clintrubber said:
Interesting to hear about the Edison. Curious, how do you know its reading is inaccurate?
What are you using as your 'trusted reference' ?
The two Edisons I have show different readings, indeed does give me that the feeling that they're
then most likely both off, but IIRC there's an internal adjustment, maybe it's just a matter
of calibration.
Hi,
how do I know its reading is inaccurate? Well, let's say I don't really know whether its accurate
I noticed that, when my unit is in idle mode (meaning there is no audio going into it and no cables are connected), the phase meter sometimes wanders off the center, lighting up the first green or first red LED ??? Same problem if cables are connected. Unfortunately, this looks like a more fundamental problem than just calibaration. There are "only" five red LEDs to tell me when audio is not mono-compatible, so I consider this offset to be severe.
Anyway, I quickly fiddled around with the trim pot while sending sine waves at different freqs and at near unity gain into it. I wasn't really keen on looking into the circuitry more deeply at that time, so I didn't even bother measuring the associated meter circuitry. The gist of it: my unit calls for more attention; meaning, more time
My opinion about the Edison:
- PHASE METER: Provided the unit is otherwise OK (unlike mine, apparently), I guess anyone looking for a cheap phase meter that gives a
rough idea of how mono or stereo a signal is, could use the Edison. That's why I picked it up in the first place -- and it was darn cheap. Personally, however, I don't rely on its readings as my only source when mixed down tracks. Plug-ins, I agree, can provide the same. My time-tested approach to mono-compatibility checking: first I look at some meters and then switch audio output to mono to hear what's really happening.
- EFFECT: The funny thing about the Edison is that it uses 1% precision resistors thoughout (this is the old version made in Germany with screws holding the face plate), but there are no trim pots for calibration in the MS domain, hmm. Common mode rejection too is all but fantastic. So I wouldn't use my unit of the Edison for anyhing supposed to be (pre-)mastering -- I tried twice, but didn't like the shifts in the stereo image. (This might be a matter of taste, and/or because there's something wrong in my unit). Yet, remembering that the idea of the Edison is to "mess around" with the stereo image (spread, LMF, balance, distance), it can produce interesting results in mixing as an effects unit on individual intruments. That's what I use it for and that's where I don't really care too much about it being accurate or not
And, yes, if I see a synth pad, for instance, lighting up too many red LEDs on the Edison, I am inclined to tweak the sound (on the synth first and then, if still necessary, on the Edison).
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