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Mount them at right angles to each other, and if you still have too much coupling between them then switch to toroidal inductors.
and still another way..... place a metal shield between them with the shield soldered to the PCB groundplane
very effective and often used in RF circuits
Dave
i see, isee (>_<) my bad ... i thought you meant correct angle...
I'm making a passive 3 way crossover for our school project..
On a schematic a ground is just a point, but on a printed circuit board ground is often VERY LARGE. In audio, RF and many circuit, ground is very critical. Ground is not a single trace. It is common for one side of the PCB to be completely covered with copper. GROUND In a digital PCB is is common to have one layer of copper for ground, another complete layer for supply(s) and two layers for signals.what exactly is a groundplane? is that the part or the connection that is connected to the ground of the circuit?
NOT a concern at audio frequencies
Most audiophiles (especially DIY'ers) would not agree. I not only go through the trouble of mounting my inductors at right angles to one another, I make sure they're at least few cm away from one another and any materials (including the speakers) that might affect their inductance. I also verify speaker impedances and resonant frequencies before selecting crossover components.
This isn't exactly the right forum for this, but getting a passive crossover to perform perfectly while the speaker's impedance changes with both frequency and temperature is impossible. Taking the basic precautions to least keep your overall response a couple of dB flatter across the audio spectrum is essential IMHO.
I'm absolutely positive you couldn't tell any difference on double-blind tests
A couple of dB isn't noticeable by the average listener as most can't discern less than 3dB. I do audible noise testing and analysis on motors and related mechanisms and notice more than most but I somehow doubt I discern anything below 3dB myself. However, flattening response by one dB with better matched components, another dB with a Zobel network, a third dB with an attenuation network, yada yada ... will eventually add up to a noticeable difference.
The results my Minimus 77 rebuild is testament to some of the general rules of thumb. The sould quality is greatly improved. I wish I had some "before" data but a better crossover flattened a decent hump at 2.3KHz. It resulted from not crossing over more than an octave above the tweeter's resonant frequency. I doubt my attenuation network would've hit the right frequency if I had mounted its inductor too close to the speaker or the metal cabinet or the low pass network inductor. It could've easily made things worse.
You're saying that a network shifted from the intended -6dB at 2.3KHz to -6dB at <2.0KHz (leaving the adjacent half octave at almost twice its intended volume) would be undetectable?
It appears that audiophiles are a favorite target of defamation on this forum.