Ceiling Height and Speaker Sound

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Bongo Beater

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Greetings, new member here.

I live in a mid-century modern house with a sloped roof. In our family room, I have two speakers on pedestals in opposite corners of the room. Because of the slope of the ceiling, there is a lot more space above one of the speakers than the other.

I get a lot more bass out of the speaker on the low-roof side than the speaker on the high-roof side.

I am trying to trouble shoot and determine if this has to do with space, or if there is something else going on with the speakers or amp. I don't think it is an amp issue, as I've reversed channels, and the bass is still on the same side of the room. I could switch speakers, but that will be a little involved because space/wiring issues.

Any thoughts? Thanks in advance!
 
Hello and welcome.

Pretty sure you have the answer, the low side is creating a secondary box around the speakers creating more bass. I am sure others can explain it more eloquently than I can.

I have a pair of bass shy JM Labs bookshelves when on stands in the room, but when I place them into the corner cabinets built next to my fireplace, it is like placing the speaker in a larger box. It creates way more bass then when they are not in the corner cabs.
 
Shadowfax said:
Hello and welcome.

Pretty sure you have the answer, the low side is creating a secondary box around the speakers creating more bass. I am sure others can explain it more eloquently than I can.

I have a pair of bass shy JM Labs bookshelves when on stands in the room, but when I place them into the corner cabinets built next to my fireplace, it is like placing the speaker in a larger box. It creates way more bass then when they are not in the corner cabs.
Click to expand...

Thank you for the prompt reply! I will have to figure out a workaround, possibly an EQ unit with separate settings for left and right.
 
Do you need the speakers to be in the actual corners of the room? If you can move them inward away from the corners that could help quite a bit. Or moving the speakers to a more symmetric arrangement in the room.

Another option that would probably work better than EQ is bass traps. However that may be cosmetically unacceptable, since they would need to be thick and therefore take up a noticeable amount of space in the corners behind your speakers, possibly extending farther out across the ceiling too if it is really that low.
 
NekoAudio said:
Do you need the speakers to be in the actual corners of the room? If you can move them inward away from the corners that could help quite a bit. Or moving the speakers to a more symmetric arrangement in the room.

Another option that would probably work better than EQ is bass traps. However that may be cosmetically unacceptable, since they would need to be thick and therefore take up a noticeable amount of space in the corners behind your speakers, possibly extending farther out across the ceiling too if it is really that low.
Click to expand...

Thanks. The speakers really need to be where they are, based on both the configuration of the room, and how they are wired. (The wires go into the wall and connect to an amp in the adjacent room.)

I don't think the bass trap option will work for aesthetic reasons.

Given the above, I think EQ will be the way to go.
 
You can try but EQ isn't going to correct an imbalanced placemen in the room.

The placement is wrong and wiring should not have been ran that way. You can do your best and live with the result or correct the situation by symmetrical placement. Depending on how low the low side is the shape could be a benefit if correct placement.
 
Mr Peabody said:
You can try but EQ isn't going to correct an imbalanced placemen in the room.

The placement is wrong and wiring should not have been ran that way. You can do your best and live with the result or correct the situation by symmetrical placement. Depending on how low the low side is the shape could be a benefit if correct placement.
Click to expand...

Understood, but in fairness, the room has multiple uses and was not designed strictly for listening. Given things such as window and door placements, a fireplace, and a large-screen TV, there were not many other choices. As with most things in life, there are compromises. Even if the EQ can help me out a little bit, it is better than nothing.
 
As I look at the room, there is one more option that I could try using the existing holes for the wiring. I could place both speakers in front of an adjacent wall. This wall is plaster, and there are windows, but the bottoms of the windows are about six inches above the tops of the speakers. The ceiling height is the same all the way across.

We had considered a wood facade on this wall, to reflect an outside motif of the house. This may sound better than the plaster. No idea when we would get around to doing this, but it is an option.
 
I have a similar room with a sloped ceiling. I started out by hooking up VERY long cheap speaker cables and started moving the speakers all over the room. Listening and learning as I went. I eventually ended up (looking at the speakers) with the right speaker on the low side of the room and the left on the high side. However they are pulled out into the room. (55"to the back of the speaker from the front wall and they are front ported speakers).
I used a live end - dead end approach with acoustics and have the front wall behind the speakers well treated with various diffusion panels and the wall behind me with absorption panels along with bass traps in the corners. This worked well tonally, however with the one speaker on the low side if played havoc with imaging. Diffusion panels on the lower right side wall/ceiling juncture allowed things to come into balance. Things just float and dance in air.
A room is the most important "component" in an audio system IMHO and deserves the proper care to get it right. You will be well rewarded.
Your room and journey may well be different from mine, but try every option. Good luck.
 
