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6l6gc str vs 6l6gc forum But these two power amp tubes are the most widespread. Mesa currently has the following types: 6L6 STR 443 - These are the same as the Sovtek 6L6WXT and Electro Harmonix 6L6GC. I know you will find confusing reports about it on the web, some claim the EH 6L6GC is an upgrade of a Sovtek 6L6WXT+, but that is inaccurate, since the two tubes are the same except the relabeled logo. The GC spec is 30W. Bottom end is rock solid. thetubestore. STR443 alternative to the STR440 Chinese Shuguang tube. 6L6 GC STR440 or STR 430 the mesa str 430's will work. The 5881 is a 25 watt tube (plate dissipation) and 6l6GC is a 30W plate dissipation tube. Mesa STR-440 6L6GC (Shuguang) ($60 per pair): Very nice sounding tube - well balanced, big fat low end (arguably the largest of any 6L6GC I've tried). R. Seven String Forum; Marshall Forum; Drum Forum; Everything SG; Some recent developments in both types--the new "Tungsol" KT66 appears to be a (decent) Russian 6L6GC repackaged in bigger glass w/metal base, and not a true kinkless tetrode design. 6CA7. Even if the bias and voltages could be sorted out, the 6L6 will suffer in the distortion and in the power output departments, under the load in the MC75. which one of these would you recommend just to get a huge crunch. The TAD 6L6GC-STR are a copy of the old Sylvania's and sound good. Sep 16, 2024. 2. Re: Tungsol 6L6GC STR Obviously having adjustable bias is ultimately more flexible, but one neat thing about their fixed system is that by simply choosing the pairs with correct plate-voltage it allows many different tube-types to be slapped right in and tried without having to re-bias for every change. even without an intended conversion, if you compare two different characters with a relational operator like , the computer automatically understands that as a comparison between their ASCII codes (ex: B > A will return true) I've used KT-66's for a long time, so long I've forgotten how 6L6's sound 1. The tube store has a review on the TAD short and Tall 6L6. Base, internals, micas and spring clips are virtually identical. I think the 430's are better tubes than 440's but I have no experience Search forums. Members; sahlomonic. You would assume they would sound identical, but they don’t. 6L6GC. I'm going to avoid the NOS/used-but-still-spiffy route and get something currently in production. They sounded better than the stock Sovteks. The base looks like the Sovtek 6L6WXT, Electro Harmonix 6L6GC. Rig-Talk . 99 (or so) Forums. 6L6GC vs. EMG 81X, drop-C. This TAD 6L6GC-STR combines the famous reliability of the american made Philips/Sylvania STR series (also known as MESA 6L6GC-STR415) with the black-plate system of the highly regarded vintage RCA 6L6GC tubes. 6L6GC types can dissipate 30W and handle plate voltages up to 500V. Go. The The Russian-made Tung-Sol 6L6GC STR beam tetrode carries on the Tung-Sol heritage embodying the rich vintage tone coupled with smooth overdrive. New posts Search forums. Thread starter El Fug; Start date Aug 18, 2010; This site may earn a commission from merchant affiliate links like Ebay, Amazon, and others. TAD 6L6GC. These both can handle a lot of plate voltage. These days, it’s usually a choice between 6L6 or EL34 tubes. classic . If it is too hot, the tubes will not sound so great. The 430's are the Sovteks. I wouldn’t run a real 5881 in that amp. Then I saw the second tube from right glowing, causing loud speaker hum. The Tungsol 6L6GC-STR is a good choice for any new or vintage guitar amp. That said, I've had newer-production 6L6GC's draw more current than my old 6L6's, so the bias will need to be checked. Mark V on 90W, ch 3 Mk IV mode. The new "Tungsol" 6L6GC-STR, however, looks VERY much like a short bottle RCA black plate (graphited plates Another consideration is a 6L6GC has higher max plate voltage rating than a real 5881 and those 100 watt heads run at a really high voltage. GE are second place with not quite as much bottom as previously stated, more pronounced mids, and just slightly less top end Not sure any CP 6L6's are going to sound exactly like the winged C tubes. That said, what are the best current production I decided to bite the bullet and order two matched pairs of the increasingly rare & expensive NOS GE 6L6GC's for my vintage MC30 monaural amps, so I could compare the fresh new GE's to the new production Tung-Sol These seem like the best of the affordable 6l6 tubes. Was the STR 387 made on request from Fender, and the STR 415 made on request from Mesa? How about the TAD tubes compaired with NOS tubes, like the Sylvania STR 387 or the JAN Phillips 7581? I bought some NOS 7581 to my Mesa, and was told that it was the military grade version of the STR 387. Built to the same "Special Tube Request" specs of leading amplifier manufacturers of the 1960s, the 6L6GC STR is a Search forums. I have a nice sound going with a pair of SED Black Sable 6550's, but just wondering if what I've heard is true about the 6L6GC's having a particularly warm, distinctive Has anyone compared the several T-S 6L6 variants? I have read favorable comments about each of them but nothing comparing them. By Demondes Started August 30. The Ruby's sounded stuffy in comparison - I think most of the Ruby love is because it's the "flavor of the month". 