Crown ps-400

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A friend is inheriting a pair of SDA 2 (?A). Is the Crown common ground?
SDA 2BTL, VPI Prime, Soundsmith Zephyr MKIII, Rogue Ares Magnum, McCormack DNA 0.5 Gold, ARC LS-17se, Cambridge cxn v2, MIT AVT MA ic’s and speaker cables, ps audio stellar power plant 3

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  • FTGV
    FTGV Posts: 3,649
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    According to the schematic it is. If you have a multi meter you can confirm. You should see only a fraction of an ohm across the amps negative speaker terminals.
  • jonicont
    jonicont Posts: 277
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    FTGV wrote: »
    According to the schematic it is. If you have a multi meter you can confirm. You should see only a fraction of an ohm across the amps negative speaker terminals.

    Thank you. Is this done with the amp plugged in AND turned on? Do I check at the external terminals?

    SDA 2BTL, VPI Prime, Soundsmith Zephyr MKIII, Rogue Ares Magnum, McCormack DNA 0.5 Gold, ARC LS-17se, Cambridge cxn v2, MIT AVT MA ic’s and speaker cables, ps audio stellar power plant 3

  • F1nut
    F1nut Posts: 49,805
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    No, unplugged. Yes, the negative binding posts.

    Pro amps are not the best choice for home audio.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


    President of Club Polk

  • jonicont
    jonicont Posts: 277
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    F1nut wrote: »
    No, unplugged. Yes, the negative binding posts.

    Pro amps are not the best choice for home audio.

    Thanks. Yeah, he’s a kid just starting out. We’ll get him there

    SDA 2BTL, VPI Prime, Soundsmith Zephyr MKIII, Rogue Ares Magnum, McCormack DNA 0.5 Gold, ARC LS-17se, Cambridge cxn v2, MIT AVT MA ic’s and speaker cables, ps audio stellar power plant 3