I have recently purchased an analog synthesizer (the DSI OB-6 Desktop). Unfortunately, the only place I can place it is on a window shelf which has a water-heated radiator below it.
I have read that musical equipment should be placed away from radiators (this has previously been covered here and here) as they may cause detuning. I'm not sure if there can be other problems, like something affecting the wood or material of the instrument.
My understanding is that the detuning primarily comes from temperature changes, not heat per se.
I am therefore wondering if I'm ill-advised to place the synth at this location? Is it alright as long as the radiator is always on, or should I turn it off (at the detriment of getting a chillier room during winter)?
Furthermore, I'm also concerned that the proximity to the window will further lead to more extreme temperature changes as the temperature variability during winter can be several tens of celsius. Although thermodynamics even out temperatures in a room, I find that it can sometimes be somewhat cooler by a window.