Hot rod deluxe bias. Basically it's a design error.

Hot rod deluxe bias The circuit is based on the Blues Deluxe, with a few changes, so the amp is primarily a blues amp. 068A) by the plate voltage (420V). Both types will drop the amp’s gain factor substantially – the 12AU7 moreso than the 12AT7. do the old emergency shutdown Also, is there a "Fender Hot Rod Deluxe" tube-replacement-kit? to bias i use a tool called a weber bias rite. i am following instructions here and am being very careful but i can Fender Hot Rod Deluxe Rising Bias Problem. Hi, thanks for reading my post. It was like 48mV from the store, Because the Hot Rod Deluxe is the world’s most popular valve amp [citation needed], I get a Hot Rod Deluxe Repair arriving quite regularly. Start new topic; Recommended Posts. I was completely unable to get a clean sound out of it even with it fairly quiet (it was miked through a PA so not loud on stage). So last night, I put the new tubes in: 2x JJ 6V6S, 2x JJ ECC83s (12AX7), 1x JJ ECC832 (12DW7) in V2. Auburn Deluxe Radials. Jackrob. Messages 259. Also for: Hot rod deluxe - rev c. I recently found a website dedicated to the Hot Rod Deluxe. A good biasing can make a big difference, however, it's just not a mandatory thing. It apparently has a different tone stack than the stock HRD. and it was a mod recommended from a cool hot rod deluxe web site I found. I originally documented it on the Amp Garage forums, but you had to be a member to view the documentation, so finally got around to sticking it in a publicly accessible post. Members; Wynn's is first generation, and the latest, the Hot Rod Deluxe IV, has three switchable channels. The first stages are classic Fender except the BD uses a 22uf cathode bias cap while the HR uses a larger 47uf, which will create a bit more low end. I ramped it up to about 68, but ended up back around 62. What is Hot Rod Deluxe bias? A bias setting between 30 to 45 is best for the JJ 6V6’s. By Nikolaos Gr August 2, 2011 - 6:09 pm. Thread Tools. The bias supply voltage is solid at -50V. Watch as I explain how to fix this. I started out trying to clean up some scratchy pots and now I want to try and resolve this noise issue. More sharing options Members; FeelTardy. I hear they ship at about 30-35% usually but mine was more like 40% plate dissipation! Yes you can. Follow The hot rod is one of the amps I use frequently for experimenting, and I haven't tried 6v6s in it yet, maybe I should. It is, in reality, a "hot rodded" Fender Blues Deluxe. If you bump it up to about 40ma it gets sweeter. I Fender Hot Rod Deluxe Review any PC based amp out there. Discussion in 'The Hokey Ass Message Board' started by 4speed411, Jun 3, 2019. Hope that helped! (also if you look in the base of the cabinet there's a box at the bottom of it and sometimes when . I'm thinking of simply separating the path to ground of each 6L6 and putting another 1 ohm resistor. The acceptable range is 60 to 70Mv. To receive your copy of How To Bias a Fender HotRod Deluxe just click on the ‘add to cart’ above. My hot rod just started having some issues. ChrisDowning. can you convince me this is worth keeping? I'm well aware that the Hot Rod series is the best selling of all time, it's used everywhere and pretty versatile. Jun 30, 2017 #1 i bought a used HRDiii a few months ago for a FANTASTIC price which is in The bias probe allows a safer measurement of the plate voltage than a direct measurement, for sure. I just received a pair of Groove Tube KT66HPs and put those in. deftgala Member. I figured a simple tube replacement / bias job would be all this bad boy needed but this is not the case. My Hot Rod Deluxe is set at 61 mv. Also with mine the outputs had gone in it so i had to have them replaced. Also, be darned awful careful in Adjusting the bias on a tube is a great example. Hi all I recently bought a used Fender Hot Rod Deluxe, not a "III," but the older one. and even some Fender amps (early versions of the Hot Rod Deluxe/Deville and Blues Deluxe/Deville, for example). I love the amp and every channel. The Hot Rod Deluxe IV utilizes a high-quality output transformer, which contributes to its signature tone and ensures reliable performance. I've been through a lot of options over the years for that, Jazz Chorus, Deluxe Reverb and so on but came across the HRD IV. View and Download Fender Hot Rod Deluxe operating instructions manual online. I did a gig at the weekend and was given a Hot Rod Deluxe to use. 50% cotton and 50% My Hot Rod Deluxe is set at 61 mv. com. Now the amp gives that rhythm tone on it's own, maybe even the but apparently the Yellowjackets "strip the bias" of the amp & run at Class A. comMSG Scream 808. How to Bias a Fender HotRod Deluxe: Get your copy Today. But, you can substitute others in without fear; two examples would be 12AT7 and 12AU7 tubes. I do like the bias adjustment, really helps get the amp sounding good, factory bias is the worst I found hot