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== Amplification ==The Realistic MPA-20 is a 20 watt Solid State PA Amplifier sold by Radio Shack at one time. [[Image:realisticmpa20.png]]Originally there were only two speakers in the speaker system. These could be wired either series or parallel, thus doubling or dividing the total resistance rating.The back of the MPA-20 supports a single connection to the "com" common ground and any one of the positive posts. :*16 Ohms:*8 Ohms:*4 OhmsThere is a 70 Volt connector for using with line transformers.Originally there were only two speakers in the speaker system. These could be wired either series or parallel, thus doubling or dividing the total resistance rating.{||[[Image:mulspeakpubaddr2spor1.png]]|-[[Image:mulspeakpubaddr2spor2.png]]|}== Amplification ==The Realistic MPA-20 is a 20 watt Solid State PA Amplifier sold by Radio Shack at one time. [[Image:realisticmpa20.png]]