High level input

It seems to me the MC352 is significant overkill for the PD80 loudspeakers. Doesn't answer your question, but it strikes me as a mismatch.

Tvad, with all due respect the PD80s are rated from 1-600 watts per channel, I run 350. I could be wrong but it seemed wrong to run a low powered amp when each speaker houses a 1000 watt sub amp pushing 2-15s.

Max. power input has little to nothing to do with matching an amp to a speaker.

Anyhow, to answer your question, the impedence of a speaker level input on a sub is so high that it demands very, very, very little of the amplifier.

All of your watts are still going to the midwoofers/tweeters.

:)

The PD80s are rated at 101db/1w/1m and 4 ohms. That means you need only 1 watt to produce 101db at 1 meter (104 db at 2 watts, 107 db at 4 watts, and 110 db at 8 watts, etc...). Do you ever listen this loud? If you listen at "normal" levels of 88db-90db, the MC352 is using a fraction of 1 watt to drive the PD80s.

You will likely never use more than 2 watts of the MAC's 350 watts to drive the PD80. The PD80 are rated for high power in the event someone uses them as PA speakers to fill churches, auditoriums or theaters with the necessary volume to recreate live-level sound. You will never approach this volume in your listening room.

The reason you can run a low powered amp...like a SET amp...is precisely because the PD80 have their own 1000 watt subwoofer, and the primary amp doesn't have to do the heavy lifting of driving the woofers.

Hey, if you love the MC352, then by all means use it, but it's overkill for speakers with 101db sensitivity and built in 1000wpc subwoofer amps. My comment about mismatch was simply regarding the power required by the PD80 and the power supplied by the MC352. The comment had nothing to do with the synergy between the two, and the resulting sonics.

Don't take my word for it. Call Ty and verify what I've written. If he says something to the contrary, please correct me. I'm always open to learning something new.