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Everything posted by RobertR

  1. Back more on topic, I would add that the amp in question is a pretty easy recap job - not too many electrolytics in the TFM-15 - so if you want to get into this game it's a good model to cut your teeth on. Be aware that there is one cap in each channel that is 'non-polarized' - be sure to replace it with that type. All the others must be installed with the correct polarity, or you're screwed, just as with a car battery. I'd put the two big filter caps in first; they are needed for sure. Then try her out. Then maybe do a few more, mirroring in the second channel what you replace in the first, and try her again. Then some more, and test, etc. This way, if it doesn't work right at some point, you have a much smaller area to go back and recheck. If the intermittent problem persists, you will have to deal with that, but you won't have wasted any time, because she needed a recap anyhow. RobertR
  2. Hi kve. I've been offline quite a while - too long, but now back on, at least for the next few months. Reminder to you and to all: the “Receiver 2000” is actually model MXR-180, even though it doesn't say so on it anywhere. Great tuner, too – little need for a TX-anything with this unit in your system. BTW, speaking of the CT-17, I have one for sale with remote and manual, working like new, with power supplies recapped. Anybody interested, PM me. RobertR
  3. I could write about the erosion of the English language full-time, but it's no use. Those who are heard in the media are no longer properly educated, and they just copy each other's mistakes. It seems that their editors don't know or don't care, and now a whole generation copies their sort of garbage, schoolteachers included. Therefore, we are treated (on a daily basis) to sentences such as, "A force of 500 soldiers were sent to quell the uprising". It has reached the point that if you say it correctly, someone will 'correct' you. The misuse of the word 'probable' is rampant, and hilarious ("The police have arrested a probable suspect"). Another example of a favorite is phrase is "multiple persons were injured" (still waiting to see a picture of a 'multiple person'). Every answer or comment now seems to require that it be prefaced by the meaningless word "So...' And every problem now has become an "issue". SO, I've reached the point where I like hope they all like die without issue, know'm sayn'? RobertR
  4. While you all are fiddling with appellations, does anybody remember what the definition of an Audiophobe was, in The $ensible Sound? T$S is now defunct, but I suspect that many 'phobes live on...
  5. News reporting has long since become a corporate money maker, at a number of levels. They used to see us as citizens; now we are treated as consumers. Even PBS takes corporate money now, after their public funding was cut off in the 80's. There are a few non-corporate, non-profit news outlets, but you have to seek them out; their coverage is limited, and largely ignored. That's the way the 1% wants it, and they hardly ever fail to get what they want. RR
  6. Hi Bill, I don't have a TFM-15 for parts - I use mine on a bi-amped system in a very small room, and it works great. Recapped it a couple of years ago - easy job, few caps. Anyhow, both my meters are no good - they sat in a humid environment for a few years, and now they stick - one a lot worse than the other. Is that what's going on with yours? You can always switch them (or their wires) to assure that the amp is providing the proper output to each meter. What I'm suggesting is that a replacement meter might not be the final answer, if my experience is typical. At some point I will try to free mine up, and maybe lubricate them with a microdrop of the right oil. if I learn that it's possible I'll try to describe the procedure. RobertR
  7. I always specify no peanuts/popcorn. Even if the amp survives the trip, the tiniest bits of that crap get everywhere; a real mess. And they certainly can't do those meter movements any good.
  8. Ray - Have you tried them about half that far apart, but with SH? Huge! RobertR
  9. Have a CT-17 in my scrap heap, but the button is gone - guess you''re not the first to wear one out. Can always turn it on via the remote control, of course.
  10. What constitutes a personal attack can depend largely on one's personal point of view. This reminds me of several scenes in the Godfather trilogy, where they machine gun or garrotte somebody, and then always say “It's just business. Nothing personal.'' For the guy who gets whacked, however much he deserved it, it's very personal. So, maybe the original post amounts to a personal attack, even if the intent was, as I'm sure, to inform and alert members about a longstanding situation that not everybody here now knows about. But maybe a bit of personal attack was just what was called for in this situation. Nobody made the guy do shoddy work, buy cheap parts, try to profit off the innovation of others, not correct failures... Decorum becomes excessive when it suppresses historical reality. RobertR
  11. Yeah, Trav - the directions I wrote were useless for those plugs, as the writing was done before I ever saw the plugs. The key solution was to use the smaller alternate plug, the one that was included but not already in place. Even that one was a damn tight fit, but once done they worked very well. They proved how well when they managed to conduct enough wattage to melt the drivers in the famous suicide test at Cabin 7... RR
  12. When shown the M-1.0t MkII, Bob was only interested in the details of the mod - what was done, how much power was gained, how reliable it had proved to be, etc. He had nothing negative to say about it, and not the slightest thought of infringement. And Bob is a guy who has suffered a lot of infringement, and sued a few people about it. RR
  13. Interested, if I can scrape up the dough by Fest time. You didn't happen to save the little xlr plugs, did you? RobertR
