Ampeg power tubes. Tube are selected for best tone and performance.

Ampeg power tubes. Shop for the Ampeg Heritage 50th Anniversary SVT 300W Tube Bass Amp Head in Black and Silver and receive free shipping and guaranteed lowest price. Revived from the sixties and ready for the nineties, these easy-to-use two-channel amplifiers represent Ampeg’s quest to provide you the finest instrument amplification systems available. Ampeg Amps Using our knowledge and experience, we've selected vacuum tubes to create Value, Premium, and Ultimate tube kits/packages that will work great in your amplifier. On the tube chat they were usually written in over the 7591A All tubes are selected Based on the original from 1971, the Ampeg V-4B 100W all-tube head embodies the legendary tone of the classic V-4B in a tough-as-nails package, ready to take the stage with the flexible output control and pure vintage Ampeg grind you crave at volume levels ideal for modern venues and applications. To prevent damage during overdrive, modern designs usually add at least a couple hundred ohms in series with the screens. It depends on the health of the transformer. You also get an advanced equalizer and rare features for the tube bass amp. This versatile and powerful bass amplifier delivers up to 300 watts of unsurpassed quality, ofering the classic vibrance of tubes, as well as contemporary features. The Best 6L6 / 6L6GC / 5881 Power Tubes Review. For the 4 power tubes, always use a matched set of 4. RCA U. So to say the least, I'm looking to purchase and switch the tubes. You can add power tubes for even more savings using the drop down menus below. Thru the years the JJ E34L’s with their added punch and articulation 47-278-01 • 10-97 Thank you for selecting the Ampeg Reverberocket Model R-12R/R-212R. Choose power tube pair or quad. The SB-12 was designed to complement Ampeg's Baby Bass upright bass model and ran with 22 watts through a single 12-inch speaker. Tube set includes:4x Tung-Sol 12AX7 2x Tung-Sol 12AU76x Tung-Sol 6550 with Platinum Matching What’s in the Box Ampeg HeritageTM SVT®-CL Amplifier, Power Cable, Quick Start Guide. The initial design employed a 5U4GB tube rectifier, and even though a lot has changed cosmetically, the only change Jess Oliver made to the B-15’s actual circuit was the rectifier. Updated: Starting price is for those of you who want the preamp tubes set only. My question is, what tubes should I get? Company name Order JJ 7027A vacuum power tubes online, in stock and ready to ship! Find reviews, data sheets and specs to upgrade your tube amplifier. Introduction The Ampeg Portaflex® series bass amplifiers brought legendary Ampeg tone in a powerful, lightweight design that bass players around the world, from beginners to professionals, have made the most popular bass amplifiers in history. 4x JJ ECC83S Gold, 1x JJ ECC82 Gold, 1x JJ ECC83S Gold Balanced, 2x JJ ECC82 Gold Balanced, 1x TAD 6550A-STR Matched Sextet. Apr 26, 2009 · It depends on the version of SVT, but the power tubes and the PI/driver tubes all are interactive in the bias process and a failure of one tube can cause a cascading effect. In order to achieve this, the combo comes standard with 3 12AX7 preamp tubes, 1 5AR4 rectifier tube and 2 6L6GC power amp tubes. Like its stablemates in the SVT line, Ampeg packs the SVT-7PRO offers with The JJ 7027A Power Tube is a premium option designed to deliver rich, articulate tone with exceptional clarity and warmth. We have a large selection of 6550 vacuum tubes in stock. The service info we are looking for is schematics with parts lists and specifications of transformers, wiring or PC board diagrams. For over 60 years Ampeg has been providing amplification solutions for professional bass players and aspiring bassists looking for the best bass practice amps. The tubes used in preamplifiers (12AX7, 12AU7, 12AT7, etc. A decade or so later, bass guitar tube amp icon Ampeg was using 6550 power tubes in their legendary SVT bass amps. The default power tubes for all of our Ampeg VL503 kits are the JJ E34L’s however you can use the dropdown to select many more options. Tubes can be an issue with Ampeg amps. Complete tube set for your Ampeg Gemini I (G12) and Gemini II (G15) Includes: 7591A JJ or 7868 EH Power Tubes, Matched Pair 12AX7 (ECC83S) JJ Preamp Tube, 3 pcs. . Ampeg B-15 Ampeg is a Bass amp instrument manufacturing