6L6GC? 07-14-2011, 09:04 PM. Description Specs Rated 5/5 Reviews Back to navigation. bandit2013 Well-known member Boogie Supporter. In my opinion the best sounding available NOS 6L6 out there would be the RCA blackplate tubes. Reactions: bandit2013. The TAD 6L6GC-STR is matched for plate current and transconductance and has the look of an old Sylvania. Guitars and Amplifiers. Big bottles. The clever folks at New Sensor must have been changing the coatings and materials while sticking with the established stamping and assembly. The 5881 valve is a 23W valve. Difference between 6L6 and 6L6GC Difference between 6L6 and 6L6GC. I recently loaded my Mark IIB with the TAD 6L6GC STR Black Plates (RCA Black Plate Copy??)and it sounds amazing. It is not power sag as that would have been evident. Steve Hoffman has said on several occasions that the GE's are his favorite This tube is similar to the Mullard or Tung Sol 6L6GC-STR. This article was Written By. Regards, Gordon. if your amp takes 6L6gc's, any mesa 6L6 will work. Then i tried JJ / Tesla 6L6GC and i immediately liked them over EL34's. I thought about buying the new Tube Amp Doctor 6L6GCM-STR REDBASE power tubes but TAD is having problems coming up with plate current values that match the STR 420's with color code BLU. Search. Just be forewarned the 7581A is a very dynamic tube-it's not bright, or harsh, but dynamic, top to bottom. Anyway here’s the difference between the two tubes; the STR 387 is spec’d as 6L6 C tube which has the power output of 35 watts and the STR 415 is spec’d to a 7581a tube of which it has a slightly lower headroom at 30 watts power output. 3 1/4 in. 3 3/4 in. Tech experts from Seymour Duncan are regularly on this forum, and are clearly labeled as employees of Seymour Duncan. Almost any older production 6L6GC-RCA, GE, Phillips is going to sound good and there were a LOT of them made over the years. The Tung Sol 6L6GC-STR starts to change character at this point. The next best sounding one is the Philips/Sylvania 6L6GC STR which was widely used in the 70's and 80's by all the major guitar amp manufacturer's. The 6L6GC tube is a 30W valve. I really like the less volume before breakup compared to the Jan Philips 7581a'S I was running. I have SED "winged C" 6L6's and have zero complaints with their performance and presentation, but I'm trying to gain an idea on how the GE 6L6GC or 7581A compares to the SED sonically. Very good sound, hard to describe but they sounded bigger, not louder or heavier, but more wide open. But you should not go the other way and use a 6L6, 6L6G, 6L6GA, or 6L6GB to replace a 6L6 GC. Thread starter domct203; Start date May 27, 2007; Help Support The Boogie Board: Mesa STR440 vs. IMO from my own listening tests comparing these two tube types in my hi-fi system. The 5881 doesn't seem to have quite as much sparkle and top and bottom as a good example of a 6L6 tube. Tubes . It could be the difference in the tube impedance more than anything. Thread starter RR; Start date Oct 7, 2011; You want tubes that idle at a certain current range (roughly between 25 and 35 mA, depending on which tube sockets) at the plate voltages for your amp (typically between 460 and 480 plate volts for Marks). 40. 1; 2; First Prev 2 of 2 Go to page. Hope that helps. Comparing the TC50 with the STR445 6L6 tubes to the Mark VII at the 45W setting just did not cut it. S. I was very surprised how warm they sounded with great bass and overall detail. Thread starter FourT6and2; Start date Sep 8, 2016; Prev. Comparison of the two original TAD 6L6-tubes with a jazzy sound done by Markus Fleischer played through our handwired TAD Blackface 45 Reverb amp. EL34 vs. Electrically, the tubes are the same with the 7027A able to stand higher voltage than the 6L6GC. 6L6GT or 6L6GC. The 6L6GC is rated at 30 watts plate dissipation and 450 -500 plate volts. Be sure to check out our review of the Tungsol 6L6GC-STR power tube. Forums ; Perform ; Amps ; Ruby 6L6GCMSTR vs. I recently bought a quad of T-S 6L6GC-STR on the recommendation of Jim McShane, and I am really impressed with them. The 6L6GC came later with a 30W dissipation rating, and pretty much was the tube to choose from that point on. Here's list of mfg for Mesa-Boogie tubes: Mesa STR-387 = Sylvania tall boys 6L6GC Mesa STR-415 = Sylvania 6L6GC/7581A Mesa STR-420 = Shuguang 6L6GC Mesa STR-425 = Sovtek 5881/6L6WGC wafer-bottom (Russian) Mesa STR-430 = Sovtek 6L6WXT+ / Electro-Harmonix 6L6GC Mesa Little of both. And the moment they go TAD 6L6GC-STR Moss was kind enough to include these tubes in my D'Lite 44 kit. Forums ; Perform ; Amps ; Ruby 6L6GC-M-STR or Sovtek 6L6WXT+ Ruby 6L6GC-M-STR or Sovtek 6L6WXT+ By Hellaboogie December 30, 2012 in Amps. I believe that the Sylvania STR-415 and GE 6L6GC(made in Owensboro,KY plant)were built to near 7581A standards. RCA's 7027A was advertised as an uprated top-quality version of the 6L6GC apparently intended to the Hi-Fi market where the common 6L6 was considered too ordinary (vulgar ?). In order to make the Tung-Sol's work, I pretty much came to the conclusion I would have to put some really mellow & warm caps in the Most times if the 6L6 is used as a power tube in modern gear you need 6L6GC's as the 6L6G, 6L6GA, 6L6GB can't handle the voltage. Still not bad compared to NOS Sylvania 6L6GC / STR-415. Thread starter highwaycruiser; Winged C are the closest thing you can get to the old Sylvania STR's. I've notice 2 different 6l6 tubes, the STR 420 & 440. I've never been able to hear much difference between 5881 and 6L6 type tubes, they sound real similar to me. Hard to tell which it is. However the amp works with the GCs and I was wonder if there would be any differences between the GBs 5881s vs the GC as far as performances and sound. Using 6L6GC tubes in an amplifier that was designed for the earlier versions of 6L6 will not hurt anything if you can adjust the bias currents. 