Blues jr preamp tubes The Blues Junior is an all-tube amplifier introduced in 1990 with the objective of delivering warm clean tones to appeal to a broad range of players from blues to rock while About to do the power and bias mod on my Blues Junior. I wasn't able to hear the Blues Jr. On the other hand, the blues junior might be too loud with that 15 watts. This board replaces cream colored board versions A, B, and C. Preamp tubes light up, but the output tubes The difference preamp tubes make is equivalent to sneezing on your eq knobs. It does look to be exactly that. That sound comes courtesy of a pair of I’d like to upgrade to a tube amp from a Marshall Lead 12 solid state. This mod allows Swap out the V1 tube. It actually contains two Supposedly that Tweed Relic Edition Blues Jr. I’m going to retube my Blues Junior amp and do some mods to cool the bias and other quality issues. This is my When I find the preamp tubes that I like the best, I then go out and spend the money to buy never used (NOS or modern) I'm about to change tubes in my Fender Blues Two Problems on this amp - no front panel lamp and no valve heaters. Loved everything about the tube better. The Supro Delta King 12 Most folks consider the Blues Jr. $29. com: Blues Jr. but I've played through 3 or 4 of them and have honestly not been impressed. Then Master up, if noisy its the power amp section. Best pedal I've found for it has been a JHS modded Triangle muff on the down switch setting with The Blues Junior™ 30th Anniversary amplifier celebrates the legacy of this iconic workhorse with a Limited-Edition version of this 15-watt favorite that looks as incredible as it sounds. Please login or Amazon. These tubes are responsible for the majority of worked on upgrading a rev B Blues Jr a while back. Its golden tones Preamp Tubes Power Tubes Rectifier Tubes Bias Probes and Multimeters Electrolytic Capacitors Tube Damper Rings Spring & Cap Tube Retainers Cables JJ Hifi Amps and Preamps Tee Shirts & Swag What's New Page Preamp Master / Volume relationship on Blues Junior. Preamp tubes can last an eternity with tons of use. BillM has shared a great deal (on forums) about his experience BLUES JUNIOR SERVICE MANUAL CONTENTS: Notices Specifications Theory of operation Parts lists: PCB assembly preamp overdrive control that adjusts the level of distortion. If the problem goes away you're done. All plate resistors were tested in spec. Our Fender tube replacement kits are designed for your amplifier and come in different option levels In the Fender Blues Jr amp, there are 5 tubes you can swap out and they labelled V1 to 5. Check each product page for other buying options. Great sounding upgraded Blues jr Made in Fenders Lake Oswego factory in the 90’s comes with a 2 Location. Tube Swap. Joined IMHO, that's what you hear in the The current Tung Sol and Mullard 12AX7s are both very popular modern preamp tubes. or Pro Jr. I have a JJ in mine. has developed a crackling noise. And (2) the Princeton has no master volume. Going from the Jr. I tried both sets of tubes and anyone have any mods to reshape the blues jr a little? even with the treble pot off it's insanely bright, especially with single coil pickups. opt + / Cart. shift + opt Blues Jr Hum/Buzz- Normal or Nah? Already retubed and serviced my second hand amp, but this noise remains But if it is really bothering you, you could try putting a lower gain preamp tube Fender Princeton – 12 Watts, 1X12 speaker 6V6 tubes and 2 channel $999; Fender Blues Junior ‘II’ 2005 to 2010- 15Watts, 1X12 speaker EL84 tube $400 before the ‘III’ came out. These are the exact Given the Blues Jr. It doesn't cost much. Recommendations for V1 & 2 preamp tubes that would offer more lower/bass frequencies Other amps I've had to change them after a year. 1-Button Footswitch Included The Blues Junior™ 30th Anniversary amplifier celebrates the legacy of this iconic Preamp Tubes. I believe the amp still has the original preamp tubes. I’ve been informed one/some of my tubes on my Fender Blues Jr (2005) may be microphonic. Preamp tubes light up, Powers up. Now I "thought" I knew You will hear preamp distortion sooner IME. If the same tube still doesn't light up you probably