Don't Beat Me Up...but...

Alwishus
Alwishus Posts: 58
edited April 2013 in Vintage Speakers
I need to know how to make sure that an amp has a common ground. I vaguely remember something about measuring between negative's with an ohm meter and it has to measure below .05 amps...????? Sorry everyone, I'm looking at an amp that I like and want to make sure it works with my SDSs. I'm hosting a little party at the moment (with my SDSs groovin in the background) and can't be rude by sitting on my pc trolling the Polkie Forum. Any help is much appreciated!!
Post edited by Alwishus on
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  • F1nut
    F1nut Posts: 50,557
    edited April 2013
    What is an SDS?
    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

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  • decal
    decal Posts: 3,205
    edited April 2013
    Sexual Deviant Slave ??????
    If you can't hear a difference, don't waste your money.
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  • Alwishus
    Alwishus Posts: 58
    edited April 2013
    F1nut wrote: »
    What is an SDS?

    lol...woops. SRSs
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  • Alwishus
    Alwishus Posts: 58
    edited April 2013
    alright, alright. I already know F1 is an encyclopedia of audio everything. You could have busted my chops AFTER you gave me an insightful answer to my common ground question.

    Sexual Deviant Slave??? dude...:eek:
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  • F1nut
    F1nut Posts: 50,557
    edited April 2013
    I vaguely remember something about measuring between negative's with an ohm meter and it has to measure below .05 amps...?????

    If the measurement is below 1 ohm (not amps), you should be fine. Meaning, it's a common ground amp.
    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

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  • Alwishus
    Alwishus Posts: 58
    edited April 2013
    F1nut wrote: »
    If the measurement is below 1 ohm (not amps), you should be fine. Meaning, it's a common ground amp.

    Thank you sir...you are a gentleman.
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  • ROHfan
    ROHfan Posts: 1,014
    edited April 2013
    Put the meter on "continuity" with the "alarm" on. If it beeps when measuring across the negatives, then you have continuity, or, direct short. AKA common ground. Ohm measurement should be "0."
    TV: 65" Samsung QLED 4K
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  • Alwishus
    Alwishus Posts: 58
    edited April 2013
    ROHfan wrote: »
    Put the meter on "continuity" with the "alarm" on. If it beeps when measuring across the negatives, then you have continuity, or, direct short. AKA common ground. Ohm measurement should be "0."

    ty ROHfan
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  • F1nut
    F1nut Posts: 50,557
    edited April 2013
    Common ground amps do not always test at 0 ohms.
    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

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  • Schurkey
    Schurkey Posts: 2,101
    edited April 2013
    And "continuity" does not have to mean "low resistance".
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