Apr 28, 2021 8:48 pm I've got plenty of bike inner tubes and tyres in the garage if you need to roll them up the road! :lol:
Unless you have a penny farthing your tyres are going to be a tad small for the 900mm large discs 🙂
Oh, I've got some that will fit... 8-)
Image

Also: don't forget to turn those discs sideways before you try to bring them through the front door! :lol:

Seriously though: really interested to hear how you get on!
Current System: Cambridge Audio CXC thru Cheapo Chinese DAC & PS, NORD streamer, NVA P50sa, NVA A80 x2 (they're special ones.), NVA SSP Mk2, NVA LS6, NVA Cube1 Coming soon: Vinyl and a BMU

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Re: Scratching the acoustic treatment itch

Unread post by nilsatisnisioptimum »

That's very Graeme Obree in it's looks and it has something of a 80/90s feel to it.
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Re: Scratching the acoustic treatment itch

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nilsatisnisioptimum wrote: Thu Apr 29, 2021 4:43 pm That's very Graeme Obree in it's looks and it has something of a 80/90s feel to it.
Francesco Moser in '88 I think (where he managed 32 miles in an hour to break the world record held for a long time by Eddy Merckx) Graham O'Bree. Boardman et al were just a bit later.
They've changed the rules now so all the bikes look pretty much the same: so much for innovation!
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Re: Scratching the acoustic treatment itch

Unread post by antonio66 »

Thanks for your detailed reply, never thought about putting any spare ones on the wall. I suppose the thing you want to know now is how to position them on the ceiling, and that is the $64,ooo question. You can get wall treatment pretty cheap on AE and they even do bass traps https://www.aliexpress.com/wholesale?ca ... +treatment

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Re: Scratching the acoustic treatment itch

Unread post by nilsatisnisioptimum »

If one of those 900mm disc lands on my head I will be off to the original A&E 😶
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Re: Scratching the acoustic treatment itch

Unread post by Geoff.R.G »

Lindsayt wrote: Thu Apr 29, 2021 11:05 am I think that just about every piece of furniture / clutter / bric a brac / coverings in a room help the acoustics. As long as they are not resonant and don't block the line between speakers and ears.

Carpets, rugs, wallpaper, curtains, sofas, armchairs, bookshelves, circles from the set of the original Star Trek series, people, books, vinyl collections, foam panels, coffee tables, desks, pets, garden gnomes, stamp collections, motorbikes, the lot.
Any soft furnishings will absorb high frequencies or at least prevent reflections, hard surfaces can have an opposite effect. At least the average living room doesn’t have a tendency to boom at 125Hz. The most problematic thing I have encountered is a hollow false work “arch” installed as part of a room divider. The divider panels run on a track in the underside of the arch. The divider was useful when independence access was available to both sides but following various changes one side can only be accessed through other rooms. Get more than half a dozen people in there and conversation becomes near impossible, the capacity is considerably more than that.

The point being that sometimes “treatment” isn’t enough but, even with the divider, curtains or rugs on the walls made a big difference.

The other thing I have found useful is the RTA audio spectrum analyser for iPad that can quickly reveal problem frequency bands, there is a free version but the paid version has more frequency steps. Not very subjectivist but having an idea which frequency/ies are causing the problem can help with material choices.
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savvypaul (Fri Apr 30, 2021 11:13 am) • nilsatisnisioptimum (Fri Apr 30, 2021 10:52 pm)

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Re: Scratching the acoustic treatment itch

Unread post by nilsatisnisioptimum »

Is that the Randon Soft app Geoff ?
Modified Airlink BPS 3110S with LDA DC filter, modified Rega Planar 8 with Apheta 3, LDA MCJ3 phono, NVA P90 SA MK2, FW Aleph J mono blocks, Cambridge Audio CXC, Denafrips Ares2 DAC, Audio Technica ATH 70 cans, Cubix MMXXI & NSNO W48.5 speaker cables

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