Kinda feel like must have come across this image at some point. Dynamic noise suppressor, phono pre, two eq controls, visual feedback of high and low frequency drive, variable metering, tons of input switching talk about the kitchen sink. This project is organized around the very interesting 6AS7G dual-triode power amplifier tube: basically two 2A3s in one glass envelope with a 6V heater supply. This is potentially some useful information, especially when you consider that a 6As7G is only about $13 from ( priced out 2A3s lately?). I think that there could be a unique new guitar amplifier in the works soon My lord.

ZZ = a number from 1 – 52 indicating the week of the year. Remember, your amp is newer than the newest component. So if you find pots from late 68 and transformers from early 69 you can be pretty sure your amp is a 1969. Date Codes Letter Code Vintage Year Reissue Year Month A – 1990 January B – 1991 February C 1953 1992 March D 1954 1993 April E 1955 1994 May F 1956 1995 June G 1957 1996 July H 1958 1997 August I 1959 1998 September J 1960 1999 October K 1961 – November L 1962 – December M 1963 – – N 1964 – – O 1965 – – P 1966 – – Q 1967 – – Common Fender Source Codes Code Manufacturer Part(s) 67 Eminence Speakers 73 J.B. Lansing (JBL) Speakers 137 CTS Potentiometers, Speakers 220 Jensen Speakers 235 Mallory Capacitors 285 Rola Speakers 304 Stackpole Potentiometers 328 Utah Speakers 391 Altec-Lansing Speakers 433 Cleveland Speakers 465 Oxford Speakers 606 Schumacher Transformers, Chokes 649 Electro Voice (EV) Speakers 830 Triad Transformers, Chokes 1098 Pyle Speakers Serial Number: There is no information readily available for dating Fender amps by serial number but there are people working on it. Circuit Code: In 1963 Fender stoped using model numbers to identify schematics and began using the model name and an assigned circuit number. These circuit numbers which are located on the tube chart can be usefull for getting a rough date on an amp.

Electro-voice home hi-fi drivers c. Eico home hi-fi amps and pre-amps circa 1957. Eico was essentially the ‘other’ Heath(kit). Eicos could be purchased either wired or as kits. Here’s a two-page article on their flagship HF60, a beautiful amp with EL34 output tubes and an ultralinear Acrosound output transformer. 1932273 is the serial number on the bottom plate it says ' VOX. How to date a vox wah? Discussion in '. Electro‑Voice engineers leading‑edge sound reinforcement solutions with products designed to provide best‑in‑class performance, reliability and value.

There are several ways to determine when a Fender amp was produced. First use the cosmetic features to get a range of possible years. Next, (if applicable) look for the date code on the tube chart. If your amp dosen’t have a date code, flip the amp upside-down and check the transformers, and speakers for their manufacturer codes. If possible, open up the chassis and check a few of the pots’ and capacitors’ manufacturer codes. Remember, many components could have been changed over the years, speakers blow, caps dry out, transformers melt down, and pots wear out. Here is a cool link to a that tracks sales data for specific amp models by the month.

1 CONTACT ARE GROUNDED. 2 HIZ.” (high impedance setting) “CONTACTS NO.

SCU010426 $150.00 (1 only) - Early grey color 8 ohm 100 watt 'rounded' fins alnico magnet model. Looks and sounds excellent. SCU008835 $150.00 (1 only) - Later black color 8 ohm 100 watt 'sharp' fins alnico magnet models feature full size silver/red/black ID plates on back. Near new condition. SCU007895 $175.00 each - Later black color 8 ohm 100 watt 'sharp' fins alnico magnet models. Drivers have no markings other than consecutive production numbers on rear.

SCU007894 $250.00 pair - 8 ohm models in excellent condition. SCU388 $150.00 each - 16 ohm ceramic magnet models feature plastic 'snouts' & phenolic diaphragms. Excellent condition. SCU003991 $60.00 each - 8 ohm ceramic magnet models feature plastic 'snouts' & titanium diaphragms. Look very, very good and sound excellent. SCU268 $60.00 each - 8 ohm 'long snout' models in excellent condition.

Thats about the best pic i can get with the camera i got. 68/70s is a sure bet. There's no other info on the speaker. A 6 digit # on the back of the cone and the 3 on surround.

Both speakers have very minor cone repairs, otherwise these speakers are in super clean near mint condition and sound great! One pair available. SPU010167 $300.00 pair - Late 50's 16 ohm models feature reddish/brown color frames & magnets. Original factory cones are different from each other but sound very similar. Excellent condition. SPU003102 $300.00 pair - Recent 8 ohm models in near new condition. SPU004604 $250.00 each - All original 16 ohm 1967 model.