95 each) is an in-house design from www. 6L6GC - direct substitute? Thread starter BmWr75; Start date Oct 12, 2024 My specific amps are Allen 20 monoblocks that have the Kegger gain reduction mod. And I put the old GE tubes back. Shuguang made. Still need to test the bias on the Mark V. max 6. looking for a full retube kit. Hello! I need some help about 6L6 GC I have a single rectifier series 2 head, and i want to retube it now. Tube Audio . -----Blonde Tremolux with GE 6L6GC/7581A tan based. By 44caliberKid February 23, 6L6GC and EL34 are both relatively the same output, you can push the EL34 for more with higher plate voltages with the right amp design, but roughly you are looking at 25-30 watts max from each. Thread . JJ 6L6GC in 5150/6505?? By doomsdaymachine October 12, 2011 in Amps. In a lot of cases these days, you’ll see 6L6CG tubes in amplifiers. Some I'm considering are the Tung-Sol 6L6GC-STR, the Svetlana 6L6GC, and possibly the TAD 6L6GC. Really nice. THIS IS THE 25th ANNIVERSARY YEAR FOR THE LES PAUL FORUM! PLEASE CELEBRATE WITH US AND SUPPORT US WITH A DONATION TO KEEP US GOING! The best 6L6 there is and in my opinion, kicks the KT66 in its ass. They have a much heavier mid-tone that is ideal for vintage, rock, and metal music. Edit: Forgot 6L6 GC STR added it and more material at the end with links to GE publications. Tubes. Menu Log in Register Mesa EL-34 STR447 stock tube, what color ? there is also the Mesa NOS Siemens EL-34 STR450, 6L6 STR 440 is one but there is also the 5881 STR425 and last but not least 6L6GC Basics. The 6L6GC tubes we carry work great in any 6L6 tube amps. Dec 21, 2011 #1 ; H. I'm not hating on all Chinese tubes the silver dragons work great in the 6505/5150 high gain type stuff but I'll pass on the 6L6 tubes To my ears, back in my Music Man amp days, 6CA7's are somewhere in between 6L6's & El34's but sounded closer to 6L6's to me. Reactions: dlc1953. While in general the 6L6GC and the EL34 can be interchanged there are are some conditions that have to be checked. 0. Just bourgt a pair of green labeld philips 7581A 6l6 nos tubes and will try and find the sylvania 6ca7 fatboys. They are all in the 6L6 family, with the "GC" being the most powerful of the heap (and handle ridiculous amounts of plate voltage). I was missing that fatter Mark clean anyway. JJ 6L6GC in 5150/6505?? Ruby 6L6GCMSTR vs. Some tube data sheets state it is a beam tetrode and others state it is a pentode. I‘ve found out, that bias makes a lot of difference in a Recto, and grey codes bring it up a bit. com. 6L6 power amp tubes EL34 vs. Amplifier Discussion Forums. A mix of el34/6L6 (Mark IV, Mark III) will be noticed but will sound more like EL34 than 6L6 since the 6L6 is supporting the EL34 in parallel when in If all goes well tomorrow I should be in the market for a quad of 6L6GC tubes. But the NOS tubes are really rare and expensive. Thread starter coyoteblue; Start date Mar 5, 2005; This site may earn a commission from merchant affiliate links like Ebay, Amazon, and others. voltage divider for screens didn't work out (maybe if I had the right resistors?). Pro with 5881/6L6WGB. Both max at 30watts. The 6L6GC can be used with greater plate dissipation and plate voltage - but if you plug a 6L6GC in a circuit designed for a 6L6 it will not yield any more output. Added a Zener string (series 5 The 7581 is mil spec of the 6L6GC. Steppin' Wolfe. That said, what are the best current production 6L6GC tubes. Learn more No love for EH 6L6 tubes, just re-labeled Sovteck, and I usually don't use them. We think this is a better tube and at a better price. Any experience with both? Or other recommendations? Ruby tubes rule, they have been very reliable for me so far. As far as i can see the only difference between them is the The MESA® 6L6 STR-448 is a premium grade 6L6 with a balanced voice and plenty of punch and headroom. I love the 454s in my Rect-o-verb - huge difference from the stock 430s. I should point out that GC versions of 6L6 are the highest plate current of the 6L6 family - they will crank out the most watts if you amp can run at high plate voltages. Mesa/Boogie 6L6GC power tube comparison. Seven String Forum; Gretsch-Talk; Squier-Talk Forum; Marshall Forum; I had a Fender gtr amp that used 6L6GC output tubes , I wanted lower power and a smoother breakup , I got Tellow Jacket tube convertors for the EL84 ! tubes about 30 watts vs 50-60 watts , for a gtr amp this was a great setup , heres a good artical on the 6L6 vs El34 tubes. In a high fidelity amplifier design the circuits Forums. And if they were designed for 6L6GC, then use 6L6GC. 6L6 GC STR 440 colour codes 6L6 GC STR 440 colour codes. reality is that most current production 6L6's are likely GC speced - but I'm sure not going to read up on the brands to see if someone out there is making a low voltage/watt 6L6. Start new topic; Recommended Posts. I think the STR is a modern thing, I don't remember seeing it until the last 15-20 years anyway. 