Cleaning horns on Avantgarde speakers?

My friend has a full Avantgarde system with trios and solos for surrounds with some basshorns, he was told by avantgarde to use car wax as they use auto paint for their colors and it works well, his horns look awesome!

Honda spray polish and micro fiber cloth spray polish on cloth. Polish away after coating easy to just dust with MFC.

Do you use Armorall on the backs and poles or is it easier to get them detailed for you.
The wax without cleaning will be a way of cementing in the dirt. Try a small amount of car soap in water scrub lightly with chamois then rinse off the soap but the rinse will make a scene. I always used to use a hose.Dry with your wifes favorite bath towels white or ivory colored are best. Apply the faintest smear of wax let it dry completely. Then use dry chamois to buff avoid the gyro buffers they leave swirls .I like McGuires but the German wax is better they say . I found it to be a PITA.

sounds to me like he only wants to clean the dust off them. I think a damp cloth will do the job quite well.

Spray Windex on cloth and wipe. Will work the best of above said.