Sorry of this appears twice, I got a bounce on the first submission:
The Pro Audio Engineering Kx32 Heatsink has more surface area than any
other commercially available KX3 heatsink. Regarding mass, more is not
necessarily better. If you take two heatsinks with the same surface
area, on the initial key-down the one with more mass gives a longer
initial warmup time. Unfortunately it also retains heat longer, meaning
on the subsequent transmit cycles, it still retains heat from the
previous cycle. We strove to minimize the mass of our heatsinks, the
limitation ended up being rigidity and resistance of the fins to damage.
The limitation on convective heatsink efficiency is not the thermal
conductivity of aluminum, it is surface area. Our tests show very
little thermal Δ (delta if your browser is ASCII only!) across the area
of any given heatsink of almost any convective design. This is because
the limitation is dissipation due to convection. If you model the
thermal path as a series string of resistances, the aluminum is very low
resistance and the surface to air resistance is very high.
For more information visit our website!
Cheers & 73,
Pro Audio Engineering
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