@erik_squires 🤣🐴🐐🐘🦏!!!!
So: here is an RT60 plot of the room untreated for a quick reference:
In-Room responce measurement with Legacy Focus SE speakers
Evening all,
Odd request or question for folks with Legacy Focus SE speakers. I am doing some VERY casual speaker tests and room response measurements of dads big system. I have Legacy's smaller Studio HD bookshelf speakers, and have a VERY small space and I think they are incredible. In hearing my dad's much larger room/speakers/system (his listening room is literally the size of my tiny home!) with his larger Legacy Focus SE speakers.....I am honestly a bit underwhelmed, especially considering I have the 1/8th size Studios, and in my room/system they sound incredible.
In my home, the Studio bookshelf speakers sound 'mostly' full, warm, very taunt and articulate, and there is the right match of the tone of most all instruments and it's "weight". Like the pluck or strum of a guitar that is percussive, actually has a bit of an impact on your body. However, my dads system lacks this 'impact' or body and weight. Listening at 70-75decibell level is actually grating and feels like your head is being a bit compressed, but it doesn't "sound loud". My dad mentioned he usually doesn't play anywhere above 60ish decibels because of this issue.
Attached (I hope) is a screen shot of REW in room measurement of my system with the Studio HD bookshelf speakers for reference to what I am hearing. In my fathers system, there is a pronounced 100-130hz peak/hump and things sort of trail off rapidly in BOTH higher and lower frequencies. I'm trying to get a similar measurement to illustrate, but thought I would try to get some thoughts first.
Thanks for time!!
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Well, if I interpret this correctly it's exactly what we expected. When you go looking for room treatments you want to focus on panels that are most effective from 700Hz upwards. This should be (if my memory is correct) mostly the 2" type of panels. It is worth including about 1/3rd of them as combination diffusion / absorbers so you don't end up with too dead of a room. Once these times come down it will be worth revisiting. Also, don't forget the floor and ceiling!!! The floor is easy to treat if not done already with carpeting and rugs. The ceiling you might want to wait until you finish placing the speakers as the area between them and listening location deserves extra treatment. |
OP: Reputable makers like GIK and ATS (there’s a third brand that is often recommended to me which I’ve forgotten, but not ASC) have the absorption coefficients listed in Sabines or something like that. More Sabines = more absorption. Also, given the strength of the 5 kHz time you might want to concentrate (but not exclusively) behind the listener and speakers. The reason is that speakers get directional by this frequency, and given the time is still so high it’s quite likely you have a back/forth reflection going on there. If you felt like making some semi-circular diffusors behind the listening location those would probably help a great deal. |
@erik_squires great insights again. I was just doing reading up on the specific frequencies and energy/directionality. I have been diving into that AM Acoustics web site as well, which has been PERFECT for this exact exercise: everything I am even roughly measuring and hearing, it is show as well. It mathematically predicts the RT60 in sync to what I measured, and it is also telling me the exact same higher energy frequencies with specific notes to test.
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- 71 posts total