kirkus
Responses from kirkus
| Tubes to Watts Ratio Also of note is the fact that the EL34 is a true pentode, rather than a "beam" or "kinkless" tetrode like the 6550, KT66, KT88, 6L6, etc.The EL34 thus has advantages over the 6550/KT88 pertaining specifically to pentode mode . . . including higher... | |
| Digital Software RIAA EQ for Vinyl Since I've actually been down this road before with design calculations and a prototype . . . here are some of the main issues you're likely to face:The main issue is that of headroom -- this is very critical when feeding an ADC because of its har... | |
| Digital Software RIAA EQ for Vinyl The RIAA time-constants (3180uS pole, 318uS zero, 75uS pole) are specifications that communicate exact magnitude AND phase behavior of the equalizer for any given frequency. Can't have one without the other.But there's a 40dB-ish magnitude differe... | |
| Help identifying Tuner noise The stereo decoder in the MR71 and MR67 (found in the slightly raised section on the front-left side of the chassis) is a bit prone to drift, and IIRC the symptoms you describe are exactly that of when the 38KC oscillator transformer is out of wha... | |
| RCA to XLR adapters? Mikey, I can relate to wanting to preserve the resale value . . . But having the correct termination for your application pretty much trumps all other cable-quality parameters. Also, the additional mechanical stress that Atmasphere noted from usin... | |
| Tubes to Watts Ratio 60 watts from a quad of EL34s in Ultralinear is a bit conservative, but not by a huge margin . . . I'd say that a "70-watt" rating of the Marantz 9 is probably the most typical of what's found in a high-quality hi-fi amp with this output stage.By ... | |
| How close to the real thing? Atmasphere, maybe I did miss your point, but I did re-read your post . . . and I think my quote was verbatim. But the logical problem remains -- I'll see if I can't address it first via Mapman's quote:Human ears (and brains)are complex sensors and... | |
| How close to the real thing? The system was entirely solid state. The format was a digital reel to reel, 1/2" wide. I really did not hear the system, it was only the experience of the music. So what would it have been like if it was 2" analog with my amps on each speaker? Hey... | |
| How close to the real thing? I think the most interesting aspect to the original poster's question is the fact that it forms the logical basis to objectively improve our art - that is, "Does it sound real?" is actually a falsifiable question. The answer is definitely highly d... | |
| How close to the real thing? This is incorrect. The Ampex 351 tape machine, used by both RCA and Mercury (and a host of others) has a zero-feedback recording circuit. Neumann microphones use small tube preamps which are zero feedback. I can go on but you get the point.Sorry A... | |
| need help on hooking up vintage preamp The C20 is a vintage preamp, and the MC60s are vintage mono amplifiers. They are definately not "from 10 years ago" . . . more like 50 years ago.But they both use conventional RCA connectors . . . if there's a problem with the fit with your cables... | |
| Did anyone use a Bang & Olufsen turntable w/ Mac? This is actually a classic combination - In the years I serviced high-end audio for a living, Mac and B&O together accounted for the majority of my business, and I knew many die-hard Mac owners and collectors that were equally passionate about... | |
| RCA to XLR adapters? I assume that is the architecture used in Ralph's designs. So the question becomes whether or not the input stage of all or at least most other "fully balanced" amps can be expected to have been designed in an equivalent manner. I don't know the a... | |
| Who is the KING of MONOS? Really, guys? Such silly chump-change power ratings in mere hundreds of watts. REAL audio-frequency power-amps are found as the modulators in plate-modulated AM/SSB transmitters. A modern solid-state example:http://www.contelec.com/SSM.html | |
| Wow and flutter Rega P7 and P9, anyone measure? Your number of 0.32% could maybe be defined as "short-term speed deviation" .... with "short-term" being defined by the Fluke meter's ballistics on the short limit and how long you looked at it as the long limit.But wow & flutter is measured v... |