simple amp question

[devdog 10+ year member]

my amp manual says "Never connect the speaker cables with the chassis ground". does this mean i just have to unplug the ground wire if i want to replug my subwoofer wires?

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[Mclovin it son 10+ year member]

hmm never heard of that before

 

[devdog 10+ year member]

"This may destroy your amplifier" Its an AP1500

 

[dappa5 10+ year member]

it refers to old old old skool setup where speakers actually use a one wire set up along with a chassis ground /// this does not alpy to any thing modern

 

[dappa5 10+ year member]

Back in the days of yore, car radios had one connection for the speaker and the other side of the speaker went to the car body. Sometimes, the radio had two connections – the second being connected to the radio chassis, which in turn was connected to ground. There were variations on the theme as some aftermarket radios were capable of being used with either positive or negative ground cars, and, therefore, the speaker was connected to the connectors provided on the radio. I have one of these in my collection – the radio can work from either 6V or 12V, positive or negative ground.

In an older radio, there are basically three sections – the power section, tuner and the amplifier. The power section usually consisted of nothing more than a simple filter. The amplifier was only capable of producing a small amount of power, usually 3 to 5 watts. Component technology of the time and other design considerations made higher outputs impractical. The output of the amplifier is referenced to ground.