Electrix MoFX guitar interface

[Dave Eason]

Hi Guys,

I wonder if anyone has any ideas for this:  I have a MoFX by Electrix (http://www.electrixpro.com/), but it is essentially aimed at studio use and live use with mixers and DJ style equipment.  It has balanced 1/4" TRS stereo inputs, that accept nominal +4 dBu line level inputs, at 66 kOhm, and the outputs are also balanced line level outputs at +4dBu nominal level, with an impedance of 450 Ohm.

I plug the guitar stright through it at the moment, but due to the line level type i/o its very noisy and not ideal, good for playing around with but not pro use yet.  I was wondering what the best way would be to match the guitar to the input and the output to other FX/amplifers.

I essentially need to boost the guitar to line level and impedance and balance, and reduce the output and try to match the impedance to amp/fx inputs, to try to reduce noise and improve performance.

Any ideas would be fantastic.  It's a great bit pf kit, I picked up ex-demo for £99, and it has a great useable delay and tremolo in it.

Dave

[Hardtailed]

I guess that, ideally, this would be run in the FX loop of your amp (usually made for line level effects).

[Dave Eason]

But would a guitar pre amp output and power amp input be correct?  It still seems relatively noisy, and of course those connections are unbalanced.  Will a DI balance the pre amp output?

Dave

[RaceDriver205]

What on earth is 'balanced'?

[Dave Eason]

balancing a line is just a way of reducing noise; great anderton wrote some articles on the topic.  XLR and TRS jacks are examples of balanced lines.  It uses a thing called common mode rejection; essentially there is a + and - connection carrying the signal in and out of phase and a screen/ground.  It basically isolates the ground from the signal completely, and any "common" noise getting picked up along the cable (where is acts like an antenna) arrives along the + and - at the same time to either the balancing transformer or other electronic circuit where the in and out of phase noise signal are combined and they are canceled out.  Simple and effective! All pro mic and mixer outputs are generallyt balanced.

http://en.wikipedia.org/wiki/Balanced_line