have you a link on this ?
Here’s the email from tech support
Thank you for getting in touch with Meridian.
Our DSP speakers especially are actually designed to be plugged directly into the wall mains socket and never via any kind of mains conditioner/UPS.
This is because if a speaker goes into a serious fault condition, it will draw a lot more current and in-turn, blow the mains input fuse (as intended to protect the rest of the electronics). If any kind of device/conditioner is in-line, the concern is that it may not supply the required level of current and therefore not blow the mains fuse which could, in extreme instances cause catastrophic damage to the speaker.
So in short, we would always suggest avoiding these types of devices where possible.
Now this killed the idea for me but then there was issues with type of power supplies and imperfect sine waves etc.
Can’t find the specific link on these issues but do remember quotes on burning out power supplies over few months.
Also I noticed my new Sony projector pulls a lot of current on switch on as it tripped the distribution box when connected temporarily to lighting circuit. The ups manual I have for the one that powers my BT ROUTER specifically stated not to use high power demanding kit. So again worth contacting the ups supplier that ok for kit being driven.
So in short I suppose it depends on the type of protection in place on your projector and the quality / size of UPS. Perhaps worth doing what I did and contacting tech support and getting their advice. For me I was trying to protect £15k of kit so wanted definitive answer.
Kevin