Zonker92

But see this: AudioKarma.org Home Audio Stereo Discussion Forums - View Single Post - B&W Series 80 Model 802 Speakers The brochure here states that the series 80 did have APOC. I'm thinking these speakers had several versions. (See here: http://www.audioasylum.com/audio/speakers/messages/23/230902.html) But what did "Series 80" mean anyway? Was it a reference to the 1980s?

I found this thread and had to register to chime in: I have a minty pair of 802 Series 80s, but I guess mine are a slightly newer style, without the rear controls. I'm posting to say that I understand that their crossovers are located under the fabric covers on top of the lower cabinets, just under the heads. I don't really plan to mess with mine, since my speakers really sound terrific to me, although this thread does give me some concern about dried electrolytes. I found this photo on line, which appears to be an 802 crossover with the APOC circuit. I don't know if it's stock, but I think so. The "Model 802" owner's manual I downloaded says they are maintenance fee; they don't need a battery and are powered by the amp. I tried to look at my crossovers just out of curiosity, a few days ago. I removed the heads and tugged at the fabric covers but they wouldn't budge, so I didn't force them. Based on this photo, I don't think the crossovers are accessible from the mid-bass driver openings ... [EDIT] But then I just found this thread which claims that they are battery-powered and that the batteries do need to be replaced, so maybe the owner's manual I have is the wrong one, as this photo. I'm kind of confused at this point. Eric