Pedals not playing nice together

[likitlikeyoulikeit]

I agree to a degree. There are much better pedals out there but these two particular ones give me sounds that I have not gotten otherwise. I read in a blog that the issue I am having is digital processing noise caused by the manufacture not putting filtering at both ends of the circuit which, yes, is why they are cheap pedals. The common thought is that the whine gets amplified by the adjoining pedals via the power. But I have tried completely isolated power supplies at the proper specs and it does not fix the issue, so I feel it leaks into the audio regardless. So yes short of re designing the pedals to include filtering, buying better quality pedals is the answer. Just a shame though, because whoever engineered these pedals had some good ideas.

I mean ..you could theoretically add a power filter circuit, to the existing circuit.

But I am not sure of your soldering skills level, and am not a good teacher over the interwebs ....but if you have good skills and understand basic pedal power circuits...you could probably fix the issue in one day, for like 1usd.

Read through this thread for more insight into what is missing from these circuits...and how to possibly fix it, by applying the same principles.

Adding a power supply filter to a DIY pedal

www.guitarscanada.com

Also, I may ask @FuzzyAce if I am pointing in the wrong direction... considering it's a digital pedal.

 

[Themoleman]

Well after lots of experimenting and fixing a few issues, it is still a digital noisy pedal, but acceptable. First I found that I was running a daisy chain on two pedals on the board. I replaced the cable with two separate cables. So now everything is on its own isolated power. Next I placed the offending Excalibur as distant from its sister mini universe as possible. Lastly I went through every power supply I own, which a box of wall warts from over thirty years. Finally the last one I tried was an extremely old RadioShack wart with switchable voltage settings and 300 mA. For whatever reason this one tamed the whining to an acceptable level. There were plenty other 9v 300 mA ones but this one did the trick. What’s left I can eq out. Next project getting all my old Boss pedals modified to run off 9v directly.

 

[Orvillain]

M-vave mini universe (reverb) and an M-Vave Elemental (delay)

To be fair, I was gonna be snobbish and say that these are cheap pedals and you should replace them with some good ones. But they sound pretty dang good in Youtube videos. It is a shame they're not buiilt to a higher quality, if it is indeed down to the filtering.

There are plenty of alternatives out there for those kinds of sounds, but not at that price.

 

[ewidance]

Hi,

Just bought (receive 11/24) and installed on an effect loop of a Marshall 3101 Anniversary tube amp. I first Powered it with a multi output unisolated power supply with other pedals, I had 2 flaws: Hiss (diital noise) and 50hz (100 hz in fact) widely amplified when i used my hi gain channel.
I used an other power supply (switching, low cost) to power mini universe separately > Hiss disapeared, but suprisingly not the 100hz...
Then i used an 'classic' power supply, based on a transformer with rectifier bridge & proper filtering (470uF) > Not anymore noise on 100 Hz.

I don't explain that for the moment, i have to do further tests. But it works.

FYI, i dismounted the pedal and saw significant rerouting on PCB and additionnal component compared to the video I saw on YT related to "pop" suppression (adding a resistor to suppress on/off bang). It appears PCB have been recently rerouted and there isn't any more "pop" noise on commutation.

I'm very satisfied with it, especially for price/value ratio even if she is capricious with power supply. I paid 24 euros for that!

Hope this will help.

 

[maguchi]

I am a big fan of inexpensive pedals and there are some great ones out there. Recently I purchased an M-vave mini universe (reverb) and an M-Vave Elemental (delay). They are both capable of some crazy sounds but refuse to play nice together. No matter where in the efx chain I put them, if they are both plugged in I get a tone, whine, whatever you want to call it. Not hum or buzz. The frequency is around 300 Hz.
D or D#. Any ideas what would cause this? I have not tried separate power supplies yet. Any suggestions would be helpful. Thanks

Tune your guitar to that tone and right some songs in that key.