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A Seven-Foot-Long Microphone

Above: the Electrovoice 643 super-directional microphone of 1961.  The 643 was apparently developed by the same engineer who created the wonderful Electrovoice RE-20.  Unlike the 643, the RE-20 is still in production, and still being used everyday around the world.  As far as the 643…well… it was supposedly used in the 1960s for Presidential news conferences, but I can’t imagine seeing something like this aimed at a head-of-state today.

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What is an audio engineer? c. 1961

From an AES journal circa 1961.  It’s interesting to see how the meaning of ‘audio engineer’ has shifted over the past half century.  An ‘Audio Engineer’ circa 1961 would almost certainly be called a ‘tech’ or a ‘broadcast engineer’ today, while the circa ’61 ‘audio technician’ would almost certainly be called an engineer or mixer today.  

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Here’s those EQs and Compressors you asked for. Now go F’ yrself.

Above: 12×3 Audiofax mixing desk circa 1961.

I was reading a 1961 AES journal when I came across this piece by Phillip Erhorn of Audiofax associates in which he details “New trends in stereo recording consoles.”  Erhorn will let you have your channel EQs and compressors, but only very begrudgingly.

Here’s Erhorn describing how he feels the trend for extensive channel EQ developed:

I mean, yeah, I agree, many condenser mics are hyped in the high end.  But why the hostility, buddy?  Oh and about all those channel compressors?

Remember what I said a few posts back about The Pre Rock Era?  How long did it take for our culture to shake off the idea that ‘verisimilitude to an actual acoustic event is the fundamental function of audio’?   I’ll remind you that in only about 3 years’ time, EMI staff engineers would be pushing their modded’ Altec compressors hard to get the sounds that helped create the Beatles’ success.  Oh the times they are a’changing.

Let’s get back to those swell-looking Audifax consoles tho…

Above, the same 12×3 desk, inside and out.  What a work of art this thing is! Someday. I . Will. Build. My. Own. Console.

Another Audiofax console. 

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I am going to take a bit of a left turn here. Not exactly like Jung’s Left Hand Path but…  Let’s get back to the hostility towards this new idea of audio-as-sound-modification-technology (as opposed to documentation-technology) that we read in the passages above.  Erhorn was/is obvs a very talented man who cared deeply about music or he would not have gained the skills/drive to construct the intricate pieces we see above.  So his views can’t just be written off.  Which begs the question:  If Erhorn’s views as an accomplished audio professional were, in 1961, slated for imminent obsolescence, then which of our current paradigms are headed for the dustbin? I don’t think the answer has anything to do with fidelity or even any particular kind of recording technology, necessarily.  In 1961, the history of audio trends was simply an upward vector.  Higher fidelity was ‘better.’  Frequency response and distortion % was always getting ‘better.’  Progress towards increased fidelity was the paradigm, and any deviation from this progress (such as the need to ‘EQ’ a mic to achieve a supposed marketing prerogative or the need to compress a loud, ‘music-less’ but sale-able band of youths) was bad, right?

Well, the ‘fidelity problem’ was pretty much solved by the late 1970s… the high-end of professional and consumer equipment available at that time is as close-to-perfect, in terms of sheer audio performance, as any user is likely to need.  Which is why the manufacturers turned towards the convenience problem instead.   This brought us the Walkman, the CD, and ultimately, the MP3.   So with the ‘fidelity problem’ solved, and all of our attention now collectively focused on the ‘convenience problem,’ we abandonded the paradigm of the upward vector of fidelity and instead enter an age of fidelity-trends.  High-fidelity sounds are in vogue for a while; and them low-fi and distorted sounds become popular.  We then tire of the low-fi and artists start making slick-sounding records again.  Etc., etc.  Now, there are real moments in the culture that precipitate each of these shifts, but the pattern seems likely to keep repeating.  The point is: neither hi-fi nor low-fi are going anywhere.  We now have a plurality of acceptable approaches to the generation of recorded musical performances.  So what’s to obselecse then?  Which viewpoint is about to become hopelessly outdated?