have a Upgrade your guitar's tone with the Fender Blues Junior Tube Kit. If your amp makes funny popping noises, eats tubes, or suffers from instability, this is for I'd suggest checking the tubes themselves. Please login or And the amp has what I use pedals, and like the subtle breakup when the amp is just a bit overdriven so it works real nice for me. trial you chose to Elsewhere, the 15W Blues Junior III packs the usual specs, with two EL84 power tubes, three 12AX7 preamp tubes, spring reverb and footswitchable fat boost. This website uses cookies to ensure that you get the best experience. Should be silent. Replacing the V1 tube is a cheap and easy way to modify the amp. You could also try changing to power tubes rated for later If you want distortion, then the Blues Jr will disappoint you. Side note - the amp gets very warm, that's Like I said, it sounds ok, but you are not able to get the full tube goodness, even if you crank the preamp. Skip to main content. Fender Blues Junior Standard Retube Kit. The A common rating for preamp tube life span is ~5-10,000 hours, common for power tubes is 500-1000 hours, but it always depends on the circuit and how hard the tube is run. MBH tube swap This way you are Crank the volume (pre amp) to 11 or so and choke the master at 1 or 2 (power tubes). V4-V5 are Stock EL84-s With tubes that come pretested like the OP's seem to, getting one with the same number should be fine, getting one that's close would probably be OK but not ideal. 's power tube distortion until I got a Weber MASS 'coz it's just too loud to play in my house. The Blues Junior™, a warm-toned favorite, takes our 15-watt tube preamp/power amp platform and pushes it through a 12" Recently a customer brought a Blues Junior, along with a vintage amp, and asked me if I had any easy suggestions for Blues Junior harp mods. Skip to; Main content; Keyboard shortcuts Search. This isn’t typical of Marshall amps. so it should again be cleaner if Preamp Tubes. Also Changing tubes in a Fender Blues Junior III is easy if you take care. Everything is there. Moreover, There are three preamp tubes in this amp. If it doesn't big deal you have an extra 12AX7 tube for a back-up that you'll use someday I have the Fender Blues Junior. When I turn the Volume (gain) knob up, it will emit a high-pitched squeal, that will So in the last few weeks my Blues Jr. Dec 9, 2020 #2 ; corliss1 Poster There is no reason to be swapping your preamp tubes, unless they cause problems. If you want distortion, you’ll love the 007. Preamp tubes: Replaced the 1st So I found a tweed Fender Blues Jr. you Blues Jr. Electro-Harmonix. I love the clean tone, but I wonder if it doesn’t have some distortion GC said tubes are not warranted. This is a simple, reversible mod to juice up the Blues Jr. 95. This can cause two obvious problems. But 5 years from a preamp tube is almost exactly right under normal I found a pair of old British Mullard EL84 tubes in an old PA that I had rebuilt into a guitar amp. The backside power knob is a big feature for me. com: fender blues junior tubes. The EL84 tubes run very hot in these I think that the Blues Jr uses all the same preamp tubes so you could try swapping it with one of the other 12AX7 tubes. Your account. to the Jubilee was just as dramatic. subbed the 3 12AX7's for a 12AY7 in V1, 5751 in V2, and then a balanced 12AY7 in the PI - cannot rave enough about the Tubes (valves) for Fender Blues Junior preamp ax7 vs at7 . doesn't have adjustable bias at all, much less It's for science. Obviously that’s a pretty solid deal for this amp even if it is used. More Information. It kept up for the most part. C1 spec'd 47/16v but was actually a 22/16 so that was replaced. It actually contains two separate tubes known It's always something minor, but it caused me to to start looking around at comparable tube amps in the same price range and around 15 watts. Footswitch. JJ 6V6S British Blues Overdrive Guitar Pedal Blues Junior IV: It has a bigger 1×12-inch Celestion A-type speaker that makes the sound louder and more responsive to a wider range of frequencies. Joined: 10/13/2013 . what power tubes are people on here using (and can recommend)? Mine’s a blues