what voltage should the lamp socket produce?

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This topic contains 7 replies, has 7 voices, and was last updated by Profile photo of nottooloud nottooloud 1 month, 1 week ago.

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  • #71900
    Profile photo of drc_online
    drc_online
    Participant

    Hi there, I recently bought an LED lamp for a Qu16 desk and it didn’t work when plugged in.
    The lamp is the Adam Hall SLED 1 ULTRA XLR 4A.
    I checked the lamp with an external 12V PSU and it works fine but not in the Qu16.
    I measured the voltage on the plug when the lamp was in and it was 11.85V which is a little low.
    Is this still in spec?
    Does anyone know what voltage is on the lamp socket on their Qu16 desk?

    Thanks

    Dave

    #71901
    Profile photo of JimmyB
    JimmyB
    Participant

    If it’s other than an A&H light you will most likely need to swap the +-/ wires in the light.

    #71902
    Profile photo of Neil@riverside
    Neil@riverside
    Participant

    From the manual – Lamp – Plug in a 4-pin gooseneck lamp to illuminate the
    mixer surface. You can use any industry standard 12V, 5W
    or lower power lamp. We recommend the Allen & Heath
    LEDLamp with built-in thumbwheel dimmer.

    #71904
    Profile photo of Bear
    Bear
    Participant

    I’ve been using a littlite led 12v on my QU24 & QU32 works fine .

    #72085
    Profile photo of nottooloud
    nottooloud
    Participant

    Unlike incandescent bulbs, LEDs care about which pin is positive. There are several standards for wiring this standard outlet, all set up before that mattered.

    Standards are useful. That’s why there are so many of them.

    11.85v is well within spec.

    #81397
    Profile photo of ri_smith2003
    ri_smith2003
    Participant

    I know this is old now. I have just purchased 2 of these lamps for the Qu32 and had the same problem.

    After speaking to Adam hall the pin configuration on these lamps is 3 ground and 4 positive.
    Where as Allan Heath is 3 + 4 12v and shell as the ground.

    Return them I shall.

    #81398
    Profile photo of Bis-Repetita
    Bis-Repetita
    Participant

    yeah, remember I’ve finished mine with switching pins too!

    #81410
    Profile photo of nottooloud
    nottooloud
    Participant

    Return them I shall.

    Depending on what kind of XLR connector, rewiring them isn’t that hard.

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