company that specializes in bass guitar amplification and effects. Tube are selected for best tone and performance. A re-bias was required. This dynamically powerful bass amp delivers a thunderous 300 watts of unsurpassed quality, reliability, and tonal flexibility, offering the classic vibrance of tubes as well as contemporary features. Dec 16, 2010 · I need a new set of 6550 power tubes for my Ampeg SVT-CL. Mar 5, 2008 · I want to get more grit from my Ampeg SVT-CL. Oct 14, 2020 · 6550: I don’t use them in my amps, but Ruby 6550 tubes are highly recommended by techs I know and trust, especially for use in amps like Ampeg SVTs that put considerable high-voltage strain on the tubes. These are about the Enter My Tube Amp Parts Store Here Mobile users Enter My Tube Amp Parts Store Here The Tube amp Library of information Click the link above for Tube amp info, Schematics, Board building information, Projects, Mods, Transformer diagrams, Photo's, Sound clips. ARE THE " TOP RCA 6L6GB/GC TUBES. All of the features and controls of your SVT-CL are covered in Sep 29, 2013 · Even though the filter caps are @ 40 years old, Ampeg did select hi quality caps and I've seen most continuing to work in old VT22, VT40, V4 and V2 amps. Mar 5, 2007 · what difference (if any) would i notice if replaced the old (maybe original?) 7591 power tubes in my recently scored early 60's Ampeg rocket 2 with 6L6/5881 of the same vintage? Mar 8, 2017 · I want to rejuvenate an old Ampeg SVT-2 PRO head and am still baffled by all the choices concerning the tubes to use. A bunch of Ampegs from this period, like the Jet, use really hard-to-find Compactron tubes. Sometimes, what appears to be a bias issue ends up being a screen resistor, sense resistor or tube socket contact failure. Oct 15, 2018 · I agree with the others that the tubes might be fine and shouldn’t be replaced unless they’re actually bad. These are the Real Deal 7027a Tubes, Super Rare, and 1980's Vintage back from when Groove Tubes was still Owned by the Late Aspen Pitman. There are hundreds of pages of Tube amp information on my library page. Click to expand May 20, 2009 · I purchased a used Ampeg SVT-Cl U. Tube set for vintage Ampeg "v" series guitar amps: V4/VT22/VT40/V2. Will slay in your portaflex. 1963 B - 15NA circuit stages. Reissued in 1996 through 2007. EL84, EL34, 6L6 etc. 5 pounds. This compact, yet dynamically powerful, bass amplifier delivers a searing 450 watts of unsurpassed quality, ofering the classic vibrance of tubes, as well as contemporary features. If this thing has ever been retubed in the past 20 years, it was with cheap crap tubes. An Introduction to your new Ampeg SVT-2 PRO Bass Amplifier The harmonically rich sound and legendary performance of the AMPEG SVT are redefined in the SVT-2 PRO. e. 12AX7 JJ Preamp Tube, 2pc 12AU7 JJ Driver Tube, 1pc. Includes: 6L6GC JJ Power Tubes, Matched Pair 6SL7 JJ Preamp Tube, 3 pcs. The JJ 6550 is a high power tube with more headroom than your standard EL34 or 6L6 variant. The item “1963 Ampeg Reverberocket R-12R Vintage Tube Amp Blue Diamond, Jensen C12R, Ftsw” is in sale since Tuesday, February 9, 2021. The tubes have a large bulb and produce more power output. Please note that I am pretty much tech savvy and can change tubes by myself. In some cases, more than 30watt power is produced. Complete tube set for vintage Ampeg GS12R Reverberocket II amps version one. Includes: 7027A JJ Power Tubes, Matched Ampeg owners will be delighted to hear the sound of 7591 A vacuum tubes. Tube Drive Control 1/4” and Neutrik Speakon® Outputs Input Peak LED Input Pad and Bright Switch Mute Switch and Tuner Out Tubes are made of glass and are therefore fragile. The power tube circuit and transformers are taken from an old Eico Stereo 40 hi-fi amp. Designed to move air and fill the room, this beast houses a 15-inch speaker, pushing out warm, round bass tones that sit perfectly in The Reverbrocket preceded Fender's Vibroverb (often thought of as the first) by nearly two years. Sometimes a 300-watt, 80-pound head is overkill—that’s where the V-4B steps in. Of course, when it comes time to record, those musicians often take their SVT amp The Ampeg Heritage team chose 6SL7 tubes for period authenticity, as these tubes came standard with the 1964 Ampeg B-15NC and 1966 Ampeg B-15NF. By the mid-60s 7591 power tubes were standard issue, and often with a 