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GK MB200 Aux input


Beer of the Bass
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I have a potential new project on the go which is going to involve alternating between double bass and electric bass. For double bass, I'm happy with the sound of my pickup straight into my GK MB200, so that side of things is straightforward. I'm trying to figure out the most elegant way to bring in the electric bass without either having to adjust the amp EQ each time I swap or spending large amounts on gear.
Has anyone tried using a preamp pedal with an adapter cable into the 1/8" Aux in socket on the GK? The manual does not give any info on what signal level is required by the Aux input, so it's hard to tell whether that would be effective and would achieve sufficient output.
I was thinking that the double bass could go straight into the GK and go into the PA using the GK's balanced output set to pre-eq. The electric bass could go through a preamp pedal (I have a ROG Flipster pedal at the moment, and I'm considering trying the Ginger, their improved version) followed by my BSS DI box going to the PA and a 1/4" to 1/8" cable into the Aux input. I would probably have to make up a suitable cable, but that wouldn't be hard. The Aux input comes after the EQ and volume controls on the GK, so the double bass would be controlled by the GK's controls and the electric bass solely by the preamp pedal. The downside of this would be the lack of independent control of amp volume and line output on the electric bass.
Is there a more sensible way of doing this that I haven't thought of, or is this scheme worth a shot?

Edited by Beer of the Bass
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[quote name='Musashimonkey' timestamp='1450306527' post='2931631']
If you've already got a pre amp shaping the electric bass, then just a cheap and simple a-b foot switch with dual inputs and single line out should be ideal for your needs. (If I understand the question that is!). I'm sure I've seen these go for £10 before...
[/quote]

The only issue there would be that I couldn't tweak the EQ of the double bass without affecting the electric bass, and it sometimes needs that. Though perhaps I could make up a little pedalboard where the electric bass goes through the Flipster, double bass goes through a Boss EQ or similar, followed by an A/B box. That would be a bit more flexible if I needed to use it with a borrowed amp sometime too.

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Or... Some of the pedals suggested cost the same as another MB200! You could get another amp and either:

- Get a custom switching device or put a passive A/B switch on both the input and output
- Connect the line out / XLR of amp B to the aux in (or fx loop in if it has one?) amp A, effectively using it as a preamp.

That way you also have a a backup amp and the option to run two together if you find yourself needing more volume!

Edited by dannybuoy
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