Here's an idea,
1) figure out how much electricity the 590ax draws. You can do this by picking up a Kill-A-Watt EZ at H-Depot for $30.
2) Pick up an Ultra Isolation Transformer on eBay that is about twice the wattage or VA that you will need. Cost depends on the size you need, and usually from $100-$500.00
3)Go to your breaker box and find the breaker that is used for your system. Have the transformer wired directly to the breaker on the transformer input side and wire the output side with the Romex that leads to your system.
Breaker>Transformer>System
Your system will be protected from spikes and surges as well as isolated from all of the other noise on the line.
Check building codes before doing this!!!
Good Luck,