7199 driver tube. Your dealer can recommend the best replacement tubes for your amplifier. Tubes can become very hot and are generally operated with high or very high voltages. Includes: 7868 EH (1963-67) or 6L6GC JJ (1968-80) Power Tubes, Matched Pair 12AX7 JJ Preamp Tube, 2 pcs. I've tried a couple of different preamp tubes, but still want more grit out of it. excellent condition, ready for service in your vintage, boutique, or hifi amplifier project. In later years, 6550 tubes were used in popular guitar amplifiers, notably in US versions of Marshalls and various versions of Ampeg. May 6, 2014 · Does it make a tonal difference (I am thinking it would) when using matched power tubes on a cathode biased amp, versus using un-matched random tubes. I would draw a picture, assign a number to each socket on the drawing and mark each tube with the associated number. 6k11 NOS Preamp Tube, 1pc. This dynamically powerful bass amp delivers a thunderous 300 watts of unsurpassed quality, reliability and tonal flexibility, offering the classic vibrance of tubes as well as contemporary features. Jun 1, 2019 · I'm working on an Ampeg SVT for someone. The Power Amp The Jet 12 does not include screen resistors. Disengage the Stereo/Mono Bridge switch [Stereo position]. Ampeg is a Bass amp instrument manufacturing company that specializes in bass guitar amplification and effects. Note: 7868 were on rare occasion subbed in for 7591A in the production line. The package consisted of the four 6550 power tubes and a set of bear claws that fit the tubes. Tubes for the Ampeg SVT CL The Ampeg SVT CL amplifier requires the following components: × 2 12AU7 Type: Whether you are replacing the tubes in your guitar/bass amp; updating your home audio system: re-tubing your microphone or changing out the organ tubes, we have what you need right here. The Ampeg VL503 Combo amps Retube Kits. The current Tung-Sol production tubes are the closest new tubes to the classic American made tubes of the 1960s. Here is 50 watts of power with two 12AX7 Preamp tubes, two 6L6 power amp tubes, and one 12AU7 in the power section. Original tubes other than the rec Jun 27, 2014 · So I got a VL503 for 399 from GC. At the dawn of the 1970s, Ampeg took its cue from the rise in popularity of large powerful guitar amps made by Marshall, Hiwatt, and Sunn. 1968-Mid 70's. With any combination of two power tubes installed, even with the PI and 12AU7 driver tubes removed, amp hums loudly when tubes start conducting. SUPER RARE 7027A POWER TUBES. Feb 12, 2006 · A simple test is to swap the positions of the power tubes and see if the noise changes. A great upgrade for your vintage Ampeg or Gibson amp! Jan 24, 2014 · The big guy the Gemini II with its 15” driver is fixed bias and uses 7591a output tubes as does the smaller model. One of them is fully Sep 29, 2016 · Choosing the right power tube for your amp can be tricky, so Mark Bartel is here to explain what he uses and why. At Sweetwater, we give these tubes our highest recommendation — they sound great! 1 - Dave Hunter Let's examine the Ampeg Jet 12 push-pull power amp and the interesting pair of triode circuits that drive them. Mid 70's-1980. I tested all six 6550s in another amp--all OK except the one that was redplating is dead. The 7027A's are 35 watt mx dissipation tubes, 6L6GC's are only 30 watt tubes and are generally less robust than the 7027's. Add power tubes if needed using the drop down menu below. The JJ 7027's according to their own specs are less than 30 watt tubes so they are not true 7027's and Aug 6, 2004 · Trying to troubleshoot red bias light problem and I cannot read a schematic well--can someone please tell me which power tubes are adjusted with each bias pot on the back?? The rear bank is shifted to the left when viewed from the back of the amp--are those 3 adjusted by the left pot??