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  #11  
Old 08-03-2018, 11:36 AM
mati1979 mati1979 is offline
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4 x 462 = more power supply

they would work with very very low distortion
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  #12  
Old 08-04-2018, 01:35 AM
uglatto uglatto is offline
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Quote:
Originally Posted by dixon007 View Post
There may be another option. I understand that on the 611 (and 1.25kW), because of the autoformers, one can use each mono unit to bi-amp each speaker by placing individual speaker wires on the 8 ohm and 4 ohm terminals and connecting to the respective bass (lower) and mid/treble (upper) speaker terminals. AAer’s do I have that wrong? Good luck with your decision.
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Originally Posted by crwilli View Post
That is correct. That can also be done with one MC462 and offers the option to save some $. To my mind, I feel the best choices are 2 x MC611s or 1 x MC462. Up to the budget.
Is this true of the MC452 and MC601s as well, or just the newest models?
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  #13  
Old 08-06-2018, 07:01 AM
4music 4music is offline
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Quote:
Originally Posted by crwilli View Post
That is correct. That can also be done with one MC462 and offers the option to save some $. To my mind, I feel the best choices are 2 x MC611s or 1 x MC462. Up to the budget.
Hi crwilli,
At the moment I am experimenting with my MC1201 connected to my B&W800D2. 4ohm to mids and highs and 8ohm connected to bass. I noticed that the amp gets slightly warmer than usual. Am I risking a problem with the speaker or the amp? Is it OK that I use it like this? I am not 100% sure, but I think I like it better than connecting everything to the 8ohm.
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  #14  
Old 08-06-2018, 12:23 PM
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I have no direct experience with the MC1201 but it has autoformers which I believe are the key and More importantly, I found this on the Berners site. This quote is from the McIntosh MC1201 brochure. I added the **** to point you to the salient sentence.

“Featured Technologies
DOUBLE-BALANCED PUSH-PULL DESIGN. The MC1201 is fully balanced from input to speaker output. Matched amplifiers operate in complimentary push-pull with their outputs combined in the McIntosh autoformer. The resulting double-balanced configuration cancels virtually all distortion. This circuit design is possible only with the McIntosh autoformer.
EXCLUSIVE MCINTOSH OUTPUT AUTOFORMER. An impedance mismatch between an amplifier and loudspeaker can cause distortion and a reduction in power. The legendary McIntosh autoformer is a hand-crafted transformer with output connections for 2, 4, and 8 ohms, allowing an ideal impedance match. ***** A McIntosh amplifier with an autoformer can also safely drive multiple speakers connected in parallel without shortening the life expectancy of the output stage. *****. There is absolutely no performance penalty with an autoformer. In fact, its frequency response exceeds that of the output circuit itself, and extends well beyond the audible range. Distortion is so low it is virtually immeasurable.
EXCLUSIVE MCINTOSH POWER ASSURANCE SYSTEM. Power Assurance is a collection of technologies that enhance performance and reliability and protect the amp and the loudspeakers.
Power Guard[emoji768] clipping protection. Power Guard ensures that the amplifier will always deliv- er full power without causing clipping distortion. If an amplifier channel is overdriven, Power Guard automatically reduces the input volume just enough to keep distortion below 2% and prevent any clipping distortion. Thanks to an optical resistor, Power Guard acts literally at the speed of light, producing absolutely no audible side effects. An amplifier with Power Guard will actually deliver clipping-free output well above its rated power.
Sentry Monitor[emoji768] current protection. Sentry Monitor continually senses the voltage and current of the output stage and confines it to a safe limit. Sentry Monitor does not limit power output. Thermal Cutout. If the cooling air is blocked and the power transistors become too hot, thermal cutouts protect against overheating until the amp cools.”
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  #15  
Old 08-06-2018, 12:28 PM
4music 4music is offline
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Quote:
Originally Posted by crwilli View Post
I have no direct experience with the MC1201 but it has autoformers which I believe are the key and More importantly, I found this on the Berners site. This quote is from the McIntosh MC1201 brochure. I added the **** to point you to the salient sentence.