It’s my current feeling that the answer has something to do with copyright, ownership, and fair use.  Not fidelity, not any particular recording technology, but copyright and the idea of what kind of ‘use’ of existing recorded materials constitutes a valid new work.  I really get the sense from younger artists, as well as my students, that existing recordings — audio-masters made and paid for by other people — are fair game for use in their own productions: no credit or compensation necessary. Of course ‘sampling’ occurred in hip hop for ten years before rap artists had to start paying fees to use recognizable samples in their tracks, but I am more talking about the newer trend of simply lifting an obscure existing song, performing some tweaks on it, and calling it your own production.  And maybe it is!  Who is to say, really.  And that’s kind of the point I am trying to make.  If you are a young contemporary musician, what is the material that you work with?  What are the compositional elements that you are concerned with?  It is the notes E2 – E6 on an electric guitar?  Or is anything and everything that you can download for free from the internet?  If you want some concrete examples of the kind of music that I am talking about, check out this thread on Hipster Runoff.   If you are unfamiliar with HRO, the tone might take a little getting used-to, but the musical examples that the author presents are very valid.  Listen to the tracks.  Be aware that these are some of the most popular, most relevant rock-music acts in the world today.  And ask yrself:  how do you feel about this?  Can you accept the paradigm shift that is emerging?  Can you appreciate that this paradigm shift is taking place at the precise moment that the economic base of the century-old Recording Industry is almost fully collapsed?  And while you are pondering that, recall the Marxist relation between base and superstructure, this idea that economic conditions necessarily construct cultural conditions?

Here’s those free music-production apps you asked for.  Now go… make some music.

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The Norelco/Phillips EL 6911 Studio Echo Machine c.1961

Good lord take a look at this thing.  The Phillips EL 6911 echo machine.  Distributed in the US by Norelco, who also distro’d AKG mics in the 1960s.  You can find much more information on this monster at this website.  These still turn up on eBay from time to time. 

 

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Audio Manipulation Technologies c. 1956: Radio SFX

From Radio And Television News, 2/56: a short article concerning the creation of sound effects for use in radio commercials, AKA., radio ‘spots.’  The focus here is on creating special-effects (pitch shifting, echo, filter effects, etc) through direct physical manipulation of the tape-recorder (as opposed to utilizing additional outboard equipment).

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The Tascam Series 40 tape machines of the 1980s

Download the complete twelve-page Tascam Series 40 catalog, c. 1984:

DOWNLOAD: Tascam40series1984

Products covered, with extensive text, specs, and photos, include: Tascam 42 1/4″ stereo tape machine, Tascam 44 four-track 1/4″ tape machine, and Tascam 48 1/2″ eight-track tape machine.

above: Tascam’s various data recorders of the early eighties. 21-track 1/2″ anyone?

Tascam helped create the category of ‘home-recording-studio’ in the 1970s with their 4-track reel to reel machines.  The 3440, Teac 3340, and Tascam 40-4 and 80-8 tape machines were the backbone of thousands of home studios and project studios.  This line-up was improved in the 1980s with the introduction of the Series 40.  The Tascam 42, 44, and 48 tape machines offered better performance than the older models, plus standard features such as balanced i/o, varispeed, and confidence monitoring (IE, they are all three-head decks).  The battleship-grey finish of the series 40 lets you know that these are commercial/industrial machines, and the 70/80 lb weight reinforces that idea.   (N.B. – Tascam also offered a series 50 with even better specs; i have no direct experience with these machines tho…)

The Tascam 48

Many years ago I inherited a couple dozen pro reel-to-reel machines from a media company that had updated to DAT.  Otari 50/50s, Tascam 22s and 32s, Technics 1500s, etc…  The best unit of the bunch was a Tascam 44.   The operational characteristics and sonics of that machine were incredible.  It is long gone now, like all the others, sacrificed to pay-the-rent in late 90’s Williamsburg.   It’s one of the few studio pieces that I really regret selling.  I don’t think I would ever go back to analog tape as a working production format, but as an effect of sorts analog tape has a quality that nothing else can deliver.  Just yesterday I was in the studio with E’s Marantz dual-cassette deck, bouncing some submixes onto a Type 1 Sony cassette and then back into Pro Tools, trying to get just the right amount of high and low end breakup.  I got it right after about ten attempts with different level settings.  A three-head machine would have been very useful in that situation… especially one with varispeed.

Anyone still using a Tascam 44 or 48 for music production?  Drop a line and let us know…

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The Williamson Amp, part one

The original Williamson hi-fi amplifier schematic as published in “Wireless World” magazine (UK) May 1947.  