--and the While the SVT ® is the undisputed king of all-tube bass heads, the legendary V-4B also has its place in the pantheon. At the risk of offending die-hard “tube rollers”, the design of the circuit is going to have an exponentially larger effect upon the tone of the amplifier than any properly working tube ever will. Our Ampeg tube replacement kits are designed for your amplifier and come in different option levels ranging from Value to Premium to Ultimate. Im not 100% sure if the speaker is original - but it sounds great! the checker tolex is beautiful and comes with the cover even though the cover is a bit tateredVery clean - almost mint condition and sounds beautiful. Every kit is configured to provide a specific sound/experience. The JJ KT88’s are a higher power tube with lots of headroom, thunderous lows and thick/aggressive mids. KT88 punch and volume set. Re-tube your Ampeg SVT-CL Amp with our specially selected vacuum tube sets. which exhibited same type of problem so I replaced tube Need replacement power tubes for your Ampeg SVT bass amp? These are the ones you want. As part of the iconic Portaflex lineup from the '60s, the Ampeg SB-12 features the unique flip-top design as seen on other amps like the popular B-15N. Classic Series Introduction Congratulations! You are now the proud owner of an Ampeg SVT-3PRO bass guitar amplifier. Of course, YMMV. At “10” the voltage is at maximum, providing a dynamic, highly responsive tone. The SVT bass amplifier not only harnessed 300 watts of pure tube power, it also introduced a new tube (valve) technology dubbed Super Valve Technology, or SVT for short. All tubes are selected for best overall quality and performance. The Gemini I with it’s 12” driver is cathode biased with smaller transformers, although both amps have the same preamp sections. Taking off the cage, none of the preamp tubes are even remotely microphonic, but both power tubes are slightly microphonic, one more than the other. Tube amplifiers are based primarily on two types of tubes – preamplifier tubes and power tubes. On occasion I've seen resistors going bad in preamp & power amp in this series of amps. With Apex Matched sets, each tube is precisely pair Aug 23, 2022 · Knocking on the amplifier at various places and tube cage yields a somewhat similar noise, but knocking on the output transformer yields the exact same ringing I mentioned earlier in full strength. Known for its rugged construction and smooth response, this tube is the go-to choice for restoring or upgrading Ampeg guitar and bass amplifiers. 6CG7 NOS Reverb Driver Tube, 1pc. I went through all the topics on the board but could not find a clear answer to all my questions. The Ampeg Reverberocket R-12 R was a 1x12 all tube combo with 12 watts. 5AR4 , 5U4GB or No Rectifier Tube (Choose Below) All tubes are selected for best overall quality and performance. This dynamically powerful bass amp delivers a thunderous 100 watts of unsurpassed quality, reliability and tonal flexibility. I'm thinking that I want to remove some of the Oct 13, 2002 · I am in the unfortunate position of receiving a new (early 70's) Ampeg tube amp from EBay and having to replace a tube which broke in transit. When running 6550’s in a vintage V4B, some add 1K 2W screen resistors pin-4 at each power tube R41, R42, R47, R48 to extend tube life. • All-tube design with octal tube preamp Heritage R-12R Specifications 11 for warm, deep tone Heritage R-12R Service Information 12 • Tube-driven reverb and tremolo Selectable modes for ultimate Introduction power control The Ampeg Heritage R-12R • Vintage – 15 watts (triode) Reverberocket is a stunning recreation The Ampeg V-4B 100W All-Tube Bass Head is a remarkable reissue of the legendary 1971 original, delivering the pure tube tone and unmistakable grind that earned the classic a place in bass history. Finally, balance returned to the stage and with it a generation of iconic bass-forward music was Ampeg SVT Classic Gold - TAD Tube Set Tube Amp Doctor replacement tubes kit for the Ampeg SVT Classic, Heritage and AVT AV. It is very robust sounding, with more clean volume than a Fender deluxe reverb. 5AR4/GZ34 is used on: B15N and B15NF (fixed bias), B15NC (cathode biased) 5U4GB is used on: Early B15N, B12N circa 1961-62 (cathode Enhance your Ampeg Heritage SVT-CL with our Premium Full Tube Set, meticulously selected to maintain the amplifier's legendary tone. Ampeg SVT Classic Power Gold - EH Tube Set Electro Harmonix replacement tubes kit for the Ampeg SVT Classic, Heritage and AVT AV. Power tubes work together in a push/pull configuration and should be replaced at the same time with matched or balanced tubes. Choose your power tube type and preference from the drop down menu below below. Original vintage matched pair of Magnavox 7027 (RCA blackplate) power tubes for Ampeg, guild, and other vintage 60s amps. For V4B amps with a vintage power supply, they may or may not stand up to the current draw of the 6550 heaters. 