[mysticaldodo]

Hi, I'm a newbie here and I would like to ask your advise before trying to improve my room's acoustic I can. my problem is there is a noticeble amount of boominess in the bass.

My setup is as follows:

Cambridge Audio 640C version 1/ Goldring 1.2
Cambridge Audio 640A version 2
DIY silver wire Speaker Cable/ Siltech I/C
EPOS ELS3

My room (pls forgive me for the illogical rendering and wierd size...I'm beginner in Adobe Illustrator)



My room is 8 feet tall. I think the ceiling is plaster. The bookshelves by the way are toed in to my sitting position and are approximately 1/2 metre from the rear wall. EPOS recommends up to 20 inches from the rear wall.

My previous position was the 2 speakers in front of the window and my sitting position on the bed. The bass sounded soft and tight but the mids and treble were slightly dry and lack a bit of weight. Also due to limited width space I had to put them closer together sacrificing soundstage.

In my new position which is by the long wall, the mids sounded better to my ears with drums and voices having more weight. But the bass became boomy. I tried playing some tracks with electric bass in the fore front and it sounded nice. When I played some average pop records and acoustic material, there was a bit of boominess. Maybe its only the midbass that is boomy?  I'm sitting at the rear of the wall.

Also my cupboard and toilet door are have glass on them which should be reflective plus a mirror in the corner. My window has some kind of wood blinds which I close everytime I hear plus 2 sheets of thin drapes.

I can't move the furniture especially the bed and table (various reasons) They are no other rooms. I prefer to keep it in my own room anyway.

I've no carpeting on my floor. I just want the best sound I can get possible. I can get DIY diffusers for USD 40 a piece but prefer not to mess with the ceiling LOL!.

[mysticaldodo]

I'm not sure what my walls are made of, bricks, cement then paint or possibly plaster. Anyway i don't think its resonant. When I clap my hands in the middle of the room, I clearly can pin point the sound coming from my hands.



Thats my wall.

Some more pictures of my room





I plan to get a floorstander for bass extension (my current one goes down to 65HZ only) but want to solve the bass boominess problem first.

My toilet door...a glassy type of material?



My cupboard



Thanks again!

[mysticaldodo]

By the way, I have a dealer who has a small room like mine (maybe 9 feet x 10 feet?). His seating position is also touching the rear wall but he put a diffusor on the wall behind the head. I sense no boominess in his room too.

[bpape]

You'll never get smooth bass response with the seating against the back wall.  Any diffusion on the rear wall when you're that close is basically doing nothing.  Diffusion requires space to be effective number one.  Number 2 is that to diffuse bass frequencies requires treatments that are VERY large - like in the meters wide and very deep.  If he has no boom, it's for different reasons.

You need to get the chair away from the rear wall by at least 2'.  Also, consider building some bass absorbers for the corners of the room.

[mysticaldodo]

Thats what I thought  so too.

Hmm...

This was my original speaker placement



The mids lack a bit of weight and the sound doesn't seem to reach far (sounds weak if I sit 9ft away, too far? ) though the bass is tight and sans boominess. Could it be the speakers themselves?

Do you think replacing standmounts with floorstanders would better suit my room. As can be seen from the pics, my floor has reflections so should I get a carpet and maybe something to cover the glass areas of the cupboard & toilet door. Or would it be wiser to get the standmounts first and then work on the room acoustics?

One of the Hifi dealer has a similar room to mine but narrower width. He puts his Sonus Faber Concerto standmounts very close to the sidewalls and toes it in but at the first reflection buts a long diffuser (about 1 metre). I'm not saying that his placement will work in mine but this is the closest thing to what my room looks like

[woodsyi]

If you can move the bed next to the window and place your desk and speakers on the short wall by the main entrance firing down the long way, you will get better sound.  You may even have room to put a chair on a nearfield sweet spot.