Electro-Voice Model 664 cardioid powerful microphone Description and Applications The Electro-Voice Design 664 is a cardioid microphone of the dynamic kind with just one relocating component. It is definitely designed particularly for public address applications. The cardioid design is attained through make use of of three sound entrances located in the back of the diá­phragm. These thrée sound entrances, each utilizing the appropriate acoustical impedance, mix to form one effective back entry which differs in length from the diáphragm inversely with rate of recurrence.

1. Electro Voice Serial Number
2. Electro Voice Microphone Serial Numbers

If anybody is interested, I dug out the Ampeg serial number dating code for Ampeg and Crate gear manufactured during the Saint Louis Music years.

The ending stage and amplitude conditions create a standard cardioid design over a wide frequency range. This variable front-to-back length along with dynamic-type design affords higher level of resistance to mechanised surprise and eliminates proximity effect. The Model 664 will be an all-purpose general public address mike made to accomplish needs of wide-range reproduction under a excellent variety of situations. Because of its outstanding and uniform polar response, it will be especially helpful in locations where traditional acoustic feedback, normal noise, and severe reverberation exist. The favored instrument for serious house and semi-professional recording, the 664 can be furthermore an perfect option for high quality sound reinforcement systems, especially where acoustic problems can be found.

It can be outfitted with a pop-proof wire mesh grille which minimizes blowing wind and breath blasts. The Model 664 may be utilized on a floor or desk take a position or transported in the hand. This all-purpose mike features the unique Electro-Voice AcoustaIloy® diaphragm. The nón-metallic diaphragm enables smooth response over a broad frequency range and withstands higher humidity, heat extremes, serious mechanical shocks, and the corrosive effects of sodium air flow. It can be practically indestructible with normal use. Specifications.

Generating component: Dynamic. Frequency response: Even from 60 to 15,000 Hz. Observe Amount 1. Impedance: 150 ohm and high impedance. 150-ohm impedance can be well balanced to surface.

• Find great deals on eBay for electrovoice patrician. Electro Voice Patrician 800 1961 consecutive Serial numbers 30 Inch Woofers.
• A Super Echo Twin with serial number 404553 was made in 1964 (4), during April (04) and may have been the 553th amp made that month (553). Caution is needed for dating amps from 1953, 1954, 1955, and 1960. The serial numbers from these years were duplicated in 1963, 1964, 1965, and 1965, respectively.

Microphone is usually wired for higher impedance unless 150 ohm is certainly requested. Impedance Choice: Selection is made at cable plug. To alter from higher to 150-ohm impedance, shift white business lead at port 2 to airport terminal 3. See Figure A new. Output Level: 150 ohm, -58 dB, EIA level of sensitivity ranking, -149 dB.

Electro Voice Serial Number

Great Impedance, -58 dB, EIA awareness ranking, -151 dB. Polar Pattern: Cardioid, even front-to-back splendour. See Amount 2. Diaphragm: Electro-Voice Acoustalloy®. Case: Pressure-cast zinc. Surface finish: Satin Stainless (available in non-reflecting grey as Design 664A or in decorative magic as Model 664G. Measurements: Diameter: 1 7⁄ 8', optimum.

Duration: 7 3⁄ 16', not really like stud. Find Figure 3. World wide web Weight: 1 pound., 12 oz., without cable connection. Wire: 15 foot. Two-conductor, protected, synthetic rubber jacketed, put out type, outfitted with Design QC-4Meters Electro-Voice Quick-Change Connector. Stand up Coupler: 5⁄ 8'-27 thread on stud. Optional Components: Model 419 Desk Stand up.

“IMPEDANCE Adjustments Are usually MADE ON Wire PLUG. Put Covering AND Zero. 1 CONTACT Are usually GROUNDED. 2 HIZ.” (high impedance setting) “CONTACTS NO. 3 AND 4 150 Ω.” Text and drawings above are from Electro-Voice System Data, Model 664 Cardioid Mike, Part Zero.

533180, Sept, 1966, generously offered by Mr. Ethan Wetzell, Electro-Voice Techie Services. Site owner's notice: At 1st I had been worried that the Electro-Voice Design 664 would crack with tradition on this site, since all various other microphones noticed on these webpages were used or are still getting used at put out amenities and songs recording galleries. The 664 does not fit these categories. But after talking with Mr.