7868 Power Tube for Vintage Ampeg Amps: SB12, Gemini, Reverberockets, Jets and more. Reverb-O-Rocket — OT-151A — use with two 7591 tubes — single 8Ω tap Introduction The harmonically rich sound and legendary performance of the classic AMPEG SVT amplifier are redefined in the SVT-CL. ACTUAL TUBES YOU WILL RECEIVE! Moderate size, significant power and genuine Ampeg Round Sound… everything a serious bassist needs. Why? Three hundred watts of fearsome tube power, along with flexible onboard tone shaping, gives the Ampeg SVT Classic the big-stage prowess that has made it the industry standard for touring bassists who play arena and stadium shows. The 6550 tube became quite popular in American audio amps in 1950s and 1960s due to its linearity and high power output. If you have an infrared temperature gun you can see if any of the tubes are running hotter than the others. This item is in the category “Musical Instruments & Gear\Guitars & Basses\Guitar Amplifiers”. These new amps employed a 14-tube design to generate 300 watts of power in an era when most tube amps generated less than 100. 5AR4 Rectifier Tube All tubes are selected for best overall quality and performance. Point is its using a lot power to reproduce sound there than g string 12 ft. Included are two Sylvania 7591 tubes I got in a working 1960's Ampeg Reverberocket 2. Even Marshall got into the act, using 6550 output tubes in some of their JCM800 and JMP tube amps. They claimed 135W output power. I am listing this in fair condition. New in box:Ruby 7027ACZ Matched Quartet3 - JJ ECC832 / 12DW71 - Ruby 12AX7AC7HG Tubeset for Ampeg V4BH, and V4B   for a powerful, warm and straight forward tone, we recommend the following combination:   Tubeset… Ampeg/Sylvania 7591 tube used in the power section of 1960s Ampeg guitar amps. This dynamically powerful all-tube bass amp delivers a thunderous 300-Watts of unsurpassed quality, reliability and tonal flexibility. 1 Hoffman Amplifiers Tube Amp Forum, Ampeg B25B what power tubes? Tube set for vintage Ampeg "v" series guitar amps: V4/VT22/VT40/V2. Oct 19, 2017 · At the outset, the B-15’s preamp section consisted of three 6SL7 preamp tubes and two 6L6GC power tubes. Includes: 6L6 JJ Matched Pair Power Tubes 12AX7 JJ, Preamp Tube, 3 pcs. An Introduction to your new Ampeg V4BH Bass Amplifier The harmonically rich sound and legendary performance of the classic AMPEG SVT are redefined in the V4BH. As mentioned earlier, replacing these tubes with different rated ones is possible, but the consequence is a completely different sound. The SVT-VR sports two channels across four inputs (two normal, two bright) with 3-band EQ on channel one and simpler 2-band EQ on channel two. These tubes test NOS. Knowing that big bass volume required big power, Ampeg designed the most sophisticated amp of its day: the 300-watt SVT. It delivers 100 watts of pure tube tone, at half the weight of an SVT. MADE BY RCA USA FOR LAFAYETTE. Figured I might as well retube the thing, so what tubes have you got and liked? From what I've read, I'm leaning towards a matched quad of Svetlana or Ampeg SVT Pro 2 Gold - TAD Tube Set Tube Amp Doctor replacement tubes kit for the Ampeg SVT Pro 2 Blue Line Reissue. A great version of the classic tube used in many Ampeg amps - this 7027A Power vacuum tube is the perfect choice for Hi-Fi & instrument amplifiers. All of the features and controls Introduction The harmonically rich sound and legendary performance of the classic AMPEG SVT amplifier are redefined in the SVT-CL. Dozens of the world-class artists depend on the SVT-3PRO to get the job done, day in and day out. Nov 19, 2016 · I have a ampeg SVT 3 With i believe 5 tubes. Premium gold set. Check out reviews and ratings of our 6L6 and 5881 tubes. 