hi to everyone, ans thanks again for your entries...
so, i finished the phase 1 of my treatment. Results are a bit disapointing...
sorry for my english...to illustrate my post, i join some pics (room pic and rew measurement)
my room in basement : 6.60mx3.60mx1.98/2.00m
concrete walls of big stone
what material i used : about 14semi rigid fiber glass basstraps , about 30kg/m3 of density and 20cm thick
2 basstraps with very low almost fluffy fiberglass about 26 cm thick
what i already had : 4 basstraps 75kg/m3. 2 of 16 cm thick and 2 of 8cm thick
2 broadband panels , rigid fiber glass 65kg/m3
my room has 3 mains locations :
1 : rear wall : listening/mixing point
2 : room center : recording with my band, vocal ans acoustic instruments
3 : back wall, drum location
what i ve done :
ceiling : almost 100%( maybe 90%) absorbed with 30kg/m3 semi rigid fiberglass, 10 cm thick, a few centimenters gap, not enough, i know, but my ceiling is so low that i couldn t do more.
room corners : 4 bass traps from floor to ceiling 30kg, 20 cm thick
drums location, ceiling : a 4 panels cloud above , same density, 10 cm thick and between 8 to 10 cm gap
rear wall behind the drums : all absorbing, differents kind of traps /
side walls about 6 bass traps on each side, placed on floor, sometimes ( when i could) to ceiling, located at the pressure point of my 52hz mode (sine wave and ears opened)
front wall : broadband panel behind monitors, 10 cm panels on side reflections points, 10 cm panel above the listening position with 10 cm gap, and 10 cm panel in the center with 20cm gap
(behind the mixing position, no wall but a kind a cupboard in which there is 2 water heater from the house, the cup board is composed of 4 slim wood doors)
where i could i placed rolled (almost fluffy) panels beetween ceiling and walls...
all the wood strips in the room, especially on the ceiling are only test, and are about to disappear...
regarding at my first measurements before the treatment, i can notice some improvements, especially with a 80z mode, but the 52hz mode (axial i think so) is so strong, when i play a sinewave, it s just incredible. all the traps on side walls have a gap from 15cm to 20 cm...
i m a bit desperate, i know i won t have a perfect sound in this room, butfor now, it still sounds boomy and dull...
what could i do to improve things, i need advices on what i could or couldn t expect.... i m a bit lost....i m opened to every idea
on pics you can see my room treated ans an example of a measure taken about the center mic facing the ceiling about 130 cm height
thanks a lot, a lot, a lot, a lot, alot and thaks