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Speakers sound best facing wall????

Should I complain? - After months of tweaking and testing various components, I found my perfect sound. It really sounds beautiful and genuine (I listen only to classical; and authenticity is paramount), and the stereo image is there, when speakers are turned away from me, facing the wall at 135 degrees. I am looking at their backs when listening,

So, I am really happy. Or should I? With that very odd speaker position, something must be very wrong somewhere???

Ever since I took on my old hobby again (it had been in neglect for 30 years), bought 2 different solid state amplifiers (a powerful and very well balanced Sony TA-FA3ES, and a lower quality Technics), 2 different cd players (Arcam and Cyrus), 2 different sets of loudspeakers (Heybrook Heylo and Tannoy Revolution), a Velodyne subwoofer, a power conditioner (Belkin) and 2 sets of shielded IEC power cables and interconnects, I have been battling a problem:

*****an ear-piercing treble*****

No matter how low I would adjust the treble on my amplifier, and no matter the combination of amps, cd players, speakers etc., their position, my armchair's position, that problem was still there... until I turned the speakers away from me.

Room acoustics? - Well, all my equipment is in my living room, which has a normal height, and an odd, asymetrical shape. See plan. The house is made of timber, and the walls are painted plaster panels, with 2 dozens glass covered pictures in wooden frames. The room is carpeted, and slightly emptier than an average living room (3 armchairs, 2 wooden cabinets and audio rack). The wall which the speakers are facing has a curtain. The speakers are 130cm / 4ft away from the wall.

If not the room acoustics, what may be causing the ear-piercing treble when speakers are turned towards me? - Dirty power that the power conditioner cannot cope with? Faulty tweeters (on 2 different sets of speakers???)? Should I worry, since I have my perfect sound with the speakers facing the wall? - Any advice appreciated!
waryn
plato
1,543 posts
 
Waryn,

From what you say, I'd say that your hearing is unusual. I have a friend who has the same kind of ultra-sonic hearing. He hears high-frequency sounds on certain of my CD's that drive him crazy. He asks me if I hear it too, and quite honestly I can't... not even a hint of what's bothering him. So I know this is possible.

I think trying a tube amp may help you a lot, and beyond that, either a good equalizer (preferably analogue) or maybe using a preamp (or speaker) with a treble level control could provide a further tapered treble reduction that you could dial in to your taste.

Good luck to you!
markphd
667 posts
 
Well, I'm sure there are psychologists at New Zealand's fine universities. However, avoid the ones who would want to implant electrodes in your brain. Leave that for the real guinea pigs.
stanwal's avatar
stanwal
3,147 posts
 
The older Quad preamps had some very good tone controls, variable slopes at chosen frequencies , etc. The 44 is the last one I had and it was quite good at controlling bad rooms. I have not used the new ones but would suggest you investigate them. The 44 itself is not a bad preamp and I would prefer it to any of the equalizers I have heard in a remotely similar price range. If you can find a used 44 you could probably purchase it and resell it if it did not help without taking much of a loss. Only problem is that it requires DIN adapters. The Quads were famous for giving excellent sound for their cost and were aimed at music lovers rather than hi-fi enthusiasts per se. What I mean is that they thought it perfectly normal that the listener might need to adjust the sound for room or recording while the purest audiophile regards tone controls as invention of the devil. There are several pairs of their new amps and preamps on audiogon ; you might investigate them. They would definitely be softer than what you are now using.
rockvirgo
587 posts
 
Do you most notice the piercing treble pain only on upper register flute, violin and piano bits? That's the sound of preamp distortion. When I had that problem an old Threshold FET ten hl made it vanish. I'd imagine any other top quality preamp would do the same.
chazzbo
1,007 posts
 
Note that many top pre's have di-pole designs or at least rear firing tweeters.Just thought I'd toss that in.Your speakers are probably to blame interacting with room.Treatments or a DSP might be what's in order to preserve what you like and get rid of what you don't.If you Thiel was your speaker I'd know problem.I sold Krell a while back and was blown away how bad one customers Thiels matched with Krell in a hard room sounded.But that's taste.
Chazz
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