Logitech Speakers giving up.

[SYNERGY]

Hi

So I have a Logitech Z 2300 set. Linky & Linky

The speakers connect to the sub via a single RCA cable each. The speakers are finally giving up - crackling alot etc.

I would like to replace them with similar\better speakers while keeping them connected to the sub.

Any thoughts to a local replacement?

Thanks!