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Technical Info & Troubleshooting Learn from the Pro's |
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#11
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Just to add my personal experience, my new Ma252 is dead silent, ear to speakers, with a silent test track playing 100% volume. I will keep an eye on it for this hum.
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Living Room Audio research LS28SE preamplifier, Aurender N10 Streamer, Topping D90 DAC, McIntosh MC462 amplifier. Focal Sopra 3 speakers. Salamander Archetype rack, Symposium Acoustics Segue shelves, Silver Eclipse 7 XLRs, Shunyata Everest power conditioner, Alpha V2, Delta V2 and Venom V2 10/12 power cords, and Audioquest Oak speaker cables. GIK Acoustic's bass soffits and 244 bass trap Art panels room treatments. Sony XBR75X900e 4K TV and Sony UBP-X800 Blu-ray player |
#12
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If you own an MA252 and like everything but the hum, try rolling in a set of Gold Lion tubes that have been tested by the seller (Tube Depot, whomever). Would not be the first time an OEM provided a noisy set of tubes to their customers.
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Glenn... Canton Reference 9 Clearaudio SM Pro Focal Bathys JLA 10" Dominion Kuzma Stabi S w/MC & MM Magnepan 1,7i McIntosh MA8950 & MR88 Oppo 203 Roon Nucleus Rose Hifi RS150B Shunyata Gemini-4 Sony ST-A6B, TA-F6B, ST-J75 & PS-X75 Sorane SA1.2 & TA-1L Stillpoints LP1v2 WW Pt, Au & Ag |
#13
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I emailed McIntosh about this.Their answer is that it is to be expected with tubes running the pre amp functions....anyway I have this in my system but you have to place your ear within a centimeter of the active speaker drivers.
Gabe |
#14
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Speaker humming from a new Mcintosh MA252
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Just had tube issue, significant hum and fizz. Replaced my Tubes and audioquest interconnects and PS Audio AC3 Power cable. Now back to velvet blackness. |
#15
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I also have buzzing MA252.... Speakers emit 60Hz buzz even when volume is set to 0%.
Moving volume to 100% just adds extra low "Shhh", but the buzz is still there... I have Panamax M5300 to filter AC noise and Emotiva CMX-2 to block possible DC.. Still buzz... Not very loud, you have to be within 1-2 feet from speakers to hear it, but it is there..always... |
#16
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I feel bad for the members who trusted the brand and then have to put up with that annoyance. If it were me, I would have sent the unit back ASAP and demanded either a non-buzzing unit or a refund.
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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) Last edited by FreddieFerric; 03-05-2019 at 11:24 AM. |
#17
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Had the hum/buzz issue last June with new MC452, Non-Tube. Took it back to dealer and ordered a new MC462. The MC462 was dead after 3 weeks of use. Exchanged for another new MC462. This one has been working well since October 2018. |
#18
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Just incredible! What's happening to this company? Not good, no matter how they try to spin it.
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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) |
#19
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It is a great question. Do not know what is going on. I remember hearing that it was maybe a ‘bad batch’ of parts, but QC does come to mind. |
#20
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Any update on this? I just bought an amp with identical issue. About to change tubes to see if that corrects hum.
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