Yes, Axiom subs do have that switch. Graeme - check out the manual for the details, under Step 5.

 Originally Posted By: Axiom EP500 Manual
ON/OFF AC POWER/VOLTAGE SETTING: Your subwoofer is supplied with a pop-out voltage regulator set for use with 100 - 120 volts from the A/C line. It can be easily removed and turned over to set your EP500 or EP600 to 220 volts from the A/C line. See diagrams on the next page. The EP500 & EP600 come with a three-prong power cord compatible throughout the United States and Canada. Residents of other countries will need to purchase a converter/adaptor or the proper power cord that fits your specific socket.


You're all set once you get the plug adapter.

Jason


Epic 80-800: HG Cherry