doubt regarding classroom mic project | Projects › Projects › doubt regarding classroom mic project This topic has 1 reply, 2 voices, and was last updated 10 years ago by AJISH ALFRED. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts March 24, 2014 at 6:47 am #2978 HarikaParticipant can you tell me the ratings of speaker used in classroom mic project April 7, 2014 at 4:51 am #11490 AJISH ALFREDParticipant Hi, Commonly used speakers in hobby circuits are 8 ohm, and less than 5W. If you are not using power amplifiers, then it would be safe to use a speaker with power rating 0.5W Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In