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XLR Input on Trace 1048H

Discussion in 'Amps [BG]' started by jon36992002, Apr 13, 2014.


  1. jon36992002

    jon36992002

    Joined:
    Jun 7, 2012
    I picked up a vintage 1048h the other day, and I am really confused by the presence of the XLR jack on the back. Is it a pass through for an unamplified signal? Was XLR used for powered signals when this was made?
     
  2. B-string

    B-string Gold Supporting Member

    Joined:
    Nov 21, 2008
    Location:
    Lake Havasu City, Az USA
    There was a period of time XLR's were used by some for speaker cables. Thankfully speakons became the standard.
     
  3. Bass_Pounder

    Bass_Pounder

    Joined:
    Jan 19, 2002
    Location:
    Palm Coast, Florida
    Sounds like a line out for the P.A.
     
  4. B-string

    B-string Gold Supporting Member

    Joined:
    Nov 21, 2008
    Location:
    Lake Havasu City, Az USA
    Nope, they intentionally the wrong mate used for line level (a standard mic cable won't work).

    We also used to use AC mains twistlocks for high power PA. 1/4" was never a "good" connection for anything other than low level signal.
     
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  6. Bass_Pounder

    Bass_Pounder

    Joined:
    Jan 19, 2002
    Location:
    Palm Coast, Florida
    Ahhhh............

    Didn't realize it was a cab.

    Carvin did it years ago too (I had a "V" series cab).
     
  7. jon36992002

    jon36992002

    Joined:
    Jun 7, 2012
    Super weird, thanks for the help. I think I'm probably just gonna swap em out for a set of speakon jacks. The connectors are about the same size/
     
  8. B-string

    B-string Gold Supporting Member

    Joined:
    Nov 21, 2008
    Location:
    Lake Havasu City, Az USA
    First use I remember was JMI Vox back in the '60s. :)
     
  9. B-string

    B-string Gold Supporting Member

    Joined:
    Nov 21, 2008
    Location:
    Lake Havasu City, Az USA
    Excellent plan! :cool:
     
  10. BassmanPaul

    BassmanPaul Gold Supporting Member

    Joined:
    Aug 25, 2007
    Location:
    Toronto Ontario Canada
    Typically the hole is 3/4" for an XLR male as used for a DI. out. The female version, as used for a mixer mic. in, is 15/16" diameter. This is precisely the same mounting as an NL4 Speakon which is what you should use. Wire hot to +1 and cold to -1. If the cabinet has two connectors, replace both and jumper +1 >> +1, -1 >> -1, +2 >> +2 and -2 >> -2. linking the second pair will allow for a pass through in a bi-amp system.
     

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