9A) and the transformer rating needs to be capable of the extra load. It's entirely possibly you'll destroy your 6L6Gs (specifically, the TAD's website and JerryP suggests the TAD 6L6WGC-STR but Doug at Doug's tubes suggests the 6L6GC-STR. 6V6 If you had not mentioned playing the bass through your amp, I would say 6v6 would suit what you described. most programming languages convert strings or characters to integers. RCA 6L6 Black Plate vs. These are If you're looking at Svetlana "Winged C" 6L6gc tubes, make sure you get real ones and not the New Sensor ones. " The GC are big bottle 6L6's and put out ~5 more watts than the WGB which are small bottle and put out less watts. KT77 should be somewhere in the middle between 6l6 and el34 and are known for a bigger low end. The 6L6 tube family can get a bit confusing, don't feel overwhelmed. These offer a very different sound than the others on our list. The sound is all there. I only use the TAD 6L6GC-STR or Preferred Series 6L6 GC (basically the same thing) in my vintage Marks because they are fairly similar to the Sylvania & can take the high plate voltage. I doubt that there is a significant difference here. Is there any suggestion of the substitutes of Mesa STR-415 & 416 tubes? By google we know they are Sylvania 6L6 STR and EL34/6CA7. Dusty Chalk I did some testing awhile back between Tung Sol 6L6GC, Chinese EL34BSTR and JJ E34L. Sep 13, 2016 #21 psychodave":9h6c2g6e said: FourT6and2":9h6c2g6e said: Ok so I put some of those STR I've had very good luck, and tone, using the Tung Sol 6L6GC-STR. 6P3S-E vs. The moment I turned it on, I heard some loud speaker hums, so I pulled them out immediately. 6L6WGB vs. And the regular 6L6GC would be like the tall bottle. ) Heater voltage and current is the same for both. Silver Supporting Member. That’s not a bad thing and shows that the company is really working on developing unique products. 0 ma, about 55%. Forums. 1; 2; Amplifier Discussion Forums. I've had no issue getting 120W out of a 4 x 6L6GC amp "reliably. And they sound killer. New Forum Member - Legacy To start viewing messages, select the forum that you want to visit from the selection below. In terms of sound, the TAD 6L6GCM-STR REDBASE produces the powerful but always defined bass Forums. The break up an the clean channel is worth it alone but these buggers really rock on the lead channel too. So what’s the 6L6GC-For new, I think the TAD 6L6GWC-STR come pretty darn close to a GE 6L6GC-my favorite. The kit info said they came with the Winged C's 6L6's but Moss told me he has been leaning towards these for the 6L6 apps. 6CA7 should also work with that amp since they're a drop in replacement for el34 but i would still confirm with KSR beforehand to be safe. 99 and other 6L6's priced $58. Str 441 6L6 tung sol I said I took the str 441 6L6GC out of the Mark V 90 that came stock, and put in the str448 nos EL34's that I got on eBay in the Mark V 90. that I purchased from ebay the other day. KT77 vs. The 6L6GC-STR has ruggedized construction making it especially suitable for use in musical instrument amplifiers. style 6L6 plate design and a shiny black plate material they look like American manufactured stock. I have both and like both. The 12AX7 tube is another one with good new production tubes being made, imho. I like them (7581A's) very much in hi-fi gear. If I remember remember right they exceed the max rating of the 6L6GC. EQ in the loop. The 7027A duplicates Grid #2 on pin 1 and Grid #1 on The result was there was too much emphasis on surface noise and sibilance with the Tung-Sol 6L6GC STR, except on those few extremely well recorded LP's, to make listening to music as rewarding as I know it can be. The Tung-Sol legacy continues with the introduction of the new 6L6GC STR. This tube is similar to the Tung Sol 7581A. The short bottle is a little more compressed sounding. Today I replaced old GE 6l6gc tubes (in good working condition, though) with new matched Tung Sol 6l6gc str. 10-15-2007, 03:46 AM #16. 807 vs 6L6GC One of the main improvements of the 6L6GC over the earlier 6L6's (6L6, 6L6G, 6L6GA, 6L6GB) as well as the 807 and 6BG6G/GA (which are essentially 6L6's with plate caps and higher plate voltage ratings) is that the 6L6GC uses a special 5-layer plate material that has copper in the core, so that the heat is spread out. Switched back to JJ's and SED's and there is a world of difference. Using the old school U. It has eight pins arranged around the circumference of a circle with a diameter of about 11/16 of an inch. Tung-Sol 6L6GC-STR. Same tube as the Ruby 6L6GC-MSTR ($20 each But I do not go directly to 6L6 or 5791 after EL 34 , Vintage Mullard, RFT, Amperex, Telefunken and Vintage Tesla. It is a shame that they were not the stock tubes - it would have given the amp and the Single Rec an even better reputation. Amplifiers . Would you advise for or against JJ 6L6GC Tung Sol 6L6GC STR or I have both the Tung-Sol 5881 and the Tung-Sol 6L6GC STR and they are totally different. By Bronal February 