6U10 NOS Preamp Tube, 1pc 7199 NOS Driver Tube,1pc. It also provides the classic vibrance of tubes as well as contemporary features. Author Topic: Ampeg B15S power tube substitution (Read 3156 times) 0 Members and 1 Guest are viewing this topic. B15N Portaflex, SVT, V4, 7027A, 7591A, 7868 , and more. We offer the most comprehensive source of parts for the restoration and repair of both vintage and modern Ampeg amplifiers. All of the features and controls of your SVT-CL are covered in 13. Introduction The harmonically rich sound and legendary performance of the classic AMPEG SVT amplifier are redefined in the SVT-CL. Replaced the preamp and power tubes plus several obviously burnt out resistors. It was based on the Ampeg Rocket but included reverb. This last week have noticed a ugly growl on E string from 3rd fret to 7th. TUBE GAIN: The tube gain control varies the high voltage supply to the preamp tubes. Tube Cage, Short, For Ampeg Portaflex SB12 amplifier, 1963-1967 Out of Stock! The Ampeg Classic Series SVT-VR is a 300-watt tube bass amplifier head, a reissue of the classic "Blue-Line" SVT amplifier from 1969. Complete tube set for your Ampeg B15N and B12N including the Heritage series. The PF-20T and PF-50T amplifiers deliver legendary Ampeg all-tube tone and warmth, in the same portable, powerful, and afordable design. This allows a variety of tonal response characteristics from the power amp and replaces the limiter found on typical solid state power amps. Tone Circuit and PEC Modules The vintage portaflex amps utilized Printed Electronic Circuit (PEC) modules in the tone circuit. Last eve I went to use it at a gig - the power turned on, the fan is on, but the tubes did not - absolutely no light in tubes and therefore not a sound of output. We also offer a full line of services including: amplifier repair, speaker repair and re-coning, cabinet refurbishment, and custom cabinets. Amp worked ok for a few weeks then failed again. Tube amplifiers are based primarily on two types of tubes—preamplifier tubes and power tubes. Next, connect a speaker cable from the SVT-4 PRO’s Power Amp A Speaker Output jack to the input jack of the low frequency cabinet(s). You generally can’t swap in different types of power tubes like you potentially can with preamp tubes, unless your amp is specifically designed to take say both EL34 and 6L6. The harmonically rich sound and legendary performance of the Ampeg SVT are redefined in the SVT Classic. If you replace the tubes with 6L6 type tubes be sure to make sure the bias is correct for those tubes. Put simply: the Ampeg SVT is the industry-standard bass amp for large gigs. The power tube will typically be a fixed choice i. This item can be shipped worldwide. 7027A power tubes available for vintage vacuum tube amplifiers such as Ampeg. V4/VT22 use a quad, V2/VT40 use a pair. Complete tube set for vintage Ampeg V4B bass amp. Apr 25, 2022 · Powr tubes / valves for your vintage and modern Ampeg amps. Has anyone been able to find any or have recommendations of what brand I should switch to? Ampeg guitar and bass amp informationAmpeg B-115 1x15 Bass Combo Amp ?? Vintage 70s Thump, Strong Low-End Power For Sale we have this gem of bass tone - the Ampeg B-115, a rare 1970s combo amp that delivers thick, thumping low end with serious vintage character. A. This dynamically powerful bass amplifier delivers a thundering 300 watts of unsurpassed quality, reliability and tonal flexibility, offering the classic vibrancy of tubes as well as contemporary features. When it debuted in 1969, deafening walls of full-stack guitar amps were eating bass players alive. Improper installation, use and handling can lead to serious or life-threatening injuries and/or damage to the products. Right now, the 2nd and 3rd channels are muddy Therefore, this feature was a failsafe mechanism which was used to ensure that a player wouldn't send the power tubes into runaway mode, resulting in a fried output transformer or worse. The specific amp in question is an Ampeg GVT15. Jul 20, 2008 · Not long after that I found one for sale in Philadelphia—a 1973 unit with new power tubes, a new power cord and in rather nice shape for a 35 year-old amp. All of the features and controls of your SVT-CL are covered in Based on the original from 1971, the Ampeg V-4B 100W all-tube head embodies the legendary tone of the classic V-4B in a tough-as-nails package, ready to take the stage with the flexible output control and pure vintage Ampeg grind you crave at volume levels ideal for modern venues and applications. The 6SL7 preamplifier tube closest to the power tubes is used to drive the power tubes. Starting Set Includes: 12DW7 JJ Preamp Tube, 1pc. 2x JJ ECC83S Gold, 1x JJ ECC83S Gold Balanced, 2x JJ ECC82 Gold Balanced, 1x TAD 6550A-STR Matched Sextet. -made almost a year ago and the previous owner had told me that they had only changed one tube since they had purchased it. An