[syil]

the sound of spindle was design by SIEG x3 machine,not us.we try to communiate with them cancel but it is hardly.they have around 2~3 model of mainboard and other electontics.that is why we drop X3 reason too.
so in X4 it is have been cancel this sound.

we didn`t drop the old customers,and we keep in service them replace parts if we have stocks.even though we sent whole X4 kits to customers change for X3.

currectly X4 elecontics better too much,we use one color cable and tight them very stable.every cable have code name.and cut in suitble length not like old confusion.you also can see the pic we add 4 axis quickly connector and water pump switch.