18, 2009 in Stereo Amplifiers & Pre-Amps Share Tube Amp Doctor EL34-STR REDBASE Valves/Tubes. JJ 6L6GC vs. 6L6WGC sounds more hi-fi, brighter, almost acoustic until driven. We I need replacement tubes for my Mesa 2:90 and the current power tubes are the Mesa Boogie STR 420 6L6GC with the color code GR BLU. =C= 6L6GC Mesa STR440 vs. The Preferred Series is intended to improve on the TAD GC. It could be due to difference in bias. 6l6GC / 7581A Schematic Critique I used some peramiters from Keven Ward's 6L6GC amp schematic and posts and papers from DaveG and many others here as well as web sites like valve wizard. However, there is a notable difference when used in the Mark V. Learn more Re: 6L6GC vs 6L6WGB "It depends". The 6L6GC has max plate dissipation 30 Watts, max 500V; and max screen dissipation 5 Watt, max 450V Some guitar amplifiers do abuse the output tubes. fresh EL-34's in their Mark V? I watched a comparison video and other than the cleans sounding slightly fatter with the 6L6's, it didn't seem like much of a difference. I would probably go with 6L6s, given the dual purpose though. It apears that the philips are indeed the same as the 415 str, military spec, and dual halo getters Here the are Does anyone know the brand and model of the Mesa 6L6 str 441 as well as the other Mesa 6L6 offerings (6L6 str 440, 6L6 str 445, and 5881 str 425)? Have any Forums. Also the suppressor grid,pin 1,has to be connected to the cathode,pin 8,for the EL34. Reactions: Darkstar2 and rarebitusa. 6L6 STR-415 vs STR-387. Thread a bit of info on the difference between a 6L6 and a 6L6GC. What's new. Nov 27, 2024. Originally 5881 was a I took an educated guess and biased them at . Search forums. Posted The Tung-sol 6L6GC-STR tube is a true 6L6GC vacuum tube that is rated for plate voltage up to 500V and up to 30 watts of power. b00g13mk2B. Other iterations were just 6L6 (no additional) and 6L6B. In Stock! $ 85. The Redbase 6L6GCM is beefier in build. Tung-Sol 6L6GC-STR . They're still around and known as SED now. Maybe this was because it picks up Physically, this Mullard 6L6GC tube is a kissing cousin the Tung-Sol 6L6GC-STR. I'm curious if anyone has tried fresh 6L6's vs. discussion. Old thread. A completely different plate structure than their other 6L6. one day I ran across a web site that was selling limited amounts of tubes. Just in general reading about hi-fi tube amps I get the impression that the KT88 is better regarded, and also in the many reviews I read of the Elekit before purchasing, most either say the stock EH 6L6GC's are "fine" or the reviewer doesn't even bother listening to them and goes right to the KT88/EL34/etc. Keep bias generally in mind, higher bias tightens the bottom end and bring the feeling of a more aggressiv (or saturated) distortion. So far, tubes that sound great in the Mark V are the SED =C= 6L6GC, SED =C= EL34, TAD6L6GC-STR, Gold Lion KT77. dlc1953. The 7581A maxes at 35 watts. They sound fantastic and punch you in the gut unlike any other 6L6 I have tried. Must be some exhilarating, life-altering work lol, peace. A completely different animal than the TAD 6L6GC-STR. Posted October 12, 2011. Thanks. Of course, these are just general observations and there's more to it than just the tubes. The result is not unpleasing and they are rated for more output than a 5881 or 6L6WGC so by all means experiment. You may want to read that. They are here to help. Not bad in the JP2C but low end is not as aggressive as the STR440. id like to try something different. Sovtek wafer-based 5881's are great tubes as well, in the right amp. The EL34 draws a higher heater current(1. Rig-Talk Discussions. I needed to replace tubes 2 and 3 on my DR. Thread starter Dusty Chalk; Start date Nov 1, 2015; 1; 2; Next. Headroom would be defined as the amount of input signal they'll take before they clip. IMHO-if your amps can run either run Tung Sol 7581A, or Gold Lion KT66-these are most likely going to sound better than other tubes in this lineage, new production or NOS. They have no difference in output than a 6L6GC in the same circuit. Re: Tungsol 6L6GC STR Mesa's fixed-bias does allow for some range within it's window. 6L6GC, 7581. doomsdaymachine. The SED Winged Cs are a great tube and I think the best new manufacture 6L6. First off the Badlander does the 6L6 swap thing well. EHX 6L6GC The Sovtek 6L6WXT+ is exactley the same tube as the EH 6L6GC. The difference is mostly once you crank the amp and get power amp distortion. Advanced Search; Forums; Blogs; Articles; 6AR6WA v. Qty: Add to Cart. The ultimate in musical tone and smooth overdrive, the STR delivers the sound that established Tung-Sol as the benchmark of quality. 6L6 vs. www. Further, some When I first got my MC40 amps they had Ruby 6l6GC STR tubes that are exact replicas of the Sylvania "fat bottle" 6l6GC. I know you know that Mark, but I was just throwing this out there for general knowledge. Come home to put them in and see that the other 2 tubes in the amp are 6L6 GC STR 420. New Enjoy moderating a useless unofficial Mesa Boogie forum that asks for donations and like 20 people are active on. You can go up from the lower rated 6L6's to a GC variant. (Max plate voltage 600 on the 7027A and 500 on the 6L6GC. pretty sick of the stock tubes. 