That depends on if you're Right Handed or Left Handed...
Nothing like a little "Electron" humor to make a post more Electrifying...
(...a Loud groan emanates from the auditorium...)
Ok, you ask an interesting question - but in reality - the question may be more of which wire is best to use for the main Audio (live) wire.
There are times when wiring a speaker "back-wards" tends to emphasize a specific type of sound to enlighten a user or those that play with audio to obtain a specific effect -To or from- a type of sound for their album or song...
Since most Mics produce an AC (alternating current) type of signal - the main premise is to use the wire that has the most shielding or external location of winds to the outside - as negative - to provide some coupling shielding and even a common mode effect of noise pickup - closer to ground than to have the external part of the coil subjected to stray noise fields...
Here's an example...
(...besides sir, you have already played with these so you know pretty much the end of how this turns out...)
I'm being generalized here for a reason so we don't get bogged down with too much information...
In reality, you may need to examine the "Cavity" or Capsule the mic is in.
Most mics to develop a strong return for the smallest of Vibrations - have to orient the Magnet to Coil in the right fashion to gather this energy from the Vibration without the process of self-cancellation - an effect caused by the reverse EMF the coil induces once the Signal is "caught" - by the expenditure of energy against the ohmic losses then can have a loss effect of signal degradation caused by the inductive effects and the dampening - as well as the energy the coil is trying to dissipate is now traveling thru the coil winds and thru the copper used - that has ohmic losses adding to this.
So to be honest, reversal of wires may not have the effect you wish to have, but in light of the potentials your working with, any effort to reclaim the losses the coil would otherwise had within itself - anything is worth a try.
But remember too - the capsule is the main culprit - if it isn't designed right or has no way to equalize pressure between the membrane and the external world - can stiffen the membrane's response and you get horrible results.
There's always another use for moms' Salad Bowls Collection
You showed various Dynamic mics that you took out the "felt" and by doing so increased the pickup and changed the tone of the mics response. This is why they put the element in a capsule like they do to keep the sounds oriented to strike/vibrate that membrane to achieve their desired effects. This "desired" word is arbitrary - you can use any way you wish, including a parabolic dish and when the mic element is aimed towards the apex of the foci the dish has - you'd pick up a lot of audio signal from the effort but it's highly directional - partly due to what and where the Mie element is placed facing towards the dish.
One MAJOR aspect that tends to get overlooked...
THE SPL - Sound Pressure Level...
Too much - you lose QUALITY of signal (changed to Distortion)
You don't want that....
So to entertain yourself - you did something like this already with other mics, just reposition - remove or otherwise adjust the dampening felt used in the capsule to lower/raise or change the tone and improve or lessen the pickup sensitivity. More Felt adds "bass" - too much you get more of a rattle. Less Felt gives you higher tones and sometimes it's too much for one's hearing to tolerate.
The Coil itself has a start and a finish. and a lot of winds in the middle. So the issue of stray noises and fields that can add aberrations to the signal does "try" to get addressed - they usually wind the coil to have it's negative to the case side - while the start of wind wire is more internal and closer to the suspension core - where the ring magnet or E magnet has it's stronger to strongest fields intersecting the copper closest to the core of the copper winds.
Again, knowing these are "mass assembled" in dark comers of the planet - wiring color does show a polarity and how to determine the polarity? Well, a small battery can usually reveal the coils initial direction of best POSITIVE flow.
The thing is a lot like a solenoid - so it too can show polarity - if done carefully and gently - just apply a small current to the coil wires then reverse the connection, and observe how the membrane "distends".
When hooked one way connection - it goes in, (which is what you want) the other pushes it out (lifts - the inertial return effect) where it is looking for it's state of rest.
The Coil of a GOOD element - rests in the center of the strongest fields - which tends to isolate it from external effects of noise - the membrane is where it hears the external world, the wires from the coil are sending the results of the effort.
Use what works for you.
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