Thank you - this is getting closer.
My thinking is a 200mm wide heat sink that is about 600mm long. Depending on the fin height, this can certainly meet the dissipation requirements of 192W. This would form the backside of a vertical monoblock, and the front side will be either a wood or metal structure which together makes a stand for my speaker. So far. the Austerltz KS216 looks good, but that can be pretty pricy.
0.06 C/W , passive, is piece of cake
just use boat hull as sink
and put it in the water
ZM - thought of this already but wife ruled out having a moat around each speaker.
The Serb enjoys rubbing it in that I have to sleep under a bridge or in a dumpster, due to not having learned a trade.
(for your own sanity, ignore him)
Yes. Think of a speaker stand with a 200mm wide, 600mm tall heat sink at the back, with front and sides to be made from wood or metal to keep the heat sink vertical, and the speaker at the correct vertical height. In other words, a modern "field coil."
Hello ci11. The resulting hot air from the heat sink stand will rise straight up and bathe the loudspeaker with warmth. The loudspeaker may have been designed to operate within a narrow range of ambient temperatures; unless it has basis in automotive components. Expansion of metal of the drivers, and the possible accelerated loss of plasticizer in the woofer surround may impact the parent sound.
Tall heastsinks are nowhere near as efficient. You really need to run them 600mm length ways (not 600mm in height) to get the cooling you require, unless you decide to resort to adding a fan
Yes, I am aware of the heat rising. My current setup has a 50mm thick "plinth" of solid maple underneath each speaker. The coupling is BluTack. The plinth is then coupled to the floor. This has worked out sonically very well, and appearance-wise, somewhat acceptable as well since my speakers are in maple, albeit a different color.
So the "stand stand" would couple to the plinth, and the plinth to the speakers. In this setup, there is a 2mm air cushion between the speakers and the plinth. If 50mm proves to be insufficient and there is a noticeable temp rise on the speaker cabinet, I go to a 60 or 70mm plinth. Sonically, the plinth appears to help more than hurt.
I was not aware of this. The fins on the KS216 are 83-15=68mm tall and it will be in free air. A fan can be added, and I may have approval from the wife because an external fan does not need to be an ugly PC fan ;-).
Fans ? We don't need no stnkng Fans !
http://www.noctua.at/pdf/infosheets/noctua_nf_s12a_flx_datasheet_en.pdf
(10.7dB at 2m/s, 7.4dB at 1.6m/s)
Actually, this wife-approved fan is what I have in mind. Beside, a little Western Electric never hurts the sound...;-)
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