The Williamson amplifier is considered one of the earliest hi-fidelity audio amplifier designs.  It is certainly one of the most popular audio circuits ever developed for DIY’rs.  Without fail I seem to turn up at least one home-brewed Williamson every year at the local estates+fleas.  A PS Dot Com reader from the UK sent us the original articles from “Wireless World” as published in 1947.   I have yet to build a pair of these myself, and the idea of starting ‘from the top,’ as it were, with the original design, is appealing.  A few things to note: check out the provision to balance the driver stage, and separate bias level and balance controls for the output stage.  Also: check out R25: the formula for determining the feedback loop resistor.  I wish every schematic included this notation.   NB: the ‘L63’ valve is simply a 6J5 – aka, one half of a 6SN7.  the ‘U52’ rectifier is a 5U4 or equivalent.  ‘KT66’ is a better-performing 6L6; feel free to use 6L6 or 5881 if necessary.

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Christmas 2011

Despite the hectic nature of the holiday-season, I am inevitably able to produce one piece each year as a gift for some person or persons near+dear to me.  This year’s recipient of the prize-winning entry in Connecticut’s Got Free Time! will receive this charming set.

I’d been thinking a bit about V. Gallo’s comment in Sound Practices #1…  see the previous post for the full details…  basically, the idea that ‘good hi-fi should sound like the best radio you’ve ever heard’ (as opposed to some supposed verisimilitude to an actual acoustic event).  Well, here’s an attempt at the best-sounding radio you’ve ever heard.   At the front end, two RCA inputs mix via fixed resistors to a single 100K pot, and then onto the grid of the voltage amplifer stage (6J5, the ‘single’ triode iteration of the more common 6SN7); this feeds one 6V6 via a gigantic paper coupling cap; in the power supply, a 5Y3 rectifier and R/C filtering with large (50uf) caps and an extra filtering stage before the output transformer for a n extremely quiet, stable signal.  The circuit is very similar to what you would find on the back-end of most transformer-mains-isolated AM/FM tube radios of the 40s and 50s.

The speaker is a 1950’s extension speaker, maker unknown; it has extremely nice finish work and detail; it is unusual in that both the front and back of the enclosure are open via grille clothe, creating a ‘bright’ and ‘dull’ side; position the speaker as-you-like for a very unconventional tone control!

The cabinet is 1×3 solid cherry with internal bracing.  Keeping with the ‘best-radio’ theme, the tubes, transformers, and brown Bakelite sockets are pulls from various Ancient Radios that have wandered into the shop over the years.  And yea it sounds great…

 

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Sound Practices Zine Archive Available on CDR

I was checking out this bro’s blog (or bros’ blog? lots of chick pics) recently and I came across an endorsement of the PDF version of Sound Practices magazine.  I had never seen an actual issue of Sound Practices (it ceased publication a couple of years before I built my first tube amp), but I had read a few articles that had been put online, and I had encountered much discussion of it in various online chat groups.  Seemed worth taking a look at.  I purchased a $30 (delivered) CDR containing all sixteen issues as a giant PDF from eBay seller n5Kat.  Not cheap, but all this scanning does take some time, plus the PDF has some useful navigation features built in.

Anyhow…  it arrived and $30 well spent.  You can see a list of some of the various articles contained within at this link.   Sound Practices is aimed squarely at enthusiasts of vintage hi-fi, experiementers, and hobbyist builders, rather than the much more electrical-engineering-oriented Audio Amateur/Audio Electronics, another publication from the same period which frankly tends to confuse me half the time.  Let’s put it this way,,,  there’s not a lot of math in Sound Practices.

So what’s the point.  If you’ve read this far in this post, you are likely one of my regular readers, and if you managed to make it back several times to this fairly niche website, I am pretty sure you would dig Sound Practices.  Still available for $30, world-wide shipping included, on eBay.

On a closing note… an unexpected bonus for me was discovering that one of my favorite writers on the subject of vintage audio-gear was a regular contributor.  I refer to one Vincent Gallo.   I’ll end with a bit from his first piece in the zine, surprisingly free from the (albeit hilarious) hostility that usually marks his writing:  what follows truly gets to the heart of why-antique-audio-equipment-matters, as well as a fundamental relationship between sound on the one hand and audio on the other:

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The BRDCSTR

Above: The BRDCSTR, a two-stage vacuum-tube microphone preamp inspired by classic 1940s broadcast audio preamps.  Single-ended design with a 6SJ7 and 6J7 tubes, massive output transformer, and only one capacitor in the signal path.  I have built more of these than any other design; people really seem to respond to the sound.  It’s pretty much the least ‘stuff’ that you can put between a microphone and your A/D convertor.  All the attitude of ancient tube studio equipment without the hum and the noise, and with much better frequency response.