Axiom Home Page Forums General Discussion Stereo Harmon Karden 3480 and M22's

I think you made some great choices there. The 3480 seems to be the "best kept secret" in stereo receiver selection and seems to be built around a very solid amplifier.

BTW, I have a slightly older HK stereo receiver (3270, I think) which also has subwoofer out but as far as I know there is no built in crossover either in my receiver or the 3480 -- the subwoofer out just gives you a convenient line level jack to hook up the sub, but all frequencies go to the jack.

Since all frequencies will also be going to the M22s, I think you would want to use the crossover on the sub to roll off subwoofer output at about the same frequency the M22s start to roll off, somewhere in the 60-80 Hz range.

Maybe check the manual re: crossover on the subwoofer out jack -- if the manual for a stereo receiver doesn't mention a crossover then you have to assume "no crossover", unlike for an AV receiver.