Can I use this Amp with SDA's?

Hansen2112
Hansen2112 Posts: 13
in Vintage Speakers
Just picked up in Onkyo M-506rs power amp and wanted to be sure it was safe to use with some sda-2s I have. Can't find info if this amp is common ground or not. If anyone has any information that would be great, don't want to damage this thing.

Thanks
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Comments

  • SeleniumFalcon
    SeleniumFalcon Posts: 3,760
    edited April 2023
    From the circuit schematic it appears the speaker negatives are tied together, so it should be fine with a common ground speaker connection. You should be able to place one probe on the left speaker's negative terminal and the other probe on the right speaker's negative terminal with a Volt/Ohm meter set to resistance and read "0".

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  • Hansen2112
    Hansen2112 Posts: 13
    Great, thanks for the reply. Just to clarify, if I do as you instructed with the multimeter and get a zero then I am good to go?
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  • nooshinjohn
    nooshinjohn Posts: 25,392
    yes...
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  • Hansen2112
    Hansen2112 Posts: 13
    When set to resistance I get a 0.2 reading
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  • RTally
    RTally Posts: 15
    edited April 2023
    Hansen2112 wrote: »
    When set to resistance I get a 0.2 reading

    Now touch the two meter leads together. Do you still get a 0.2 ohm reading? If so, you are good to go because you are measuring the resistance of the leads and meter connection (plus any zero offset of the meter).
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  • Hansen2112
    Hansen2112 Posts: 13
    Yes sir, that's what I got. Thanks for the help and explanation, much appreciated!
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