There is no reason whatsoever that your plan won't work, but trust me it won't work, this is IKEA stuff we're talking about, it doesn't perform as you'd hope, the foil covering will rip as you cut it and it'll be all wonky no matter how careful you are.
What might be a better idea is to wall hang the upper part of the unit, maybe with some nice lights behind and then get rid of the lower cabinet and put your speaker in the gap.
Or get some nice shelving made up that fits snuggly in the alcove.
IKEA stuff is great in certain applications (actually is shit but I don't wish to offend anyone) cutting it down like you suggest will make it even shitter.
Brun
There is no reason whatsoever that your plan won't work, but trust me it won't work, this is IKEA stuff we're talking about, it doesn't perform as you'd hope, the foil covering will rip as you cut it and it'll be all wonky no matter how careful you are.
What might be a better idea is to wall hang the upper part of the unit, maybe with some nice lights behind and then get rid of the lower cabinet and put your speaker in the gap.
Or get some nice shelving made up that fits snuggly in the alcove.
IKEA stuff is great in certain applications (actually is shit but I don't wish to offend anyone) cutting it down like you suggest will make it even shitter.
You'll thank me later
Cheers