lewm
Responses from lewm
| Modwright PH 9.0X Tube Rolling Question Blisshifi, My bad. The prior post led me to believe that the unit uses only 6922. | |
| Modwright PH 9.0X Tube Rolling Question 6C45 is a single section triode. How did you manage to use them as a sub for 6922, a dual triode? Not to mention that the two types are electronically quite different even if you could mount two 6C45s to replace one 6922. | |
| Is there a strategy in preamp tube placement? I bought my wide variety of 6SN7s and 12SX7s back in the 80s and 90s. Thankfully, I am not in the market. I would agree that counterfeit 6SN7s would be easier to detect than counterfeit 9-pin miniature triodes, e.g., Telefunken, but there are man... | |
| Is there a strategy in preamp tube placement? These days I’d also be leery of counterfeits of tubes that are now 70 and more years old. The best sounding KRs are the black glass variant. You can’t see what you’re buying. | |
| MM, MC, or MI cartridge mglik, I am on the opposite side of your question. I own OEM versions of B&O MMC1 and MMC20CL. I also own Acutex LPM320STRIII which I've heard both in its headshell adapter and in the Acutex Saturn adapter, which is much lower mass than any h... | |
| Is there a strategy in preamp tube placement? There are many causes of noise from a vacuum tube and microphonics is only one of them. You can test for the other kinds prior to purchase but it is hard to predict whether a tube will be microphonic or not in your home system, because circuitry, ... | |
| Are You Happy With Your Phono Preamp? You'd need to see the schematic of one of these ARC pieces. It is possible to use RCA inputs into a balanced phono, and ARC may have done that on the premise that more than 90% of us end users will have RCAs at the ends of our phono cables. In th... | |
| Is there a strategy in preamp tube placement? With KenRad, I've had problems with microphonics that were not totally curable, even in my Atma-sphere MP1 where the tubes are entirely enclosed in the chassis and my MP1 is 22 feet away from my speakers with a couch in between. However, the prob... | |
| Low Frequency Rumble from TT between songs Tubes of certain types tend to be microphonic. For example, every 6SN7 is microphonic to some degree. The trick is to find those that are less microphonic than average, or better yet to move your amplifier around the room. In any case, it is no... | |
| Inner 1/3 of All Records Deep Obtrusive Rumble It’s not inconceivable that your 1200G is defective. Have you got a stethoscope? If so, place it against the plinth and listen for a noise above background. Or borrow another 1200G if your dealer is local. | |
| Low Frequency Rumble from TT between songs Some tube or tubes in your SE amplifier is/are microphonic. Tube damper(s) might help to reduce the magnitude of the noise to tolerable levels. | |
| Phono stage options - balanced with XLR both input and output... Hold it! I am on the side that says phono cartridges, except for a very few that use a common ground, ARE inherently balanced in the sense that they CAN deliver a balanced signal. Mijostyn, my point was that when used to deliver a balanced signal,... | |
| Is there a strategy in preamp tube placement? The only principle that holds water is to put your best tube in the gain stage. The last tube before the output jacks is almost always a cathode follower. Cathode follower does not add gain and therefore has little effect on SQ. Except the CF by i... | |
| MM, MC, or MI cartridge I owned a Colibri and liked it, but I like other of my cartridges better. Since vdH make a myriad of versions of each of their major lines, it’s quite possible I’d love some other vdH, maybe even a different version of Colibri, better. But I don’t... | |
| MM, MC, or MI cartridge The stylus of any MC cartridge is replaceable, by a skilled professional. I just had it done by Expert Stylus for my Koetsu Urushi. What others refer to as regards the differences in repair-ability of MM vs MC is that for MM cartridges, you can b... |