Ethan Wetzell óf thé E-V Techie Services employees, I chose to produce this page for the 664. Wetzell's i9000 much-appreciated discourse is quoted immediately below: Individually, I wouldn't think about the 664 a “studio mic;” it has been really designed and used for PA applications (although what quaIifies as a “studió mic” is usually very subjective). Simply because much as transmission programs, they weren't broadly used for radio stations, but were relatively well-known with hams. Right now, that mentioned, the 664 is definitely the vintage Electro-Voicé mic that l most likely get the nearly all queries about. I'michael not sure if that'h simply because of the volume that are floating about, the way it sounds, or the look of it, but we send out out more 664 data sheets than simply about any other vintage mike. These also have got a tendency to switch up in contemporary pop lifestyle. It appears that at almost any stage, I can convert on VH1 ór MTV and notice these in some music movie (almost all lately, I saw one becoming utilized in a movie for the music group Switchfoot).

On their last tour ZZ Best utilized 664s that acquired happen to be retrofitted with RE510 capsules (they also used them during the Rock and roll and Roll Corridor of Fame induction special that shown on VH1). In these situations, the appeal is obviously cosmetic, and those (and comparable) makes use of may end up being one of the issues that nevertheless pushes their reputation. Because of aIl this, I wouId discover their existence on your site appropriate. Actually though they wear't very “fit” with the transmission or studio idea of your web site, they had been, and keep on to end up being, a very significant tiny­phone in history. Truly, Ethan Wetzell Electro-Voice Complex Services Download the fór this mic.

Download a two-page check of Radio stations Television Information, August 1957, featuring screen-star ánd her DIY audió-hobby. Down load: Hyer is certainly demonstrated above in the middle of assembling her PERI 50, a mono hi-fi amp of the late 50s.

You can download the schematic for the PERI 50 here:. It't a 50-watt ultralinear amp of incredibly simple, efficient design. Thanks to PS dot com readers T.F. For providing this content. This item arrives as contrast to normal Women-In-Fifties-HiFi depiction, good examples of which are usually in. Despite the fact that ‘soldering-yóur-own-amplifier' drops much nearer to the wine-rack rather than gun-rack finish of the macho range, there had been apparently nothing at all in United states culture of the 50's that could not really end up being bro-ified, as this wonderful shop-apron of the era makes obvious: Despite its designed message of unapologetic philandering and strength, I kinda of obtain the impression that dude'beds workmanship is definitely substandard and he has a shrill voice.

Probably not really the best picture to project. Thank god for cultural improvement.

And on that be aware: will this web site possess any feminine visitors who construct/service audio tools? Drop us a line and represent. PS appear in com viewer Paul L. Was kind enough to send out us a check of “Audio AnthoIogy,” (ed.

McProud) á 124pg softcover published in 1950. “Sound Anthology” (hf. ‘AA') is certainly a selection of project-construction posts targeted at hi-fi (rather than professional audio) fans. All of the materials had been previously published in Sound Engineering journal during its 1st four decades of distribution (1947 -1950). Notice, and for previous 1940'h AUDIO Executive MAGAZINE insurance on PreservationSound. Over, an interesting boost-EQ stage that could become helpful in an instrument or mic amplifier.

Can any of our useful readers suggest which caps ór résistors in this outlet could become improved (and within what range) to modify the turnover regularity of the two filter systems at work right here? I have always been speculating that the reply will be: all four caps that follow the insight DC stopping cap which would generally obtain us back again tó, which i sworé i would under no circumstances build again Above, the nearly all complicated pipe amp I have ever observed. Kinda feel like must have come across this image at some point. Dynamic noise suppressor, phono pré, two eq handles, visual feed-back of higher and reduced frequency push, variable metering, loads of insight switching talk about the kitchen sink. This project is organized around the really fascinating 6ABeds7G dual-triode power amplifier pipe: essentially two 2A3s in one cup package with a 6V heater supply.

This is definitely possibly some useful information, specifically when you think about that a 6As7G is just about $13 from ( priced out 2A3s recently?). I think that there could be a special new acoustic guitar amplifier in the functions soon My god. At minimum they didn't try to tossed in an I am/FM tuner. Follow the link at the finish of the this blog post for schematics and components listings for some 6AS7G amplifiers.

‘Sound Anthology Vol 1' is usually obtainable. FOLLOW THE Hyperlink BELOW for 6AT7G project schematics. The unique Williamson hi-fi amplifier schematic as released in “Wireless World” journal (UK) Might 1947.

The is usually regarded one of the first hi-fidelity audio amplifier designs. It will be definitely one of the nearly all popular audio circuits ever created for DlY'rs.

Without faiI I appear to turn up at minimum one home-bréwed Williamson every season at the local properties+fleas. A PS Dot Com reader from the UK delivered us the unique content from “Wireless World” as published in 1947.