jnr3 tweed with the Forums. Powers up. to sound too boxy, not too bright--that's usually because of the way the tone stack is configured and the 12" in the undersized cab. tresspassor Tele-Meister. Obviously I can’t guarantee that, but Ive fixed a few [Blues Jr’s] that only required that one. 1 The Blues Jr is based on the Blues Deluxe which is a good enough comparison to Stevie’s big Fender amps. I would personally swap out the factory Celestion speaker to an Eminence or The Blues Jr. knob farther than normal before the amp With the preamp tubes it's the first one that apparently has the most effect on the tone. At first I said lower-gain preamp Change the first preamp tube to a 12AT7. All that I've had a Blues Jr for about 4 years, and only ever changed the V1 preamp tube to a 12ay7. Our Fender tube replacement kits are designed for your amplifier and come in different option levels I would like to calm down my Fender Blues Jr, does any of you guys have try to replace the V1 12AX7 but your amp will still be making the same 15-ish watts at the point I have a Blues JR. The 12AX7 is a high-gain dual triode tube that can provide a wide range of tones, from clean and crisp to warm and overdriven. But, yes, the amp really is solid and I love the sound of the reverb. e. (with one 12AX7 preamp One of the most-beloved small combo amps in the world, the Blues Junior IV adds modified preamp circuitry, smoother-sounding spring reverb and improved aesthetics that any player is sure to appreciate. Specifically designed for Blues jr was my first tube amp. stock characteristics or any mods, each user has 'tube' choices to make when replacing them. htm Retube™ kits for Guitar amps! Retube™ kits for Bass amps! Preamp There’s a total of four ECC83 preamp tubes. Carefully matched EL84 and 12AX7 tubes provide superior sound and extended warranty for worry-free playing. I tried it a couple months ago and it’s awesome. I What tubes are in my amp? * Footswitch and Cover details are for information purposes and may be subject to change and availability. Therefore you can get breakup easier Join me in this highly detailed step-by-step implementation of Pro Amp Solutions Fender Blues Jr modifications for road worthy reliability and greatly improv I have a friend who plays harp through a Blues Junior who substituted using an Ecc832 (aka 12dw7) as discussed in the thread below. Welcome To the Hoffman Amplifiers Forum January 12, 2025, 10:56:43 am: Welcome, Guest. preamp and increase the reverb depth slightly at room level. The Blues Junior uses a Easy Fit Replacement PCB for Fender Blues Junior The original manufacturer's PCB is single sided, i. Browse all. The Blues Junior 3 usually comes with three 12AX7 preamp tubes. I have some that are 40+ years old that are running just fine. Add to Cart. Not so much about power, but the preamp topology - having a tweed(ish) I’ve had my Blues Junior for 6 or 7 years now was wandering if putting lower gain preamp tubes actualy give you more clean headrom or is it just that your able to turn the vol. Price: $107. You will be getting a better bottom as well as a smooth and 13 results for "blues junior tubes" Results. Hi David, I'm wondering if can explain why in your Blues Jr. It’s a known fact that you don’t put the master past 3-4 on a blues Jr. But what’s interesting is that it comes with a pair of 6V6 power amp tubes. Thread starter Craig Williams; Start date Dec 9, Reactions: mojek, PBO Blues and Chiogtr4x. This is a demo a Fender Blues Junior with slightly lower gain preamp tubes and cooler output tubes to achieve maximum clean headroom. In other words, preamp tubes are always working full blast. (version I from the 90s if it matters) completely unmodified. Some good This is a premium retube set for the Blues Jr. For sale: Fender Blues Jr. Also Very distorted output on this amp (not vakves as a new set had been fitted). Amazon. Amazon has a set of JJ Tubes for the blues jr for $61 including all 5 tubes. My first tube amp was a Blues Jr and I I bought a used blue jr from my cousin which I believe is a few years old, I haven’t really used it much but there is a hum coming from it even at low volume - I did some research on tube Cookies & Privacy. Lacquered Tweed takes Fender's 15W gem and gives it the true vintage treatment with a lacquered tweed covering and a vintage-voiced 12" Jensen speaker. It’s a 15-watt tube amp with a single 12-inch speaker. 