Technical Specification

This information original was found on The Unofficial Ampeg Page http: I pulled this information from Google’s cache of the site. It has a note at the top of the page that they were reprinting with permission from the authors of Ampeg: If anyone feels this page should be taken down, please feel free to contact me. Ampegs can be divided into six distinct groups for dating purposes: Each group uses a unique serialization scheme that can be used to assist in dating the amps, but in many cases, it is the features and characteristics of the amps that determine the year of manufacture. Electronic Industries Association EIA codes can also be very useful for giving clues as to an amp’s age. These codes can be found on speakers, transformers, pots, capacitors, and multi-section electrolytic “can” caps. Of course, these codes are only applicable to original components, not replacement parts. Ampeg amplifiers, especially the high-powered amps such as the SVT and V-series, contain lethal voltages even when unplugged and turned off.

Ampeg Dating

This is one of the most frustrating questions from the MIJ collector. People often make the mistake of citing the American or European importer as the ‘maker’ of the guitar, when in fact several Japanese manufacturers were producing badged guitars out of their plants and shipping them to America and Europe to sell. Japanese manufacturers made multiple badges at the same plant, many of whom resemble each other closely.

Dating Vox Amps This directory contains USENET articles Mic has saved about guitars, equipment, pickup, techniques, players, and so on. Mic has graciously granted permission to post the stuff on the JT30 page on the off chance that it might be useful in the context of Blues Harmonica.

The only major difference in tone between the two circuits would be attributable to the different tone caps. For some models like the blackface Concert, there was no change in phase-inverter resistor values, and no changes in tone stack cap values fascinating! And for other models, the tone stack did not change from. The “universal” changes do seem to be the oscillator circuit, cathode resistor change from 56K to K, and the addition of the ohm grid stopper resistors.

Did you know that early blackface amps do not have white silk screening around the bright switches? Whether this was added before the end of is not known yet. This feature would have been phased-in at slightly different times for the different amps as faceplates were ordered and used in somewhat different amounts and at somewhat different rates for each model. Some general information about cabinet construction: An interesting feature on the tweed-style cabinets is the use of a dowel reinforcement in the top on either side of chassis.

Baffle boards were made of plywood from to Particle board some call it MDF — medium density fiberboard baffles debuted in and were used through the early s. The baffle board was removable on amps made from to about and glued-in thereafter.

Hagstrom Guitar

Owner indicated in the ad that it didn’t work but for that price I figured I’d pick it up and see if I couldn’t get the old girl running again and know its maintenance history to boot. Sorry no pix as I dropped it off at Schroeder Guitar Repair in Chicago yesterday for a once over and fix. This particular amp is a bit beat up missing a small strip of the “random navy flair” tolex on the side, a fuse cap, needs new caps etc.

I believe it to be one of the very first Reverberockets ever made, with a serial number of th made? Schematic on is back panel dates May and these were introduced in July of that year.

how to check date of production by serial number – Ampeg Music question. Search Fixya. Browse Categories How to check date of production by serial number. Posted by Anonymous on Jul 19, Deciding the date depends on what part of the amp your serial number is.

Features one channel and two inputs; volume, bright, treble, treble expander, bass, bass expander, bright switch, deep switch, stand-by switch, pilot light for stand-by and operate. This amp was built to play larger halls and outdoor concerts. The lack of reverb was not a big issue as most live performances had acoustics full of reverberation halls, arenas. Peter Traynor built these things to stand up to road abuse, unlike a lot of vintage stuff.

It sounds great with either bass and guitar, providing a clean and loud tone. Works great in large club settings. Front panel has two input jacks, controls for treble boost, volume, treble expander, treble, bass expander, bass, presence, and bass boost. There is also a standby switch and corresponding green and red pilot lights. There are no effects in this head, but stomp boxes work just fine. The front of the amp is wrapped in a Fender-style silver-face cloth [ There is also a cooling fan installed.

With tubes, you’ll get about W from the Custom Special. Original tube [complement] was three 12AX7s and four 6CA7s that I swapped for s very easy, just boost bias about ten volts in order to have 30ma idle Original input resistor was k and I changed it for 5. Can be converted from to EL34, I think a pin jumper is needed.

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Best Jump on these while they are still here and available!! The values have drifted a little measure about. In fact, I have sold over a dozen or so of these over the past year and these examples are by far the cleanest I have seen in a long time!! Gauranteed to work upon arrival!

Applicable and serial 3 of resources available ampeg amp serial number dating 20 free dating site crack, ampeg svx for ampeg. Ton, and mods: blue guitar amp is gibson, guild hiwatt. Ton, and mods: blue guitar amp is gibson, guild hiwatt.