I have got yet to build a pair of these myseIf, and the idea of starting ‘from the top,' as it had been, with the initial design, will be appealing. A few stuff to note: check out out the provision to sense of balance the motorist stage, and split bias level and stability handles for the result stage. Also: check out out R25: the formulation for determining the suggestions loop resistor. I desire every schematic incorporated this notation. NB: the ‘M63' valve is simply a 6J5 - aka, one half of a 6SN7. The ‘U52' rectifier will be a 5U4 or comparative. ‘KT66' is a better-performing 6L6; sense free of charge to make use of 6L6 or 5881 if necessary.UPDATE November 2016: please go through thru the feedback area!

Electro Voice Microphone Serial Numbers

In all possibility, this can be in fact an primary Mirko Paneyko item, which indicates I have always been a large A-hole for marketing this issue for $180 on eBay in 2012. I only learned abóut MP in 2016 via a massive selection of outdated periodicals I purchased. He had been a titán in the audió field, and certainly one of the nearly all interesting historic figures in the Bridgeport area in the middle 20tl century. - ED I selected up a big heap of outdated audio equipment this past weekend; notable items included a Shure Degree Loc, a substantial Bogen pipe pa mind, a kit-buiIt Acrosound ultralinear 5881 amplifier, and a Gibson traditional gtr case from the earlier '60s (no gtr). Also included was the mono amp proven above. It's a push-pull amp, cathode biased 807s, with 6SN7 car owner and phase inverter; there can be furthermore a 2x 12A7 preamp section with this ‘remote control' control section attached via 10′ of cabling After a little washing, the amp actually works good if I remove the ‘remote' and insight directly into the last 12AA7 phase preceding to the stage inverter.

Simply because much as really making use of the remote, nicely, I can't very amount out what kind of patching requirements to be placed with the twó RCA jacks ánd one RCA man plug arriving out of the encounter of this issue. It'h a little bewiIdering. If anyone cán inform me who produced this amp, I visualize I could find the schematics somewhere. There are no marks on the device anywhere besides an inked serial amount inside the framework and the words ‘MP' on the remote control.

I are certain that this will be a factory-wired device, as there is usually tamper-paint ón every solder joint. BTW, I added the on-óff-switch and thé IEC outlet on the part, therefore don't let those two information derail your ID'ing attempts.

I are speculating that this a circa 1955 unit as the 12AA7 was only introduced in 1953, and the 807 craze was in the process of winding down by '55 therefore we're most likely looking at a unit produced between 1953 and 1958. Any ideas, please let me understand. This matter is certainly 95% of the way to complete operation and l'd like tó obtain it working strong again. It's a remarkable looking item, and it offers a lot of quantity. Updated: the secret has long been resolved. This amp was constructed by the Saulnier Songs Service of Columbus, Kansas; therefore sez the boy of the guy responsible. Examine the comments section for the full tale.

I was nevertheless in a need of a schematic (or actually simply a manual?) for this factor therefore that I can shape out what do perform with the assorted preamp jacks n'plugs. Regarding to our poster, this outlet emerged from a transformer manual; which would probably suggest a Stancor audió-manual circa 1954. Download a four-page write-up from “Radio stations Television Information” 4/1956 concerning the Mullard 520 power amplifier: DOWNLOAD: American industrial titan RCA offered schematics for a range of tube-audio tools in the back web pages of their several “receiving pipe manuals.” Mullard, a notable British maker of vacuum cleaner tubes, similarly published a book entitled “Mullard Tube Circuits For Audio Amplifiers” (l.f. The designs are quite different from RCA'beds, as Mullard advertised different tubes: Un34 rather than 6L6/5881; EL84 rather than 6V6; GZ34 instead than 5U4; and EF86 instead than 5879. The MTCAA also offered comprehensive programs for the fashióning of the actual sheet metallic cabinet and transformer-covér. The four-pagé article I was providing here is quite different from the oné in MTCAA, but possibly will get you on yr way to constructing this unit.

This design promises 35 w from a pair of cathode-biaséd EL34s. It does need an ultralinear (IE, with display taps) result transformer with á 16ohm turning for the harmful feedback loop , but various other than that it'h all extremely basic parts.

Today if I could discover some good inexpensive EF86s? BTW, The Mullard guide is still readily accessible as a reprint; properly worth the $17 cover up price IMO. There can be a routine for a 3-stage ‘combining preamp' offering EF86 pentode inputs with a 12Aback button7 on the back again end, the 2nd triode of the 12aback button7 wired as low-impedance cathode fans pretty enticed to try that one anyhow, you can buy ‘MTCAA' at. From some 1957 problems of “Radio and TV Information,” an electronic-serviceman's publication, comes this selection of American Hif-Fi house audio kit of the era. Discover the reality thát it's all móno.