6L6GC i'd be careful, an amp is a delicate balance of design that expects a certain performance For those of you interested in hearing the difference between EL34 and 6L6 tubes in the TC50, check out the video in the link below. Someone in another forum said that the WGC revealed faulty playing more. This is a strong claim, but TAD is sure that they have achieved exactly that. All sounded good. Biggest difference in my opinion between the TS 7581A and TS 6L6GC-STR is not really better bass (although it might be slightly deeper, tighter), but rather an overall more refined top to bottom presentation. Outer 2 STR-445 I think the biggest difference is between the first two. The TAD 6L6GCM-STR REDBASE is the latest 6L6GC designed and built to claim to be the best 6L6 type tube ever manufactured. Get to know them! Power Your Tube Amp with Tung-Sol 6L6GCs. Fred The Tung-Sol 6L6GC-STR is a massive tube option with thick mids. They, too, are also very quiet and microphonic-free. I go to 6V6 next as a little EL 34 tube. Add to list. Music Electronics Forum. If there were no more STR-415's in the world, or for that matter STR-416's (EL-34's) I'd be using the Winged C 6L6's and EL34's Btw I have had the same experience with KCA Tubes, he (Mike) is very smug and can be pretty even condescending. After that i tried TAD 6L6GC-STR and that was the end of my search. In those amps, the sound is gray plate Sylvania 6L6GC/STR-387. There is a key between pins 1 and 8 to ensure that the tube can only be plugged in one way. My standard of comparison for the 6L6GC is the RCA black plate. Amp Central Station . Well this time around it was a different experience. Seven String Forum Search forums. Forums ; Perform ; Amps ; EL34 vs. Gold Supporting Member. I'm much more familiar with 6L6 types though. It was a UP-rated, DOWN-sized 6L6 with rugged construction for the military. 30 watts for the 6L6GC) and supposed to generate less distorsion, though no factual data's were ever published about this. One of the 430's was going bad, blue flame, glowing etc. Tung-Sol 6L6GC "STR" Platinum Matched Duet Power Tubes. Not the real thing. TAD 6L6WGC-STR Brighter than TAD 6L6GC-STR Tonally close to GE “black-plate” 6L6 at 55% bias setting running @ 17W idle Tung-sol 6L6GC-STR Running above 70% bias causes tube to lose definition Idle settings between 15 and 20W (50 – 60%) provide clean & warm sound Overdrives nicely Requires bias experimentation Tung-sol 6L6G Specialty tube Both of these make multiple variants of the 6L6 tube types. Would probably match up well with HRW’ I picked up a matched pair of "good-testing" GE 6L6GC from Brent Jessee recently for $90. All current mfg 6L6 types should also work although due to conflict in Ukraine, new Russian tubes may be difficult to get and will probably be pricey. im playing out of a mesa roadster head. Re: Sovtek 6L6WXT+ vs. They're far too noisy and I just don’t like their tone. The 5881s break up sooner, have less power, less headroom I really like the 5881 set better the 6L6 are louder and tighter. They produce rich low end, tight, full midrange and pleasing top end that is present For decades, people have been discussing 6L6GC tubes while simply referring to them as 6L6. This is a performance-oriented 6L6GC power tube solidly built for catering to the demands of the most heavy-duty bass circuits. Tung Sol 6L6GC-STR Initial Impressions Quick Review « on: April 22, 2012, 08:53:17 PM » The Tung Sol tubes came in the other day, so i dropped em in and biased em at 39. Members; doomsdaymachine. This thread might be a little old, but I was wondering about the difference between TAD 6L6GC-STR which have been also highly recommended and the 6L6WGC-STR mentioned here, when used in the HRDLx and Deville. 9 oxide-coated, umpotentlal ±200 Re: 5881 vs. There is even a power drop with the TC100 but not as dramatic as it is with the TC50. It really offers a distinct choice. - Thom Search forums. For hard rock tones I prefer the JJ's 6L6GC's or better yet KT77's or SED 6L6GC's, but the TADs are good sounding tubes especially for clean tones. 99. Think its time to change the tubes in my Mesa DR. 95% of the time, you can swap 5881's for 6L6GC's and vice-versa. Once exclusive only to TAD (Tube Amp Doctor) we contracted the Shuguang factory in China to produce a massive lot of these tubes to our specs. The company that made the real ones stopped in 2012. There will be a tone difference between EL34 and 6L6 when all the tubes are the same. mroboto Super Member. Our Product Research Team. Markings are in Blue colour on the envelope. I'm very aware of the RCA 6L6GC black plates, GE's, and Winged C's being some of the best of this tube, but all of those are incredibly scarce, if even available anywhere. This is one of the few tubes I’ve tested where I would start at 18 watts idle (60%) and then slightly adjust up and down to find the spot your ears like best. The 6L6 is not correct for some amps in place of a 6L6GC. AudioKarma Audio Forums. 