What is the difference between the old MS and MPS series amplifiers?
The Mobile Series were designed to provide optimal power at high impedance loads such as 4 ohm stereo or 4 ohm bridged. They also have a higher wattage rating for competitions such as IASCA or USAC. The Mobile Professional Series provide their optimal power into low impedance loads such as 1 ohm bridged or .5 stereo. The MPS series have much lower competition wattage ratings. They are often called “Cheater” amps because they allow competitors to compete in lower power brackets, when in reality they are using a lot more real world power. When I took the cover off my MS/MPS amplifier I noticed that the right channel’s polarity is reversed from what is labeled on the outside of the amp for the speaker terminals. Did someone wire the inside of my amplifier wrong? No, you’re amplifier is wired correct. Since the MS/MPS series amps are able to run in tri-linear mode internally the polarity of the right channel is reversed. When you wire speakers to your amplifier use the information that is
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