The capacitive impedance at audio frequencies is quite high. - - Bob Ammerman RAm Systems -----Original Message----- From: piclist-bounces@mit.edu On Behalf Of Justin Richards Sent: Friday, April 6, 2018 11:10 AM To: Microcontroller discussion list - Public. Subject: Re: [EE] impedance of unsecured parallel wires Mike, I assumed the closer the cables the more capacitance which would attenuate the higher frequencies more. To clarify, are you saying closer together is better for audio performance as it gives more coupling which is better as it lowers the inductance. Whereas cables spread apart gives less coupling and increases the inductive reactance which would attenuate the upper audio freq range more. Justin On 6 April 2018 at 16:09, Mike wrote: > On 05/04/2018 23:57, Bob Blick wrote: > > A very long time ago I needed to wire some loudspeakers and used two > strands of some salvaged single conductor insulated solid wire, fairly=20 > heavy gauge. When I later replaced it with regular speaker cable of=20 > similar gauge, the system sounded better. I wonder now if the wires=20 > vibrated enough because of the electromagnetic effect that it caused=20 > resonances. My ears were pretty good back then. > > > > Perhaps I should do some testing and see if I can measure the effect. > > > > Bob > > > > The closer the pair of wires, the better the coupling and the lower=20 > the inductance. If your speaker cable was e.g. 3 meters long (~10ft)=20 > then they could be adding around 1 Ohm inductive reactance at the=20 > upper end of the audio frequency range, if the wires were spaced apart. > > Mike > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive=20 > View/change your membership options at=20 > http://mailman.mit.edu/mailman/listinfo/piclist > -- http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/chang= e your membership options at http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .