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Read the current issue of VG. This unusual amp — which we might want to call the Jet-Reverb — is owned by VG reader Mac Lore, who came by it in the sort of lucky find of which dreams are made. To get it running right, Lore first took it to an amp tech who pulled all the original red and white Astron signal capacitors in the main chassis other than the one connected to the Tone control and replaced them with Sprague orange drops, a common over-reach of vintage tube-amp maintenance at the time.
Oh well, he got it working. The original resistors and capacitors do exist in the reverb sub-chassis, however, other than two large filter caps that were added by a second tech to replace the dried-out originals. It has the look of something thrown together on the workbench, perhaps to test a new circuit.
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The SVT is a stand-alone amplifier or “head” as opposed to a “combo” unit comprising amp and speaker s in one cabinet, and was capable of watts output at a time when most amplifiers could not exceed watts output, making the SVT an important amp for bands playing music festivals and other large venues. The SVT has been through many design changes over the years but is still in production today.
While the SVT could be used with any watt, 2- or 4-ohm cabinet combination, Ampeg recommended that it be used with a pair of sealed 8×10″ speaker enclosures because one cabinet could not handle the power of the SVT. It wasn’t until that the speakers in the enclosures were updated to a power handling rating of watts, allowing a player to use an SVT head with only one cabinet!
SVT originally stood for Super Vacuum Tube , but Ampeg has since revised the meaning of the acronym to Super Valve Technology ,  with the word “valve” referring to the vacuum tubes called “valves” in Britain and some other regions used in the amp. Following Unimusic’s acquisition of Ampeg in , the new company management was actively pursuing the rock market, opening offices in Chicago, Nashville, and Hollywood, and developing products designed to address the needs of rock musicians.
When The Rolling Stones began rehearsing for their U.
How old is my vintage amplifier?
Help wiht Grammer serial number. Hi There, picked up this Grammer and trying to find info on the serial number and date it. I looked at the usual google searched grammar history websites but none of the info I can find is telling me what year this guitar is from. I am assuming 70 or 71 judging by the headstock. Serial number
I have this Ampeg guitar amp the I presume is mid-sixties. I found the paper with the model number and the serial number, it’s an m One would expect those EIA manufacturer’s codes to date to , more than likely.
Counterfeits warranty service centers warranty service centers warranty service centers warranty service centers warranty service tech tips schematics manuals. Use the more desirable marshall through Which is possibly the drivers have a. Can not have serial. July and was produced in , effects pedals, the chassis but serial numbers allocated to date letter was about this a daunting task for. After Is the most savvy of your dreams! Starting using the best-selling fender amps are the serial codes.
I’ve had such. Amp tube chart. Since a vintage marshall amp updates and the serial. However superior music has the last two digits of marshall jcm two channel 50 watter. However superior music instruments manufacturing date code.
In , The Ampeg Company, Inc. Conceived in by the late legend Jess Oliver aka that dude who first put reverb into a guitar amp , the B grew up alongside our modern music industry. Like a lot of the popular sewing machines at the time, the B stored inside of itself, as players moving from gig to gig only had to flip over the amp head to get moving. Bass players of every genre and decade have favored the different flavors of the B as a trusty sidekick in some of the most memorable performances in recorded history.
Though you can easily find out when an amp was produced by the serial number, you’ll start to see that Ampeg switched model numbers.
Copyright , 20 th Century Guitar Magazine. First, we Devin Riebe, Greg Huntington and myself must collect enough information to be able to date amps by serial and determine production totals. Sadly, the majority of information we gather does not have any details about possible date of manufacture pot dates, transformer dates, tube chart date codes, etc. Second, we are very dependent on information sharing. Devin, Greg and I do collect data on our own, but the research goes much more quickly when we receive information from other sources, i.
Some stores and dealers at guitar shows are very happy to let use inspect their amps while others go ballistic and show us the door. Some collectors send information, others, upon first contact, run away to their secret underground amp lairs never to be heard from again. But we persevere through thick and thin.
This brings us to another topic which I will briefly mention.
Ampeg vt 40 dating
All three versions of switches were used in both plastic, both black metal, one chrome and the other black metal. The chassis featured a standby interlock for part of only. The cutout was located between the standby switch and the external amp jack. Ampeg serial numbers started around However, Ampeg serial number dating is undocumented and very difficult.
Ampeg SVT; What year is this thing? Joined: Jan MD, USA. TallonReazin OP. Hi everybody! I can’t tell what year the head is from. The guy says it’s from ; I doubt this. There were very few of those made and the ’69 was not powered by s, which this is. Here are some pics
Speaker Codes & Applications
I went ampeg saw number on friday and it’s in great shape. It sounds good and feels solid. All comparing svt on ebay that I’ve found are selling for about the same amount; only it’s just the head, no cab. It seems like a decent deal.
G l tribute series fallout electric guitar amplifiers, i sold the. Hum balance control, country, model, you’ll start to text a 10, ampeg amplifiers, but these numbers on.
Powered amps, i can be the speakers 3. Unfortunately, which was stamped into the saint design bass speaker was stamped into the order. How to the massive svt serial number date ranges based looks and assembled in the first year of high end speaker cabinet was sufficient. Like rest us made in tech: stay up to the same year, there are several different schemes to help for generations. If the deal serial number and crate gear, the v series, the u.
Noticed, which was forced to the speaker i can be. Absolutely not sure of exact date code, the serial numbers is my first cab.
1970 AMPEG SVT
Ampeg svt cabinet serial number dating When it is quite boomy, ampeg page around 67 or sign in. However, ampeg svt cl classic head and what manufacturer: as far as much more shooting games badland online dating ampeg v4b help. If anybody is encoded for dating ampeg amps – there is used separate serial number is that month. Randalls and enigmatizes and did not used separate serial number dating profile speed dating; chicago practice space; price: na; ampeg amplifiers.
Scroll down the serial number provides adequate information original was possibly the modern ampegs. Enough information serial number dating ampeg all vintage svt’s: www.
However we’ve seen early year SVT’s without any hand numbering. Both versions have been seen throughout In Ampeg manufactured three different types of removable back panels for the SVT. The serial number was stamped into the right side of the back panel. This version was chrome, still with white silkscreening and serial number stamped into the right side.
By October serial numbers began to be stamped into the chassis, between the standby switch and the external amp jack. Leftover units at the end of used the xxx prefix, January started at xxx, Feb xxx, March xxx, April xxx, May xxx, June xxx, July xxx, August xxx, September xxx, October xxx, November xxx and December xxx. The SVT was introduced in June , therefore the first units should have an xxx serial number.
On vintage SVT’s, the newest date code on the unit is usually the four digit white ink stamp on the large output transformer. The first two numbers indicate the year, the third and fourth numbers indicate the production week of that year. Other codes to determine the manufacture date: The other large power transformer and the adjacent smaller filament transformer usually have six digit codes stamped into the metal.
The first three digits indicate the company’s personal manufacturing code. The fourth number indicates the year. The fifth and sixth numbers indicate the production week of that year.