6L6WGB is the designation for 5881, which, in its originally-designed form, dissipates less current than a 6L6GC. Unlike the V:90 el34 swap, where IMHO that was less of a defining character. Both excellent and recommended. Replies 24 Views 3K. Very similar plate design. New posts New profile posts Latest activity. Aug 18, 2010 Seven String Forum; Marshall Forum; Drum Forum; Everything SG; This 6L6 tube is a new version of the popular TAD 6L6GC-STR you might already know. Which is a good thing. Sources one of the JTM 45 forums and Lord Valve. If you take an amplifier designed for 6L6's you can run any type (eg, the Mcintosh Mc30). Sorry about that as I wasn’t being specific as I assumed you knew the difference between STR 415 and STR 387 tubes. Ad Free Member. If you can find Svetlana KT66's ( Groove Tubes used to relabel them as GT KT66-HP, but they no longer make them) 3. Since it was rated for 23W dissipation instead of 19 for the 6L6, it did get used in hi-fi and guitar amps. The two I just a/b’d these tubes in my Mesa Boogie 5:50+ Express. Tung-Sol 6L6 STR New Production You can get these for 40 for a Tung Sol 7581 also sound quite similar. They had some trademark issue with their name. It is a newer, revised version of the TAD 6L6 GC-STR (I reviewed the WGC, a slightly different tube). It seems any tube labelled a 6L6GC should be constructed in a similar way. S/NC KEY 7 AC STR T 12 1 3/8 in. Oct 31, 2012 #13 ; Wally Telefied. What does that mean? The octal part tells us what kind of socket the tube plugs into. The versions that spring to mind are 6L6GC, 6L6G, 6L6GC-STR, and now 7581a. Badass tubes. Thread starter LPSpinner; Start date Sep 17, 2022; 1; 2; Next. Their color-code system is setup from hot to cold but you can combine pairs of any I only use the TAD 6L6GC-STR or Preferred Series 6L6 GC (basically the same thing) in my vintage Marks because they are fairly similar to the Sylvania & can take the high Winged-C are Russian too so there is no "bias" (pardone the pun) between the brands. 6L6 power amp tubes. 6L6 vs 6L6GC: What’s the Difference? But then we have different kinds of 6L6 tubes. Reactions: JPH118 and Mr. So the 6L6GC will give AS long as it's biased right, it will be fine with 6L6GC and probably have a bit more power and headroom. I'm no expert but based on what I've read this is what I think happened. I know the GC is higher volts (460) and the GBs are around 360. But I have a lots of NOS RCA's so I kind of like using them. EL34/6CA7 vs 6L6GC EL34/6CA7 vs 6L6GC. I also picked up a NOS pair of RCA blackplates for quite a bit more. 7027, 5881, are all 6L6 family tubes with the following official ratings and similar if not identical transfer characteristics: I took these out of my old Mesa triple rectifier, it had 4 of these and 2 orginal str 430's in it. Messages 9,097. 6L6 on the other hand is a more robust design. If you mean the amount of power they'll put out - the original GB (the 'W' in this case indicated the small bottle) spec was 23W. Forums; Unread; app_sign_in; The power output of such amps (I have a Bassman clone) is built into the circuit. Anybody have much experience with these? This is my first 6L6 amp so I am drawing on zero exposure to this or any brand of 6L6 tubes. If there are other tubes can replace them and easy to be found. Oct 12, 2024 #2 6P3S-E is tolerant closer to a 6L6GB than GC if I remember Maybe try to find some Mesa Str 420 (grey code if possible). The TAD is very percussive or punchy if you prefer. Prev. Just went to the store and bought a matched set of 6L6 GC STR440. They sounded fantastic, but I knew the amp originally had the RCA 6l6 black plates. I think these are actually a Amplifier Discussion Forums. Racerxrated Well-known member. The TubeStore Preferred series 6L6 are nice. The power transformer can handle it. A modern one that’s probably a 6L6 in a different shaped bottle may survive. You can easily tell them apart: true 6L6 are metal jacketed tubes, and look quite I'm very aware of the RCA 6L6GC black plates, GE's, and Winged C's being some of the best of this tube, but all of those are incredibly scarce, if even available anywhere. Thread starter highwaycruiser; Start date Dec 21, 2011; This site may earn a commission from merchant affiliate links like Ebay, Amazon, and others. Reply. TAD 6L6GC RCA 6L6 Black Plate vs. Make sure they are not Sovtek KT66's, those are really 6L6 WXT+ guts in a big bottle. The Preferred Series 6L6GC construction features: TUNG-SOL 6L6GC- The 6L6GC-STR is a beam-power tetrode primarily designed for use in audio-frequency power amplifier applications. Joined Jan 27, 2011 I've used the 6P3S-E in the silverface Bandmaster head unit and blackface Pro Reverb combo. STR?). After a few weeks having a new set of Chinese 6L6's in my Mark IV I have to swap them out. rusty old memory) 6L6GC is very good tube if you can find some somewhere. These tubes have a lot of headroom and can really drive an amplifier hard. KT88 and 6550 are optimal at a much lower plate impedance than the 6L6 (3-4K as opposed to 5-8K for a 6L6). Fret. Running a 6L6 amp at full chat will burn out 6V6. The 6L6GC is an octal, beam power tube. Thread starter sgtbaker; Start date Jun 30, 2007; Help Support The Boogie Board: 6L6GC STR-448, 445, 443, and 441 DECEMBER; Aug 23, 2024; Tubes; 2. However, you need to know how your amp is wired. Thread starter . 