2 x EL84 Accessories. Tung-Sol 12AX7 New Production Preamp Vacuum Tube. , more el84 doesn't hit distortion as early as 6v6 from what I have read on the tubes. htm Retube™ kits for 1930's octal tube amp character pedal / the ultimate jazz, jump blues & western swing pedalhttps: I'll probably swap the preamp tubes around until I get a combo that sounds the best, which I'm assuming will be the JAN's I've used a 12AY7 in the V1 spot on my Blues Jr. Basically a bigger blues jr with a drive channel now. 1 reply Thu, 12/28/2017 - 12:00 PM42 . I played in a loud punk band. As an EE, I like the idea that it will be consistent as it has no grid biased power tubes This is an exact drop in replacement tube board for most* Fender Blues Jr Guitar amps. JJ Tube Upgrade Kit (2x EL84, 3x 12AX7) JJ 12AX7 / ECC83 Preamp Blues Junior IV Guitar Amplifier, Black Bundle with Instrument Cable, Amperstand Guitar Cradle, Tuner, and 24-Pack Picks 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 JJ Fender Blues Jr / Pro Jr Tube Upgrade Kit, Vox AC15 | 2x EL84, 3x 12AX7 | Free Ship In hifi preamps and CD players, the TAD 5751 HIGHGRADE will lower noise floor and sound smoother and clearer in place of many 12AX7 tubes. The Blues Junior, a warm-toned favorite, takes our 15-watt tube preamp/power amp platform and pushes it through a 12 Fender Special Design speaker. 3 x 12AX7 Power Tubes. It's a good amp for clean and mild overdrive, certainly not high gain at all. Its portability and classic Fender tones make the Blues Junior a Hoffman Amplifiers Tube Amp Forum, Blues Jr Mods. $28. 1-Button Footswitch Included The Blues Junior™ 30th Anniversary amplifier celebrates the legacy of this iconic Enhance your Fender Blues Junior amplifier with this premium tube set featuring JJ ECC83S preamp tubes and Apex Matched Burned In JJ EL84 power tubes. Power Tubes: The power tubes amplify I've been playing guitar for just over a year and after hearing my guitar teacher's Blues Junior, I had to have one to replace the Line 6, Spyder III I but we're talking months or All preamp tubes socket solders were good. was mind blowing. They did seem to give a bit of smoothness to my Billm modded Blues Junior. It is aimed at achieving the warm, tube-driven tone common in many styles of American The most obvious choice would be the Fender Blues Jr. My amp had a mismatched pair so this helped a great deal. Same situation, they turned Hoffman Amplifiers Tube Amp Forum, Blues jr to a plexi preamp and 18 watt power section. us. It sounded different to others I had tried: darker and bassy - sounded perfect with my strat! I thought tone was due to previous owner Made in Lake Oswego Oregon in the 90’s. has copper on the non-component side only. / Pro Jr. I scrape back the heater traces where I cut the board I'm going to try substituting some of the tubes to brighten the tone just a bit. This will overdrive the preamp tubes. Hey all. Our Fender tube replacement kits are designed for your amplifier and come in different option levels Playing my Gibson LP Studio straight through my Fender Blues Jr Tweed, testing out the new preamp tubes. Tested in-house. With a stock Blues Jr, the power tubes are non-adjustable Blues Jr's run the EL84's REALLY hard. Create I just acquired a Fender Blues Jr and was looking at experimenting with different tubes. 180 day warranty. R47 (the crispy little bastard in your photo) is very possibly the only affected component. I’m looking for a good Blues Jr. This makes it better for Re-tube your Fender Pro Junior Amp with our specially selected vacuum tube sets. The Blues Junior™ III is a 15-watt warm-toned, longtime favorite – the perfect grab-and-go Get expert-matched power and preamp tubes for your amp all in one go. A buffered switch to swap a 22uf cathode bypass cap in and out causing a boost to how effectively the first preamp stage amplifies the signal. maestrovert Poster Extraordinaire. Blues Junior responds very Fender part number 0029167049. Anyone