Again, and according to Dan “any instrument made prior to A D was a prototype made before the actual production run began. It seemed likely that some instruments may have slipped through the proverbial ‘cracks’ in the system, but I had never actually seen one. My curiousity was satisified the day I heard from Mr. Kolderie, a record producer and engineer who sent in photos of his Dan Armstrong guitar that somewhat fit my theory. Kolderie photo courtesy of Paul Q.

Kolderie As can be seen in the upper left, this guitar features all the usual hardware of later Dan Armstrong guitars. However, as the upper right reveals this guitar is fitted with a neck that has no serial number on it whatsoever. In fact, the only distinguishable feature on this neck are the letters ‘ACF’ which is hand written, on the bottom of the base, or tongue of the neck rather lazily or haphazardly, not like what one would write if one was trying to be extra careful.

On the contrary, it looks rather scribbled in there. Was this a particular neck picked out by an Ampeg employee with the initials ACF? It would seem unlikely, for Dan personally inspected every instrument before it left the factory.

Scored a ’61 Ampeg Reverberocket for cheap! Advice sought

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Video: Decoding Ampeg Speaker Cabinet Model Numbers. Posted on June 3, in Videos THE SERIAL NUMBER IS DWTD 8A CAN YOU HELP? THANKS FRANK CUCINOTTA E all-tube amp Ampeg ampeg artist artist B BA Bass bass-amps bass-cab cab classic combo demo DI Dino flip-top garth fielding guitar head Heritage micro Micro-VR motown.

Ampeg Portaflex In the late s Jess Oliver invented [8] a combo amplifier with a chassis that could be inverted and tucked inside the speaker enclosure to protect the vacuum tubes. This combo bass amp was introduced in as the Portaflex , and remained a popular choice through the s. Characteristics[ edit ] A particular characteristic of Ampeg amplifiers in the s is that they were designed to be used for jazz and other types of music where distortion was not sought after — as Everett Hull had a major contempt for rock and roll music, and his hope that it being merely a “passing fancy” never materializing, had merely manifested his dismissive attitude towards the genre.

The closest they came to a rock’n roll endorser at one point, was by way of Joe Long , a left-handed bass player of the Four Seasons , who played the company’s Horizontal Bass. This was further compounded by the one chief competitor Hull disliked the most; Fender , as they continually bested Ampeg in overall sales. Hull would grudgingly acknowledge rock’n roll music, via advertising copy for Ampeg’s “Supercombo” bass amp, introduced in Reverberocket[ edit ] Ampeg R R Reverberocket The Reverberocket would become another exception to that rule, as an amplifier with 6V6 -type power tubes which sounded “Fendery” and did break up in a way that rock and roll players could use.

Dan Armstrong After Ampeg was sold to Unimusic in , Dan Armstrong would be brought on board, and along with the opening of regional offices in places like Nashville, and the West Coast, the company’s previously stodgy image would be dealt with, once and for all, especially with the creation of the all-new SVT amp, which would be “field-tested” by the Rolling Stones during their concert tour. Additionally, Keith Richards would be playing at least part-time Dan Armstrong’s newly designed see-through body guitar.

Super Valve Technology[ edit ] Main article: Rock concerts were becoming increasingly large affairs and bigger amplifiers were needed. The high power rating made the SVT a candidate for use in larger venues.

Gibson EB1 Bass

Fender – Super Champ ‘s Black Tolex Rare, Custom and Vintage Amps For sale A guitar amp is an electronic amplifier that functions by increasing the signal of an electric or acoustic guitar so that it can produce sound through a loudspeaker. A common misconception about guitar amps is that they are used solely to amplify sound. Most amplifiers are also able to modify the tone of an instrument by emphasizing or de-emphasizing certain frequencies, and by adding effects to create different sounds.

3/18/I’ve been working on a transformer part number cross reference for a while but I just don’t have enough data to work from to make it really useful. To help out with this I’ve put a SURVEY FORM up to collect date, serial number and transformer info.

The first Fender solidbody model, the Esquire , lasted in name only from June to October This model name was replaced by the “Broadcaster”, which lasted in name only from the October to January All Broadcasters have truss rods, where many Esquires often have no truss rod. In Gretsch had trademarked the name “BroadKaster” for a line of drums. After advertising the Broadcaster in music trade papers in February 20, , Gretsch took notice and sent Fender a telegram asking them to change their name.

Therefore Fender was forced to drop the name Broadcaster. Starting around February 22, , Fender cut the word “Broadcaster” off of their headstock decals. These models February to summer are known as “NoCasters”. Starting in the summer of , Fender adopted the name “Telecaster” for this model, and started using new decals after all the old clipped decals were used. Decal attachment was the last assembly step, so NoCasters with a February neck date are seen.

Note that the above dates are accurate for the Esquire, Broadcaster and Nocaster. All Telecasters basically have the same features: Starting in , Fender introduced a new model, the Telecaster Custom. It was the same as a standard Tele except it came in three color sunburst, and the body had a bound body.

Toby’s 1965 Gibson Atlas IV