Ampeg vl 1002 tube layout software

Lee goes through step by step instructions, and covers testing, biasing and final setup. Ampeg vl 1002 vl 502 series tube amplifier bias and mod video by lee jackson duration. I stress, this beast is monstrous power, i do not even see the benefit of its big sister, the v4, which it is 100 watt. Due to the large size of each page of the original schematic, each page has been divided into two halves.

Vh140c schematics vl501 schematics vl502 logic board schematics vl502 main board schematics vl503 service manual vl1001 schematics vl1002 schematics vt20 schematics vt22 schematics vt22 1977 schematics vt40 schematics vt40 rev. The following pages comprise the remainder of the document. Tube plates anodes operate at hundreds or even thousands of volts. Discussion in backline started by colonel kurtz, may 9. Vl 1002 musical instrument amplifier pdf manual download.

The ampeg vl502 vl1002 masterseries video has lee jackson showing you how to to service and repair your own amp, and to keep it. Troubleshooting musical instrument amplifiers this document appeared in the 1969 policy manual for ampeg authorized service centers. Service tips 1976 contains service tips for b100g100, sr6, v4vt22 with distortion, and 120w solid state power modules. This video has lee jackson showing you how to repair your own ampeg vl 502 or vl 1002 amplifier.

The amp sounds great, but it just doesnt have that tone i am looking for. All tube amplifier head, 60w, manufactured in late 1960 early 1970. Ampeg v4 amplifier set including speaker cabinet clicking on thumbnail will open larger view. One of the greatest of these innovations came in 1969, when a team of ampeg s designers including bill hughes, roger cox, bob rufkahr and dan armstrong, took on an ambitious new project. Maybe your tech doesnt feel comfortable figuring out what is wrong and it might take him a too much time to do the work. Along with allowing the user to generate the original bass tone, it also features an amp head, a pedal board, tuner and.

Refret and restoration of a vintage 1960 fender jazzmaster. Ampegs artist relations department indicated that since music was changing in the late 80s and early 90s, a musicians needs had. Ive been told by a few people that it is a very underrated piece of gear. Do you have a ampeg guitar or bass tube amp that needs repair or modifications.

If i had some 6550s lying around, id do some clips with each tube. The reissue, like the original 1971 v4b, is every bit a classic, like its more famous sibling and it delivers a similar real tube tone from its four power amp valves and compliment of four valves that make up the preamp and driver stage. The design was adapted from the preamplifier section of the classic ampeg svt. Many of the above schematics are courtesy of joe piazzas backstage. The ampegs front panel is simple and rather sparse. This year i taught myself how to work on amps with my 1992 lee jackson design ampeg head, its a. The 4 pro has a clean tubey sound, but no power tube growl. Many tube amps are based on fairly standard circuits. Its a video which was quickly put together because of popular demand. Jun 17, 2014 in this video, i give a small demo of my 1990 ampeg vl1002. View and download ampeg vl 1002 owner reference manual online. If a coupling cap goes bad, you can get positive voltage on the control grid resulting in internal arching short which can cause horrid distortion in the output signal. Substitutes for the 7027a in ampeg v series amplifiers after messing around with my ampegs for the last 30 years or so i have found there to be many suitable replacements for the 7027a.

To reduce the risk of electric shock, do not open chassis. Ampeg vl 1002 all tube 100 watt amp head demo duration. Lee jackson basically was trying to make a hot rodded marshall, and he nailed it. This is a quality heavy duty vinyl protective cover for a ampeg vl503 amplifer combo. Iirc, the first vl502s and 1002s came with usamade 6550s. This amp has been used a lot with bass in a stoner metal band and does really well.

Vl503 musical instrument amplifier pdf manual download. You are looking at our original new old stock 1979 ampeg v4 amplifier with matching v4 ampeg 4 x 12 speaker cabinet. View and download ampeg vl503 owners manual online. A member here, who definitely knows marshalls, says that the 6550 is the best tube for a marshall amp, period. This is more or less a clone of the head section of the ampeg b15n, known as the portaflex or fliptop. Tube set for ampeg v series v4vt22vt40v2 version 1. In fact, vl series amps give you more gain without noise than. These include everything from lee jackson products, ampeg, crate, fender and marshall amplifiers and general questions about. At the moment v1 12ax7 v2 12au7 v3 12ax7 v4 12au7 there is a rubber strip right on top of the pcb where i would assume the tube type is written but i cant see. Ive heard about pulling the 12ax7 driver if its not being used on fenders is a.

So far mine has not broken down, no signs of weakness whatsoever. To reduce the risk of fire or electric shock, do not expose. The ampeg microvr is a compact powerhouse fully capable of pumping its 200 watts of genuine round sound into myriad live and recording situations. Questions and answers about lee jackson metatronix products. This ampeg v4 amplifier, serial number 162253 with matching ampeg 4 x 12 speaker cabinet, serial number 168305 was built during the magnavoxselmer era in elkhart, indiana, u. Ampeglee jackson vl501, vl502, vl503, vl1001, vl1002.

Browse our huge selection of ampeg products and more at. I have a couple of other projects i need to finish up, so thats next on the list. Schematics, interconnection diagram, block diagram signal flow, pc board layout, parts list dated. Built in reverb, sparkly clean channel, and a 3 stage gain channel. All used four 7027a output tubes to generate a conservatively rated 120 watts, which can often top 140 watts downhill with a good tailwind which is to say, when cranked. Ampeg vl 1002 vl 502 series tube amplifier bias and mod video by lee jackson lee jackson. The led calibration circuits in the newer svt amps add another level of complexity and are a little different to troubleshoot. Ampeg 8651508 hf driver for b410hlf, pr410hlf, svt610. Line 6 is a music instruments manufacturing company that specializes in guitar amp and effects modeling, and makes guitars, amps, effects pedals, multi effects processors, guitar wireless, vocal wireless, music software, recording interfaces, digital mixers, and personal amplification speakers. For additional information about ampeg amps see his website. Vl series vl 501 preamp vl 1002 effects loop vl 1002 power amp vl 1002 pre amp vl 1002 switching vt series vt24 vt40 preamp vt120 series 625d reissues j12t jet 15w r12r reverb rocket 50w r212r reverb rocket 50w r50h head reverb rocket 50w. Ampeg v5 tube suggestions its really hard to find info about it, which makes selling it a little difficult. Therefore, this document is page 1 of the pdf file.

Ampegs artist relations department indicated that since music was changing in the late 80s and early 90s, a musicians needs had to be met in order for ampeg to make a profit. Ampeg bass combo b3158 user manual add to favourites owners guide for the b3 b328 b3158 bass amplifier made in the u. Designed by lee jackson in the 1990s sounds a lot like a jcm 800 when cranked. Each cover is made specifically for the amp listed and has properly positioned handle openings.

You can add power tubes for even more savings using the drop down menus below. There has been plenty of discussion concerning the substitution of this tube on the newsgroup rec. This is why molex connectors shouldnt be used for highcurrent heater wiring. This video has lee jackson showing you how to repair your own ampeg vl502 or vl1002 amplifier. This service manual scan is as provided by ampeg, division of st. An introduction to your new ampeg vlseries amplifier. There is some damn good information in these posts pay attention. This portable, powerful solidstate head in traditional ampeg drag is a pleasant surprise from the second you lay eyes on it to the moment its indisputable ampeg tone hits your ears. Use a small flatblade screwdriver or tv adjustment tool for this.

Ampeg heaven amp schematics schematic amplifier echotwin. The outcome of that endeavor was the 300w super vacuum tube svt. Refer all servicing to qualified service personnel. Take a look at the stage next time youre at a show. In this video, i give a small demo of my 1990 ampeg vl1002. I figured it would also be nice to have someplace with more information and better examples than what i was able to find elsewhere on the net. Electro harmonix replacement tubes kit for the ampeg svt classic, heritage and avt av. The all tube svt classics are about as good as youre going to get but sometimes you dont need 300 watts of earth shaking power. Ampeg vl 1001 tube guitar amplifier schematic contents. Vl1002 musical instrument amplifier pdf manual download.

