Could you possibly cut out the material in the shelf and/or wall so that the existing speaker enclosure could fit inside the cavity that results from said modification? This way, the strategic design of the speaker enclosure could perform its job as originally intended and you may be able to achieve an acceptable fit. there will likely be 3.5” of space between the inside dimension of the wall and at least 1/2” or more of wall thickness, which would give you the 4” that you are looking for. That’s what I would do.
Shrink Totem 1's?
Hello
New here. I have a pair of Totem 1's which have been in storage for a few years, in order to get them to fit on my bookshelf I plan to cut them with table saw and take about 4" of depth away. These are rears and space is limited. I have low expectations on the outcome but I'll keep this post updated as what materializes with this project. PS these are about 5/10 condition so not too worried about the outcome. Also fronts and center are all Totem (in better condition). Wish me luck. Thanks