jadedavid said:
I have a similar room with a sloped ceiling. I started out by hooking up VERY long cheap speaker cables and started moving the speakers all over the room. Listening and learning as I went. I eventually ended up (looking at the speakers) with the right speaker on the low side of the room and the left on the high side. However they are pulled out into the room. (55"to the back of the speaker from the front wall and they are front ported speakers).
I used a live end - dead end approach with acoustics and have the front wall behind the speakers well treated with various diffusion panels and the wall behind me with absorption panels along with bass traps in the corners. This worked well tonally, however with the one speaker on the low side if played havoc with imaging. Diffusion panels on the lower right side wall/ceiling juncture allowed things to come into balance. Things just float and dance in air.
A room is the most important "component" in an audio system IMHO and deserves the proper care to get it right. You will be well rewarded.
Your room and journey may well be different from mine, but try every option. Good luck.
Click to expand...

Thanks for sharing! Last night I did some experimenting in which I kept the speakers in generally the same locations, but played around with the angles and also the distances from the walls. I was able to get the bass much more centered than it had been. Granted, it is a large and live room, and the speakers are further apart than ideal, so the concept of "center" is a little fluid. Still, the bass now sounds much better than it did previously.
 
Bongo Beater said:
As I look at the room, there is one more option that I could try using the existing holes for the wiring. I could place both speakers in front of an adjacent wall. This wall is plaster, and there are windows, but the bottoms of the windows are about six inches above the tops of the speakers. The ceiling height is the same all the way across.

We had considered a wood facade on this wall, to reflect an outside motif of the house. This may sound better than the plaster. No idea when we would get around to doing this, but it is an option.
Click to expand...

Best bet IMO , get both on the same sloping side ..


Regards
 
HumbleHiFi said:
Bongo Beater, You need to "think outside the box" - the speaker box that is. I don't think you ever said what your speaker model was? But I know from your description it is a cone driver. Your solution is not uncommon, This is a room interfacing with your speakers unevenly problem. I had the exact same issue with a sloped ceiling and unequal distance from each speaker to the ceiling. The BEST solution for your room is, Buy different speakers-sorry. Your speakers are exciting the room modes unevenly because of the ceiling slope/distance. The fix is to buy speakers that by design don't excite boundary room modes as much. In my case I bought Magnepan 3.7i. and its is so much better, the planar speakers will still excite the room some, but not to the same degree as a cone speaker. Its much better, and listenable in my opinion. it worked wonders for me. Maybe a dealer will let you borrow a pair for a few days to try before you buy?
Click to expand...

Thanks, but I already solved the problem!
 
Bongo Beater said:
In our family room, I have two speakers on pedestals in opposite corners of the room.
Click to expand...

It's that first sentance that worries me. Diagonally opposite corners seems to be asking for trouble! Where do you sit? In one of the other corners?

If you can, try to get both speakers near corners on the same wall, preferably the high wall or the low wall, not the ones that are high at one end. Even if this means running an additional length of speaker cable from where one existing cable enters the room from the room next door. Good luck. Peter
 
Hear Here said:
It's that first sentance that worries me. Diagonally opposite corners seems to be asking for trouble! Where do you sit? In one of the other corners?

If you can, try to get both speakers near corners on the same wall, preferably the high wall or the low wall, not the ones that are high at one end. Even if this means running an additional length of speaker cable from where one existing cable enters the room from the room next door. Good luck. Peter
Click to expand...

Not diagonal. Opposite corners of the same wall. One has a high ceiling, one low. but as I stated earlier, I already solved the problem. All is good!
 
I have a somewhat similar situation. However, I have asymmetrical corners on one end of my smallish room (27' x 16'). One end (and corner) houses a small water closet with the master water valve built into the corner. It is enclosed and stretches from the ground to the ceiling and is about 3' x 3'. The adjacent corner (in the same end of the room) has a wood burning stove with the TV in between the corners. The other end of the room has a standard corner and the other corner has an entrance to a walk-in closet. The ceiling is 7' high and has painted peg board (perforated) in place. The room sounds surprisingly good. No bass issues at all. Sometimes asymmetry is a good thing. The floor has carpeted concrete.

My listening chair is in the approximate middle of the room facing toward the TV (and my speakers). My speakers and my listening chair form an equilateral triangle with 8' sides. The back 1/2 of the room is my recording/music studio. As you can see, I have quite a few obstacles and very little room to experiment. So, all I was able to do was experiment with the axial (rotational) plane of the speakers. I have very little room (almost none) to move the speakers forward, backward, or side to side. Actually, I have just a few inches to move the speakers side to side.

Anyway, it was recommended by my dealer not aim the speakers directly at my ears, but aim for the shoulders. What a difference?!! Just that minute rotation of the speakers really improved the imaging. Very noticeable. Sometimes inches matter as does symmetry, and sometimes, asymmetry.
 
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