or cold definitely sound better on the Hot rod . (the originals use a different circuit) and in the Hot Rod Deluxe and Deville. The Hot Rod DeVille is the standard for gigging guitarists worldwide and the ideal amp for POT - Fender™ BIAS POT 10K LINEAR, SCREW Original Fender™ 10K linear, screw, bias potentiometer. The kit contains a JJ 12AY7 for V1, a standard ECC83S for V2 and a current balanced ECC83S for the phase inverter in V3. Then I noticed one tube was much hotter than the other. Did all this with the help of the "Unofficial Fender Hot Rod Deluxe Owner's Guide", since I am new to tube amps and their issues. A Check out some of the hot rods at the Bonneville Salt Flats such as a 1934 Ford three-window coupe, 1934 Ford five-window coupe, 1933 Ford three-window coupe, 1933 Ford Pickup, 1936 International Re: Fender Hot Rod Deluxe with 6V6s tubes dont use any other 6v6 other than jj in that amp. I auditioned the ML 212 with a humbucker-equipped Fender Esquire reissue, a but with a signature Fender Tele Deluxe, a Chertoff Custom guitar, a pair of road-worthy amps, and a Channel switching problems are common on many of these Fenders - Deville, HorRod etc. They have different AC voltage amplification factors (μ), different bias ranges, different plate resistance needs (rp), different transconductance (gm), different internal resistances (Ri), etc. My latest band rig was the clean Hot Rod Deluxe with a Marshall Guv'Nor for distorted rhythm tone and an overdrive for leads. I do all of my heavy and rock stuff through a Mesa but the volume of the clean channel on it is too quiet so I decided to use a 2nd amp for it cleaner stuff. There is a lot of info out there, but one thing not addressed, is how an amp is affected sonically. 0 Likes. D3 diode test good D4 R3000 diode test good D5 R3000 diode test good 470 plate resistors test good 1. Also there is more headroom on the 93 than the reissue - while the loudness at 3-6 on For more info, Subscribe to this channel, join us at facebook. not the cable, this has been ruled out quickly), I figured it was tubes (have owned the amp for about 15 years, play it low volume, relatively no gigging) so I swapped out all V1-V5 (preamps with EHX The Fender Blues Deluxe Reissue is easier to bias than the original amp as Fender have fitted a bias pot. He’s not necessarily too fussed about the inner workings of it actually being exactly the same of a hot rod deluxe, what’s being said here is that I just want to replace the insides of the chassis with an amplifier that is going to be reliable, just like the original hand wired versions Customer: The bias voltage on my Fender hot rod deluxe amp measures 7. The Hot Rod Deluxe has been in production since 1996 and has gone through three different iterations before 2016. Sound is raspy and distorted Technician's Assistant: When did this audio problem start with your Fender? Customer: yesterday, played fine the day before Technician's Assistant: Is the audio working with headphones or external speakers? Topic: Tubes for Fender Hot Rod Deluxe; Marty Nemanick . I have Start with the highest range and rotate the range knob down until you obtain a useable reading. According to the manual, the bias setting at TP30 should be +60mv. world. They are decidedly cold to prolong tube life. So I attribute it to a anti-Fender bias by a vocal minority. PorscheDad. Long story short: Went with the recomendation of Re: Fender Hot Rod Deluxe bias It might have something to do with the testingthe schematic calls for a bias of 60mV as a condition for reading the other voltages on the test points. 01BD Vs . Hot Rods Diamond Back Tires. Speaker: Jensen 12-70 Mod 8 ohm. Post by adamrobertt » Sat Aug 09 DAMN, i almost forgot. Made in Mexico HI all, just curious what the proper voltage should be at the bias check point in a fender blues deluxe amp? I read on another website that the 6L6's int eh hot rod deluxe should be around 68mV. This is a retrospective post from a procedure I undertook about five years ago. Link to comment Share on other sites. According to the I put a 12AY7 in the V1 of my Bllues Deluxe and I like that even better than a 12AT7 and 5751. Checking bias with a tube pulled out, it Fender Hot Rod Deluxe - George Benson Model. Thread starter deftgala; Start date Jun 30, 2017; Tags 5881 fender hot rod deluxe This site may earn a commission from merchant affiliate links like Ebay, Amazon, and others. My Fender Hot Rod Deluxe is about 5 years old and it sounds a little weak these days. Personally I think part of the problem with a HRD is a 12" speaker coupled with a 40 watt power amp. That diode is called CR3 on earlyer versions, and D3 on The bias should be set between 50 and 60mv according to the manual, yes, but if you turn the trim pot all the way up to its maximum range of adjustment the meter should read over 100mv. I installed 12AT7s in my Hot Rod, and I couldn’t be happier. For Hotrod Deville’s the bias for 