Prosine True sine wave verses Modified?

[Roland DuBree]

Since it looks like my 2.0 Prosine failed an will have to be replaced. (PER XANTREX Prosines are a NON repairable product and cannot be repaired) What is advantage of a true sine wave over a modified sine wave which is $400.00 to $500.00 LESS EXPENSIVE? Is True sine wave really worth the extra bucks?

[Joel Ashley]

Many of today's electronic devices and motors don't work properly when supplied by other than true sine wave power, Roland.  You risk at least some frustration along the way if not costly equipment loss.  In the long run you are likely money and well-being ahead to make the extra investment.

Others here are more capable at explaining the technical and operational differences.

Joel

[Les Brandt]

If something else does fail due to poor power supply application, you may void warranty on the failed appliance or electronic device.

[Gerald Farris]

Roland,
If you are not using any induction A/C motors such as a residential refrigerator or sensitive electronics that run on the inverter circuits, you will be fine with a modified sine wave inverter. Remember that notebook computers do not run on direct A/C power, but they run on batteries or current from the battery charger (brick). I personally prefer a pure sine wave inverter, but if you determine that you do not have the need, you can save the money.

Gerald  

[Joel Weiss]

Everything we had onboard worked fine with our Xantrex MSW inverter except our induction burner.  The problem these days is that you never know what will work and what won't.  When our Xantrex failed I never considered anything other than a PSW inverter.  We installed a Magnum which seemed, to me, to be the state of the art these days.  They aren't cheap but their specs are impressive.

[LarryNCarolynShirk]

I had an AC clock that would not run on a modified sine wave inverter.  Change to pure SW and the clock worked.  You never know what else may be affected.  I would get a PSW inverter.

Larry

[Bill Sprague]

When ours was new, I bought a really cool blender that had an electronic controller.  The cool part was it had a LCD display with a library of exotic drink recipes.  First time I used it on the inverter, it fried.  

Once had a little Marquis envy and wanted a doorbell.  I found a wireless model with a GE brand at Wal-Mart.  It worked perfectly.  Every time it was pushed the dog burst into barking.  About 20 minutes after I unplugged from shore power it melted.  Thinking it was defective, I got GE to send me a new one.  It melted on inverter power too.

We had a an expresso machine that we used so much it sprung a leak.  When we forgot where we were and tried to run it on the inverter it would lock up in mid brew.  It took shore power to get it to defibrillate.

The microwave continues to work, but when on inverter power it sounds funny.  I've never known why.

[Roland DuBree]

By the way to concerned about the Magnum vs Prosine. I looked into it read up all the data on the Magnum MS-2000 and it appears to be a  much better unit.  Best of all I found a place to buy it with the RC remote and it is only $150.00 more that the $1343.00 30% discounnter Prosine out of warranty price.  So i will get the Magnum MS-2000 pure sine wave unit.  Another good deal about the Magnum is the remote is wired with the RJ11 4 wire phone cable that the old Prosin used.  The new Prosine uses a 6 wire phone cable. Should be able to use the old Prosine cable already well installed and not have the ugly job of getting a new 6 wire cable routed from the very rear to the front of the coach.   Thanks to all for the talk to use a Magnum.

[Jerry Emert]

Roland, I installed a Magnum after my Xantrax fried.  I used the same control cable also.  During the install I noticed that one of the wires in the cable is reversed from standard  or the cable that was installed.  I had it installed by a mobile guy and that should have been my first clue that he didn't know what he was doing because he didn't notice the oddity.  I noticed when looking at he directions.
Good luck
Jerry

[William Brosam]

i just replaced my xantrex with a magnum ms2812 and now my tv doesn't buzz anymore nor does my fans. its great.

true sine wave for the win.