Mono-blocking my two Mc Intosh MC-2205's ???
I thought that just because I own a Mc Intosh MC-275, a MC-225, a C-2200, and a C-32..., I knew everything. What happened ? Have you looked at the owners manual to see if this can be done or not ? http://www.berners.ch/McIntosh/en/Frame_McIntosh.htm While this information is from a few years ago, it still might be useful someday should something happen : http://www.audiokarma.org/forums/showthread.php?t=105138 |
Don't have a Mac but according to the lit, there is a switch on the back for mono operation. Typically, but not specifically to the 2205, you would flip that switch to mono, use only the right channel input only (both amps) and connect the speaker wires to both left and right positive (+) terminals on the amp. Again, I can't confirm any of that specifically for the 2205. My experience is with Plinius and has been positive. Macs are ruggedly built and the output impedance is halved when bridged this way (0.5 ohms). If the Infinity speakers are the same vintage, this should be a benefit. There are many amps that should not be bridged but I doubt you could damage the Macs unless you screw up the wiring. I remember reading in the Plinius manual that connecting the negative(-) speaker terminals could be fatal to the amp but it's a possibilty the Mac mono switch is more inclusive. I also don't have independant gain knobs to deal with but I doubt that should be a problem. |
Some of the Mc amps are mono bridge and some are mono parallel. For modern (i.e., low impedance) speakers, the latter is the clear and obvious choice. Lucky for you, you have mono parallel switched amplifiers. Monoblocking will give you vast improvements in all aspects of sound quality compared to a single amp, IMO. Also, be sure to try the high sensitivity switch. Moving it from 2.5V to 0.75V will improve dynamics and detail by a considerable amount in many cases. Just be sure to turn your preamp volume all the way down before turning everything back on because they will play much louder than before. Play with the gain controls too. I had a 2125 that sounded best with them all the way up but I've since heard some that sounded best at like 2:00. Experiment and see what you get. Enjoy your new amps! They will sound incredible once you figure out the right settings. Arthur |