“Featured Technologies
DOUBLE-BALANCED PUSH-PULL DESIGN. The MC1201 is fully balanced from input to speaker output. Matched amplifiers operate in complimentary push-pull with their outputs combined in the McIntosh autoformer. The resulting double-balanced configuration cancels virtually all distortion. This circuit design is possible only with the McIntosh autoformer.
EXCLUSIVE MCINTOSH OUTPUT AUTOFORMER. An impedance mismatch between an amplifier and loudspeaker can cause distortion and a reduction in power. The legendary McIntosh autoformer is a hand-crafted transformer with output connections for 2, 4, and 8 ohms, allowing an ideal impedance match. ***** A McIntosh amplifier with an autoformer can also safely drive multiple speakers connected in parallel without shortening the life expectancy of the output stage. *****. There is absolutely no performance penalty with an autoformer. In fact, its frequency response exceeds that of the output circuit itself, and extends well beyond the audible range. Distortion is so low it is virtually immeasurable.
EXCLUSIVE MCINTOSH POWER ASSURANCE SYSTEM. Power Assurance is a collection of technologies that enhance performance and reliability and protect the amp and the loudspeakers.
Power Guard[emoji768] clipping protection. Power Guard ensures that the amplifier will always deliv- er full power without causing clipping distortion. If an amplifier channel is overdriven, Power Guard automatically reduces the input volume just enough to keep distortion below 2% and prevent any clipping distortion. Thanks to an optical resistor, Power Guard acts literally at the speed of light, producing absolutely no audible side effects. An amplifier with Power Guard will actually deliver clipping-free output well above its rated power.
Sentry Monitor[emoji768] current protection. Sentry Monitor continually senses the voltage and current of the output stage and confines it to a safe limit. Sentry Monitor does not limit power output. Thermal Cutout. If the cooling air is blocked and the power transistors become too hot, thermal cutouts protect against overheating until the amp cools.”
Many thanks for the reply It is always good to check the manual...as long as you do not forget it
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  #16  
Old 08-06-2018, 12:39 PM
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Happy to help as much as I can. By the way, check out and bookmark the Berners.ch McIntosh site. Great resource. The other reference site is Roger Russell’s.
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Main Equipment: Kharma Elegance dB11-S, JL Audio F113v2 X 2, Block Audio Line & Mono SE Amplification, Bricasti M21 DAC, Antipodes Kala K-50 Server
Power: Shunyata Everest 8000, Sigma XC v2, Sigma NR v2, Block Audio PCs, Defender, ADDPowr Wizard
Grounding: Shunyata Altaira CGS - 4 X Alpha CGS cables,
Network : Supra Cat 8+, Twin (Nenon) Modified Buffalo GS2016 Switches, Keces P3 LPSU,
Cables: Wireworld Platinum 8 USB, Wireworld Platinum Eclipse 8 Speaker cables, 6M & 1M Tubulus Concentus ICs,
Other: Multiple GIK products, Stillpoint Apertures, Stillpoint Minis and Ultra SS, Three 20 Amp lines, Furutech GTX - Gold outlets, Adona Rack
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  #17  
Old 08-06-2018, 11:30 PM
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GaryProtein GaryProtein is offline
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Quote:
Originally Posted by crwilli View Post
Can the MC462 be bi-amped? I suggest you do a little more research with your dealer or on the McIntosh site.

YES!

I am using Pass Labs active crossovers and bi-amping my pair of MC602s on my midrange and tweeters.

One amp does the left midrange and left tweeter and the other amp does the right midrange and right tweeter.

The woofers have separate 2000 Watt monoblocks which completes the tri-amping of the system.

Last edited by GaryProtein; 08-06-2018 at 11:35 PM.
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  #18  
Old 08-11-2018, 02:48 PM
kamiraa kamiraa is offline
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Do the 611, you can run off two leads per amp basically passively bi-amping the setup . . .

If you want to do a true bi-amp you need to run an active EQ like the McIntosh MEN220.
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