Originally Posted by kgveteran
Can any amp be run on 220 ?
Just the ones that are specified to be able to run on 220 volts. How long did you think before you typed that question? ;-)
I use the four prong on my 220 generator, it has a twist lock.
That's all good because some 220 volt appliances need a neutral wire to operate properly.
Most amps have the removable power cord with just three contacts in it. At least my QSC 1450's have only three contacts,
That's because most power amps that run off of 208-250 volts don't need a neutral connection.
A 4 prong plug for 220-type situations will have connections for the two hots, a neutral and a safety ground.
A 3 prong plug for 220-type situations will have connections for the two hots, an a safety ground. It will drop the neutral, which is generally not needed.
But there are a few exceptions to the rule of neutral being optional - devices that need a neutral such as dryers with 220 volt heating elements but 120 volt motors and control circuits.
I never checked to see if it has a voltage dip switch.
BTW ever have the urge to read a QSC 1450 user manual for yourself?
Usually it takes a lot more than a dip switch to make a power amp run at both 120 and 240 volts. There are often two different models of the product, one for each power line voltage.
Some modern equipment uses switchmode power supplies that take thee exact opposite tack - they simply automatically adapt to whatever power you supply, over a fairly broad range. The RMX 1450 is not among them, but some competitive amps (e.g. Crown iTX series) do.