  14. Looks like a lot of fun, but what the WAF factor?
  15. My favorite way to do fuses is to solder in a 'pigtail' type. Not convenient to change, and they cost more, but no question about contact. And in normal use I don't think I've blown more than a couple of fuses in almost 60 years. Well, except when working on something that's already ailing - then I solder in a little fuseholder and use the everyday fuses, until the danger is past. RR
  16. Dielectric grease is engineered to be non-conductive. Non-equivalent analogy. There is no point to such arguments as this, except to remind people that not everybody agrees with all the hyped snake oil; some of us are from Missouri, and don't want to see such claims accepted as fact until there is some tangible proof, not just anticipation bias-based claims. RR
  17. Regarding the Green Ink Farce: Don't forget, there was (as always) a pseudo-scientific explanation given for why it was needed, and how it 'worked'. It seems that there is a lot of stray red laser light kicking around in a CD player, causing problems with the pickup; you know - interference, or whatever. So the green ink, being the complimentary color, will absorb all that nasty old red - problem solved! Then, as the hoax developed, it became mandatory to buy just special (and more expensive) green pens - the ones in which the color was specifically engineered to be precisely the right frequency to gobble up all those red culprits. If people still use these pens, it's no great surprise - humans don't change much. I read about biased listening all the time, right here. Somebody is doing an 'upgrade', and before they even get the material delivered, they are talking about how much better it will sound. Then the job is done, and guess what? It sounds just like they 'knew' it would; that new line cord was just the tweak the ol' amp needed! Test equipment can show changes that your ears will never reliably detect, e.g. in frequency response. But of course one of the favorite promises is a better "sound-field". Or the stuff about warmups, break-in periods, etc. - all things not really measurable. I never pay much attention to any claims that are based in biased listening. If listeners first claim to hear something, but then can't distinguish it A-B-X, It's - Just - Not - There. RR
  18. I would hardly classify this as Way Offscale. It is central, pivotal, seminal to understanding a basic human flaw, and how it affects this entire hobby. As I have written lately, and not so lately - Anticipation Bias is extremely powerful, and present in all of us. This is just another example of the results of letting it go wild. Audiophiles, or the Golden Ear crowd, or whatever you choose to call them, don't have any better hearing than anybody. They just have far more creative imaginations. RobertR
  19. Those cabinets were from the factory, and not uncommon. Remember, that model was the best selling Phase Linear model ever. The drawback with the PL1000 wasn't looks, it was that it had unusual dimensions, and thus didn't stack well with all the usual 19" stuff. The wooden case just makes that problem a bit worse.
  20. "Carversite is dedicated to Bob Carver and his many audio contributions" Really? Then why is this thread not removed? What has changed here? Is this now a place for the repetition of endless arguments about political wedge issues, things that have precisely nothing to do with audio? If I want those arguments, they are not hard to find elsewhere. And if I want to see how safe 300 million guns are making America, I can look at the day's headlines, anytime. RobertR
  21. Barryg - The kit amps will be different physically, for sure. There is to be a pcb, for one thing - Bob is just getting started on the mechanical engineering at this point; he has a ME helping him with that. As to circuit differences, knowing Bob there will have been at least some minor changes; with him, change is ongoing, perpetual. RR
  22. When Bob first talked to me about this amp he said it put out about 35 watts with 6L6's, and twice that with KT-88's. And with KT-120's around 105w. After he got around to trying it with the 150's he said those added some more power, though not really enough to bother about, especially considering the price of those tubes. But anybody can try them if they like; Bob would probably order them for those willing to spend the difference, and his cost for tubes is a good deal lower than for most of us. Bob is an engineer. Remember what engineering involves – creating something that's the best that can be built AT A PRICE. Consider the absurdity of a push gasoline lawnmower with dual 4-barrel carbs. An engineer's nightmare - total waste. And it would be poor engineering if Bob's chosen transformers, for example, were so oversized that they could support another pair or two of output tubes. Ideally every component reaches it's limit at about the same power level – that's good engineering. RobertR
  23. Right - the noise machine! It's an idea I've had for several decades. When CDs hit the market, there was always the complaint from the anti-digital faction that "something is missing" in digital recordings. Right - tape hiss! They were so used to it that they associated it with ambiance and high frequencies. And analogue masters were considered to be superior to the new digital ones, of course, for the same reason. Now, who will market a sophisticated, costly surface noise and rumble generator for the LP lovers? RobertR
  24. No, Z, it's the same document. You have to look very carefully for the subtle details. The schematic is for the 760, but shows asterisks on the extra output transistors, and associated resistors, plus a full-length heat sink, all of which are omitted on the 500/753 models. So same boards, but those in the less powerful versions are not fully populated. The 753 is nearly identical to the 500, but of course has one more amp channel board, and all that goes with that: another meter, another set of parts on the mother board in front where the amp boards plug in. I suspect also a different power transformer, capable of higher wattage. And for the 760, I'd guess higher voltage secondaries, as well. I haven't looked at it for a while, but I think if you check the parts lists you will find a few references to the 753, where there are differences. Maybe a 753 face-plate with three meter holes, etc. The manual issue was a pretty sloppy rush job, it seems, done on the cheap. Probably relates to the fact that the company was on it's way to going belly-up. Sad, because these are really good amps. Wish somebody knew what the bias setting specs were... RR
  25. A-500x, A-753x, and A-760x all covered in the same manual. It's very thin on information - schematic and parts lists only. RR
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