Post by mjh on Mar 16, 2022 13:06:48 GMT
I have an issue and could really use a bit of feedback. Posted this on Reddit earlier and then thought maybe I should try this community.
I have a job next week running sound for a small nightclub. Its dimensions are roughly 7 x 8 meters.
It's a cool space, but the owner still hasn't got round to sorting out the acoustics. Huge decay time on the low end, massive room modes. Just some thin panels for the high end.
I'm part of the scene, so I feel a kind of moral obligation to get at least some attenuation ASAP in time for this show next week, to prevent a melting cornucopia of Ableton clarinets 808s etc.
I was wondering if anyone has time to quickly skim this plan and see if it will make at least a mild improvement on the sound in there.
Plan: convert 4 of these big wooden things into diaphragm bass traps. They
were built as stage decking, but mostly these days are turned flat against the wall for people to put their drinks on. So that would be 16 diaphragm chambers in total, placed near the corners of the room in units of 4.
1.2 x 2.4 meters each. Those chambers are approx 30cm deep and 60cm wide.
My plan is to screw a Mass Loaded Vinyl membrane 20cm deep into each well, leaving a 100mm (4") air pocket behind each membrane.
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In front of membrane, a slab of Knauf RS45 rockwool 120 mm (4.7") thick.
I have plans for securing the rockwool using various bits I have around the place. The front cover is also straightforward, just steel mesh, with fabric / poly batting behind it to stop the rockwool etc.
Overall I know this is not the ideal solution, but it won't cost much and I think it will make a difference having 4 of these in the room (that's 16 diaphragm traps altogether).
What do you think?
Do you think it's worth it with the vinyl, or should I just stuff them with even more of the RS45?
If I do go with vinyl, what kind of kg/m2?
Any thoughts welcome.
I have a job next week running sound for a small nightclub. Its dimensions are roughly 7 x 8 meters.
It's a cool space, but the owner still hasn't got round to sorting out the acoustics. Huge decay time on the low end, massive room modes. Just some thin panels for the high end.
I'm part of the scene, so I feel a kind of moral obligation to get at least some attenuation ASAP in time for this show next week, to prevent a melting cornucopia of Ableton clarinets 808s etc.
I was wondering if anyone has time to quickly skim this plan and see if it will make at least a mild improvement on the sound in there.
Plan: convert 4 of these big wooden things into diaphragm bass traps. They
1.2 x 2.4 meters each. Those chambers are approx 30cm deep and 60cm wide.
My plan is to screw a Mass Loaded Vinyl membrane 20cm deep into each well, leaving a 100mm (4") air pocket behind each membrane.
I have plans for securing the rockwool using various bits I have around the place. The front cover is also straightforward, just steel mesh, with fabric / poly batting behind it to stop the rockwool etc.
from incident air:
steel mesh grille
fabric/poly batting
120mm rockwool slab
70mm gap
70mm gap
mass loaded vinyl
100mm gap
end of wood cavity
Overall I know this is not the ideal solution, but it won't cost much and I think it will make a difference having 4 of these in the room (that's 16 diaphragm traps altogether).
What do you think?
Do you think it's worth it with the vinyl, or should I just stuff them with even more of the RS45?
If I do go with vinyl, what kind of kg/m2?
Any thoughts welcome.
