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McIntosh Audio A Tradition of Excellence |
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Thread Tools | Display Modes |
#11
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4 x 462 = more power supply
they would work with very very low distortion |
#12
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#13
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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. |
#14
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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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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, Clearaudio Performance SE. Satisfy tonearm & Maestro Wood MM cartridge. 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:Two PSI Audio AVAA C20, Multiple GIK products, Stillpoint Apertures, Stillpoint Minis and Ultra SS, Three 20 Amp lines, Furutech GTX - Gold outlets, Adona Rack |
#15
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#16
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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, Clearaudio Performance SE. Satisfy tonearm & Maestro Wood MM cartridge. 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:Two PSI Audio AVAA C20, Multiple GIK products, Stillpoint Apertures, Stillpoint Minis and Ultra SS, Three 20 Amp lines, Furutech GTX - Gold outlets, Adona Rack |
#17
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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. |
#18
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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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