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DHA VT1 EQ - loud buzz in DI sound


JimBobTTD
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Hello

My DHA pedal has a terrible buzz when using the DI. It only affects the DI signal - the standard signal is fine. I have tried it with no signal going in, with different XLR cables, via a power strip or direct and the noise is still there. I do not have another 12v DC power unit to try, though.

I think - [i]think[/i] - that this is a new development but I am unsure. I have used the DI many times before without there being a problem at rehearsals, but it is possible that the noise level was not high enough to have been a problem when playing in that environment or, even, that there was a noise gate in place that cut out the buzzing when not playing.

Has anyone here experienced something similar? I am not overly keen on pointing the finger at the power supply as it works fine when not using the DI. The headphone out has always been noisy. Oddly, fiddling with the headphone volume (headphones not connected) affects the sound too. I'm starting to wonder whether this is a bit of a lemon!

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  • 3 weeks later...

[quote name='JimBobTTD' timestamp='1437738834' post='2828664']
Hello

My DHA pedal has a terrible buzz when using the DI. It only affects the DI signal - the standard signal is fine. I have tried it with no signal going in, with different XLR cables, via a power strip or direct and the noise is still there. I do not have another 12v DC power unit to try, though.

I think - [i]think[/i] - that this is a new development but I am unsure. I have used the DI many times before without there being a problem at rehearsals, but it is possible that the noise level was not high enough to have been a problem when playing in that environment or, even, that there was a noise gate in place that cut out the buzzing when not playing.

Has anyone here experienced something similar? I am not overly keen on pointing the finger at the power supply as it works fine when not using the DI. The headphone out has always been noisy. Oddly, fiddling with the headphone volume (headphones not connected) affects the sound too. I'm starting to wonder whether this is a bit of a lemon!
[/quote]
Does the line out do the same thing? if so then is a power supply problem. If it just the Di that hums then I expect its a fault in the Di board or a damaged cable.

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