On a stereo receiver, do you lose power when you switch to a+b?

ideal amplifier double power half impedance 100 watts @ 8 ohm 200 watts @ 4 ohms. consumer amplifiers not ideal amplifiers instead of doubling power half impedance power increases lesser amount. how less depends on quality of receiver.

typical mass market receiver rated 100 watts 8 ohms may 130 ~ 140 watts 4 ohms assuming can handle 4 ohm load. (some can not) if have 2 8 ohm speakers in parallel, (on , b terminals) have 65 ~ 70 watts per speaker.

i've never heard of receiver put , b in series , make 0 sense. speaker impedance not linear if put 2 dissimilar speakers in series affect each others frequency response should never this. if speakers identical can put in series otherwise must put in parallel consequently make no sense manufacturer build receiver put , b speakers in series.

long impedance load within receivers rated capacity not make receiver sound different. lower total impedance make run hotter , have lower damping factor there degradation in sound quality not significant unless below receivers rating.

mk

when powering both sets of speakers there loss of power?

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