I just got a pair of 10 years old QED XT-400 speaker cables from my friend. I wonder if it's still good? What is the lifetime for speaker cables? Any maintenance for speaker cables?
I can't see a problem with older cables as long as they're not kinked or damaged or anything.
I work with phone cables all day (much, much thinner than the majority of speakers cables), many of them decades old and the only times they tend to need replacing is when they're cut or crushed.
Hi-Fi: Arcam A85, P85, CD192. B&W 602S3, PV1, Grado SR125, Atlas Titan, Hyper 2.0.
A/V: Sony KDL-V40A12U, BDP-S760, Humax Youview, Onkyo TX-SR875, B&W MT30 7.1, QED HDMI-P, S.A XT
Hi-Fi: Krell KAV-300cd, Michell TecnoDec/RB250/Grado Prestige Black1, KAV-300i amp, Transparent balanced interconnects and bi-wire to Sonus faber Concerto grand piano speakers, Nakamichi ZX-7 cassette deck, Logitech Squeezebox Touch, Hitachi FT-5500 and Sony S570ES tuners, BCD Engineering stand, RA Powerlink, Chord powerchord, Grado SR60i cans.
AV: Sony Bravia KDL-32EX503 telly, BDP-S370 player with QED HDMI. Currently unused: Denon AVR-1705, DVD-1710, KEF KHT1005.2
No maintenance other than avoiding obvious damage or damp. I have cables around 15 to 20 years old, and know of some more like 30. If you don't have terminations ( like banana plugs) then you should restrip and remake the ends every few years.
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