Starting in room acoustics

[hardcore_gamer99]

So i have just build my 2.1 setup with Denon x4800h DALI opticon 2 mk2 and svs pb 2000 pro. Now this subwoofer is not performing i tried many settings watched many videos and evens subwoofer crawl failed. Now its time to step into the world of room acoustics. I am attaching a video that gives 360 view of my room with instructions of each wall written with my sitting distance possible. So, would like to know the best wall for wall mount where there is minimal need of room acoustics. Like i have written which wall has wooden door to left or right or open window so that acoustics can be treated according to it. As its a bedroom not dedicated ht room i would like minimum required acoustics. The main issue is subwoofer only though speakers sound best. I will be getting rid of pc table and tv unit as well from this room and will wallmount tv. So which will be best wall so that i can put my subwoofer in front only to blend with dali fronts.

 

[ajuvignesh]

Start with bass traps if you have resonance of frequencies under 120Hz in the room.

 

[hardcore_gamer99]

Start with bass traps if you have resonance of frequencies under 120Hz in the room.

i have sent a video to a guy from whom i bought umik1 mic lets see. Which wall would you prefer to wallmount tv? text and insturctions appear on each wall in video

 

[Phani24]

i have sent a video to a guy from whom i bought umik1 mic lets see. Which wall would you prefer to wallmount tv? text and insturctions appear on each wall in video

Iam sure This thread breaks the record of subwoofer thread in number of posts

 

[Phani24]

So i have just build my 2.1 setup with Denon x4800h DALI opticon 2 mk2 and svs pb 2000 pro. Now this subwoofer is not performing i tried many settings watched many videos and evens subwoofer crawl failed. Now its time to step into the world of room acoustics. I am attaching a video that gives 360 view of my room with instructions of each wall written with my sitting distance possible. So, would like to know the best wall for wall mount where there is minimal need of room acoustics. Like i have written which wall has wooden door to left or right or open window so that acoustics can be treated according to it. As its a bedroom not dedicated ht room i would like minimum required acoustics. The main issue is subwoofer only though speakers sound best. I will be getting rid of pc table and tv unit as well from this room and will wallmount tv. So which will be best wall so that i can put my subwoofer in front only to blend with dali fronts.

Do you have carpet in floor if not try it. If it is not set then think of any further

 

[Yelamanchili manohar]

So i have just build my 2.1 setup with Denon x4800h DALI opticon 2 mk2 and svs pb 2000 pro. Now this subwoofer is not performing i tried many settings watched many videos and evens subwoofer crawl failed. Now its time to step into the world of room acoustics. I am attaching a video that gives 360 view of my room with instructions of each wall written with my sitting distance possible. So, would like to know the best wall for wall mount where there is minimal need of room acoustics. Like i have written which wall has wooden door to left or right or open window so that acoustics can be treated according to it. As its a bedroom not dedicated ht room i would like minimum required acoustics. The main issue is subwoofer only though speakers sound best. I will be getting rid of pc table and tv unit as well from this room and will wallmount tv. So which will be best wall so that i can put my subwoofer in front only to blend with dali fronts.

I sadly dont have the bandwidth to watch videos. So below are some general treatment methods used. I've done all the below, except treating my ceiling.


1) If we cant go full monty with thick bass absorbers. Then best to consider some sort of digital intervention for correcting the bass peaks. Minidsp has several models in their portfolio. And will generally blend the subwoofer better than trying to achieve the same manually. I tried blending a sub with my then 2 channel cum HT system for 6 months and finally gave up. I had a parasound amplifier at that time which allowed high / low pass filters and gains for the sub / main speakers. And despite having this additional functionality, which most integrated amps or preamps dont have, I still failed miserably. So I would suggest minidsp above manual attempts any day.

2) Once the bass is sorted, then I got the biggest gains by treating the wall behind my seating position. This becomes all the more important, if you are sitting very close to the back wall. Anything less than 1 M will be too close. And adding as much thick absorption ( broad band absorption ) as possible here, really reduces flutter echoes and bass reverb. This really improves clarity and also reduces the ambient noise in your room.

3) Third would be the first reflection points on ceiling. Usually we dont treat this area for aesthetic reasons. And I havent treated this yet too. So I will reserve my judgement on that one. And next will be first reflection points on your side walls.

4) Once all the above are attended, then last would be the front wall between the speakers. Usually diffusers work better here.

 

[hardcore_gamer99]

I sadly dont have the bandwidth to watch videos. So below are some general treatment methods used. I've done all the below, except treating my ceiling.


1) If we cant go full monty with thick bass absorbers. Then best to consider some sort of digital intervention for correcting the bass peaks. Minidsp has several models in their portfolio. And will generally blend the subwoofer better than trying to achieve the same manually. I tried blending a sub with my then 2 channel cum HT system for 6 months and finally gave up. I had a parasound amplifier at that time which allowed high / low pass filters and gains for the sub / main speakers. And despite having this additional functionality, which most integrated amps or preamps dont have, I still failed miserably. So I would suggest minidsp above manual attempts any day.

2) Once the bass is sorted, then I got the biggest gains by treating the wall behind my seating position. This becomes all the more important, if you are sitting very close to the back wall. Anything less than 1 M will be too close. And adding as much thick absorption ( broad band absorption ) as possible here, really reduces flutter echoes and bass reverb. This really improves clarity and also reduces the ambient noise in your room.

3) Third would be the first reflection points on ceiling. Usually we dont treat this area for aesthetic reasons. And I havent treated this yet too. So I will reserve my judgement on that one. And next will be first reflection points on your side walls.

