Bi-amping McIntosh MC2120 and MC2125 with Klipsch RP-5

Thanks, in what way do you mean I am going in the wrong direction? I agree, with these particular speakers I have plenty of power driving them with my current solo Mc2125 but I no have my dads Mc2120 and I don’t intend to sell it so I may as well use it. Are you saying this would deteriorate my current sound?

Go vertical.

I have a biamp set up and I use solid state for the bass drivers and tube amplifiers for the upper drivers.  I use MC 901 McIntosh monos to achieve this. It’s working out really well for 802 d3 Bowers speakers.  It’s definitely a lot of power.  Maybe I could achieve the same result with 300 W mono tube amplifiers and be just as happy without the biamp.  But I’m very happy with what I’ve got.

You’re got very sensitive speakers and I suspect Will have no problem using tubes for the bass drivers.

I’m with Glennewdick on this.  You inherited Dad’s amp, and you want to incorporate it into your already well equipped system…very understandable…but your system simply doesn’t need it. Put the 2120 on a shelf in a place of honor, or develop a second system built around it, or…best idea…get different speakers without powered woofers, where one amp drives the passive woofers and the other both mids and tweeters.  If it must be Klipsch, something like KLF-30s, Cornwalls, or the like.  You will need to redo your speaker wires.

The possible advantage is eliminating the passive crossover network at the speaker but you have to replace it with an electronic crossover ahead of the amplifiers. Experimentation is required.