From whence does Sound Stage come?


What drew me back to this hobby after dabbling in High School, was listening to a friend’s system, in a room over his garage filled with over-stuffed furniture, at least seven different amplifiers and twice that many speakers. What was new to me was a room literally filled with sound, and I couldn’t tell where it was coming from. I climbed over the furniture and put my ear to speaker after speaker, but I was never able to locate the source of the sound. It was a wonderful, awe-filled, experience.

Fast forward to the present. I have now built several systems, in different rooms, with different components. Sometimes I get a ‘sound stage’ where the speakers disappear, sometimes I don’t. I have been told that getting the speakers to disappear is all a matter of placement in the room: “Give me your room dimensions; and I’ll tell you where to place your speakers.” But I can tell you, some speakers disappear, and some speakers announce their presence with every note. I have had odd staging where a particular sound appeared un-naturally at the wrong place (like a cymbal hit at my feet); only to have the issue resolved to a more coherent shape with an upgrade to the analog output stage of the DAC. I have had a decent sound stage cast by a particular pair of speakers, only to have it destroyed with the use of a sub-par power amplifier. I’ve heard reviewers and designers talk about how their component offers sound stage depth as well as width (depth seems to be more difficult to achieve). And then there is the old canard about how tube amps present a ‘halo graphic’ sound stage. I can detail the equipment configurations that have I have put together that succeeded or failed at the goal of presenting a great sound stage, but I’m trying to ask a general question, I am not a bot, and I’m not seeking help with a particular configuration, just help on developing a strategy to tackle the issue of sound stage and imaging of instruments within it. 
I will say that the best sounding solutions I have developed thus far both involved a Schiit Yggdrasil (now at ‘Less-is-More) into a SS McIntosh C100 (circa 1992) and either a tube Rogue ‘Stereo 100’ or a SS McIntosh MC252 power amp powering either the Warfedale W70E or B&W 801 Matrix speakers. If I substitute different amps, speakers, preamp, or DAC, the pyramid crumbles and I start hearing two speakers again; I lose my ‘sound stage,’ which is really concerning (to me). Anyone with more than two years into this hobby is qualified to address this question. I need some help, I can’t just keep throwing equipment (and money) at this issue. Any ideas?

128x128oldrooney

@frankmc195 When I hear my speakers these days, I wonder what’s wrong, hence this post. 
 

@campoly I’m after (and have had) the experience you describe. Even though I have applied more power recently, I’m missing the sparkle in my system. Thanks for the response. 
 

@firstonetallguy You’re welcome. :-)

@oldrooney 

Your room is probably more the issue than your equipment. If you’re hearing cymbals by your feet, the sound is reflecting from someplace it shouldn’t. It sounds like some well placed sound absorption is what you need.

OP:

I think you completely misread my post, let me try to clarify.

Diffusion and reflection are two different things. Just like in light, reflection produces a mirror image, but diffusion produces a soft, random re-direction of light or sound. In light, you'd achieve diffusion by looking through frosted glass.  Lots of light fixtures use this.

Yes, you can calculate reflection distances, but diffusion is much harder. Sound isn’t reflected, it’s scattered, so it produces a steady stream of arrivals instead of 1 solid spike.

Imaging is enhanced by adding diffusion at the points of a cross (looking from above). Behind the speakers, to the L and R (direclty to the sides, not at 1st reflection points), and behind the listener. These are not necessarily all-encompasing panels. Maybe 1/3 of the space to 1/2 behind the speakers, and narrowly to the sides.

@oldrooney 

How much have you actually played with speaker positioning? 

I don't know how applicable this might be for you, but I had to experiment much more than I'd ever expected before I finally got this right. One of the most dramatic improvements has been greatly improved sound-stage depth. 

 

 

There's another thread here about soundstage depth that has many tracks listeners use to measure that metric. I used some of those tracks to compare stage depth for my setup. It's quite amazing how much care some artists put into their track's productions.