Commercial recordings released on stereo system permanent magnetic tapes had been available as early as 1954, but it was the launch of the very first -ever stereo system LP record in Nov 1957 forever turned the wave towards two-channel ‘Stereo' recordings as the tradition for documented musical performances/productions. I have got one of these A7s and darn it is certainly a good-sounding little amp. Anyone possess a extra they wanna sell me (for stereo system. I have a tendency to think of Newcomb as even more of an industrial-sound/Pennsylvania sound business, but it appears like they produced some house units as well. I have got one of those massive glass-covered KX25 PA brains as proven here; it's always long been a little fIakey but I cán't bring myself to portion with it cos it arrived from a Catholic chapel and the pulls are tagged “Pulpit,” “Choir,” and “Sacrament Table.” Consider that, Punch/Ld Vox/ Bckng Vox. Boy went to jail in 1974 for resting about the value of á music-collection thát he donated tó a college.

Tried to get Mancini and Bernstein to back him upward and they would not. Life is usually longer. Electro-voice home hi-fi motorists c. 1957 Eico house hi-fi ámps and pre-ámps circa 1957. Eico had been essentially the ‘additional' Heath(kit).

Eicos could become purchased possibly sent or as packages. Here's a two-page write-up on their fIagship HF60, a lovely amp with EL34 output pipes and an ultralinear Acrosound output transformer.

Pictures of women as depicted in high-fideIity guidebooks circa 1960. These type of journals generally deal in DIY advice, schematics, and ‘purchasers tutorial' sections.

There is certainly a great deal of floor-sitting, demure outfits, and distant-gazing. There is definitely an uncanny likeness to many of these photos. Or as E places it: ‘WTF. They all appear like cats.'

Yeah that pretty much states it. On uncommon event, we are shown ladies in more energetic (IE., less decor) assignments. Here are a few of examples: the (potential) technician and the client. From PS Department of transportation Com audience C. McColm come these pictures of his authentic circa 1955 Pilot mono hi-fi program.

At his term when he pertains that there has been a cult for Preliminary in the 1950s; this internet site will get an unusual quantity of traffic from people looking for, and reading through, the several PILOT articles I possess published. Pilotuners had been made for a really long time, in many constructions; I've individually purchased two in the past year by itself. Total 1950s hi-fi techniques like G.M.h are uncommon these times for several reasons, not really the least of which is the fact that several have become cut up and gutted for parts over the decades. It can be hard to find the space to include a device like this in a contemporary domestic-spacé, but for anyoné who loves listening to 1940s and 1950s recordings, I can't visualize a much better way to listen to it than on a program like this. Relates: ‘ALL Preliminary electronics; Pilotuner tuner/pre amplifier, Miracord Auto Turntable. Williamson Amplifier with a pair of Genelex KT66 tubes Great audio: like you are really generally there. The Pilot pre amplifier tuner has adaptable AFC for thé FM, EQ fór the phono; roIl-off and turnovér frequencies and á environment for early 78s; if you have 78'beds, you need this eq establishing to hear them correctly.

The built-in speaker cabinet is ported and striper reproduction is definitely obvious and solid. The Higher end on the triaxial loudspeaker is great also.

Loudspeaker is branded University Sound; (this has been) a division of Altec. Huge speaker with L-páds for the mid and high frequency drivers. ‘ This gaming console, with the unique Goodmans Loudspeaker, received 1st place in a hi-fi present in Ny og brugervenlig town. My buddy's Dad assembled it.This turntable provides a Magnetic cartridge.

A lot of systems then were (regarded as) hi-end if they had a Magnetic phono insight. It offers both LP and 78 needles switch-able without elimination.' ‘This collection sat inoperative for a lengthy time.

(I carried out) a comprehensive cabinet repair, changed a blend, and cleansed the controls. This collection really will get the work done. Pilot was actually HI END; it had been not as well-known as Fisher ór Marantz or Scótt. People in the know knew about this things.' Notice and for prior PILOT insurance on Preservation Sound. Pilot was one of the classic NYC Golden-Agé Hi-Fi manufacturers. Although the Pilotuner mono FM tuner collection has been their most iconic item, the Pilotrol was their flagship giving.

The Pilotrol appears like an attempt to fulfill the most compulsive hi-fi supporters; it really seems like they attempted to stuff as many lights, control keys, functions, and knóbs in there ás achievable. What with the extra of buttons, slant-front cabinet, and VU meter, Pilot appears to have been attempting to turn the simple take action of using your audio system into an expertise; I see shades of ‘Objective Control,' ‘The Cockpit,' and probably police radio stations as nicely in the design.

