Hi all
Well I must say I’m with Wendy on this some folk have a funny idea what stereo is.
In any case unless you know the distance between the final pair of stereo speakers.

Taken on average this seems to be about 6 to 8ft then this is the width of your whole sound stage.
Within that you can place a whole concert Orchestra violins left a bit and so on but even then the at the listeners end the sound stage is going to be squeezed up compared to the concert hall.

In the above scenario assuming the drums were at the centre front then, no parts of the kit should be more than a few % right or left of centre with respect to the whole full left right pan, of your sound stage width.
Other wise it will sound like one of those dreadful stereo demo records that used to be about, in the early days of stereo.
We could talk all night about ideal stereo speaker widths, stereo or multi channel mic
Placement. Listening on headphones or near field monitors jest the width of the keyboard across, and don’t forget in car limited by the cars width.

But in my opinion the aim should be to get a sound stage reflect the placement of the original instruments as a percentage of left and right pan from centre.
That way it should scale fairly well to any stereo pair width.

And that’s before we start on bring instruments to the front by playing with the gain
On multi mic mixes, or just the EQ if it is a simple stereo pair mic recording.
Have fun
Mike

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