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70-100 decibels
120
The iPhone can produce a maximum of 100 to 115 decibels.
60
64 watts = 18.1 decibels. If by 'set' you mean you have two 64 watt speakers then they will create 36.2 decibels.
There is a few generators that will produce less than 60 decibels. That is about the same decibels as background music. These are good to use if you live in an apartment or have very close neighbors.
It depends on the size of the engine and how well maintained it is.
It depends on the size of the engine and how well maintained it is.
20 decibels
207 decibels.
Many things can cause a snowmobile engine to back fire. Ignition coils ( spark plugs, coils) or water in fuel. Check these and maybe it will solve your problems.
About 130db but that is just one car