These pages describe the design and construction of a 1u rack mount bass preamplifier. There are load resistors on the pc board, in at least. I bought one second hand and i dont know if the tubes were installed in the right positions. Home amp tone and effects placement ampeglee jackson vl501, vl502, vl503, vl1001, vl1002 amp head with builtin power attenuator. Sep 20, 2011 ampeg was a very traditional company during the 60s and 70s, and everett hull ampegs owner at that time despised rock n roll music. Vh140c schematics vl 501 schematics vl 502 logic board schematics vl 502 main board schematics vl 503 service manual vl 1001 schematics vl 1002 schematics vt20 schematics vt22 schematics vt22 1977 schematics vt40 schematics vt40 rev.

Im on the interested list, just to have two around, but fuck im broke. Jan 19, 2018 ampeg vl 1002 vl 502 series tube amplifier bias and mod video by lee jackson lee jackson. Ampeg svx is also possessed with excellent tools that make it one of the best software to be used for recording as well as for mixing purpose. One of the greatest of these innovations came in 1969, when a team of ampegs designers including bill hughes, roger cox, bob rufkahr and dan armstrong, took on an ambitious new project. Ampeg was a very traditional company during the 60s and 70s, and everett hull ampegs owner at that time despised rock n roll music. The ampeg v4b 100w alltube bass head embodies the legendary tone of the classic v4b in a portable, modern design perfect for todays players. View and download ampeg vl 503 owners manual online. Here you will find our collection of ampeg schematics. If you want that power tube crunch with lots of versatility 2 pro is the way to go. Im also going to fix plastic connector issue on the heater supply. Bass guitar preamplifier in the ampeg svt tradition. I really cant add much except that the svt 2 pro is the most versatile tube amp from ampeg. Starting price is for those of you who want the preamp tubes set only. Chances are if the bass player is using tube gear it is going to be an ampeg.

This project is my own reimplementation of the ampeg svpcl, a 1u rack preamp that ampeg manufactured between 2004 and 2009. From the unique chassis suspension system to the vintage rocker switches, the attention to detail is all there. Stringed instrument documentsupright electronic bass bb4bb5 promotional and retail. Ampeg vl 1002 vl 502 series tube amplifier bias and mod. Ampeg vl1002 tube guitar amplifier schematic contents. Ive been wanting to try building a tube bass amp for a while and ive been curious to find out why fliptops sound the way they do. An introduction to your new ampeg vl503 guitar amplifier. Ampeg lee jackson vl 501, vl 502, vl 503, vl 1001, vl 1002 amp head with builtin power attenuator. Below is an exciting video documenting the tail end of this build. I am a hobbyist and in no way trained to work on electronics. A fantastic two owner ampeg head and matching celestion filled 412 cabinet. Vl 503 musical instrument amplifier pdf manual download.

Vl1002 power amp vl1002 pre amp vl1002 switching vt series vt24 vt40 preamp vt120 series 625d reissues j12t jet 15w r12r reverb rocket 50w r212r reverb rocket 50w r50h head reverb rocket 50w. Ampeg vl1002 2channel 100watt guitar amp head reverb. Ampeg vl 1002 vl 502 series tube amplifier bias and mod video. Vintage telefunkensiemens all tube mixing console, 18 channel. By michael kohn 072611 besides sunn, when it comes to classic tube bass amps ampeg is pretty much the industry standard. The ampeg lee jackson is an all tube amp that was made in the early 1990s in the usa, it was engineered by lee jackson for ampeg. Ampeg vl503 vl503 amplifier combo vinyl amp cover ampe020. The reverb seems pretty useless, and i figure unplugging it and removing the tube might be worth trying.