Positioned well clear of walls and with the ports left completely open, the 683 sounds just a little too bass heavy, suggesting it would be happier in a somewhat larger space than the 4.3×2.6×5.5m room used for our tests.
Inserting the hollow bungs proves, “just right”, delivering a bass that is both beautifully balanced, yet also deep and purposeful if a shade lacking in crispness.
With bungs, the speaker delivers a thoroughly impressive overall neutrality, leading with its high-quality midband, and bringing nice warmth and ‘body’ to voice reproduction.
It can sound a trifle ‘shut-in’ if the system is being played very quietly, but by the same token it avoids becoming aggressive when the volume
is turned up.
On the whole, this speaker does a fine job that leaves little room for criticism. Its sins are merely that the sound could be more exciting, as could the physical appearance, which would certainly be enhanced if a proper plinth was supplied. But beauty is, of course, in the eye of the beholder.