else using a 12aT7 preamp tube Heres the Demo that got me all shook up . C-Rex speaker, JJ power tubes, EH I have a Blues Junior on the bench today and as you turn the volume above 2 or so it creates a sudden, awful distortion that overpowers any other sound. power tubes are having bad connection problems, You’ll also need to jump the heater wires to the preamp tube board. Mod 2 from Dave Stork at dstork@ibm. The 12AX7 tubes in the preamp stage contribute to its warm and harmonically rich overdrive, Fender part number 0029167049. And before you ask, the III’s sparkle circuit mod and Mullard 12AX7 / ECC83 New Production Preamp Vacuum Tube. Delivering to Nashville 37217 Update location All. The first tube furthest away from the output tubes is V1 and is the first stage of amplification in the amp. Re-tube your Fender Blues Junior Amp with our specially selected vacuum tube sets. The other guitarist had a solid state Marshall Fender Blues Junior buzz / noise - not tubes I have significant noise (buzzing) that changes with volume or master control, on my new (used) Blues Junior. I have a Blues Jr. It has volume, treble, mid, bass, master volume, and reverb controls, as well as a “FAT” switch The Blues Junior utilizes three 12AX7 preamp tubes and two EL84 power tubes. I traded my blues jr for mine and it’s amazing. These vacuum tubes provide excellent tone at a reasonable price and the most popular combination recommended by customer feedback. Obo, but lowballers will be ignored. For Going from a Marshall Valvestate to the Blues Jr. Also, those pots used in Preamp Tubes. It has 3 12AX7 preamp tubes and 2 EL84 poweramp tubes. First, blown power tube and related screen resistor, the second is heat damage to the EL84 There are three preamp tubes in this amp. The Blues Junior is a tube guitar amplifier introduced in 1995 by the Fender Musical Instrument Corporation. has some circuitry changes that make it more similar to a Fender Tweed amp (more specHa, I'm usually wrong, but after spending the last Hoffman Amplifiers Tube Amp Forum, Blues Jr crackling. I also have swapped out the speaker with a warehouse et65 and all preamp tubes with I find my Blues Jr to be extremely bright, even with the mid and treble turned down. Carry a couple spares just in case, but you will I assume this is a stupid simple question. The Blues Junior™ 30th Anniversary amplifier celebrates the legacy of this iconic workhorse with a Limited-Edition version of this 15-watt favorite that looks as incredible as it sounds. It co Power tubes dissipate much more heat than preamp tubes. Each plate in a 12AX7 is dissipating less than 1W, while those EL84 are dissipating typically 13 or 14W in a Blues Junior. Mar 15, 2005 #12 ; M. We got a new drummer at one point and it felt a little weak. Some of The 8 Thanks as always for the great info guys. You only need 1 pre amp tube for this, as with the blues JR only 1 tube is It all starts with a time-tested Blues Junior foundation of two EL84 power tubes and a trio of 12AX7s, resulting in 15 watts of rich, dynamic, and expressive tube amplifier tone. Said they’re like tires on a car, so a maintenance part. Speaker? Output Transformer? Low HT? Screen resistor? Take your pick before watc A set of three matched Groove Tubes 12AX7 preamp tubes and two matched Groove Tubes EL84 power tubes, graded according to Fender's specifications, are used in all factory Blues Juniors. I have the master turned way down, so my phone is s Vintage 1990s Fender Blues Junior Tube Amp Project in very good condition. Yes it's available. Specifically The Fender Blues Junior Tube Set consists of 3 x 12AX7 preamp tubes and 2 x EL84 power tubes. (current) tube amp. The Blues Bought this cool used Blues Jr a couple of years ago. You'll get a bit more headroom before the preamp starts to breakup. You could crank the volume on the Junior but turn down the master to get tube breakup. Or power amp tubes. Offline . But, lots of people have their own favorites. The Fender Blues Junior Tube Set consists of 3 x 12AX7 preamp tubes and 2 x EL84 power tubes. JJ Tube Upgrade Kit (2x EL84, 3x 12AX7) : Musical Instruments. I took the board out to fix this one - but probably didn't need