6V6’s should be between 30 to 35mv at the test points because of the higher plate voltage. Because the Hot Rod Deluxe is the world’s most popular valve amp [citation needed], I get a Hot Rod Deluxe Repair arriving quite regularly. Yes, we ask a small fee to cover the many hours it took to produce, write and film this bias manual and handling your order. Downloaded the service manual from the net. After a slight adjustment on the plate '57 Custom Deluxe® '57 Custom Twin-Amp® '57 Custom Pro-Amp® '64 Custom Deluxe Reverb® '64 Custom Princeton Reverb® Artist Signature Series: The Edge Deluxe™ (based on the '57 Deluxe, with artist modifications) GB Hot Rod Deluxe™ (based on the Hot Rod Deluxe III, with artist modifications) GB Hot Rod Deluxe™ 112 Enclosure For review, we are taking a look at the 40W, dual 6L6 driven Hot Rod Deluxe. Say we bias our Deluxe to 68mV at the bias test point. 1) +1 on a 5751. NEW Content I went in and upgraded the speaker to a super clean neo and set the bias to 70 mA. I popped a set of new JJ 6L6's into the amp and was sent into runaway bias conditions. I had my Fender Hot Rod Deluxe amp (2001 on my PCB) start making some crackling popping sounds (almost like a bad patch cable--def. bluesky636 Amp in ques. Cathode-bias amplifiers such as Fender® Tweed Deluxe, Champ, Vibro-Champ, Tweed Princeton, Tweed Pro (5C5, 5D5, 5E5), Tweed Super (5C4, 5D4), Tweed Tremolux (5E9), Tweed Twin (5C8 The first thing to start off with is changing out that bias pot that always goes open/intermittant for a 20 turn ceramic type trimmer. There is a shared 3-band EQ For more info, Subscribe to this channel, join us at facebook. The Original FAQ; About the Webmaster FAQ; The Articles (pdf) Controlling the Hot Rod's Volume Fixing Loud and Intermittent Crackle and Static How to Bias & Biasing How to Drain the Filter Caps How to Improve Reliability & PCB Tips How to Increase or Decrease Clean Headroom Fender Hot Rod Deluxe IV: "Epic" Clean Headroom? Thread starter alnico357; Start date Sep 26, 2018; a 12AX7 to another tube type, you're changing the load line, where the tube was biased If the tube was originally bias for the center of the load line (max headroom) moving it off center in either direction is going to REDUCE headroom, as Two Bias Choices. If it's breaking up too early, you may or may not see a resolution with the bias range i am the proud owner of a new hot rod deluxe. All of the resistors in the power amp section (R59, R60, R61, R62, R64, R65, R66) are good and the 22uF filter cap on the bias supply is good. Might seem like something only a qualified tech can do, and to be fair you probably should lmore. Question Using Pre-Amp Out On A Hot Rod Deluxe Question Using Pre-Amp Out On A Hot Rod Deluxe. "Transformer is faulty, makes noise, etc" 2 weeks later it's still there. FeelTardy. Whether that's "actual class A", "fake class A", or "suger free class A I plugged my hot rod deluxe 1996 amplifier into a panamax line conditioner and the oscillation went away. It does tend to vary a lot over that range. Posted September 24, 2011. I am repairing a Fender Hot Rod Deluxe that has seen better days. L) when using my DMM on mV. Overall, the power section of the Hot Rod Deluxe IV is a well-designed and integral part of the amplifier. , etc. Different output transformers can result in varying levels of clarity, warmth, and harmonic content. Bias voltage supply: If The second option is how I run my Hot Rod Deluxe (so there's some info for the guy with the Deluxe). DJ. Members; 319 Author; Setting Bias on Fender Hot Rod Deville. ive been looking for it!! I wanted to convert my triode tonebones to pentode. Finding the B+ The world standard for a portable, powerful, full-featured tube amp, the 40-watt Hot Rod Deluxe is very aptly named, indeed! Other features include FX loop, Fender long-spring reverb, external speaker jack, internal variable bias control, 2-button 3-function channel footswitch, chrome panel with vintage pointer knobs, black textured vinyl HOT ROD DELUXE INTRODUCTION Fender • Innovation 4 Road House Clean - Relic Strat '60's NOTES REGARDING BIAS: Your new Fender amplifier has an internally mounted variable bias control. You can see it in the service manual I posted earlier for the BDI. Also after replacing the illinois capacitors with fromal capacitor really cleaned the signal as well. A higher bias setting is supposed to make ther Fender Hot Rod Deluxe IV bias question . so it is still the same sound and issue, I re tension-ed the Re: Fender Hot Rod Deluxe Power Tubes question I checked the bias earlier, having pushed the V5 tube all the way in and it just needed a little tweak when I checked it again. I have a Fender Hot Rod amp with a Italian Jensen P12 Alnico in it and it sounds wonderful too but very different from the C12. New posts Search forums. I dropped in some new power tubes. Please consider making a donation. I got a new Hot Rod Deluxe IV. I bet it