Home › Forums › Help/Technical Questions › B9 organ pedal –> annoying hum when placed in rig

Viewing 8 posts - 1 through 8 (of 8 total)
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  • September 19, 2014 at 8:06 am #83645
    robinrobin
    Member

    Hello,

    Is anyone having humming issues with the B9 pedal? When I use it solely I get no hum. But from the moment I put it into my rig (ocatvia-wah way- fuzz- delay – reverb- tremolo) I get this terrible hum, especially when I put a jack to my other amp from the dry output. I have tried numerous options regarding the position of the pedal in the rig but it doesn’t do anything about it.

    Is this a known issue? Any tips? Or should I think about sending it back for a check-up?

    I really like the pedal, it is already a part of my sound, but I can’t go using it live with a hum like that tearing it up. The hum doesn’t even stop when I stomp my tuner which has true bypass.

    Thanks for the help in advance!

    Regards
    Robin

    September 30, 2014 at 6:16 pm #120264
    telepicker
    Member

    Yes it almost like a high pitched oscillation from the pedal it’s self. I unplugged the cables and still can here it when a patch chord is close to the B9 effect. This really is not cool – the B9 must be able to play nice with other pedals on the board.

    October 14, 2014 at 10:06 pm #120300
    billy12086
    Participant

    Did anyone figure out how to get rid of that tone it makes when you plug it into other pedals?

    October 15, 2014 at 6:53 pm #120301
    billy12086
    Participant

    I figured it out, when you use the B9 with other pedals you have to use the power supply that came with it. As soon as you swap it out for pedal power like on your pedal board the hum starts. Make sure it is connected to its own supplied power supply and the hum goes away. Good luck…

    January 6, 2015 at 6:19 am #120458
    Caevan OShite
    Participant
    Quote:
    I figured it out, when you use the B9 with other pedals you have to use the power supply that came with it. As soon as you swap it out for pedal power like on your pedal board the hum starts. Make sure it is connected to its own supplied power supply and the hum goes away. Good luck…

    I’ve found that the B9 doesn’t like to share voltage on a daisy-chained power-supply such as a Visual Sound 1 Spot; that very annoying, very noticeable constant high, droning, whining noise can result. You can simply power it with its provided power-supply, or virtually any current-capable separate 9vdc center-negative power-supply, or an isolated 9v supply such as those of the Voodoo Lab Pedal Power line of power supplies. You can still use a daisy-chained PS on other pedals connected to the B9 in your signal chain; just power the B9 with its own separate or isolated PS and you should be fine.

    My Strymon pedals also need either their own individual power-supplies, or that of a good PS like a Voodoo Lab Pedal Power unit; they exhibit some odd electronic ‘hash’ in the background if powered on a daisy-chain.

    I use a few of these short extension-chords, that light up with internal LED’s, to save space on my outlet-box; they’re great for wall-wart power-supplies…

    411elpSDIVL.jpg

    July 9, 2015 at 3:44 am #120770
    gennation
    Member

    I found this high pitch hum/buzz too. I have a supa-charger and joyo 2 power supply. This is part of my chain: B9 -> C9 -> Micro POG.

    The pitch has to do with grounding. I think the Supa is more “isolated” than the joyo. When I have my C9 and Micro POG in the Supa and the B9 in the Joyo, I have the hum. Since I have the three devices and only two 200mA sources per device I had to test with a process of elimination puzzle. This is what I found…

    If I have the B9 and C9 in the same supply and the POG in the other (doesn’t matter which), the hum is gone unless I touch the metal cable casings of the B9 output and C9 input together, then it’s back. Very strange. Since the combination I have doesn’t allow all three 200mA devices into one supply I can’t really test further.

    I’ve resorted to running the C9 and POG off one of the supplies and the B9 off the provided power supply/wallwart from the wall. Since the B9 seems to be part of the issue this seemed to make more sense.

    This makes me think that if I cut the ground on the cable from the output of the B9 to the input of the C9 that I’d probably be golden as far as those pedals, but then I’m sure I’d run into a mess with all the other pedals I have after them that are across the two supplies.

    Yeah, hornets nest.

    I might try eliminating the joyo and going with a second Supa Charger to see if two higher quality sources makes a difference, but I don’t have that option right now.

    The reason I think it’s the supply and and isolation is the Supe is regular 120v with a C13 type cable and the Joyo is a wallwart canon type in. The Supa seems to be more grounded and AC than the Joyo. IOW, the joyo might have a single input transformer before it hits the individual output transformers. The Supa might be more isolated on the input as well as the output. Just a thought.

    Hope that all made sense.

    August 25, 2015 at 2:41 pm #120866
    guitarnowski
    Member

    Hi there, I was noticing the same thing with my B9. Anybody progress made ?

    August 25, 2015 at 3:19 pm #120867
    gennation
    Member

    I noticed moving things around on my power supply’s helped. I have it running off the Joyo PS2 on a 9v 500ma port. Seems to be doing fine. I think it has to be the higher amperage that made the difference, although my C9 and MircoPOG are running on the 100ma ports just fine and they use the same EHX supply the B9 came with.

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