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Advice please - Treatment / Setup
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Member Since:
May 3, 2021
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May 3, 2021 - 10:09 pm
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Hello,

Firstly thanks Dennis for all the knowledge you have shared, it has already been a greatly appreciated redirection.

I have a newly leased house and I am here to ask for advice on what kind of diffuser / absorption treatment to use, and where to use it.

Room is to be used as a music / mastering room with minimal need for recording live acoustics at this moment, mostly recording direct signals from electric instruments.

I am allowed to hang treatment on walls. Roof treatment not practical for my situation.

Details of the room :

Size of the room : W = 3.36m (11ft) H = 2.40m (8ft approx.) L = 4.55m (15ft)
Small room I’m know, however the room can be used how I want, within the bounds of my lease agreement.
I currently have the speakers (temporarily) set on my desk at the front 1/3 line (1.5m / 5ft)
Listening position near the rear 1/3 line.

Large front window – willing to keep closed permanently and add portable diffuser and/or absorption treatment, currently using two thick camping mattresses and double layer curtains as a temporary “better than nothing” approach.

Door in front left corner.

Hardwood floors on a raised foundation.

Open rear double doorway which leaves approx 0.90m of rear wall on both left and right side. 0.30m between doorway and ceiling.

Two small wall ventilations near ceiling on both ends of one side wall.

Textured ceiling with plaster or render. (not completely flat)

Rug below listening position.

Speaker specifications:

I have a pair of PSI Audio A-17M, 2-way Speakers with 7″ Drivers
Which I plan to use on individual stands at approx. 1.2m (4ft)

Power RMS: 80 + 40 W
Program Power: 120 W
0.25 s PSI-M SPL@1m: 99 dB
Short Term max SPL@1m: 104 dB
Peak max SPL@1m: 114 dB
Signal to Noise Ratio: 95 dBA
Response at -6dB: 44 – 23000 Hz
Phase tolerances: Β±45Β° (180Hz – 20kHz)
Dispersion: 90Β° x 90Β° (H x V)
System: 2 Way(s)
Crossover frequency: 3.6 kHz
Woofer’s dim. Ext. / Diaph.: Ø175 mm / Ø130 mm
Tweeter’s dim. Ext. / Diaph.: Ø100 mm / Ø25 mm

Dimensions W x H x D mm: 200 x 320 x 230

So with all that, with my focus being on side / front / rear wall treatment, what kind of Acoustic Fields’ designs should I look into building, and where would be the best position to mount them or place them.

I am located in Australia so buying finished products from Acoustic Fields isn’t a cost effective option considering how much freight would cost to ship so many heavy units.
(Unless you have distributors in Aus)

Good luck with this edition of small room challenges !

Advice would be greatly appreciated,

Kind regards,
Ed.

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Chief Acoustics Engineer
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August 12, 2013
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May 9, 2021 - 3:27 pm
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With this small room size and volume you need to keep all energy sources away from the walls at least 3-4′. Without treatment, this room set up will be almost impossible

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