Loudspeakers, no sound from left Midrange?

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#61
Galu said:
Blue wire goes to terminal 1.
Orange wire goes to terminal 3
Sky blue wire goes to terminal 2 (the centre terminal)

To bypass the L pad control, you would:

  1. Disconnect the blue wire from terminal 1 (and insulate its bare end).
  2. Leave the orange and sky blue wires in place, but connect a jumper (shorting) wire between terminal 3 and terminal 2.
You will be left with no attenuation i.e. the midrange will be at its loudest setting.
Click to expand...




Thanks to everyone.


Sorry for disappearing.
Time spent with elderly parent.


Galu, I think you may have answered the issue.


I took a photo before removing the wires from the L pad.


The blue wire was on an outer terminal.


I'll reassemble with as per your list and re test (tomorrow).
Now 1.32am and way past my bedtime.


Will report back.


C
 
#63
I wanted to thank everyone for the great assistance.
I'm blown away by the great community here.
Great knowledge base and willingness to help.


To summarize I have now insulated one of the L Pad Attenuator wires which had a missing terminal boot. This may have contributed to the Midrange problem if it was shorting on the metal frame.


And since our last posts, I removed the L Pad in question, and carefully brightened up the terminals with 800 grit paper. I also twisted the Attenuator dial several times to overcome any possible corrosion in its internals.


After re assembly the Midrange is now fully functional.
I used old drivers I had lying around for purposes of a sound test to avoid the possibility of driver damage to the originals.


Thumbs up to all who helped.


cheers


Cliff 🙂
 
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