Today I had beans !
sorry wrong tread
Lets keep it fifi
Today I got a drill
WP_20180607_18_06_53_Pro.jpg
Should be enough to drill any thing of any size
Pretty quiet to
sketch of fan controller
l WP_20180607_18_15_36_Pro.jpg
one may like the amplifiers to warm up pretty fast, no need to call home before hand to get GF, Wife or whatever to turn FiFi on and keep the temperature stable as the lauder one play the cooler the sinks get (up to a point)
On sketch is just general Idea (may not work as drawn)
There may be a few LED to put here and there say yellow cold, green You can now stop doing whatever you doing whit GF, Wife and such and listen to same music, Red for 2 hot fan failure and switching power off