I'm considering buying a pair of Spendor SP3/1p, which were manufactured 1996 until I'm guessing 2010. So worst case, the surrounds are 25 years old. Assuming they were kept inside (climate controlled), should I be concerned about the woofer surrounds? Or anything else (e.g., electrolytic caps)?
I would be assured that, given the high quality of Spendor speakers, the woofer's synthetic rubber surround will not have degraded, even after your stated maximum of 25 years. My woofers employ similar surrounds and show no sign of deterioration after 35 years.
Spendor use quality crossover components, including plastic film capacitors.
25 years is not long for a bipolar loudspeaker electrolytic, even if one is fitted somewhere in the crossover.
Spendor use quality crossover components, including plastic film capacitors.
25 years is not long for a bipolar loudspeaker electrolytic, even if one is fitted somewhere in the crossover.
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One can find out for certain the surround condition once the T/S parameters(impedance) are measured/calculated.
But only when one has access to the loudspeakers. Greg is simply considering whether he should buy them.
How can this be measured or calculated? Is it not only possible to measure the actual state and not the original state?
Looking at some early B&Ws is all it takes. When they start looking like that Dali painting, it's time for replacement. If they look/feel good, play good, not bleeding any liquids, they're probably as good as they'll ever sound.