Fender blues junior mods it 11 audio tonegeek fender blues junior mods it 11 audio tonegeek vine guitar article how input jacks work fx loop hoffman fender blues junior conversion vine guitar article how input jacks work fender field contentsa mod for the fender blues jrmodifying a fender blues jr guitar lifierfender blues junior rev read more. I am very familiar with the late billms blues junior page, and he would give a technical breakdown of what changed in the circuit from version to version. Blues junior top panel functions blues juniortm introduction the fender blues junior is a truly professional, small, tube amplifier. Fender blues junior iii fsr combo amplifier demo insync. The junior s fendermeetsvox sparkling highend and fat midrange make both single coils and humbuckers positively sing. One 12 fender special design lightning bolt speaker by eminence. Fender blues junior iii 1x12 15watt tube combo amp lacquered. How would i go about changing the fat switchs capabilities. My fender blues junior is from 2003 i think mim cream board so i use pages 2 and 3 of this document. Its been my main gigging amp for years because its just so ridiculously easy to grab and go. Get the guaranteed best price on tube combo guitar amplifiers like the fender blues junior lacquered tweed 15w 1x12 combo at musicians friend. I mainly play at home and was wondering if their was a way to rig up a fender blues jr.
Check out the fender blues junior iii fsr combo amplifier demo page at sweetwater the worlds leading music technology and instrument retailer. Fender blues junior power supply capacitor caps mods. Hoffman blues junior conversion build build pictures and info the schematic, layout diagram and bom for this build are here top of page. When i max all the controls i can barely get any volume out of the amp. Fender blues jr combo v2, v3 and v4 now made in mexico, this is a very popular 15w fender combo amp and i have modified hundreds of them. Jun 15, 20 well the other day i posted about a bias mod i did but now ive gone a whole lot further with my blues jr 3. Lately ive been using my bassman more, but thats because i was unhappy with the darkness of my particular blues jr. I turned on my blues jr iii the other day and it let out a pop, then died. Im thinking that, if that were the case, it would not be a fault of the blues junior amp, as every tube amp in. At the end it has a comparison of the 3 different types. Can anyone chime in on what changes were definitively made. Accordingly, the big f has updated the format over the years, and the blues junior iii, launched in 2010, features a number of additions that have gone down well.
Sparkle circuit mod for crystalline fender clean tones. Well the other day i posted about a bias mod i did but now ive gone a whole lot further with my blues jr 3. Note s texas blues ramon 4 2 5 10 11 in 3 blues 2 doug 4 5 5 7 6 in 3 roadhouse clean jesper hansen 4 7 5 7 10 out 3 am. Database contains 4 fender blues junior manuals available for free online viewing or downloading in pdf. Add our renowned fender reverb, flexible controls, and. This article contains a list of most archived copies of fender guitar amplifier owners manuals available. Fender blues junior iii 15watt 1x12 guitar combo 2010 reverb. The other failure i see on newish blues juniors is the 22uf filter caps leaking. As far as make it boost more, or a different frequency.
Apr 01, 2015 not a fair comparison as the stock fender lightning bolt design by eminence is played from the combo cabinet and the celestion g12p80 and the eminence cannabis rex is played from the. Dec 27, 20 with all due respect ive read a lot of your posts and you know youre stuff this is way too alarmist. I went to fromel since they had already sourced the necessary caps etc so i didnt have to go hunting all over creation. Fender blues junior iii service manual pdf download. I tried swapping around the v1v3 tubes, but this doesnt seem to help. A true classic, with that latenight blues tone found nowhere else but in a fender.
Reverb improvements and improved manufacturability require changes to the pcb and to the bom. The reverb tank is definitely a weak spot, but its most common problem is fixable if you have the time and patience. I went down a rabbit hole with that amp and that was fine, but there are other fun amps. Get the guaranteed best price on tube combo guitar amplifiers like the fender hot rod series blues junior 15w 1x12 tube guitar combo amp at musicians friend. Any fender authorized service center in need of a warranty replacement pcb assembly for this unit should contact fmic tech support by phone at 866 3453642, or by email sent to. User manuals, guides and specifications for your fender blues junior amplifier. Blues junior settings with ascending volume values description posted by rever b maste r middl e bas s trebl e fa t vol.
My blues junior amp about 3 years old has a loud hum heres what i know. Note s texas blues ramon 4 2 5 10 11 in 3 blues 2 doug 4 5 5 7 6 in 3 roadhouse clean jesper hansen 4 7 5 7 10 out 3. Set the bias correctly on a blues junior that has been modified with a billm audio basic mods kit. The blues junior iii amplifier is considered to be field serviceable to the component level. Not a fair comparison as the stock fender lightning bolt design by eminence is played from the combo cabinet and the celestion g12p80 and the eminence cannabis rex is played from the.
Chrome control panel with frontreading text for easy readability. The blues junior is a tube guitar amplifier introduced in 1990 by the fender musical instrument corporation. This warmtoned favorite takes our 15watt, tube preamp and power amp platform and pushes it through a 12 fender special design speaker. Shop for the fender blues junior iv 15w 1x12 tube guitar combo amplifier and receive free shipping on your order and the guaranteed lowest price.
