Easy Way to Check for Common Ground Amplifiers

[gdsk39a]

Take your ohmeter and place the negative wire on the negative speaker post of the amplifer then take the positive wire and touch the amplifier chasis. If you get a 0 ohm reading then you have a common ground amplifier.

Cool?:cool:

[ben62670]

Not how its done. You check for continuity between the negative speaker terminals. If you do have continuity you take a piece of heavy gage wire, and tie the two negatives together. No after saying that FIRST contact manufacture of your amp.

[gdsk39a]

Good catch I was refering to mono block amplifiers. You are correct for two channel amps.

[heiney9]

Amp powered up or powered down or doesn't matter?

[MikeC78]

Amp powered up or powered down or doesn't matter?

Any resistance reading or continuity check is done with power off.:cool: