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#52
09-23-2011, 09:18 AM
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Jérôme.......No problem. I would have stirred the thread back on topic if I needed more information. Your turntable discussion with Philippe would have made a nice thread on its own, though. Burying a second interesting discussion in an alternately titled thread makes it difficult for others to find it and join in.
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Dan  STUDIO - McIntosh C1000C/P, MC2301 (2), MR88, Aurender N10, Esoteric K-01X, Shunyata Sigma spdif digital cable, Sonos Connect, PurePower 2000, Stillpoints, Furutech Flux 50, Michell Gyro SE, Michell HR Power Supply, SME 309, Ortofon Cadenza Black, Wireworld, Sonus faber Amati Anniversario LIVING ROOM - McIntosh C2300, MC75 (2), MR85, Magnum Dynalab 205, Simaudio MOON Neo 260D-T, Schiit Audio Yggdrasil, Aurender N100H, Shunyata Sigma USB cable, Micro Seiki DD40, Ortofon Cadenza Blue, Nakamichi BX-300, Sony 60ES DAT, PS Audio P10, Furutech Flux 50, Sonos Connect, Stillpoints, Wireworld, Kimber, PMC EB1i, JL Audio f113 VINTAGE - McIntosh MA230, Tandberg 3011A tuner, Olive 04HD, Sony DTC-59ES DAT, McIntosh 4300V, JBL 4312A Last edited by jdandy; 09-23-2011 at 09:20 AM. 
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#53
09-23-2011, 09:27 AM
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Quote:
I will post a separate thread on this.
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There are two means of refuge from the miseries of life: music and cats Albert Schweitzer
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#54
12-27-2011, 03:57 PM
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Well, I have an on topic question and hope for some response...
I have a mid production of the ARC PH-7 (2008), and considering the PSU upgrade (replacing two 6H30 with one 5881). Is this a good value for money upgrade, or..? Anyone with experiance on this matter? Thanks, Sven
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#55
12-27-2011, 04:33 PM
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Sven.......Welcome to Audio Aficionado.
 I can't help you with your question, but there are a number of Audio Research owners here, so hopefully someone will jump in with a helpful comment.
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Dan STUDIO - McIntosh C1000C/P, MC2301 (2), MR88, Aurender N10, Esoteric K-01X, Shunyata Sigma spdif digital cable, Sonos Connect, PurePower 2000, Stillpoints, Furutech Flux 50, Michell Gyro SE, Michell HR Power Supply, SME 309, Ortofon Cadenza Black, Wireworld, Sonus faber Amati Anniversario LIVING ROOM - McIntosh C2300, MC75 (2), MR85, Magnum Dynalab 205, Simaudio MOON Neo 260D-T, Schiit Audio Yggdrasil, Aurender N100H, Shunyata Sigma USB cable, Micro Seiki DD40, Ortofon Cadenza Blue, Nakamichi BX-300, Sony 60ES DAT, PS Audio P10, Furutech Flux 50, Sonos Connect, Stillpoints, Wireworld, Kimber, PMC EB1i, JL Audio f113 VINTAGE - McIntosh MA230, Tandberg 3011A tuner, Olive 04HD, Sony DTC-59ES DAT, McIntosh 4300V, JBL 4312A
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#56
01-06-2012, 08:43 AM
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Sven, it's not a matter of whether the psu upgrade is good value, but rather its a mandatory upgrade to avoid premature failure of the 6h30 power supply tubes. It seems that the 6h30 is not up to the task of power supply regulation on a long term basis and they will fail earlier than their normal lifespan. The 5881 replacement is a robust tube and more up to the task of voltage regulation. In my ref cd 7, two 6h30 power supply tubes failed taking with it a couple of diodes.
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