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How to tame the midrange???

I am almost there with my system, except that the midrange sounds harsh, grainy, and exceptionally digital. Female vocals in particular. It actually sounds like clipping, but I can hear it at any volume level. However, the problem is more noticable as volume is increased. I listen to a lot of acoustic music with prominent vocals, so this is a real problem.
The room is 26 x 28 x 9. Furnishings are 6 piece HT type seating and carpet....nothing else. No treatments at all. I/C cables are Radio Shack's best. I plan to do room treatments and better cables last.
I am thinking a good DAC might smooth things out a bit. Or maybe seperate 2 channel from HT by adding a good 2 channel preamp with HT pass through. (the front speakers are already on seperate amps) Maybe a preamp with tubes. I suppose having the Denon CDP modified is an option as well. My focus is 2 channel. HT sounds good enough as is, and is a low priority. Budget is around 5000.00, but flexible.
The gear is:
Sunfire Theatre Grand II processor
Denon 3910 ....no mods
Classe Seven Hundred Mono blocks for fronts
Adcom 300x7 for center and surrounds (all bi-amped)
B&W 800N fronts
B&W HTM-1 center
B&W CDM9-NT surrounds
Another consideration is that I listen to Comcast Music Choice digital music channels quite a bit through their Motorola box. I think that makes a stronger case for adding a good DAC. I am new at this and rely exclusively on Goner's advise. Your thoughts are greatly appreciated.
baffled
meerp1
17 posts
 
Gmood1 makes a good point by taking the processor out of the mix. Have you tried the Denon & Classe only to drive the B&W's? Again, your gear is nice so maybe a process of illimination might be the ticket. Along those lines you can also try the Denon direct. Not that the Denon is better, which it isn't, but maybe the chain is causing issues. This is a method of troubleshooting. Definately a path to take before spending hard earned cash.
Jeff
sogood51
2,157 posts
 
"midrange sounds harsh, grainy, and exceptionally digital. Female vocals in particular. It actually sounds like clipping, but I can hear it at any volume level. However, the problem is more noticable as volume is increased"

I have a Sunfire Theatergrand II...it did not sound like that in my system. I don't use mine in my music system but I have used it there in the past. I suspect you could have a problem driver in one of your speaker?...try switching the speakers out and putting another pair in their place.

Another thought is that you may have a cumulative effect going on...many components, many with a degree of harshness.

I don't recall any "large degree" of midrange grain or harshness going on when I had my Sunfire placed between my Krell Ksa-250 and Apogee Duetta Signatures for around 6 months...nothing like what your hearing?

Dave
rrsclyde
84 posts
 
Just a heads up--I tried feeding the digital signal from my Cox Comm. (Sci. Atlanta hardware) digital cable box to my Metronome 24/96 Sig. DAC. Works fine on PCM signals BUT NOT when Music Choice channels are selected. So I can only guess that the digital Music Choice signal, at least in my area, is not PCM. I welcome any input.
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owl
139 posts
 
Baffled - how have you addressed power conditioning? I've found that a lot of harshness can be attributable to power quality sensitive power supplies and thererefore benefit dramatically from treatment. Things get smoother, less grainy/edgy and with blacker backgrounds. Be careful here as it can be a two edged sword and squash dynamics in the micro and macro realm if you pick the wrong unit. I've tried a bunch and have settled on BPT Sig 3.5 plus which to my ears is the only unit which provides the benefits without changing tonal balance and in my perception does not hinder dynamics at all. There are other great units out there that you may want to check out as well. An added benefit is that the lowered noisefloor improves dimensionality and the ability of your system to reproduce a 3D soundstage and has similar effect on your video. You may also want to consider dedicated AC lines installed by an electrician. Good Luck.
bgrazman
226 posts
 
I agree with Larry's harshness comment, BUT

I'd seriously consider moving room treatment up in the sequence of things you are going to try. That much bare wall has to have an effect... I'd at least look at the first reflection points and other major problems first.

happy listening
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