Fender blues junior lacquered tweed with jensen c12n long. I finally turned mine into a 6 v 6 plexi after a few months as a blues junior. Fender blues junior lacquered tweed 15w 1x12 combo musician. Checking inside, it was the 2amp fuse that had blown. Feb 07, 2019 fender, vox, and marshall make fantastic amps. It lists the correct tank for the blues junior as type 8eb2c1b, which is not the same part as the classic fenders. I had the volume on 8, the master on 3, guitar on 10, and the fat switch on. Fender blues junior manuals and user guides, amplifier. I had my own chassis made a a custom pine cab, etc. The reverb signal is summed with the dry signal at c6, which couples to the input of the phase inverter v3. Upon doing so it crackled and the el84 tube on the left started glowing really brightly.
Need new blues junior schematic 103revc telecaster guitar. I own a fender blues junior and recently had to replace a fuse because it blew and the amp wasnt powering up. Fender blues junior iii schematic rev d the tube store. Figure 3 shows a schematic view of the cathode follower.
Pack of 6 stainless steel back panel screws suitable for fender reissue tweed series amps. This supplement contains parts lists and schematics of the new circuitry. Manuals are listed alphabetically by model and have been taken from our archives and conv. Hoffman ab763 one channel build i installed a ab763 board into a junked out deluxe reverb chassis the schematic, layout diagram and bom for this build are here you can see my ab763 project on this page top of page.
Im looking to make it like the beefy midrange of the john mayer two rock amp. Layout and schematic hoffman blues junior schematic and layout pdf newest version uploaded on 0414. Need new blues junior schematic 103revc telecaster. Fender blues junior schematics bias mod bias is set far too hot by fender. I only have 2 big questions, but, mostly, i just want people to post their ideas. I think mim cream board so i use pages 2 and 3 of this document. The blues junior iii amplifier is considered to be field serviceable to the component.
Tube amp schematics, tube amp information, tube amp projects. Blues junior history can be divided into two major categories. From the schematic r51 and r52 are in series and putting a pot on r51 allows. If youve got a blues junior from this period and youve lost the papers this is a nice find. The only infant mortality failure that i can think of on the blues junior is the broken wire inside the reverb tank. Fender forums view topic blues jr iii blowing fuse. Fender guitar amplifier owners manuals current this article contains a list of all fender guitar amplifier owners manuals currently available. I gig and rehearse twice a week with a junior cranked to the gills and i have half a dozen friends in the local blues scene who us em as well. The blues junior is ok but lacks the tremolo and the magic of a dr or princeton. Service manual, operating instructions manual, service diagram, owners manual.
Last night, my friends and me jammed at his place and my blues junior fit in just fine. It had as was described, the perfect, on the verge of breaking up tone. It really is not too loud at all or useless at low volumes. Packing tubepowered muscle to handle gigs and an affordable price tag, the fender blues junior iii combo is a compact solution for vintage tone, big sound, and plenty of headroom for pedals. Worse when volume knob is turned up as compared to master knob. This mark 4 blues junior is night and day different. When i look back now i wish i would have built a hoffman princeton reverb in lieu of the blues junior point to point.
Ltd takes fenders 15w gem and gives it the true vintage treatment with a lacquered tweed covering and a vintagevoiced 12 jensen speaker. Any new production tubes grooves, jjs, tung sol, ehx, sovtek, etc etc run just fine in a junior. Looking at the schematic we see that it is essentially two cascaded discrete opamps, which are then followed by a standard opamp for gain recovery, bass boosting, and buffering of the signal. They glowed their little hearts out in our television sets, car and home radios, hifi systems, and guitar amplifiers, and were crucial components in myriad military applications, from radar technology to missile guidance systems and more. Compact size, professional tone, and traditional styling make the fender blues junior ideal for rehearsal, backstage warmup, and. Fits the fender hot rod deluxe, hot rod deville, blues deluxe, blues junior and blues deville, and 59 bassman reissue. Preamp with three 12ax7 tubes and power amp with two el84 tubes.
Sep 24, 2014 accordingly, the big f has updated the format over the years, and the blues junior iii, launched in 2010, features a number of additions that have gone down well. A replacement fixed that problem, but another arose. Has the original fender speaker in it and 15 watts is more than enough for me. Chassis assy diagram this document contains information of a proprietary nature to fender musical instruments and is submitted to you in confidence and shall not be disclosed or transmitted to others without authorization from fender musical instruments corp. Many musicians have a preference, but lets talk about some of the key differences between these powerhouse am. Before we get into the mods, lets break down the circuit a bit and see what is going on. With all due respect ive read a lot of your posts and you know youre stuff this is way too alarmist. I am very familiar with the late billms blues junior page, and he would give a technical breakdown of. Fender guitar amplifier owners manuals current fender. Fender introduced the blues junior in 1995, and has revised and updated it periodically since then. I recently installed the fromel mods in my 1995 blues junior. Blues junior reverb issues gearslutz pro audio community. Check the continuity at the tank itself by measuring the resistance at each rca jack plug in a jumper cable for ease of access.
Fender blues junior lacquered tweed 15w 1x12 combo. The position of volume pot and the tone stack resembles. Fender hot rod series blues junior 15w 1x12 tube guitar combo. Fender blues junior iv 15w 1x12 tube guitar combo amplifier. If you have a copy of an old fender guitar amplifier owners manual not shown in this archive, wed love to have a copy to post here.
It is aimed at achieving the warm, tubedriven tone common in many styles of american blues and blues rock dating back to the 1950s, while remaining both portable and affordable. So heres where im at got a cannabis rex speaker in there, and. Its golden tones are generated by an alltube signal path using a pair of el84 output tubes and three 12ax7 preamp tubes. Figure 1 is an annotated schematic of the fender blues junior. Dated from the approval signature on the schematic. I didnt see any solid threads out there for the blues junior.
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