Introduction to your new Ampeg SVT-CL Bass Amplifier The harmonically rich sound and legendary performance of the classic AMPEG SVT are redefined in the SVT-CL. AMPEG B-18N PORTAFLEX AMP (1966) Complete tube set for your Ampeg SB12. Answer: You may change the tubes to a different brand. Introduction Congratulations! You are now the proud owner of an Ampeg SVT-VR bass guitar amplifier. The SVT-CL is the descendant of the original Ampeg all-tube amplifier that started it all. Premium gold set. These reliable Sovtek 6550s produce a subtle midrange bump, along with tight bass and excellent top-end extension. The Ampeg V-4B is a two-channel, all-tube, 100-watt beast of an amp head. However you can use the dropdown to select the JJ 6550’s. Re-tube your Ampeg SVT-3PRO Amp with our specially selected vacuum tube sets. The Ampeg V-4B 100W All-Tube Bass Head is a remarkable reissue of the legendary 1971 original, delivering the pure tube tone and unmistakable grind that earned the classic a place in bass history. Feb 22, 2025 · 35W plate dissipation. It can be a full service manual or individual Ampeg model service ino. Although other companies have tried to capture the classic all-tube sound of ’60s and ’70s Ampeg bass heads, no one can touch the SVT. Starting price is for preamp tube set only. Ampeg entered this market with the V-4 in 1970. All tubes have been pre-tested and matched (at no additional cost) on industry-standard testers. I had a single preamp tube on last amp . PLEASE READ THE DESCRIPTION, and let me know if you have any questions. All of our Ampeg VL503 full Retube Kits are designed specifically for these amps. One of my amps is a dumble type preamp and phase inverter into cathode biased push pull 7591 power tubes. This dynamically powerful bass amp delivers a thunderous 300 watts of unsurpassed quality, reliability, and tonal flexibility, ofering the classic vibrance of tubes as well as contemporary features. Used / tested matched pair of 7027A power tubes for your Ampeg , B18N, B25/B25B, V2 and more. Matched pairs, quads, and octets are available Tube set for vintage Ampeg V4B amplifiers. Complete tube set for your Ampeg reissue Reverberocket R12R, R212R, and R50H. The Ampeg ® SVT ® is more than just a bass amp—it sparked a revolution. S. Had to replace the phase splitter at this stage. With only three The Ampeg ® SVT ® line of pro-level amps is synonymous with power and durability—and with the SVT-7PRO, you can add light weight to the list. Usually these amps have white rocker switches. Each set has its own bias network. The default power tubes for all of our Ampeg SVT 100 kits are the JJ KT88’s. I currently have JJ’s but it looks like they are out of stock everywhere. Jul 7, 2007 · I have an ampeg svt-II (non - pro). The SVT-CL is an all-tube bass amp that delivers 300-watts of classic bass tone. 6 hours ago · Its a 66 - and about as clean as you can get. ) are smaller than the power tubes. For 50 cents, Ampeg would also personalize the light-up, lucite logo of any Portaflex. 7199 NO USA Phase Inverter Tube, 1pc. I can't tell what tubes are in there because the chassis has to be removed in order to change the preamp tubes (there are 6). May 31, 2011 · The power tubes are grouped in two sets, the triangular three on the left and the triangular three on the right. Pair of Sylvania 7591 power tubes. The Rolling Stones took these prototype Ampeg amps on tour along with Rich Mandella, playing all guitars and basses through them for the entire tour. Nov 8, 2021 · The power supply also has a circuit that generates the power needed by the tube heaters that make the electrons fly and the Tubes function. What to do???? And any step by step help in checking/replacing tubes would be greatly Reverb Price Guide Estimated Value for Ampeg VT-40 2-Channel 60-Watt 4x10" Top-Load Guitar Combo on Reverb Filter by model VT-40 2-Channel 60-Watt 4x10" Top-Load Guitar Combo 1971 - 1980 Black Includes material, year, finish Filter by condition Good to Mint Mint Excellent Very Good Good Apr 19, 2010 · When first powered up, I noticed a power tube redplating, along with loud hum, even with bias controls set coldest. Feb 12, 2006 · See page 3, performance package. Not rare but not as easy to find as more typical 6V6 or 6L6 and 12AX7 or 12AT7. Anyway, if some of you aren't familiar with these, there are 2 separate sets of 3 6550 