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Sound quality vs. volume

Looking for a bit of expertise here:

I recently made a few changes to my setup and while overall pleased with the results, I’m on the quest for better.  I’m hoping you all can help me diagnose an issue I’m hearing.

When listening to music at lower volume levels - say less than 1/2 total volume, the clarity, imaging and dynamics come across far more coherent and “in focus”.  To use an often over-coined phrase “It’s like I’m there in the room”.  As I start to push the volume up a bit, closer to live-performance levels, the sound becomes increasingly “mushy”.  I know, a highly technical term, but the best way to describe what I am hearing.  The bottom-end loosens up - getting a bit boomy, the crispness of the mid-range and highs fade and the imaging falls out of focus.  These are all incremental with volume until I get to the point where it’s just unbearable.   

I’m no expert by any means but feel it might be room acoustics.  I already know I have a less than ideal setup with a nearly square room (21x20ft) with 60% of the surface covered with clear birch wood paneling. Some things we can’t change (easily).  I do not have any acoustic treatment, just lots of soft furniture.  What I find interesting is that my old setup (Magnepan 1.6) didn’t suffer to such a degree.  Maybe with the new setup there is more to loose?  A mystery.  

For a bit more context:  
Speakers:  Dynaudio Contour 60
Streamer: SoTM sms-200 Ultra
Amplifier: Peachtree Nova500

Within the 20x21ft. room, my speakers are 4ft. from the wall, I am seated 13ft. from the front wall (a bit back from room center). Speakers are 9ft. apart.

Any thoughts?  


wanderingmoo
lhasaguy's avatar
lhasaguy
336 posts
 
I am with the folks who believe your amp is a significant part of the issue.  If you can borrow tour friends Diablo 300, that would be an inexpensive way to make that determination.

When I went from an Adcom amp to McIntosh 501s driving 3.6 Maggies, the headroom opened up greatly and the clarity was / is terrific at high sound levels - think Allman Bros Band.

It is understood about your room, but thinking about moving from Maggies to you current speakers, the ideal position for the new box speakers will be different from the Maggies.  I believe you are pretty much locked into the current location from your posts.  It can be a trade off when integrating a 2 channel system into a Home Theater set up.

Good Luck in your journey!
wanderingmoo OP
29 posts
 
Lhansaguy: Good points.  I’m trying out the Diablo tomorrow.  I’ll let you know what comes of it.  I think I have a little bit of a lot of things going on with improvements possible on multiple fronts.  

To your point about speaker placement.  I discovered that as well.  When I first received the Contours, I placed them in the same location as the Maggies and that didn’t work at all!  Had to move them out considerably and toe them in another 10 degrees or so.  

I completely agree with the trade-offs.  

Question:  I’m thinking of putting up Rockwool panels behind my projector screen - which I believe is PVC (not acoustically transparent) in order to try and absorb some of the lower-frequency reflections.  Does anyone think this is a good idea?  (2” Roxul panels) 

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jji666
534 posts
 
Peachtree is nice gear but IMHO not meant for your primary listening system if that is where you go to rock out. Peachtree is good for near field or a pretty sound at moderate volumes in a social setting.

I think you will benefit from a true high current amp. Not WPC alone, high current.

Also, a REL B3 is a nice sub with good controlled bass.  I’d use it for 2 channel.
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