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Re: airFX level mismatch.



Gah! I've been trying to research my way into understanding impedance better for a month now. Let's just say the scales have not yet fallen from my eyes. Love to see if Andy can work some educational magic :) Great to know even giants like Rick have the occasional blind spot :)

Also, re: EDP levels... I have much empathy for the caller... that unit definitely behaves differently than all my other (more modern) gear, and I've twisted myself into knots getting it to comply in various contexts, here are just a few: 

in FX loop (serial) of Mesa Boogie MkIV
- Output far too weak. Solution was to use a Suhr Minimix 2 to boost (and to convert the serial loop to parallel).

in FX loop after Rane SM26 line splitter/mixer
Somehow this worked better, no need for boost unit, and the Rane created the parallelism I craved. Sound fidelity was good... but I wanted to move to full-frequency monitor setup, so...

No hardware amp, routing EDP thru MOTU interface to Ableton and monitors
Have found *no* way to get levels (impedance? lol) to work this way at all. Line noise, white floor noise, brittle distortion, horrible fidelity... this with levels in the EDP set entirely properly... tried every kind of cable and routing and +4/-10/inst.level combo the MOTU will allow...

Current solution?
Echoloop VST. (Bless you Matthias and crew) Works perfectly right away, sounds great, zero noise. Downside - cannot use it 'headless,' that is, without my computer running...

Always fun, never boring !

Phil :)




On Dec 3, 2011, at 11:09 AM, Rick Walker wrote:

On 7/22/64 11:59 AM, andy butler wrote:
The "instrument level" isn't really about level, it's
about impedance.
I've never truly understood the concept of impedance.

Is hi to low z part of this concept?

Would you mind taking the time to give us a simple couple of examples of
how impedance works and how it manifests in the practical world of live audio?

No worries if you are too busy.

rick