Hello from a long-time-no-see member.
I have purchased a pair of pre-owned Beolab 6000s (1992) for my living room. My first impression is that they perfectly fulfil their promise: they blend seamlessly into interior and yet they maintain their appearance and presence, and they are able to fill 25 sqm with any sound requirement short of floor shaking. Not less important is that they do not require any audio components to work and this is exactly what I wanted to avoid - to begin piling electronic boxes - so as to maintain the ambiance dominated by books and paintings (and a 40" TV set).
I admit that I bought these speakers without listening and I had never heard Beloab 6000 before. However, I found out that they sound dark, with recessed treble. I can confirm that both tweeters work, but it takes treble boost preset in Apple Music equaliser (1dB@2kHz, 3dB@4kHz, 4.5dB@8kHz and 6dB@16kHz) to make them sound right. I was wondering if these twitters are prone to deterioration, such as sticky ferrofluid, or other problem, that would require replacement. Another possibility is failing adjustment trimpots, however I would rule this out because both speakers sound the same.
Woofers on both speakers were replaced with foam suspension. This is supposed to be more flexible than rubber, however on touching and pressing, these surrounds seem harder and tighter than rubber. While I have no complaints on bass and midrange, should these be replaced with rubber, which is recommended here on forum? And, since the drivers already went through foam replacement, can it be done again?
Finally, after 32 years, should recapping be considered at this point? One speaker seems quicker on automatic turn-off than the other, by 20 seconds.
Thank you in advance for your advice.
Milan