I’d keep a spray bottle with water nearby and if the kitties approach the speakers or start to scratch give them a good squirt and they’ll get the message quickly — they’re smart and learn fast. Plus the citrus trick I mentioned above.
On on another note, I’d highly recommend avoiding mass-market crap cat food. We fed our prior cats Science Diet, which sucks BTW, and had unscheduled trips to the vet every year. With our current cats we switched to Solid Gold food and over five years have had zero unscheduled vet visits and they get top marks in their annual checkups. It’s a little more expensive, but not that much and you’ll have healthier cats and likely save the difference or more on fewer trips to the vet. Here’s their kitten food…
https://www.amazon.com/Solid-Gold-Kitten-Heaven-Chicken/dp/B074Q6N7KF
https://www.amazon.com/Solid-Gold-Kitten-Flavorful-Chicken/dp/B0C153RR4F?th=1
After kitten food we switched to this, which they loved…
https://www.amazon.com/Solid-Gold-Indigo-Moon-Grain/dp/B01DT327Z0/ref=sr_1_4_pp?crid=3NIDHG4EX7HEW&keywords=solid%2Bgold%2Bindigo%2Bmoon%2Bdry%2Bcat%2Bfood&qid=1696085133&s=pet-supplies&sprefix=Solid%2BGold%2Bin%2Cpets%2C216&sr=1-4&th=1
But as our cats got older and started gaining weight (they are strictly indoor cats) we switched to this that worked great to keep them fit…
https://www.amazon.com/gp/product/B00X0GTWTG/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
BTW, if you occasionally wanna feed them tuna for some variety/treats get either chunk light or skipjack tuna — not only is it cheaper and healthier, it contains very low levels of mercury relative to other types. Sorry to take this off topic, but just in case you’re new kitty parents I thought it might be helpful. Best of luck with the speakers and your new mini lions!