Question about Phonic Helix18fw 18 Channel Mixer with Firewire

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Phonic Helix Board sound problems

I recently bought a 24 channel phonic helix board. Although the board is picking up the signals from the installed microphones, when I plug in the speakers through the main output nothing comes out. It's only when I plug into the control room output that some sound can be heard but it is very quiet and distorted. How can this be solved? A step by step set up guide would be useful as the instructions are pretty useless

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  • kev white
    kev white May 07, 2014

    Hi Barker, I'm having the same sort of problem but it's the ctrl room outs that has little signal but the main outs are fine. Did you get a solution to your problem? I'm thinking it might be a loose ribbon cable inside?

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You don't specify which model Phonic mixer in question.
Is it a powered mixer ? And are you plugging your speakers into the speaker outputs ? If it's not a powered mixer and you're plugging speakers into the Line Outputs, you're not using a power amplifier between the line outputs and your speakers - this won't work.
If it is a powered mixer and you are plugging speakers into the speaker output connectors and still getting little or no sound, check your speaker cables and the speakers themselves by plugging them into known good amps.

Posted on Aug 01, 2009

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Posted on Jan 02, 2017

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Operations manual


Here is a link to your manual, hope it helps.
http://www.phonic.com/en/helix-board-18-firewire-mkii.html

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My power supply in my phonic helix mkII 24 board is blown, it was messed up in a power surge, I have tested the remaining connecting parts and everything else is fine. I contacted phonic and they dont...


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I get a distorted sound from my speakers throug a Phonic Helix Board. It is connected on a PC through Fire Wire. The distortion is also there while using microphones or other inputs (CD-players etc.). It...


Hallo landgenoot ;)

It seems it is a power supply problem; distorted sound, no meters, solo buttons not working, headphones low level and distorted. One of the power supply voltages might be too low or even missing. The Helix series mixers use mainly 4 supply voltages: + 15 V and - 15 V for the analog part (audio), + 5 V for the DSP and logic and +48 V only for the phantom power. If for example the + or - 15 V is too low, clipping of the positive or negative parts of the waveform (dependng on which voltage is too low) will occur. If possible, first measure the voltages coming out of the power supply. You could use a metal part of a jack as ground reference.
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Groeten, Frank.

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I have a Phonic Helix Board 24 firewire MK2 When i open it all the peak led stays open I think the power suply is busted I need an expert


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