Attenuator for Orange AD30 TC

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by hlucaszoso, Jul 15, 2005.


  1. hlucaszoso

    hlucaszoso Guest

    Any assistance in this matter is greatly appreciated. I have an English-made Orange AD30 TC which is in need of an attenuator. I have researched and found perhaps a THD hot plate however, I am not sure what Ohm model I need for the amp.

    The amp contains two 8 Ohm Celestion G12 speakers with patch bays for 16 Ohm and 8 Ohm settings.

    Perhaps a dumb question but, I really need any assistance with this matter and maybe suggestions on attenuator brands/types.

    Regards

    H
     
  2. flicker180

    flicker180 Member

    Messages:
    778
    Joined:
    Mar 26, 2005
    Location:
    Holden, MA
    is this a combo or a head/cab?

    From what you're describing, it sounds like you have 2 x 12" 8ohm speakers....are they wired in series or parallel? if in series, your load is 4 ohms. if in parallel, i believe the rating is 8 ohms still.

    dave
     
  3. hlucaszoso

    hlucaszoso Guest

    I it is a combo - head is built into the cab
    The speakers are wired to one lead speaker cable which terminates into a 1/4" plug
     
  4. flicker180

    flicker180 Member

    Messages:
    778
    Joined:
    Mar 26, 2005
    Location:
    Holden, MA
    does the speaker wiring look similar to these two?

    speaker output --> speaker #1 --> speaker #2

    vs.

    speaker output --> speaker #1
    --> speaker #2

    the amp only looks like it has 8 or 16 ohm taps so.........i'd hazard to say that an 8 ohm attenuator would prolly be correct..

    dave
     
  5. Andy H.

    Andy H. Member

    Messages:
    83
    Joined:
    Nov 8, 2004
    Location:
    Amsterdam, Netherlands
    The two 8 ohm internal speakers on the AD30 are normally* wired in series for 16 ohms. If they were wired in parallel that would give 4 ohms, but there is no 4 ohm tap on the amp of course...!

    (*A few AD30 combos were also put out with two 16 ohm drivers wired in parallel for 8 ohms total, which wasn't so clever as you can't then use an extension cab in addition to the internal speakers... If anyone has one of those then they can contact Orange directly for an at cost replacement deal. See the last but one post on this page:
    http://www.orangeamps.com/forum/topic.asp?TOPIC_ID=1266&whichpage=6)

    flicker180, no offense but you might want to sort out impedance matters in your head before posting advice on the subject. This is a good guide:
    http://ebassist.com/vb3/showthread.php?t=11117

    Andy.
     

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