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#1
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From excitement to disappointment
Emocional “sign wave” today; I purchased a second amplifier (MC 275VI) to run in a mono block configuration with my existing MC275. After connecting everything there is no sound from the left channel that is powered by the previously owned amp. Well to make a long story short after a long trouble shoot session it turns out that my old amp is not working in mono mode. I never discovered it until now since I never had used it in mono. It has always and still does play perfectly in stereo but switch to mono and nothing, on the up side the newly acquired amp that could have had an issue since it’s previously owned works okay. This has been so unexpected that I feel that I may be missing something but a simple flip of a switch confirms it. Looks like it’s repair time for me.
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[FONT="Arial"]McintoshC22, 2/MC275VI,MusicHall MMf7, Jolida JD100,PSA DSD, Spatial M5, 2/REL T9i, Shunyata Hydra. |
#2
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is it possible that you connected the input to the LEFT amplifier to the LEFT input, which is not in circuit with the amp when operated in MONO? this would be a simple mistake that would result in the amp having no output ...
the input to each amplifier should be to the RIGHT/MONO input only. Last edited by damacman; 07-10-2019 at 10:51 PM. |
#3
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ATC2-
Does the amp in question work in the mono mode without the straps in place? So when listening as a single amp in stereo will it still produce sound when switching to the mono mode?
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AKA J2Ordan McIntosh/Legacy/VPI/Bricasti/DIYCable |
#4
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Quote:
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[FONT="Arial"]McintoshC22, 2/MC275VI,MusicHall MMf7, Jolida JD100,PSA DSD, Spatial M5, 2/REL T9i, Shunyata Hydra. |
#5
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lol - glad it was a simple fix. you're certainly not the first to do this - our brain says left amp is left input!
So, how do you like it? |
#6
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Happens! Glad you solved the mystery with the help of our friendly and helpful forum members.
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#7
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I've often thought of adding a second MC275 to my system and am wondering if you notice a dramatic improvement in sound now that you are running two of them.
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McIntosh MC462, C22 IV, and MR7084; Simaudio Moon 300D V2 DAC; Technics SL1200G, Mac Mini Server; Sonus Faber Grand Piano Home; and Wireworld Cables. |
#8
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I’m sure we’ve all been there before with similar circumstances. I know I have.
Glad it all worked out for you.
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Paul Speakers: Von Schweikert VR-5 Anniversary MK II Front L/R, LCR-35 Center, VR-1 Rear L/R Sub: JL Audio F113 Amps: PS Audio BHK Signature 300 Mono, McIntosh MC207 Pre-Amp PS Audio BHK Signature and Gold Note PH-10 Phono Stage/PSU-10 Power Supply Turntable: VPI HR-X 12.7 TONEARM (2) and SDS, Stillpoints LPI Tape Deck Otari 5050B II2 Music Server: Aurender N100H Cartridges: Ortofon Cadenza Black, Lyra Helikon Mono Digital Source: Oppo UDP-205 DAC: Holo Audio Spring 3 KTE SSP: Marantz AV8801 Cables: Wireworld Electra 7 (P) Wireworld Silver Eclipse 7, Shunyata Delta NR (I) Wireworld Silver Eclipse 7 (S) Wireworld Platinum Starlight 7 (USB) AC Power Regeneration: PS Audio DirectStream P15 Power Plant and Shunyata Denali 6000s V2. |
#9
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Won't be the last time this happens
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“Life is what happens to you while you’re busy making other plans” |
#10
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Happy endings are GOOD!
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McIntosh MA8000; McIntosh MC1502; Canton Vento Reference 1 DC; E.A.T. E-Flat; Soundsmith Paua Mk II; Technics SL 1210 MK5; Audio Technica AT-150 MLX; Tascam BR-20; Teac X1000R; Pioneer RT-707; Oppo UDP 205; Denon DCD A-100; HP All-In-One Touchscreen Server; JRiver MC 28; Woo Audio WA6; Shure SRH 1840; SVS SB 1000; Jolida 502BRC; Jolida JD9; VPI 16.5 RCM; Wireworld Oasis 8 Speaker Cables; Audoquest Columbia 72 DBS IC's; Panamax PM-5400 (source components only) |
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