1 of 2 Go to page. This Tung-Sol reissue 6L6GC somewhat resembles a 6L6WGC but performs I'm trying to understand the 6L6GC tube structure and power ratings. The Tung-Sol name and trademark have been acquired by the New Sensor Now the important differences between the 6L6GC tube and the 5881 tube is plate voltages and power dissipation. Each amp runs a pair of 6L6GC tubes. The 2 Channel Rectos were build around these tubes. Whats the difference,Also, do you guys recommend anywhere in the UK to buy from? Any info on pre amp tubes would be helpful too. The 6L6GC does not use pin 1 or pin 6. com - 6L6 Tube Review T They look like vintage STR-420. EL34s are more British sounding, with more midrange First i tried Ruby Tubes EL34B-STR (Shuguang EL34-B). Our top selling go-to 6L6GC tube is TungSol Quick questionI've search this board and can't find an answer so I hope to find some help asap. STR440 6L6GC vs =C= 6L6GC. Joined Mar 17, 2003 Posts 45,685 Seven String Forum; Marshall Forum; Drum Forum; Everything SG; Comparison of the two original TAD 6L6-tubes with a bluesy sound done by Benjamin Geyer, played through our handwired TAD Tweed Bass Four-Ten amp. Thread starter gatya; Start date Jun 16, 2008; Help Support The Boogie Board: AudioKarma Audio Forums. 5A vs. So that’s quite a big difference. Members; I use Tung-Sol 7581As in the push pull class A amp I just finished building, and I do like the 7581A's very much. It's more powerful (35 watts plate dissipation vs. Went back and fourth with the 88’s and decided I was liking the sound of the 6L6GC It does, 6l6 will have more headroom vs el34 and have a grittier distortion typically. At 40 watts I like 6L6 tubes. The cleans on my An original 6L6G cannot necessarily be used in a circuit designed for 6L6GC; the 6L6GC has higher ratings. Most 6L6 amps run at higher voltage than 6V6 will tolerate, except the JJ-6V6S (JJ-6V6GTS) which appears to be a 5881 with a half-power (6V6) heater [6V6 were designed for use in vehicles with 6V batteries]. 6L6GB vs. highwaycruiser Tele-Meister. Menu Log in Register Other Stuff. Woodlumn; Nov 15, 2024; Mark Series; Replies 1 Views 230. The 7581a shuld be here within a week. =C= 6L6GC what does the number after STR mean. Members; my favorite 6L6 in the 5150 is the TAD's. Also in theory, 6L6G's and 6L6GC's have identical characteristics (power-handling capability aside), so the original bias level should sound as good with either one, even though it's way below 70% when 6L6GC's are installed. New Forum Member - Legacy Mark IIC+ Owner FYI these new production Tung Sol 7581 tubes have a thicker and slightly fatter bottom end than the company's 6L6GC-STR's, and they might also have a slightly relaxed top end. Sounds a lot like a quality 5881, warmer, darker. Posted there was a listing for five RCA 6l6 black plates. 6l6's sound more American, with a flubbier, rounder bottom end. FWIW: 6L6WGA is a 5932; it and other 6L6 variants (6L6, 6L6G, 6L6GA, 6L6GAY, 6L6GB) are rated to dissipate lower current than 6L6GC, and probably would not hold up in the amp in question. [john petrucci live at budokan is one of my favorites] with a Would anyone care to share a comparative opinion with respect to 6550 vs 6L6GC power tubes ? (I'm particularly thinking about trying the highly touted RCA Black Plate 6L6GC's). At 50,75,100-130 watts I like EL 34 tubes the best. Similar tubes, and pin compatible. The new Tung Sol's are listed as 6L6G's and are coke bottle shaped, but can handle the plate voltage a GC can handle. Philips ECG STR-318 (STR stands for Special Tube Request and please note that I am not crash hot the 318 number I am just quoting from my ROM. Apr 4, 2022 #8 silver_mica said: Seven String Forum; Gretsch-Talk; Squier-Talk Forum; Marshall Forum; Drum Forum; Everything SG; Epiphone Talk; The output transformer impedance ratio is the biggest drawback. The Preferred Series 6L6-GC (USD $29. The American vs British thing is still kind of ongoing. Search in titles only Search in Tubes (Valves) only. Are sylvania 6l6gc the same tube as str 415. KT66 vs 6L6GC for Quad II Classics. Next Last. In 6V6's the 6V6G, 6V6, 6V6 GT, and 6V6GTA will all handle the same plate voltages and dissipate the same plate wattage. 6L6GC STR TUNG-SOL. I am working on HK250 amp that has 4 6L6GC tubes in it already but the amp requires GBs instead. This includes metal 6L6 and 1614*, 6L6G, 6L6GA, 6L6GAY, 6L6GB, 6L6GC, 5881, 7581, 5932/6L6WGA as well as Russian 6P3SE & 6P3S. Some diagrams clearly show 3 grids, others only 2. . Mark II Tube Questions 6L6 STR 420. Pity. I think the 5881 may match one of the lower power versions of the 6L6. Thread starter Markedman; Start date Jan 28, 2017; Help Support The Boogie Board: Hey folks, I'm looking at stocking some spare output tubes for my MC-30's while there are still some good options available. 1 of 2 Go to page Both tubes have very similar specs and appear to be interchangeable with Svetlana 6L6GC vs SED Winged C. 6L6GC can replace any other 6L6 or 5881 type tubes. 20 to 30 watts 6V6 is my choice, Small Class A at 5 to 10 watts up to say 15 watts two EL 84 tubes I like. The BAD 6L6 frequency shift was apparent, more mid-lows and bass, stiffer and denser. It does not sound as big as the Sylvania --- but has a similar timbre. I do like Ruby 6L6GCMSTR in my amps. So I ordered a new set of 6L6's for it, took the newer looking 454's out and stuck them in my Peavey Triplexxx head, and it sounds 10 times better than with the Ruby 6L6GC's I went into a local music store yesterday to get some Boogie 6L6's and noticed there were some 6L6's priced $29.