Electro Voice Serial Numbers
Electro-Voice Timeline: 1927 – 2001. 1927: Al Kahn and Lou Burroughs found Radio Engineers in the basement of the Century Tire & Rubber Company, South Bend, Indiana. Company focus is radio retail, service and repair. Within a year, it is the largest radio service shop in the city. Find great deals on eBay for Electro Voice Microphone in Vintage Pro Audio Equipment. Number of bids and bid amounts may be slightly out of date.
Right here's some associated information: (Quotation) The text message for this section was reproduced with the kind authorization of the writers of Ampeg: The Tale Behind the Audio, ©1999, released by Hal Leonard. The publication includes, in inclusion to an in-depth history of the Ampeg business, more useful technical info on the variations in Ampeg amplifiers, including colour depictions of the numerous cabinet covers and grill cloths. Click on here for information on purchasing this publication straight from the writers. Relationship Ampeg Amplifiers - Ampegs can be split into six distinctive organizations for courting purposes: pre-1953, 1953 to mid-1965, early 1965 to 1969, 1969 to 1979, 1981 to 1984, and posting-1984. Each group utilizes a distinctive serialization system that can end up being used to support in courting the amps, but in several cases, it is definitely the features and features of the ámps that determine thé 12 months of produce.
Electronic Sectors Association (EIA) requirements can also be very helpful for offering indications as to an amp't age group. These rules can end up being discovered on audio speakers, transformers, cooking pots, capacitors, and muIti-section electrolytic 'cán' caps. Of training course, these rules are only applicable to initial components, not replacement parts.
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WARNING: Ampeg amplifiers, specifically the high-powered amps like as thé SVT ánd V-series, contain deadly voltages actually when unplugged and converted off. As a result, do not really stick around in your old Ampeg if you are usually new with amplifier electronics or their procedure. A brief summary of the EIA program follows. Quickly after Planet Battle II, American electronic component manufacturers began to stamps a semi-standardized program code into the parts they produced. The code contained info regarding the produce and date of creation. These rules have long been utilized on parts like potentiometers (planting pots), transformers, capacitors, tubes, and speakers.
The code usually is made up of 6 or 7 digits like as 137634 where the first two or three numbers is definitely the EIA code for the manufacturer (137 denotes CTS), the fourth number and occasionally fifth digit denotes the yr (in this situation it could end up being 1956, 66, or 76), and the final two numbers denote the 7 days of the year. It is essential to take note that parts do not always include EIA requirements, especially those components from the late 1940s and earlier 1950s. Some common manufacturer requirements for components used in Ampegs include: Speakers: Jensen (220), CTS (137), Eminence (67), Quam (270), Rola (285), Altec (391), Electro Tone of voice (649) Capacitors: Pyramid (472), Cornell-Dubilier (34) Transformers: Acrosound (878), Stancor (138), Electric Windings (682), Todd Electric powered Company. (926), Standard Electric Products (668) Pots: CTS (137), Stackpole (304) - Pre-1953 The Michael-Hull amplifiers can end up being narrowed straight down to a date of manufacture between 1946 and 1948.
These amps utilized a serial amount system that was not utilized by any Ampegs. However, the serial numbers are usually of little help for courting one of thése pre-Ampeg models and EIA date requirements on parts were used erratically during the early blog post WW-II yrs. The just date rules that seems to be readily available is found on the speaker magnet located under the bell cover up. The Ampegs made between 1949 and 1953 did not have got serial numbers and must become went out with in the exact same way as the Michael-Hull versions, particularly, by selecting the EIA day rules on planting pots, transformers, multi-séction 'can' capacitors, ánd loudspeakers.
1953 through middle-1965 It shows up that the serialization system utilized during this time period is usually time encoded which makes courting the amp rather easy. The serial numbers are usually 6 numbers in duration with the subsequent pattern: YMMNNN, where Y denotes the season, MM the 30 days, and NNN the Nth device created that month. The Nth unit, nevertheless, may not have began with 001. Ampeg may quite well have got utilized 100 or 101 as the beginning point during sluggish production periods.
Even so, for dating reasons, the serial quantity provides adequate information during this time period. For example, a Duette with serial amount 710201 had been produced in 1957 (7), during October (10), and was probably the 201scapital t amp produced that month. A Super Echo Two with serial number 404553 was produced in 1964 (4), during April (04) and may have been recently the 553tl amp made that month (553). Caution is required for dating amps from 1953, 1954, 1955, and 1960. The serial numbers from these decades were duplicated in 1963, 1964, 1965, and 1965, respectively. Having the instance Super Mirror Two above, its serial quantity solely could denote Apr 1954 or Apr 1964.
A Mercury with serial amount 009054 could become from Sept 1960 or it could end up being from the second serial amount system implemented in 1965. Fortunately, it is definitely very easy to figure out which season the 1st digit denotes. The key is usually the design and the makeup. For instance, the Super Echo California king was produced in 1964, but not really in 1954. The Meters-12 Mercury routine of 1960 utilized 6V6 energy tubes, but the Mercury routine of 1965 utilized 7591Abeds. Furthermore, an Ampeg fróm 1954 would not be protected in glowing blue check plastic whereas an amp from 1964 would possess this gift wrapping.
An Ampeg fróm 1960 would be protected in navy blue random style vinyl whereas an amp from 1965 would be covered in blue check vinyl fabric. Another check for a 1960 versus a 1965 or afterwards serial number (i.y. Numbers starting with 0) is certainly that the 2nd and 3rd digits of the amount denote the 30 days in the initial serial amount system. Thus, a serial number where these two digits are higher than 12 must be from the second serial amount program (1965 - 69). A final cross check with EIA dated elements should eliminate any doubt about an made during the 1953 - 65 time period.
Early 1965 through 1969 The second serial number system was implemented in Jan 1965 and utilized until the finish of 1969. This system overlapped with the previous serialization scheme for a time period of about 6 weeks. These are furthermore 6-digit numbers, which show up to have got been used sequentially, but they are not day encoded. Sufficient info (serial numbers, model, date codes) offers been gathered to prepare the subsequent guidebook for courting by serial quantity. Note that the 12 months linked with a range of serial numbers is very rough and will most likely alter as more information is certainly collected for refining the quotes. The EIA day requirements of primary parts should end up being used to confirm an approximate time of produce.
Electro Voice Microphone
Serial Number Range Season 000001 to 0 020000 to 0 049000 to 0 075000 to 0 080000 to 0 - 1970 through 1979 The third serial quantity system was implemented in 1970. Not enough info was obtainable to the authors to figure out season of produce by serial number.
Electro Voice Microphone Serial Numbers
An included variable can be that during the Magnavox decades, Ampeg may have got used independent serial amount systems for each model or for versions that shared the exact same chassis like thé VT-22 and V-4. Until like time that sufficient information will be accessible to date 1970s Ampegs by serial amount, the features of the ámps from this period can be used and likened to the pursuing table.