Jump to content

HX Effects: Loud hum on distortion/overdrive patches...


Recommended Posts

I've been using my HX Effects live quite a bit and love it.   The modulation and delay effects are pristine.  No noise and they just do what they are supposed to.  The distortion/overdrive patches have a huge 60 cycle hum.   I had a similar problem on the same board with my old M5, but it wasn't quite as loud.   Before I jump into the great ground loop rabbit hole, could the placement on my board be the issue?  Here's how it's set up:


Dunlop volume pedal > Vox Wah > Xotic BB+ > Vertex UltraPhonix > HX Effects > to amp


Could that chain cause the problem?


Right now, I use it a lot with a TrueTone OneSpot power supply.  I've tried reversing polarity (unplug & replug swapped 180) and it doesn't help.  I have heard, recently, an Ebtech hum eliminator will help, but have yet to try that.  I also have a PedalSnake set up to run it when I have the time to set that up.  The power supply is similar, but from another manufacturer.  I use the same power supply from my rack thru the PedalSnake.  Same issues.   Overdrive & distortion patches have hum... nothing else does.  I have not modified the output volumes, so they are as when it came out of the box.  


Thanks in advance.

Link to comment
Share on other sites

Just had some time to set things up and play with the rig.  Ran the above routing into my Dr. Z MAZ-38 2X10.  The amp makes no difference.  I have a Blues Jr. and a Line 6 AX2 (Matchless patch) and they both do the same thing.


  I get a slight noise when no effects are active that throbs in time with the tap tempo light.  Still have a lot of noise/hum on the overdrive/distortion patches.  I reversed the polarity of the power supply; no change.  I have an Ebtec Hum Eliminator and put that between the pedal board and the amp; no change.  So, I am beginning to think it has to be the way I have the signal path routed.


Dunlop volume pedal > Vox Wah > Xotic BB+ > Vertex UltraPhonix > HX Effects > to amp


I'm old and new to this thing, so I'm sure there is some magic in there I haven't figured out yet.  If the placement in the path above is causing this, then where should I put it?  1st in the path?  Will do some more playing an report back if I figure it out.  Thanx in advance for any ideas.



Edited by Ludie
Add clarity about amps used.
Link to comment
Share on other sites

  • 2 months later...

I must be a stupid old man...   no one has replied..  


I had a thought...  I'm using a One Spot power supply to power the pedal board the HX Effects is on.   I hated the power supply that came with the HX Effects.  Who came up with that design?   I am going to test using the original and see if the problem goes away.   If that doesn't work, I will attempt to add a static noise gate on each distortion/overdrive patch.  Hopefully this stupid old man isn't the only one that is having this problem.

Link to comment
Share on other sites

  • 3 weeks later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...