what to do with my cat on my speaker grills

Cats are single minded little beasts. Not really smart, but very clever and willing to take 'risks'.

You may want to check at a pet store. They may have a 'repel' odor treatment.
My MG-1s were so treated by the original owner and my 2-head of cat NEVER went near them in over 15 years. Not ONCE.

Cats DO NOT like CITRUS smell.
Dr. Bronner's Peppermint Castile soap is also on the no smell list. And it is a great shower soap. It is a liquid so dabbing some on a cloth and leaving it next to the speaker may work?

Change the catpacitors in your crossovers.

simeese cats are an odd bread alright.If I were you Id give up,the cat is too smart for your moves no question.Love the answers by the way,cheers,Bob

a squirt gun

i love my cats. this is what i'd try:

1) squirt gun whenever they are on / near speakers
2) jar half filled w/ coins, shake when they're near speakers (cats hate loud noises)
3) scratching post closeby w/ catnip rubbed in
4) aluminum foil / 2 sided tape at base of speakers (cats hate walking on this stuff)
5) citrus furniture polish on speakers (cats hate citrus).

if my house was on fire and i could grab only 1 thing, i'd grab the 2 furries; i can always buy another ______. who cares about sh*t, be nice to the cats.