These 'Code' formats were not completely standardized, but a little deciphering will generally yield the info that's needed to identify the speaker in question. For example if you have 220325 on a speaker, you can tell that it's a Jensen speaker, but the year is either 1973, 1963, or 1953 from the '3', and the '25' is the week of production. The model type, or number, is sometimes stamped on the speaker frame as well; for example P10R, or C10Q. Below is a list I've compiled with some of the most common speakers used in audio/music today: Speaker company EIA Code Eminence 67 CTS (Chicago Telephone Supply) 137 Jensen 220 Quam (Quam-Nichols) 270 Rola 285 Utah 328 Western Electric 336 Altec Lansing Corp 391 North American Philips (Norelco) 423 Oxford 465 Waldom Electronics 555 Electro-Voice 649 Klipsch 843 Oaktron 934 Fisher 1056 Pyle 1098 WeberVST 1279 Celestion go If you see any irregularities, or know of any other information that might be useful on this page please feel free to contact me: e-mail:, or call: (209) 606-6467.

Today at PS dot com: 70’s month nears its close with a quick look at some promising but lesser-known mics of the 70s. If you are using any of these pieces in the studio these days, drop us a line and weigh in. Above: the Shure SM53, a high-end dynamic cardiod that seems to maybe have been Shure’s answer to the RE15? I’ve been trying to pick one these up on eBay, no luck yet anyone? And speaking of the RE15 after watching the prices slowly rise on eBay for the past year, I finally picked up one of these. Expect some audio clips/shoot-out here soon.

This variable front-to-back distance along with dynamic-type construction affords high resistance to mechanical shock and eliminates proximity effect. The Model 664 is an all-purpose public address microphone designed to fulfill requirements of wide-range reproduction under a great variety of conditions. Because of its excellent and uniform polar response, it is especially useful in locations where acoustic feedback, ambient noise, and severe reverberation exist. The preferred instrument for serious home and semi-professional recording, the 664 is also an ideal choice for quality sound reinforcement systems, particularly where acoustic problems exist. It is equipped with a pop-proof wire mesh grille which minimizes wind and breath blasts. The Model 664 may be used on a floor or desk stand or carried in the hand. This all-purpose microphone features the exclusive Electro-Voice Acoustalloy® diaphragm.

Length: 7 3⁄ 16', not including stud. See Figure 3. • Net Weight: 1 lb., 12 oz., without cable. • Cable: 15 ft.

The SM5 is much less common, no longer made, and consequently extremely expensive. Are any of y’all using SM5s for music or vocal recording these days? Above: Sony ‘Superscope’ branded C-77, C-37, and C-55 circa 1969. A C-37 or C-37 Fet is very high on my wish-list Never used any of these models. Above: the Electrovoice RE55 is introduced (1969). Interesting to see that the RE55 was the successor to the 655.

This code is made up of two letters. The first letter translates to the year and the second to the month.

Although the Pilotuner mono FM tuner series was their most iconic product, the Pilotrol was their flagship offering. () The Pilotrol seems like an attempt to satisfy the most compulsive hi-fi fans; it really seems like they tried to cram as many lights, buttons, features, and knobs in there as possible. What with the excess of buttons, slant-front cabinet, and VU meter, Pilot seems to have been trying to turn the simple act of using your audio system into an experience; I see shades of ‘Mission Control,’ ‘The Cockpit,’ and maybe police radio as well in the design.

SPU264 $150.00 each - Late 90's 8 ohm 150 watt model. Little use since fresh recone. Looks and sounds excellent. SPU008357 $150.00 (1 only) - Late 90's 8 ohm 150 watt models made for Mesa Boogie. Feature factory water repellant cones and spade terminals. Codes on magnets are #1810-2595. Look and sound excellent.

SPU008356 $150.00 each - 90's 16 ohm 200 watt models made for Krossroads. Like new condition.

(I performed) a complete cabinet restoration, replaced a fuse, and cleaned the controls. This set really gets the job done.

So guitars and amps made as late as 1973 can still have 1967 date codes from this huge 1967 stocking. All during Fender's life as an amplifier maker, then used speakers made by Jensen (#220), CTS (#137), Oxford (#465), Utah (#328) and Altec-Lansing (#391).

SPU004838 $500.00 pair - Early 16 ohm model features reddish/brown color frame & magnet cover with red & silver color ID plate, original #72336 paper edge cone, EV logo dome with 'whizzer' cone. Cone is slightly stained, otherwise looks & sounds excellent. SPU006559 $150.00 (1 only) - 60's 16 ohm model features off white color frame & magnet cover and original cloth surround 'whizzer' cone. Looks and sounds excellent. SPU005571 $125.00 (1 only) - 8 ohm black color models feature silver/red/black color ID plates and original 'whizzer' cones with tan color cloth surrounds. 'Whizzers' are slightly bent, otherwise these speakers look & sound excellent. One pair available.

Fender often used the same circuit for many years so this is not a very accurate method for amp dating. The code is simple, the first two letters are the revision, where AA is the first revision, AB is the second, etc. The next one or two numbers are the month where January is 1 and December is 12.

