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Monday 21 May 2018 at 07:36
Most multimeters are not very accurate under 5 or so ohms.
You should use a special low resistance meter for accuracy BUT, as has been stated already, you aren't really wanting to measure the resistance, it's the impedance that matters to the driving circuitry.
Source: http://pinside.com/pinball/forum/topic/how-many-ohms-is-this-speaker#post-4409343