ramtubes
Responses from ramtubes
| Does anyone care to ask an amplifier designer a technical question? My door is open. @cardiff Here is one nobody seems to have asked yet...What is the role and importance of significantly upgraded power cords in component design? It seems to me that the PC is a fundamental part of the electronic device and that the manufacturer ... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. Here's a schematic of the ST-120 version (sans values for resistors and capacitors), which is apparently the same schematic as the ST-70 except for resistor sets.https://drive.google.com/open?id=1IMaAaaWRuIU8v-_OZ3jfrcQCI5a0gpP8 Nice circuit, ... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. @bifwynne Btw, I owe you two quads of KT-150s for matching. The 3rd party vendor from whom I purchase the tubes didn't match the tubes to ARC spec. Btw, I owe you two quads of KT-150s for matching. The 3rd party vendor from whom I purchase ... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. @prof So my question is: What exactly is happening to cause the type of sonic changes on hears when changing impedance settings for a cartridge?My know-nothing layman’s hunch is that it’s similar to how speaker impedance interacts with certain t... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. @andrew This has been a great and informative thread. Thank you for sharing your time, knowledge, and insight. I've learned a lot.A question for you: any further thoughts on ARC's M300 monoblocks? They're a fairly...unique design and perhaps the b... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. I said I was done in this thread and once again, I lied. I swear this question is in good faith and not meant to challenge or make a point. While looking over at Tungsol's website I saw this; Engineers and musicians have long debated the questio... | |
| Hi Fi Tuning Supreme fuse-Burn In? @rodman99999 btw: I’ve had HI-FI Tuning’s fuses(Gold and now Supremes) in my Cary monoblocks’ mains and B+ circuits, for over 12 years, without a problem. That’s not counting when the occasional tube took a crap and the fuse did it’s job. Then a... | |
| Hi Fi Tuning Supreme fuse-Burn In? Just to let everyone know, HI FI Tuning fuses cannot be used as tube fuses or in any DC application. They have very low breaking capacity and will and have damaged eqiupment. Their claims would make no sense and are an instult to a logical person.... | |
| Should I eliminate my preamp? @elf1 I have been using my Audio Research tube preamp and Bryston amp to drive Magnepan speakers for years. Recently I added a Oppo blue ray player to my system and connected directly to my amp using the balance cables. The reason was to elimin... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. @krelldreams What differentiates a passive “preamp” from a “tube buffer” with level and switching control? I really like the idea of a simple level control with switching capability, but as I stated earlier, my first try at using a passive, albei... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. @atmasphere Hi Ralph. Im curious if you use an inverse RIAA network to check your EQ. If so where did you get the values? I built mine from the advice of Peter Moncrieff, Mitch Cotter and Dick Sequerra who were the first to discover that many RIAA... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. @tomic601 ......so these A/Bcan describe some of the switch gear involved as a DIY project In essence one takes one or more relays and switches a single speaker (or pair) from one amplifier to the other. That is simple. However the output lev... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. @bdp24 @ramtubes, I finally got around to reading the review by Herb Reichert of the Cary SLI-100 in the December Stereophile. Damn, what a piece of junk! Cary specs the amp at 100w/ch from a pair of KT150 power tubes per channel; John Atkinson,... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. @cakyol I am therefore using 1800 VA toroidal and a 270 amp rectifier. Caps are 4 x 47,000 uF but s I mentioned, at 85 degrees C the caps are rated at 2000 hours. Therefore they are the weakest links in the amp. I saw some Nichicons with 105 degre... | |
| Does anyone care to ask an amplifier designer a technical question? My door is open. @jdjohn Any thoughts on kits like this modeled after the Dynaco ST-70? http://www.tubes4hifi.com/bob.htm#ST70 This isn't a mod or upgrade for stock ST70s, but a kit for building a brand-new amp. Some of the design changes are listed under 'S... |