Posts navigation.

SCU002682 $125.00 each - Early grey color 'light weight' cast aluminum models in excellent condition. One pair available. SCU006997 $100.00 pair - Later black color 'heavy weight' cast aluminum models in very, very good condition (some paint scratches). 10 available. SCU270 $30.00 each - Original 50's black color models include reddish/brown color metal thread adaptors.

It’s a 50-watt ultralinear amp of extremely simple, efficient design. Thanks to PS dot com reader T.F. For providing this article. This piece comes as contrast to typical Women-In-Fifties-HiFi depiction, examples of which are in. Despite the fact that ‘soldering-your-own-amplifier’ falls much closer to the wine-rack rather than gun-rack end of the macho spectrum, there was apparently nothing in American culture of the 50’s that could not be bro-ified, as this charming shop-apron of the era makes apparent: Despite its intended message of unapologetic philandering and stamina, I kinda of get the impression that dude’s workmanship is shoddy and he has a shrill voice. Maybe not the best image to project.

As for repair,it depends on what is wrong. If it is the switch (cheap).If it is the pot? (Cheap HotPotz2 is a direct replacement). Check With Analogman for a repair.He is very reasonable and has a quick turnaround. Bottom LINE.I would keep it as original as possible and have it repaired.If you don't like the sound after you get it working,sell it with confidence and the Analogman service history and buy you an RMC Wah.Good Luck. Dating the pot will get you in the ball park but those pots could have been sitting around for a long time before they made their way into a pedal.

For example, a Duette with serial number 710201 was made in 1957 (7), during October (10), and was possibly the 201st amp made that month. 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.

At what point will technology become so advanced and so pervasive that ‘controls’ themselves can only been seen as quaint and nostalgic? Are we there yet?. Posts navigation.

Was kind enough to send us a scan of “Audio Anthology,” (ed. McProud) a 124pp softcover published in 1950.

Love Strange Love movie trailer, Love Strange Love movie, watch full Love Strange Love film online, watch Love Strange Love movie now, watch full film Love Strange Love online, Love Strange Love film, streaming Love Strange Love film, download full film Love Strange Love, film Love Strange Love online, watch Love Strange Love film now, movie Love Strange Love download, download film Love Strange Love, Love Strange Love film download, Love Strange Love movie download, Love Strange Love live streaming film, watch Love Strange Love movie online now. Bollywood full movie free download.

I hooked up today on an old SRO Alnico12' speaker that seems to be in pretty good shape. I not to sure if its been reconed for i remember them having a Alum. The ohms on my cheap meter wont read steady but it reads about 8 ohms where most 8 ohms spks read about 6.5 Printed on the back says 8 ohm.

I am still in a need of a schematic (or even just a manual?) for this thing so that I can figure out what do do with the assorted preamp jacks n’plugs. According to our poster, this circuit came from a transformer manual; which would likely mean a Stancor audio-manual circa 1954. Download a four-page article from “Radio & Television News” 4/1956 regarding the Mullard 520 power amp: DOWNLOAD: American industrial titan RCA offered schematics for a variety of tube-audio equipment in the back pages of their many “receiving tube manuals.” Mullard, a prominent British maker of vacuum tubes, similarly published a book entitled “Mullard Tube Circuits For Audio Amplifiers” (h.f. The designs are quite different from RCA’s, as Mullard promoted different tubes: EL34 rather than 6L6/5881; EL84 rather than 6V6; GZ34 rather than 5U4; and EF86 rather than 5879.

War department for the T-45 microphone. Kahn is told by a Marine Corps officer that the historic landing at Guadalcanal was held up several weeks until troops could be equipped with the mic in order to reduce casualties.

Thanks for everyone's help. Edited February 7, 2015 by Andrea87. Andrea, you have EBay as the best route to command the highest amount of money, and then you have to navigate the shoals whether you are dealing with an honest person or not. I have a Patrician utility speaker sitting in the garage, with the 18' woofer, 12' midwoofer, t25 mid, and t35 tweeter with the correct crossover, and have not been able to sell it in the past year for $1500.

Late 1940s: Kahn is directly involved with the beginnings of Heathkit in Benton Harbor, Michigan, donating a train car of surplus electronic parts that become the foundation of the O1 oscilloscope, Heathkit’s first electronic project. 1950: EV begins manufacture of home hi-fi loudspeakers, quickly becoming one of the largest suppliers in the U.S. EV logo and branding from the 1950s through the early 1980s. Late 1950s – 1970s: EV microphones are a staple of space flight, beginning with early Mercury and Gemini missions through Skylab space station. Both mics and speakers served Skylab during its six-year orbit, performing without failure despite a lost heat shield. Early 1960s: The EV 643 “monster mic” is introduced. Six feet long, it is highly successful in picking up distant sounds and becomes a standard at presidential press conferences, political conventions and athletic events where conventional mics can’t handle the distance problem.