I would like to hear your opinion if you ever tried this out.
Yes I have. I've done it many times before but with my latest experiment several weeks ago , the cable is still in my system and I don't plan to remove it!
What you need to be careful about.
You need to get wires with good copper and with insulation on it. This is easily solved if you buy standard enameled wires also called 'magnet wire' in some places which are used to make transformers. I tried to get OFC ( oxygen free copper ) but looks like transformer makers don't care about that !
The wires must be below 21 guage (SWG).
Now even at this guage a single wire will have a significant dc resistance and also on the verge of being not 100% utilised ( cross section area wise ) at 20 Khz. So for HF it is effectively a higher impedance !
Theoretically the difference is very small and unimportant. But considering the non uniform impedance of the speaker it will affect the signal appearing at the speaker terminals and it can become audible. Typically as treble roll off and reduced damping at the LF end. There can also be 'wiggles' in the mid range region .
I'll see if I can put up a frequency response plot with a 24 swg wire on a real speaker. There are VERY few speakers with a uniform flat impedance over the audible range. Magnepan is one and some others that have been optimised to stay flat all through. Usually such speakers belong to the expensive category.
To over come the ( possible!) HF problem , you can use thinner wire which will make the dc resistance worse and affect the bass. To overcome that you can use multiple wires in parallel to bring that down for each line. Solder them together at the end. So each wire has effectively only it's original diameter as it's insulated at all other points from the other wires.
I've tried four 21 swg strands in each line and it made an audible difference for the better at HF and LF. I'm working on a plan to use 12 parallel wires using 24 swg which will need to be wrapped together. Not exactly so easy to do single handed ! Each line ( +ve or -ve ) is insulated with a cotton sleeve to prevent the + and the - wires from accidentally touching each other. Normally this isn't a problem as the enamel insulation is quite rugged. But repeated movement of the wires ( when you are experimenting !) might scuff off the insulation somewhere and 'might' result in a short. My current wires have no cotton insulation on one channel !
Should you try it ? Definitely yes ! It isn't expensive with a single wire run. If you use multiple parallel wires you might easily use up to 1/2 kg of copper which will cost around 300/- or so . Much cheaper in any case than a 'super' speaker cable !
If I remember where this thread is I'll put up the electrical comparison between different wires using a real loudspeaker !
