Dream '65 hum at <25% volume

jdgjdg

Member
Am I doing something wrong, or is there a very noticeable hum on this at low volume settings? I am using a Cioks Sol to power it, although I have tried others, switching supplies, transformers etc. No other pedals in the signal chain, just an OBNE Split Meld to take the outputs to TRS. Then directly into a Quad 33/303 hifi. The hum is only present on the first 25% of the volume pot. Driving me crazy. I love the sound/feel of the pedal. I tried everything, this would be the best, but I need to stop this hum. Anyone have the same experience and a fix? Thanks!
 

Dom85

New Member
Am I doing something wrong, or is there a very noticeable hum on this at low volume settings? I am using a Cioks Sol to power it, although I have tried others, switching supplies, transformers etc. No other pedals in the signal chain, just an OBNE Split Meld to take the outputs to TRS. Then directly into a Quad 33/303 hifi. The hum is only present on the first 25% of the volume pot. Driving me crazy. I love the sound/feel of the pedal. I tried everything, this would be the best, but I need to stop this hum. Anyone have the same experience and a fix? Thanks!
It is like that!
Same with mine, even got a replacement after sending it in. Same problem. It goes away the higher you turn up the volume.
I tried many different power supplies and cablings. Even with a Boss 9v supply directly into the interface, the low frequency hum is there. It’s around 60 Hz. It’s as present with single coils as it is with humbuckers, doesn’t matter.
Maybe someone from UA can shed some light?
 

Doug Byf

Member
Yours might be faulty. Mine is perfectly silent run as you said, and that is with or without Boss DD-500 and Ox Stomp.
Powered by Voodoo Labs 2Plus.

Just a thought have you tried plugging it in to different wall sockets?

Good luck solving the problem.
 
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Dom85

New Member
I don’t get it.
I got a replacement unit and the problem persists. Tried various configurations, I don’t even have to connect a guitar to it.
 

d0gmA

Active Member
It is like that!
Same with mine, even got a replacement after sending it in. Same problem. It goes away the higher you turn up the volume.
I tried many different power supplies and cablings. Even with a Boss 9v supply directly into the interface, the low frequency hum is there. It’s around 60 Hz. It’s as present with single coils as it is with humbuckers, doesn’t matter.
Maybe someone from UA can shed some light?
tell us more about this boss 9v adapter ? Which one is it ? Have you tried it with other 9v 500ma + adapters ?
 

jdgjdg

Member
My friend has one and it does exaxctly the same in his rig. I am using a Cioks Sol, but have tried other power and guitars. I really do not know what is wrong.
 

d0gmA

Active Member
I can recreate this if I set the volume 0-3 and output to 10 and crank my monitors way up. Is that really a realistic use case ? When vol set to 2 and output set to 7 you can't even hear the hum and guitar is plenty loud. Try turning down your output.
 
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klasaine

Hall of Fame Member
The Cioks “Sol“ is a ‘switch mode’ power supply.
Any switch mode pwr sply can potentially induce noise with some devices, especially those devices that require a big power draw that needs to be consistent regardless of how many mA they deliver.
Try the Dream65 with a Boss PSA 120 S (linear power).
 
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d0gmA

Active Member
You still gotta be pumping up the volume after it pretty hard to hear the hum at that setting
 

jdgjdg

Member
The Cioks “Sol“ is a ‘switch mode’ power supply.
Any switch mode pwr sply can potentially induce noise with some devices, especially those devices that require a big power draw that needs to be consistent regardless of how many mA they deliver.
Try the Dream65 with a Boss PSA 120 S (linear power).
OK, thanks. I will give it a go.

UA do say this on the UAFX site though.

Any modern high-current pedal board power supply that meets the requirements below will work with UAFX pedals. Manufacturers such as Voodoo Lab, Cioks, Truetone, and Strymon make power supplies that work great with UAFX pedals.
 

jdgjdg

Member
You still gotta be pumping up the volume after it pretty hard to hear the hum at that setting
Not in my case. It might be the preamp in my hifi. It is worth noting that I also have a Woodrow that is super quiet in the same set up.
 

klasaine

Hall of Fame Member
OK, thanks. I will give it a go.

UA do say this on the UAFX site though.

Any modern high-current pedal board power supply that meets the requirements below will work with UAFX pedals. Manufacturers such as Voodoo Lab, Cioks, Truetone, and Strymon make power supplies that work great with UAFX pedals.
Yes, they mention Cioks but not the 'Sol' specifically which, reading the literature carefully, indicates that its "switching" type is different than Cioks other offerings. I'm not saying that it definitely is the issue, I'm just saying that it's possible.
 

Shawn1234

Member
It is like that!
Same with mine, even got a replacement after sending it in. Same problem. It goes away the higher you turn up the volume.
I tried many different power supplies and cablings. Even with a Boss 9v supply directly into the interface, the low frequency hum is there. It’s around 60 Hz. It’s as present with single coils as it is with humbuckers, doesn’t matter.
Maybe someone from UA can shed some light?
I’m trying to figure out why there’s a 60 Hz hum using a battery, are the instrument cables running near / parallel to any power cables? Or near any LED or fluorescent light fixtures? Cables in good working order? No grounding issues on the amp itself?
 

jdgjdg

Member
Yes, they mention Cioks but not the 'Sol' specifically which, reading the literature carefully, indicates that its "switching" type is different than Cioks other offerings. I'm not saying that it definitely is the issue, I'm just saying that it's possible.
I just ordered the Boss supply you suggest. I will report back!
 

jdgjdg

Member
I’m trying to figure out why there’s a 60 Hz hum using a battery, are the instrument cables running near / parallel to any power cables? Or near any LED or fluorescent light fixtures? Cables in good working order? No grounding issues on the amp itself?
It might be. The friend I recommended the Dream to has an original and was A/Bing them blind. He called the dream as the original because he heard the hum! It sounds great, I am not crapping on it. I just want to figure out if I can stop the hum.
 

klasaine

Hall of Fame Member
Out of curiosity I tested my Dream65 today.
In my studio it's powered by the Boss PSA 120 S. Even with a mic pre engaged, I did not get any hum when the volume on the Dream was set below 25%.
 
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