The effect of the sound pressure on your ears depends on the distance to the sound source.
How loud?I cant write how loud it is.but 15w RMS subwoofer is enough for a small room full of bass.10w RMS Satellite speaker is enough for enjoying Vocals and other midrange for a normal room.
10w/60 10w/60 10w/60
Yes
i would suggest 10w 40
nothing
If: 10w = 25 Then: w = 2.5
about 430ml of 10w (manual says 5w but everyone is using 10w, even shops recommends 10w)
As far as I know 10w -20 hydraulic would mean that it is a 10w that will protect to -20 degrees. So, yes it would be the same except for listing what temperature it would protect down to.
10W-40 10W-40
Pennzoil 10W-30 or 10W-40.
10W-30 or 10W-40 can be used.
10w-30 or 10w-40 oil