4) Once all the above are attended, then last would be the front wall between the speakers. Usually diffusers work better here.

thnx a ton but i dont knwo how to use rew i just unboxed my umik1 mic. will learn it first. first tell me as my room is small i sit at wall only so tell me which type of acoustic i use for best quality .

 

[hardcore_gamer99]

Do you have carpet in floor if not try it. If it is not set then think of any further

which type of carpet please tell fully as i have no knowledge of it

 

[hardcore_gamer99]

Start with bass traps if you have resonance of frequencies under 120Hz in the room.

and of what material bass trap be made of for high quality? and shape?

 

[Yelamanchili manohar]

thnx a ton but i dont knwo how to use rew i just unboxed my umik1 mic. will learn it first. first tell me as my room is small i sit at wall only so tell me which type of acoustic i use for best quality .

Hi...there are lots of video tutorials on Rew on youtube. You will find it easy to learn the basics of measuring, no worries

For the back wall absorbers, search for what is called as "Broad band absorber". You will find them on auralexchange. Even flat panel bass absorbers work here. Just bear in mind to choose panels with a minimum thickness of 4 inches. And please dont consider any of the products that are foam based. Use panels with rockwool or similar.

 

[ajuvignesh]

and of what material bass trap be made of for high quality? and shape?

depends. I prefer rockwool and triangle shaped

 

[Saiganesh]

So i have just build my 2.1 setup with Denon x4800h DALI opticon 2 mk2 and svs pb 2000 pro. Now this subwoofer is not performing i tried many settings watched many videos and evens subwoofer crawl failed. Now its time to step into the world of room acoustics. I am attaching a video that gives 360 view of my room with instructions of each wall written with my sitting distance possible. So, would like to know the best wall for wall mount where there is minimal need of room acoustics. Like i have written which wall has wooden door to left or right or open window so that acoustics can be treated according to it. As its a bedroom not dedicated ht room i would like minimum required acoustics. The main issue is subwoofer only though speakers sound best. I will be getting rid of pc table and tv unit as well from this room and will wallmount tv. So which will be best wall so that i can put my subwoofer in front only to blend with dali fronts.

Oh man!
I guess your problem was lack of bass, right?
Accoustics are to majorly absorb the reverbs and unintended accoustic excess.
With lack of bass and accoustics, will further void/null the bass!!!
Thats how i percieve.
Lets see whay comes up here!

 

[Phani24]

thnx a ton but i dont knwo how to use rew i just unboxed my umik1 mic. will learn it first. first tell me as my room is small i sit at wall only so tell me which type of acoustic i use for best quality .

Where you bought umik1

 

[hardcore_gamer99]

Oh man!
I guess your problem was lack of bass, right?
Accoustics are to majorly absorb the reverbs and unintended accoustic excess.
With lack of bass and accoustics, will further void/null the bass!!!
Thats how i percieve.
Lets see whay comes up here!

what do u mean? should i or should i not treat the room

 

[hardcore_gamer99]

Where you bought umik1

search avenuesound .in google

 

[Yelamanchili manohar]

Oh man!
I guess your problem was lack of bass, right?
Accoustics are to majorly absorb the reverbs and unintended accoustic excess.
With lack of bass and accoustics, will further void/null the bass!!!
Thats how i percieve.
Lets see whay comes up here!

Hi Ganesh

Just thought I'd add something I've learnt here. At bass frequencies, it takes 12 Sq.ft of absorptive surface area, of a material that is effective and thick enough at this frequency, to give a 3db correction. And the material will be too thick to fit into any domestic environment to even try. So adding bass trapping will not reduce bass per se. But it reduces decay times of the bass. Excessive decay times or reverb as we call it, when present at very low frequencies masks detail. And high reverb times at room induced peaks leads to bass boom.

So adding bass absorption will not reduce the bass peak, it will only reduce the reverb time at the bass peak, there by reducing bass boom. Of course we can theoretically clip the bass peaks with absorption, but it takes way too much area, volume, weight and material to be effective. So using some kind of digital correction to clip the peaks, then using decent amount of bass absorption to lower the decay times is the practically achievable way of addressing bass in a home environment.

 

[Saiganesh]

what do u mean? should i or should i not treat the room

Use a matress on the floor. Rest of the floor use a carpet or some kind of rug. Cover the side walls with thick curtains.
Doing this is vfm accousticz.
By a high density 2 inch foam and cover the corners (the four coners of the room) by say 2feet width and 9 feet height and hide them behind the curtains.
ANything beyond this will attract professional help and will cost a lot- a lot like in you could buy another level HT gear which sound much more refined than what you have now. Generally accoustics professional help is good with more high end gear to justifytheir asking price.

 

[hardcore_gamer99]

Use a matress on the floor. Rest of the floor use a carpet or some kind of rug. Cover the side walls with thick curtains.
Doing this is vfm accousticz.
By a high density 2 inch foam and cover the corners (the four coners of the room) by say 2feet width and 9 feet height and hide them behind the curtains.
ANything beyond this will attract professional help and will cost a lot- a lot like in you could buy another level HT gear which sound much more refined than what you have now. Generally accoustics professional help is good with more high end gear to justifytheir asking price.

i just want subwoofer to redirect 100% frequency to my sitting position

 

[Saiganesh]

i just want subwoofer to redirect 100% frequency to my sitting position

Accoustic is not the way out. Find a place where you and subwoofer can be close enough