#11
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Today my C-47 has arrived. First impression: promising and better than my C-37.
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Accuphase PS-1220, C-3900, 2 x A-75 (bridge mode), DP-750, T-1200, C-47, B&W 802 D4, Linn LP 12 Klimax, Kimber |
#12
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Hi!
My C47 is connected to E800 (XLR) and when the volume set up over -23 dB humming noise appear on the speakers (Devore O93). Both connected to PS530 and for the moment using the cheaps original power cord on three components. is it normal ? Any suggestion?... Thanks! Last edited by pwt01; 11-21-2020 at 11:45 PM. |
#13
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It should be perfectly quiet - my C37 is the quietest phono stage I have ever had (and I tried many).
Try disconnecting you turntable from the C47. With the C47 + E800 turned on is there any noise without the turntable. You might pick up noise in the turntable ICs or from the table. |
#14
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Quote:
I disconnected IC from the c47 and the noise still there over -23 dB... when I change load resistance the noise up (100 ohm) and down (10 ohm) ...any ideas? Last edited by pwt01; 11-22-2020 at 10:52 AM. |
#15
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Quote:
Some white noise would be normal at this loudness level. Hum should not be there. What do the level meters on the amp show - with my DAC30 card the second bar lights up when I cross the -18dB level. At -23dB I only hear a light white noise. I will connect up my C37 later this week again and try. René |
#16
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Quote:
I am interested in this equipment, please can you tell me if you are using balanced cable and what is the cable size? If you buy, I will use a 5mts long balanced cable! I currently have an Esoteric E-03 and an Audio Research PH7, zero noise, I am afraid to change and regret it because of the reported noise! Last edited by Nascimento; 11-27-2020 at 06:48 PM. |
#17
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Nascimiento... like restrock said it is a white noise at high volume setting...I will try to change the power cords...
BTW...C47 sound sublime! EDIT1: I believe is it a current problem...cause today white noise started to listen at -16dB....Im buying better cables for all components... Last edited by pwt01; 11-28-2020 at 11:01 AM. |
#18
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Thanks for the answer!
I currently have an Esoteric E-03, which works very well, without any noise, even being 5 meters from my pre amplifier! I'm afraid to change and have problems! |
#19
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NEW Accuphase c-47 phono preamp
The Accuphase is quieter than either Esoteric and Audio Research or any other phono stage I tried. What is described above occurs with the preamp turned up all the way up to maximum volume and would occur with any phono stage that has 70dB gain.
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#20
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My c-37 was dead quiet.
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