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Anonymous Posted on Jul 24, 2012

Major problems with MXR EVH 117 Flanger Pedal

Makes a high pitched siren sound.

3 Related Answers

larry james

Larry Stiles

  • 301 Answers
  • Posted on Jul 17, 2009

SOURCE: The correct order for Effects pedals.

Input guitar into the tuner then whammy type effects last into distortion effects then to the amp input.

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geoffjunkste

  • 41 Answers
  • Posted on Feb 28, 2011

SOURCE: I have the MXR EVH

The fact that it happens with 2 different units may point to something in common. You just first eleminate the cables as a possibility by swapping. Also, most pedal problems can be traced to a battery issue, so make sure it is a good one. Make sure you are using mono, not stereo cables.

The footswitch could be faulty, try holding it in different ways to see if it makes contact.

Fred Yearian

  • 5603 Answers
  • Posted on Oct 19, 2011

SOURCE: Our Yamaha YDP223 has an issue with the damper

All sound is generated digitally and the pedal doesn't modify the sound, it just sustains the generator. This is a strange problem and best suggestion iis to find another unit and compare... it may be a characteristic of the design. There isn't anything that you can do to change this. It could be there is a bad ground inside the unit or the digital data is corrupt in the processor. The fact that it is on a particular set of notes is strange...I just checked on my Yamaha piano that is essentially the same electronics and I notice that on one octave above the middle when one strikes F# and G they "ring out". Now this MIGHT be due to the characteristics of the speakers. Those particular notes seem to clash more. I don't have other speakers on mine and unfortunately you did not mention what brand model you have attached. Consumer grade speakers like fancy stereo speakers do NOT do well on these instruments. One has touse pro grade speakers AND use proper interconnecting cables. The speakers, powered type, must be powered from the SAME receptacle as the piano to avoid ground loops.

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Related Questions:

0helpful
1answer

MXR phase 90 swtiches on but I have no phasing

I would check the difference in sound between using an AC adapter and a battery. These things lose the effect when the batteries get low.
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I just bought an MXR Phase 90 and i do not have the right 9v cable to plug in to the wall. So i just bought a duracell 9v battery and pluged it in. When the pedal is bypassed i can hear the gutair through...

The battery is being shorted by something. It is impossible for me to guess what without looking at it. If the pedal is brand new, take it back for warranty repair/replacement. If you bought it from somebody, you bought THEIR problem... they likely knew about it. If this is the case, look for a pinched wire from the battery lead... make sure it is not backward. If you can't see anything and cannot get a refund, open the pedal. Look for a problem where the 9 volt adapter plugss in. Broken jack, etc. Look for evidence that somebody has taampered with the insides. Of course look for foreign debris.
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Hi there, i got a 5150 half stack amp and the evh wah pedal, my problem is when i engage the pedal comes a terrible hum, i already change the cables, 9v battery and the ac adapter and the big noise...

WHY are you using a battery AND a 9 Volt adapter? This is an either/or thing. Chances are you have a defective ground someplace. Use just the battery and try it... If the hum is gone, the adapter is NOT compatible with the pedal. A lot of hum problems occur because the guitar is near a source of magnetic fields, such as an amp. An embarassing thing is for a musician to reverse the in and out connections to the pedal... it will have the symptoms you have mentioned.
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I have the MXR EVH Phase 90. When plugged in, and unit is off my sound is fine. When unit is activated, the light comes on but there is no sound. The same thing is going on with my Maxon AD999 Delay pedal....

The fact that it happens with 2 different units may point to something in common. You just first eleminate the cables as a possibility by swapping. Also, most pedal problems can be traced to a battery issue, so make sure it is a good one. Make sure you are using mono, not stereo cables.

The footswitch could be faulty, try holding it in different ways to see if it makes contact.
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MY MXR STEREO CHORUS LED LIGHT START TO FADE AFTER CONNECT WITH DC BRICK! DOES THIS MEAN MY PEDAL WILL HAVING ANY DEFECT?

I don't know what you mean by "DC Brick"...

The MXR Stereo Chorus unit requires a special 18 Volt power adapter. The common 9 volt pedal power adapters will NOT work with this device. If you have batteries in the unit, when you plug in an incorrect adapter, the unit disconnects from the batteries and the caps discharge so the light will fade.

You will need to use: ECB-004 18-volt AC Adapter Best to use the manufacture's exact device for this one.
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MXR Phase 90 doesn't phase only clean signal. The oscillator is working and I have changed the BJT's.

sounds like a switch contact problem, try some surgical alcohol. (for the MXR not for you!!!)
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5answers

The correct order for Effects pedals.

Personally, I like to have all "tone effects", such as wahs, distortions and equalizers in front of "time effects" such as phasers, chorus, flangers and delays. See my set up in the photo. Guitar input is from right to left, starting with the wah pedal.
Tom, 30yr player


correct-order-effects-pedals-2ckjipyran2c0uimcnrpjion-1-0.jpg
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