Nord User Forum

On my piano 2 HP there seems to be an unusual problem with my headphone jack that hopefully someone can help me with. I can hear acoustic pianos fine but when selecting an electric piano I can only hear what sounds like the reverb tail through the headphones. If I switch the reverb off I hear nothing. Thanks in advance!

Are you perhaps using 1/8" headphone jack with adapter? Your headphone connection is shorting L and R channels together, resulting in phase cancellation. What you are (not) hearing is physics in action -- parallel mono feeds which are 180 degrees out of phase and therefore canceling. Turning reverb on salvages some portion of signal, allowing you to hear something.

Thanks, good point. My adapter has a tip ring sleeve arrangement designed for unbalanced stereo but I will test to see whether the tip and ring are shorted.

Unfortunately it is not my adaptor. I agree that the problem is most likely due to the left and right channel from the headphone amplifier being shorted but this must be happening inside the keyboard.

Sustain pedal jacks are notorious for being damaged as a result of someone having stepped on the cable. Perhaps there is something amiss inside your headphone jack. This will probably not be determined without visual confirmation. If I were you, I'd test this with a "standard" 1/4" headphone before paying someone to open up your instrument...

Please let us know how this works out in the end.

Bless,

Pablo