I recently replaced my BDP-83SE with a BDP-95, and given some of the comments I've read from others concerning fan noise, a problem that has very much bothered me too (and with both of the players), I thought it might be helpful if I described some of my recent experiences, and the best solution that I have found. When I first installed the BDP-95 in my wooden stereo cabinet, which has two shelves that are open on the front but closed on the sides and back, except for a few 4 inch ventilation holes in the back, the fan came on frequently, and often caused a very loud noise. By removing the back panel from the cabinet and moving my BDP-95 to the bottom shelf and my integrated amplifier to the top shelf, I was able to keep the fan from coming on as often, and to reduce the amount of noise that it made. But the fan still came on after about 50 minutes, and during a total test period of 3 hours, it came on 9 more times, each time for roughly 4-6 minutes (and each time at low speed, except for once toward the end of the 3 hours when it came on at a higher speed).
Because my listening room is very quiet, and I'm very sensitive to noise and the nuances of musical performance, and mostly listen to classical music at low to moderate volume levels, this remaining fan noise still really bothered me. In trying to brainstorm a solution, I considered both thermoelectric and exothermic approaches, but quickly gave up on a thermoelectric solution due to both practical and cost related concerns. In the end, what seemed most promising was an exothermic approach using cold packs, so I checked the web and finally came across some "Moisture-Resistant Cold Packs" that are used to keep pharmaceutical products cool and dry during shipment. Before placing an order, I contacted Oppo, described the cold packs and how I planned to try using them, and asked if there would be any warranty problems if I proceeded. Oppo said there would not be, so I ordered one dozen 24 ounce "Moisture-Resistant Cold Packs" from ULINE for $21, plus S/H (Model S-18251, www.uline.com
The cold packs contain non-toxic gel, feature a non-woven 1.5 ounce leakproof outer poly cloth that "absorbs all moisture," are reusable, and when placed in a normal freezer overnight are said to reach a temperature of 30 F. After some experimenting, I found that placing 3 of these cold packs side by side on top of the BDP-95 seems to work best (which leaves an inch or so of the player uncovered at the front and back), and that by using the cold packs in this fashion, I can keep the fan from coming on at all for about three and a half hours (with room temperature in the 60's), at which point the cold packs have warmed up enough to need to be changed. Although the cold packs did seem to absorb almost all moisture when I first tried them out, leaving the top of the Oppo only slightly damp, I have found that in everyday use, when I do not give them the time to completely dry on the outside before refreezing, they do gather some frost in the freezer and leave a bit of water under them on top of the player, but since my player is level, this has not seemed to pose any problem, and has been easy to simply sponge off. I towel each cold pack pretty much dry after use and place it in a zip-lock freezer bag for refreezing.
Since this is my first post on this site since purchasing a BDP-95, I might also mention that I have been surprised and pleased at how much of an improvement in sound quality I note with the BDP-95 over the BDP-83SE, in terms of spaciousness, detail, bass definition, and sheer musicality, even in my rather simple stereo system (BDP-95 via Audience 24e's to NAD C325BEE via Kimber 8TC's to NHT Classic Threes, with the NAD plugged into an Audience aR1p). I can't say I enjoy the cold pack routine (and I certainly hope that Oppo or someone will come up with a better solution soon), but at least for three and a half hours I'm in musical heaven. Bravo to Oppo for a great design, and thanks to those on this forum for the many comments I've learned from.