I have finally built my long dreamed dedicated listening room, and it has been very challenging getting the acoustics right. The system is set up on the long wall of 5.0 x 4.15 x 3.25 m (Sepmeyer's type B ratio for what it's worth). Windows and door are sealed and with acoustic treatment, walls made of concrete blocks, wood on the floor.
When I started with the empty room the overall decay was crazy high. I could call believers and preach a sermon here like a cathedral's.
So I bought 14 panels of 10 cm depth 120 x 60 cm filled with high density rock wool (64 kg/m3). I ended up with 4 on the front wall and 4 on the back wall, 3 on each side. Plus a nice colorful rug under my recliner chair.
Surely decays above 150 Hz went down a lot and it's comfortable now around 450 ms. Yes, some will say this is still on the high side but I am fine with it for now.
My real problem, and why I am posting this thread, is my massive peak and reverberation around 40 Hz. In the beginning with panels only the bass was muddy as hell and making me crazy.
So after some emails with the great folks from GIK, they suggested I should be adding large columns on the corners to absorb bass. Since they don't have local distribution in my country, and importing would be crazy expensive, I ordered locally 4 of these massive 60 x 60 x 120 cm blocks with lighter density rock wool (32 kg/m3). They are heavy and was hell getting them into the room, where they are stacked 2 and 2 on each front corner. They look like giant fridges each 2.4 m high!
Well of course this reduced the bass decay a lot, but still not enough. It is listenable but somewhat distracting still.
Problem is that I am running out of space to stack more of these giants, let alone the price and trouble getting them in the room.
At the same time there are far smaller and apparently very effective active solution from PSI called AVAA, but they are surely expensive at 5.2k usd a pair.
Back to GIK they also have tuned absorption with their Scopus for 275 usd each (+shipping and customs here).
Moving the speakers around helps to balance the fundamental bass peak around 40 Hz, and EQ does the rest. But decays are not solved by both.
Below a picture from the speaker, the panels and the huge column.
Any ideas how to improve this situation?
When I started with the empty room the overall decay was crazy high. I could call believers and preach a sermon here like a cathedral's.
So I bought 14 panels of 10 cm depth 120 x 60 cm filled with high density rock wool (64 kg/m3). I ended up with 4 on the front wall and 4 on the back wall, 3 on each side. Plus a nice colorful rug under my recliner chair.
Surely decays above 150 Hz went down a lot and it's comfortable now around 450 ms. Yes, some will say this is still on the high side but I am fine with it for now.
My real problem, and why I am posting this thread, is my massive peak and reverberation around 40 Hz. In the beginning with panels only the bass was muddy as hell and making me crazy.
So after some emails with the great folks from GIK, they suggested I should be adding large columns on the corners to absorb bass. Since they don't have local distribution in my country, and importing would be crazy expensive, I ordered locally 4 of these massive 60 x 60 x 120 cm blocks with lighter density rock wool (32 kg/m3). They are heavy and was hell getting them into the room, where they are stacked 2 and 2 on each front corner. They look like giant fridges each 2.4 m high!
Well of course this reduced the bass decay a lot, but still not enough. It is listenable but somewhat distracting still.
Problem is that I am running out of space to stack more of these giants, let alone the price and trouble getting them in the room.
At the same time there are far smaller and apparently very effective active solution from PSI called AVAA, but they are surely expensive at 5.2k usd a pair.
Back to GIK they also have tuned absorption with their Scopus for 275 usd each (+shipping and customs here).
Moving the speakers around helps to balance the fundamental bass peak around 40 Hz, and EQ does the rest. But decays are not solved by both.
Below a picture from the speaker, the panels and the huge column.
Any ideas how to improve this situation?
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