lewm
Responses from lewm
| Tube PHONO preamp interference - RFI, EMI, bad grounding? Probably you're wrong on both counts, but we shall see, if the OP keeps us posted. | |
| Tube PHONO preamp interference - RFI, EMI, bad grounding? Whoa! It is way premature to ditch the preamp, which is a well respected product from an established company. And this problem is not typical of the unit. | |
| Michael Fremer leaves Analog Planet Yes, he was a founding father of New York Audio Labs but so far as I know not really an audio engineer. He delegated that job to good people. | |
| Tube PHONO preamp interference - RFI, EMI, bad grounding? Can be through the air, through the AC line, or through some component. Do any of your components have a switching power supply? Is this phono stage electrically isolated from the turntable motor? TT motors put shmutz back on the AC line, and i... | |
| Solid state or Tubes preamp phono stage. But the 12BH7 will sound better, by all accounts (see TubeDIY Asylum). I haven't tried that type myself. Now, if the 12AU7 is being used as a cathode follower, then it does not do so much sonic damage and can probably be tolerated as is. In my ow... | |
| Solid state or Tubes preamp phono stage. I agree with Mulveling. 12BH7 is another tube type that is said to be a good sub for the 12AU7, which is to say, an upgrade. Yogiboy said "5914, 5963,6189 and ECC82 are all replacements for the 12AU7 tube". ECC82 is definitely only a 12AU7 by an... | |
| Tube PHONO preamp interference - RFI, EMI, bad grounding? One more thing: dimmers. Are there any dimmers on the same circuit with your phono stage? And by burglar alarm, I meant the modern type that work through a wifi connection. | |
| Tube PHONO preamp interference - RFI, EMI, bad grounding? Have you tried different electrical outlets in your home? What else shares the circuit that serves your audio system? Any fluorescents or LED lights in the vicinity? Any burglar alarms? | |
| Empire EDR9 cart into Lehmann Audio Decade phono preamp, sounds awful Forget about it. You learned something even in the midst of the criticism. You might benefit from reading some of the various books or papers that will enlighten you further. None of us knows all there is to know on the subject. Meantime, I hop... | |
| Cartridge Loading.....Part II To satisfy my curiosity and because life is short, I purchased a BMC MCCI Signature ULN. This unit has gain settings of 0, +7, +11, and +14db. My question to anyone is what is the meaning of these db values? At the 0db setting, the unit produces q... | |
| Solid state or Tubes preamp phono stage. Isn’t 5814 a 12AU7 by another name? Anyway, sorry for being so dogmatic but there are actual data to support my view. | |
| How best to eliminate LP warps Hi Nikola. Today is the first day I’ve looked at this thread in at least a month. I’m not sure what you’re getting at, but it’s nice to hear from you. I am meeting many young Serbs who live and work in the Washington DC area. | |
| Solid state or Tubes preamp phono stage. The best 12AU7 is no 12AU7. Replace them with 12FQ7/6FQ7 (depending upon the filament voltage supplied to the socket) or with 6CG7 (which requires a minor re-wiring of the socket for the filament supply only and requires a 6.3V filament supply). ... | |
| MM or HO MC Cartridge Choice-Input Please I don't know who the mystery rich guy is in Pindac's post, but he is entitled to his opinion of HOMC cartridges. I disagree. One caveat: some manufacturer's make the same cartridge in very low output and slightly low output versions. For exampl... | |
| Solid state or Tubes preamp phono stage. The point remains; each of us has to spend the time listening to a variety of components in order to figure out for onesself what constitutes audio Nirvana. A bunch of opinions from strangers might provide an idea where to start, at best. Sometim... |