I have a problem with my Motif XF6.

It seems like my main outputs are slightly panned, the right output is a few db higher than the Left.

The headphone output however is perfectly centred.

The sound is ok, but I have to compensate this on the mixer during live gigs. I’ve tried to make a factory reset just in case. It didn’t help.

Any suggestions?

//PJ

First let’s verify that the problem is in the XF6…

Swap the plug connections at the L/MONO and R main output jacks.
Is the level at the right speaker still higher than the left,
or is the left speaker level now higher than the right?

Thanks for your answer.

Yes I have verified that the problem is in the motif, the speaker connected to the L / Mono output is always lower.

Could it be caused by a dirty 1/4” socket (oxidation perhaps).

Is there any way to assign the assignable socket to work as a regular main output for troubleshooting?

Per_J - 17 May 2015 12:35 PM

Thanks for your answer.

You’re welcome.

 

Per_J -

Yes I have verified that the problem is in the motif, the speaker connected to the L / Mono output is always lower.

Could it be caused by a dirty 1/4” socket (oxidation perhaps).

While that’s a possible cause, it’s unlikely. You could try removing and reinserting the plug, rotating it, wiping it with a clean cloth, etc.
 

Per_J -

Is there any way to assign the assignable socket to work as a regular main output for troubleshooting?

You can assign Parts of Performances or Pattern/Song Mixings to those outputs. For a Performance, see Output Select on pages 110-111 of the XF Reference Manual. Note that the System Effects won’t be applied to Parts routed to the ASSIGNABLE outputs.

Very few components can cause low level on one channel main output while the PHONES level isn’t affected. I’ve posted about leaky muting transistors several times. There are some simple external tests to check for that possibility. Do you have access to a DC voltmeter?

Thank you again for great answers, sure i have a multimeter. I will try to search the forum for your post regarding leaky muting transistors.

Per_J - 17 May 2015 05:40 PM

Thank you again for great answers, sure i have a multimeter. I will try to search the forum for your post regarding leaky muting transistors.

You could find my previous posts, or I could post links to them, but here’s what to do…

Plug a TS cable into each of the main line outputs, L/MONO and R.
Set the MASTER VOLUME control slider all the way down.
Turn on the Motif.

Measure the DC voltage between Tip and Sleeve at the unconnected end of each cable. The voltage should be very low, certainly under 0.1 volt (100 millivolts) - anything over typically indicates a leaky muting transistor.

Let us know what reading you get.

5pinDIN - 17 May 2015 05:52 PM

You could find my previous posts, or I could post links to them, but here’s what to do…

Plug a TS cable into each of the main line outputs, L/MONO and R.
Set the MASTER VOLUME control slider all the way down.
Turn on the Motif.

Measure the DC voltage between Tip and Sleeve at the unconnected end of each cable. The voltage should be very low, certainly under 0.1 volt (100 millivolts) - anything over typically indicates a leaky muting transistor.

Let us know what reading you get.

It seems to be a leakage on the left channel, I’ve measured 0,19 V. On the right channel I measured 0,00 V.

I also find an old thread that describes a similar problem here
http://www.motifator.com/index.php/forum/viewthread/471643/

Maybe it could be the muting transistor or a capacitor; anyway I will contact my local repair shop tomorrow.

Thank you so much for our help.
//Per

Per_J - 20 May 2015 03:41 PM

It seems to be a leakage on the left channel, I’ve measured 0,19 V. On the right channel I measured 0,00 V.

I also find an old thread that describes a similar problem here
http://www.motifator.com/index.php/forum/viewthread/471643/

Maybe it could be the muting transistor or a capacitor; anyway I will contact my local repair shop tomorrow.

DC leakage along with lowered level is typical of a bad muting transistor. If needed, 2SC3326 surface-mount transistors should be replaced with originals if available - if not, the only equivalent I’m aware of is the KTC2875.

 

Per_J -

Thank you so much for our help.
//Per

You’re welcome. I hope the repair goes well.