H
hitmusic
New member
I'm relatively new to acoustic treament and i really need advice on sorting out the low end of my room.
Room facts:
1. The room is 14 x 9 with an 8 foot ceiling.
2. The Room has a brick cavity wall on one side
3. The room has a block cavity wall on all other sides
4. The Walls are skim plastered (not plasterboard) and painted
5. The Ceiling is plasterboarded
6. Above the ceiling is a loft space with no insulation between joists (yet)
7. The floor is a 1 foot high wood stud construction on concrete (so it's empty) with Oak laminate floor (with special sound underlay called Drum Sound which pushes sound into the void instead of the room).
Treatment:
I've used Ethan's design for high/mid traps. I purchased 4inch rockwool (the correct type - i checked), created frames, covered them in fabric and then mounted them to the walls via a sliding hanger arrangement. They currently sit around 2 inches from the wall and seemed to dramatically imrpove the overall sound.
I have another pack of 6 slabs to use although i could get some more.
Monitoring:
1. I use the room for mixing/recording & rehearsal
2. I have a pair of Tannoy Active Reveal's for mixing
3. I have 4 Celestion KR 10's and 2 KR series Subs for rehearsal (In ceiling corners of the room, subs where-ever i can fit them in!).
Measurements:
I've used the Room Eq software to check peaks in the frequency spectrum but i don't know what i'm really doing.
I then downloaded Ethan's test tones and this appears to show the following (Which is similar to the Room Eq software results)
Note: The DB increase is estimated by eye !
+3db 98hz
+6db 112 - 121 (Centered around 118hz)
+12db 128 - 140 (Centered around 132hz)
+6db 140 - 160
Null 166 - 170
Null 188 - 190
+8db 197 - 208 (Centered around 205)
215 - 315 seems to be fairly flat and that's where i stopped measuring.
My questions:
When playing a low B or F (sometimes another note but mainly limited to 3) on an acoustic guitar there's a build up of feedback that's boomy and uncontrolable unless you stop the note. Also, playing bass is difficult as all the notes seem to mold together and are not distinct.
I've read so many threads on this subject that i now believe that i need bass traps. I think that i need a simple slab across the corner type but i'm confused about the actual construction. i.e should i just wrap a slab in material ?
I'd also like to know if filling the ceiling cavity with insulation will improve the sound. The plan was to board out the loft and pack the joists with rookwool (Normal fluffy stuff) but if it's likely to cause more problems then i'll leave it.
Any advice would be really appreciated as i really trust the judgement on this site. I have a JPG of the layout which i can post if you need it.
Many Thanks
Andy.
Room facts:
1. The room is 14 x 9 with an 8 foot ceiling.
2. The Room has a brick cavity wall on one side
3. The room has a block cavity wall on all other sides
4. The Walls are skim plastered (not plasterboard) and painted
5. The Ceiling is plasterboarded
6. Above the ceiling is a loft space with no insulation between joists (yet)
7. The floor is a 1 foot high wood stud construction on concrete (so it's empty) with Oak laminate floor (with special sound underlay called Drum Sound which pushes sound into the void instead of the room).
Treatment:
I've used Ethan's design for high/mid traps. I purchased 4inch rockwool (the correct type - i checked), created frames, covered them in fabric and then mounted them to the walls via a sliding hanger arrangement. They currently sit around 2 inches from the wall and seemed to dramatically imrpove the overall sound.
I have another pack of 6 slabs to use although i could get some more.
Monitoring:
1. I use the room for mixing/recording & rehearsal
2. I have a pair of Tannoy Active Reveal's for mixing
3. I have 4 Celestion KR 10's and 2 KR series Subs for rehearsal (In ceiling corners of the room, subs where-ever i can fit them in!).
Measurements:
I've used the Room Eq software to check peaks in the frequency spectrum but i don't know what i'm really doing.
I then downloaded Ethan's test tones and this appears to show the following (Which is similar to the Room Eq software results)
Note: The DB increase is estimated by eye !
+3db 98hz
+6db 112 - 121 (Centered around 118hz)
+12db 128 - 140 (Centered around 132hz)
+6db 140 - 160
Null 166 - 170
Null 188 - 190
+8db 197 - 208 (Centered around 205)
215 - 315 seems to be fairly flat and that's where i stopped measuring.
My questions:
When playing a low B or F (sometimes another note but mainly limited to 3) on an acoustic guitar there's a build up of feedback that's boomy and uncontrolable unless you stop the note. Also, playing bass is difficult as all the notes seem to mold together and are not distinct.
I've read so many threads on this subject that i now believe that i need bass traps. I think that i need a simple slab across the corner type but i'm confused about the actual construction. i.e should i just wrap a slab in material ?
I'd also like to know if filling the ceiling cavity with insulation will improve the sound. The plan was to board out the loft and pack the joists with rookwool (Normal fluffy stuff) but if it's likely to cause more problems then i'll leave it.
Any advice would be really appreciated as i really trust the judgement on this site. I have a JPG of the layout which i can post if you need it.
Many Thanks
Andy.