Anyway, it's too poor this is usually a mono unit; usually I'd be looking for one Here's the schematic. Good pentode phono input. Anyhow, we can notice echos of the PiIotrol and its féature-laden iIk in much hi-fi gear of the 70s - consider a.

Give even more features, but currently the control keys and lighting have become changed with selections and displays. In competitors to this thread, we have got the minimalist streak and its.

Which operating principle do you prefer? Perform you would like the apparatus to be in the background or the foréground of your audió-listening knowledge?

Specifically what will be ‘the expertise' for you? Hearing the sounds? Or is the procedure of the equipment essential to your enjoyment? At what stage will technology become so innovative and therefore pervasive that ‘handles' themselves can only been seen as stylish and nostalgic?

Are usually we now there yet?. Content navigation.

There are usually several methods to figure out when a Fender amp has been produced. Very first use the cosmetic functions to get a range of possible years. Following, (if relevant) appearance for the time code on the tube graph. If your amp dosen't have a time code, turn the amp upsidé-down and check the transformers, and loudspeakers for their producer codes.

If possible, open up up the chassis and verify a several of the planting pots' and capacitors' producer codes. Remember, many parts could have been changed over the decades, speakers blow, caps dried out away, transformers melt lower, and cooking pots use out.

Here is usually a great link to a that monitors sales data for specific amp models by the 30 days. Date Code: Broad panel, thin panel, brown, brunette, and black encounter amps possess a time program code hand-stamped on the tube chart. This code is made up of two letters. The initial letter translates to the year and the second to the 30 days. The reissue amps furthermore made make use of of this code. Instance: FG=Come july 1st 1956, QA=Jan 1967, and a reissue CG=September 1992 Extra Info: EIA Source-Date Codes: Electronic components like as transformers, potentiometers, audio speakers, and some capacitors are usually often stampted with a date code indicating who manufactured them and when. The program code follows the file format: XXXYY ZZ whére: XXX = a twó or three (possibly four on newer amps) digit quantity indicating the producer.

(notice chart beneath) YY = is certainly a one ór two digit code suggesting the calendar year. If it'beds a one digit 12 months you require to figure out the appropriate decade of the amp some various other method. ZZ = a quantity from 1 - 52 suggesting the 7 days of the calendar year. Keep in mind, your amp is definitely newer than the newest component. So if you discover cooking pots from late 68 and transformers from earlier 69 you can be pretty sure your amp is certainly a 1969. Day Codes Notice Code Vintage Year Reissue 12 months Month A - 1990 January M - 1991 Feb C 1953 1992 Walk G 1954 1993 April Age 1955 1994 May F 1956 1995 Summer H 1957 1996 July H 1958 1997 August I 1959 1998 September J 1960 1999 Oct T 1961 - Nov M 1962 - Dec M 1963 - - N 1964 - - O 1965 - - P 1966 - - Q 1967 - - Common Fender Source Codes Program code Manufacturer Part(s i9000) 67 Eminence Loudspeakers 73 M.C.

Lansing (JBL) Loudspeakers 137 CTS Potentiometers, Loudspeakers 220 Jensen Speakers 235 Mallory Capacitors 285 Rola Speakers 304 Stackpole Potentiometers 328 Utah Audio speakers 391 Altec-Lansing Loudspeakers 433 Cleveland Audio speakers 465 Oxford Speakers 606 Schumacher Transformers, Chokes 649 Electro Voice (EV) Audio speakers 830 Triad Transformers, Chokes 1098 Pyle Audio speakers Serial Amount: There is definitely no information readily accessible for dating Fender amps by serial amount but there are people working on it. Outlet Program code: In 1963 Fender stoped making use of design numbers to determine schematics and began making use of the model name and an assigned circuit number. These signal numbers which are situated on the tube graph can be usefull for getting a rough day on an amp. Fender usually utilized the exact same routine for many yrs so this will be not a extremely accurate method for amp dating. The code is easy, the very first two characters are the revising, where AA is the very first revision, Stomach is certainly the 2nd, etc. The following one or two numbers are usually the month where January is usually 1 and Dec will be 12. The last two numbers are the 12 months.

Illustration: AB763 = second revision, Come july 1st, 1963 AA1070 = First revision, October, 1970 Misc Relationship Information: Gold face amps with the light weight aluminum trimmed grilles are from 67 or 69. The fist Get better at volume handles were first set up in 72. The raised “Fender” grille logo design dropped its tail around 76. There are exclusions to this guideline like the thé Bronco.

Fender installed casters on some bigger amps and cabs beginning in 72.