Previous Thread
Next Thread
Print Thread
Rate Thread
Page 1 of 7 1 2 3 4 5 6 7
Bass reduction when sitting down
#322720 09/15/10 11:21 PM
Joined: Oct 2006
Posts: 375
R
Riker Offline OP
devotee
OP Offline
devotee
R
Joined: Oct 2006
Posts: 375
When I am standing in front of my 2 seat leather loveseat, pointed directly at my 2 main speakers I hear plenty of really good bass and good over all sound. When I sit down on my loveseat, the perceived bass response is dramatically reduced. And the mid range becomes "nasal". I think the mid range issue is due to the reflective nature of my leather seat, as the effect is not as pronounced when I put a thick blanket over it, but the bass dissapearing is a mystery to me !! I can't figure out why ?? It must be the chair, but how can that be ? when I sit on the very edge of the chair, most , not all, of the bass is heard, but when I sit back in a comfortable fully seated position, the bass is gone ! or very thin compared to standing up or on the edge. I moved my loveseat out of the way and sat on a low back office chair. The sound did thin out a bit at my current listening position, from the room acousics, but I could still hear fairly decent bass. The chair might be the issue but I don't understand how that is and I still need to keep that chair !. Does it make a difference that I have a thin (but good) carpet glued to concrete as my basement floor where everything is setup ? Does the floor come into play here or is it just the stupid chair ? ? I'm exasperated :-(


Acoustic Zen Adagio, Veritas center, Axiom EP500, QS8s, Anthem AVM20, MC20,Adcom GFA7400
Re: Bass reduction when sitting down
Riker #322722 09/15/10 11:30 PM
Joined: Dec 2007
Posts: 7,786
axiomite
Offline
axiomite
Joined: Dec 2007
Posts: 7,786
What happens if you shift your love seat forward or back and sit in it? Do you have the same effect?

It is possible that there is some absorption going on with your love seat, but most likely it is that your seat is located in a room null.


Fred

-------
Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!
Re: Bass reduction when sitting down
fredk #322724 09/15/10 11:31 PM
Joined: Aug 2009
Posts: 6,015
axiomite
Offline
axiomite
Joined: Aug 2009
Posts: 6,015
Try moving the subwoofer.

Re: Bass reduction when sitting down
fredk #322733 09/15/10 11:57 PM
Joined: Oct 2006
Posts: 375
R
Riker Offline OP
devotee
OP Offline
devotee
R
Joined: Oct 2006
Posts: 375
Well I know that there is less bass at my listening position and I have moved the seat forward and backwards to try and fix the problem, but it has minimal impact. I think you have something though when you said the seat itself could be absorbing the bass .. I never though about that !!. When I used the office chair, which obviously did not absorb much if any bass, the bass was closer to when standing. I would not say that I sitting in a null per say, but there is less bass at that position. My point is that when standing at the same position as sitting, the bass is hugely decreased when sitting, from the same spot.


Acoustic Zen Adagio, Veritas center, Axiom EP500, QS8s, Anthem AVM20, MC20,Adcom GFA7400
Re: Bass reduction when sitting down
CatBrat #322734 09/15/10 11:57 PM
Joined: Jan 2004
Posts: 13,840
Likes: 13
shareholder in the making
Offline
shareholder in the making
Joined: Jan 2004
Posts: 13,840
Likes: 13
That is the issue with subwoofer frequencies in a room, they will differ in all locations. This is why the subject of multiple subs correctly placed comes up to even out frequencies, peaks, nulls, in all locations.


M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85


Re: Bass reduction when sitting down
SirQuack #322735 09/15/10 11:58 PM
Joined: Jan 2004
Posts: 13,840
Likes: 13
shareholder in the making
Offline
shareholder in the making
Joined: Jan 2004
Posts: 13,840
Likes: 13
Your head is higher when you are standing, most likely in a null of certain frequencies.


M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85


Re: Bass reduction when sitting down
CatBrat #322737 09/15/10 11:59 PM
Joined: Oct 2006
Posts: 375
R
Riker Offline OP
devotee
OP Offline
devotee
R
Joined: Oct 2006
Posts: 375
I am not using a subwoofer in this case. Just 2 channel stereo with speakers that are rated down to 30hz. If I use my subs, I can get the bass back but I am trying to figure out why it is dissapearing in 2 channel stereo mode.


Acoustic Zen Adagio, Veritas center, Axiom EP500, QS8s, Anthem AVM20, MC20,Adcom GFA7400
Re: Bass reduction when sitting down
CatBrat #322738 09/16/10 12:00 AM
Joined: Jul 2005
Posts: 738
aficionado
Offline
aficionado
Joined: Jul 2005
Posts: 738
Sounds like you have a low freq. null, right in the worst spot possible, you fav. sofa. Like others have said, try moving your sofa, woofer, speakers, you may only have to move a few inches to get a better experience. You may even try the sub crawl.


paul

Axiom M80, VP180, Qs8, EP500
Epson 3020
Rotel RB-880
Denon AVR-990
Re: Bass reduction when sitting down
SirQuack #322740 09/16/10 12:04 AM
Joined: Oct 2006
Posts: 375
R
Riker Offline OP
devotee
OP Offline
devotee
R
Joined: Oct 2006
Posts: 375
I do have 2 subs, which I think I have placed properly, one in the front, one in the back in diagonal oposites. But in this case I am only playing 2 stereo speakers that are rated at 30hz and when standing in front of them, they really have deep bass, I sit down and .. GONE !..


Acoustic Zen Adagio, Veritas center, Axiom EP500, QS8s, Anthem AVM20, MC20,Adcom GFA7400
Re: Bass reduction when sitting down
Riker #322742 09/16/10 12:09 AM
Joined: Jul 2005
Posts: 738
aficionado
Offline
aficionado
Joined: Jul 2005
Posts: 738
Maybe you should invest in some good head phones, sorry, just kidding.

Boy that can be annoying problem. I would still recommend moving the speakers, play with the toe or space from the back wall, or even raising them a few inches (use books or blocks, temp ofcoarse) to see if that helps.


paul

Axiom M80, VP180, Qs8, EP500
Epson 3020
Rotel RB-880
Denon AVR-990
Page 1 of 7 1 2 3 4 5 6 7

Moderated by  alan, Amie, Andrew, axiomadmin, Brent, Debbie, Ian, Jc 

Link Copied to Clipboard

Need Help Graphic

Forum Statistics
Forums16
Topics24,940
Posts442,457
Members15,616
Most Online2,082
Jan 22nd, 2020
Top Posters
Ken.C 18,044
pmbuko 16,441
SirQuack 13,840
CV 12,077
MarkSJohnson 11,458
Who's Online Now
0 members (), 145 guests, and 4 robots.
Key: Admin, Global Mod, Mod
Newsletter Signup
Powered by UBB.threads™ PHP Forum Software 7.7.4