output tubes. Since parts of the amp were running at full power for the first time in decades, the theory is that a few parts that were "in the red" got pushed over the edge to failure. In 1969, Ampeg designed the most powerful instrument amplifier ever made. I run it through a 810e cab and even with the gain at max, I don't get as much grit as I want at a low enough volume. Thanks for checking out our massive tube collection! These tubes all originate from one of the largest collections in North America. Just make sure that they are the same type: 6L6 for the power tubes, 12AX7 and 12AU7 for the driver tubes, and 12AX7 for the preamp tubes. Don't see the set you need? Contact us for help. Groove Tubes Sylvania 7027 7027a Matched & Tested Quad for Ampeg V2 V4 VT22 VT40 Big Bottle 1980's Full USA Made FAT BOTTLE Power Tube Re-Tube set for your Vintage Ampeg V series Guitar or Bass Amplifier. Connect a shielded cable from the SVT-4 PRO’s Bi-amp Low Out jack to its Power Amp A Power Amp In jack. Plus, it has a grind and sonic texture all its own—if you love the rich overdriven sound of power tubes pushed hard Ampeg is a Bass amp instrument manufacturing company that specializes in bass guitar amplification and effects. Therefore, they are suitable for Mcintosh Mc-225 amplifiers where the power of more than 28 watts is produced. 2x 12AX7 EH Gold, 1x 12AX7 EH Gold Balanced, 2x 12AU7 EH Gold Balanced, 6x KT88 EH Platinum Matched. This set includes: Power Tubes: EH6550 (Electro-Harmonix sextet) for robust power and sustain. JJ-Electronic and Tung-Sol currently product this 7027 vacuum tube. Purchase Tung-Sol 7027A vacuum power tubes online, in stock and ready to ship! Find reviews, data sheets and specs to upgrade your tube amplifier. New! Buy preamp tubes only or add your choice of power tubes. Oct 17, 2008 · I have an Ampeg VT 22 with 4x7027a's that I bought new in 1976. The seller is “mmguitarbar” and is located in Seattle, Washington. I know enough to fix most problems, keep from electrocuting myself, and keep from causing further damage to the amp. If using the VT-120 in half power condition, the inner pair should be switched with the outer pair from time to time to wear the tubes evenly. AMPEG B22X Jupiter (Not included in sale). For longer tube life, the power tubes (6L6GC) should be closely matched so they can work together, evenly When replacing power tubes, the Whole set should be replaced at the same time. Jul 22, 2022 · Power tubes operate differently to preamp tubes, and so the choice of tubes is also different. The features and controls of Re-tube your Ampeg SVT-2PRO Amp with our specially selected vacuum tube sets. Reverb Price Guide Estimated Value for Ampeg R-50H Reverberocket 50-Watt Guitar Amp Head on Reverb Filter by model Includes material, year, finish Filter by condition Good to Mint Mint Excellent Very Good Good Nov 28, 2024 · I am trying to fix a low B+ problem that I get only when I put one (or both) of the 6L6 power tubes in an Ampeg B-15NC. Years of Production: 1961 - 1963 Tube Categories Preamp Tubes Power Tubes Rectifier Tubes Microphone Tubes Rare NOS Audio Tubes Radio Rodeo Nixie Tubes and Clocks Tubes By Amp Guitar/Bass Amp Home Audio Organ Recording Gear Quick Picks 12AX7 / ECC83 / 7025 5751 EL34 / 6CA7 6L6 / 5881 / KT66 6550 / KT88 / KT90 EL84 / 6BQ5 / 7189 6V6 7591A / 7868 12AU7 / ECC82 / CV4003 12AT7 Aug 5, 2000 · They can distort though, if pushed. Thanks to its Class D power amp and switchmode power supply, the SVT-7PRO delivers a full kilowatt of ferocious, lightning-quick sound into a 4-ohm load at just 15. I've only been working on amps for about 2 years now so I'm certainly no expert. You can read more about 6550 tubes in our 6550 catalog page. So basically, when I remove all the tubes everything is on specs (or close) in the B+ voltages, from the pin8 of rectifier 5AR4 to the plate of the first preamp tube everything is ok. The first B-15s were self-biased and outputted 25 watts of tube power. I see a fair number of players who change tubes like underwear and end up creating new, expensive The default power tubes for all of our Ampeg SVT-II kits are the JJ KT88’s. Includes: 7591A JJ or 7868 EH Power Tubes, Matched Pair (Choose below) 12AX7 JJ Preamp Tube, 1pc. Starting price is for tube set above with 6L6GC JJ power tubes. uswmip jqeen wesaez aqcdkq zvwuaml avdqv pbp smvw cndw iihw