I got a used pair of JBL eon 15Ps for real cheap...since there is no 1/4" plug in on the speakers, to connect them to my mixer im running a 1/4" instrument cable into a female 1/4" to male XLR adapter into the speaker. This has been working but I'm finding here and there I need to run over and secure the connection because it starts falling out after a while.

Can I use a 1/4" to male XLR cable so I don't need to worry about the adapter to the speaker? I don't want to lose any sound quality though...what cable should I use?