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Comment Re: Too long was always my gripe (Score 4, Insightful) 138

Pretty much. Some people are just too "tightly wrapped" for psychedelics. Rather than surrendering to the experience, they try to fight it and end up having a really bad time.

Control freak personalities in particular are prone to this. I can only imagine the scene if somebody dosed the White House water cooler these days....

Comment Tube amplifiers are PART of the instrument... (Score 3, Informative) 213

Musicians using tube amps makes sense, as the particular distortion of a pair of overdriven 6L6s is a huge part of the characteristic rock/blues "sound". The amplifier and it's distortion characteristics are an inherent part of the sound the player is trying to create.

For REPRODUCTION of recorded music, the ideal amplifier would be a "piece of wire with gain", adding or subtracting nothing from the original signal except to increase it in level to drive speakers or headphones. This is where the use of tube amplifiers (especially the ridiculous audiophool stuff using single ended triodes and no negative feedback) can only DETRACT from the signal as the musician intended it to be heard.

Tube amps are cool in their own right, and many of them are physically beautiful pieces of "functional artwork", but they are not "magical" by any means. It just happens that the particular type of odd-order harmonic distortion created by tubes happens to sound OK to many people. But it IS distortion, and technically is unwanted in REPRODUCING recorded content.

Comment Kodachrome isn't coming back... (Score 4, Informative) 213

Kodachrome will never come back because of the immense complexity of the K-14 developing process compared with E-6 or C-41. By the time Kodachrome was discontinued, there was only ONE lab that was still able to process it, and the required chemicals were discontinued by Kodak along with the film stock.

The automatic processing machines have all hit the scrapyards, and manual processing of Kodachrome was never done AFAIK, due to the extremely tight temperature and timing requirements.

Comment Metal tubes only use glass for the seals... (Score 1) 275

where the wires from the pins need to pass into the evacuated envelope. The rest of the vacuum-tight enclosure IS the metal can itself. The first metal tubes used tiny individual glass/metal eyelets for each pin, but later ones used a glass "button stem" that held all the lead-in wires in a single piece of glass.

Shortly after the metal tubes were introduced by RCA, some other manufacturers introduced the "MG" types, which were as you describe, a conventional glass tube covered with a metal can. This was done in an attempt to appear "cutting edge" with the then modern technology, but not wanting to invest in the specialized production machinery needed, and to avoid licensing the technology from RCA.

Comment Environmental regs had NOTHING to do with it (Score 1) 275

So can we skip the right-wing talking points, please? Tube manufacturing was certainly no more toxic than semiconductor fabs are (one of the most toxic industries around), and they aren't going away because of EPA regs.

US tube manufacturing died because the market for tubes went away VERY quickly once solid state devices took over in the late '60s/early '70s.

One example would be RCA, who introduced their first 100% solid state (except for the CRT) color TV sets in 1969, and closed their receiving tube plants (the largest in the US) by 1976.

With 15-20 tubes in a typical color TV set, there was a HUGE replacement market for receiving tubes and many US manufacturers each with several plants to meet the demand. Typically you would need to replace 2-3 tubes a year in a TV you used regularly. Self service tube testers (and replacement tubes) were found in drugstores and hardware stores for folks who wanted to try fixing their own sets.

Once tubes went away in new sets, the market for replacement tubes evaporated within a few years as the older tube sets hit the landfills. The relative handful of tubes still being sold were made in short runs from 1 or 2 US manufacturers who stuck it out until the '80s making a handful of types that still had some demand, but these quietly died by the early '90s, when the US military stopped supporting most of their tube-based gear and flooded the surplus market with warehouses full of unused tubes.

Tubes are still made in the US by a handful of manufacturers, but they are specialized devices used in high powered transmitters, radar, particle accelerators, and such. The ordinary receiving type tubes used in audio gear are largely made in the former Soviet bloc, which kept the remnants of their tube industry alive longer than the West did, preserving much of the manufacturing and raw materials infrastructure needed to serve the modern (much smaller) market for receiving tubes.

Comment Tubes are still made here in the US.... (Score 2) 275

But generally only the exotic special purpose and transmitting types. The commodity 12AX7s and 6L6s for guitar amps are all made offshore, due to the low profit margins. The only audio types being made in the US are Western Electric 300B triodes, which are still being made in limited numbers for the high-$$$ audiophool market.

http://www.westernelectric.com...

Other remaining US tube manufacturers include CPI/Eimac:

http://www.cpii.com/division.c...

and MU, Inc. :

http://www.mu-inc.com/webstore...

, who apparently hang on making small runs of tubes to support aging military gear...

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