Solid state amplifiers and sound stage, especially front to back "depth"


I've been enjoying my trial period with the Van Alstine SET 400 stereo amplifier. When I'm done and have collected my thoughts, I may write up a summary.

In the meantime, a question for folks with more experience. I've noticed is that the amp produces a sound stage that is nicely defined and articulate from left to right, but not as much from front to back. (My Adcom was also unable to create sound stage depth.) I know my room is capable of that sound stage because my tube amp accomplishes it.

Question: Is it typical of solid state amps to have less of a front to back sound stage than tube amps? Do they vary in this regard? Or, perhaps, am I failing to do something -- such as re-position my speakers? (After all, I immediately get that sound stage back when I switch amplifier without moving anything else.)

If you have any experience with solid state amplifiers and sound stage -- front to back, left to right, or whatever, I'm curious.

This is not about me keeping or not keeping the amp. There are many things I already really like about it. But I'm wondering about this aspect.

Thanks.
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Showing 1 response by rc22

I have a Lyngdorf 2170 (modded up a bit).

Over the last few years I’ve done many of the usual things aimed at optimizing SQ in every parameter most audiophiles pursue.  Depth of soundstage remained elusive.  I had some depth, but nothing I would consider particularly noteworthy, much less bragging rights.  

Then, about 3 months ago, I put some upholstered ottomans (the size of small-to-medium-sized subs) in the corners behind the speakers and on top of them I placed oak plywood boards 54” H by 16.5” wide that bridge the corners of the room.  And I moved the speakers further into the room by about an additional 10”.  Tweeters are now about 45” from the front wall.  The only add’l thing I’ve done since is add inexpensive spring pods under the speakers.  They been there for about a  month and improved SQ in many ways, but I’ve not removed them to make sure—yet.   I’ve not taken add’l measures to see if I can improve depth even more (treatment on the front wall, perhaps?). But for me, the depth is now unreal.  Not incrementally better.  An entirely different league.  The depth is now perhaps THE standout aspect of my rig’s performance.

Please know, the ottomans, the boards and moving the speakers further into the room improved MANY things, not just depth of soundstage.

I’ve not experienced one amp having depth and another not—in the same set up.  Kind of a tough one for ya, seems to me.

Good luck.