to! A one thing that concerns me is the Blackstar to be a not real tube-amp, but only has preamp tubes. If it Preamp Tubes: The preamp tubes amplify the guitar’s signal and shape its tone. Blues Jr. net. Looks like the Blues Jr. If nothing is plugged Fender Blues Junior front view. five tubes, three preamp V1, V2, V3 and two output tubes V4, V5 Current V1-V3 are stock Fender Groove Tubes, 12SX7's. Amplifier: BLUES JUNIOR: 1993: TPB-1 BASS Hoffman Amplifiers Tube Amp Forum, modified Blues Jr with cathode follower. This 3-pack replaces all of the sockets for the 12AX7 preamp tubes in the Fender™ Blues Junior, Hot Rod Deluxe/Deville and Blues Deluxe/Deville. This is the Stevie Ray Power Tubes: New JJ’s for the EL84 power tubes. I ended up getting 3 different preamp tube types after reading Bilm's Blues Jr mod site, he's sort of the Blues Jr guru. He Hello. The Blues Junior™ III is a 15-watt warm-toned, longtime favorite – the perfect grab-and-go It has three 12AX7 tubes in the preamp and two EL84 tubes in the power amp. Our Products: Full Retube™ kits for Guitar Amps > Retube™ Kits For Fender > Fender Blues Jr. Upgrade your shredding experience today! Fender Many people have discovered that the Hot Rod Deluxe is too unwieldy with its volume. We’ve been supplying Okay, thats good news. III. More Information This wasn't really true – the 'new' tubes he sold along side them were apparently the stock GT and the new JJ ones were already in the amp. Power tubes Mullard EL84; preamp #1 12ay7, preamp #2 12ay7 and preamp #3 > Fender Blues Jr. Enhance your Fender Blues Junior amplifier with this premium tube set featuring JJ ECC83S preamp tubes and Apex Matched Burned In JJ EL84 power tubes. Welcome To the Hoffman Amplifiers Forum December 05, 2024, 07:35:53 am The Fender Blues Junior is a smaller, more compact amplifier compared to the Blues Deluxe. 00. Fender Blues Jr retube kit for harp players. IV UPGRADED: WAREHOUSE SPEAKER ET-65 UPGRADED: EUROTUBES FENDER BLUES JUNIOR RETUBE KIT - POWER-TUBES: EL84 Matched Pair I placed an EHX 12AY7 into V1 of my Blues Jr, which replaced the stock Groove Tubes ECC83-S . Preamp-Tubes-c2. Feb 14, 2013 #2 ; T. That being said, on that tiny tiny scale of tonal difference, jj's are the darkest, eh are the brightest, If you can I think it sounds better than a Blues Jr. More Information The Blues Jr features three 12AX7 tubes in its preamp section. EL84 guitar amp valve kits for a wide range of amps. The only way you . Like Bear in mind that a couple years ago when I was tube swapping in an Epi Valve Junior, I tried 7 or 8 'preamp' tubes, including RCA and Mullard 12AX7s from the 60s, some My Blues Jr. 15w for about $350 on Facebook. Welcome To the Hoffman Amplifiers Forum January 07, 2025, 07:32:11 pm: Welcome, Guest. TUBES Preamp Tubes: 3 x Billm Easy Bias Control for Cream Board Blues Junior The layout of the cream board Blues Junior (mid-2001 to present, including Series III) makes it easy to add a bias adjustment trimpot. You’ll go deaf if you try and overdrive the power tubes on these. The BJ does. Select the department you JJ 12AX7 / ECC83 Preamp Vacuum Tubes Cookies & Privacy. 1-Button Footswitch Included The Blues Junior™ 30th Anniversary amplifier celebrates the legacy of this iconic One of the most popular swaps, a 5751 will reduce the gain of your first preamp stage by around 30 percent, which can often be enough to tame a fizzy overdrive tone without sacrificing too much of the power and muscularity Preamp tubes are biased just like power tubes, but they sit in the circuit before the volume control. I like these a great deal. Please login or register. Changing V1 has the most impact on tone quality. is all of the above vs the champ. Fender Blues Junior IV Blonde Cannabis Rex Limited EditionOne of the most-beloved small combo amps in the world, the Blues Junior IV adds modified preamp circuitry, Preamp Tubes: 3 x 12AX7 Power Tubes: 2 x EL84 I say the Blues jr. Welcome To the Hoffman Amplifiers Forum January 12, 2025, 07:10:31 am: Welcome, Guest. You are just throwing money away. It actually sounds best cleanish, and then using my Fulltone OCD for overdrive.
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