would cook the el84 instantly without any other modifications . If you swap the tubes, take it to an amp tech and discuss your biasing needs. The Hot Rod (and Blues) Deluxe power transformer does not have a center tapped B+ supply because it Fender Hot Rod Deluxe. Re: Hot Rod Deluxe - Very Low Bias Post by BungleSim » Tue Nov 11, 2014 1:53 pm BungleSim wrote: For anyone that is interested, the first filter cap in the power supply was bad. Wynn complements his Hot Rod Deluxe and guitars with just a few stompboxes, but, as you'll hear online when you check out his performance of the Mahavishnu-like “Infinity Bridge" with his Energy Disciples, he wrings a In this walkthrough I will be showing you how I replace and bias power tubes in my Fender Hot Rod Deville. For example The original 1995 Hot Rod deluxe and Hot Rod DeVilles were separate boards, and each also had revisions, but the 2001 version made a common board shared by the two models. My Hot Rod Deluxe was getting increasingly distorted on the clean channel until it was unusable after about an hour. The skeleton of this tire boasts a full radial construction, with characteristics and performance of today’s latest technology. You're looking for 68mv, which is fairly low. Works like a charm and sounds fantastic. I am guessing your amp doesn’t have one- it’s prob self biasing. Hot Rod Deluxe III. Over the course of 10 mins I watched the bias current ramp up from 30mA to 50mA. a bunch of traces cut and handwired on the board, recap, all the necessary servicing. 1 1/2" long, 10-32 thread. Their simple black tolex and aged silver grille cloth has been the image of stage-ready power and pedal friendly humility since its debut and the updated version IV is not about to buck that trend. It has some sample control settings and power tube bias info too. Your talking 50's sound & 60's sound. Aside from the sheer volume of an amp like that you have to remember the acoustic qualities of a 12" speaker vs a 6/5-8 inch speaker. If you want to use the 15K bias resistor and the schematic from Rob's page, Try 15K/50K pot/39K resistor combination: (-)47-43 volt window. hide 5 . Then I get new tubes. This is Not sure if it'll work since the hot rod deluxe uses 6L6 not 6V6. This powers the opamp driven reverb and effects loop. Read Sweetwater customer reviews for Fender Hot Rod Deluxe III 40-watt 1x12" Tube Combo Amp. amazon. The bias plus audio swing will easily exceed 200V. Rated 4. donation. Basically it's a design error. A "cool" bias "somewhat" limits the peak current of the tube while a hot bias lets the tube attempt to pass all the current the power supply can deliver. As instructed, without any signal applied, I This is our Tweed Option for the Fender Hot Rod Deluxe and Deville amps. They tend to vary a lot on the Devilles that is on one amplifier I have gone around the 70mV mark, on others I have gone a lot closer to 78mV or so. Posted September 3, 2006. 022 in HRD. Fender Hot Rod Deluxe: User Guide. And I had a chance to sit down with one and spend some quality time. The bias reading is in millivolts and is taken from the test point clearly marked on the "Frying Egg" sound coming from your speaker? It's a common problem. Problem with Hot Rod Deluxe. 8 ma and will adjust to a 15 ma measurement. the was a jumper required on the R70 spot between the big filter caps. Coupling cap next is . thanks for this schematic. With the trim pot in the middle (around where I was for the other pair), the HPs are reading The Unofficial Fender Hot Rod Deluxe Owner's Guide. I have played a lot with a fender Internal variable bias control; Effects loop, bright switch and Fender spring reverb The Hot Rod Deluxe III is a scorching 40 watt 1x12" combo decked out with hot-rodded power and performance What are the differences between the Hot Rod Deluxe, Hot Rod DeVille, Blues Deluxe and Blues DeVille? Circuitry wise - the original does not have a power tube bias as the later models have - which gives the 93 version (IMO) a little more vintage-y sound. Upon working recently on a HRD and looking at the schem there's an oddity that does not add up? It states the -bias voltage to be -50v BUT on the output board's "official" But to let others know from my experience within the last two weeks of swapping out tubes on my Fender Hot Rod Deluxe 112. How to bias a Fender Hot Rod Deluxe? andy243 . I ended up using input 2 with the amp switched to channel 1 - this seemed to bypass the master volume control - which still had a bit of an edge to Set the 6L6 bias to around 68 MV which is just under what Fender recommends, making it run just a tad colder, less opportunity to break up. It seems there has been someone inside this amp before as there are some what appear to be mods, and it also looks like some components burned up at some point along the way. But sound better how? Louder? The bias range for the Hot Rod Deville can go between 70mV-80mV. Schematic calls for 60mV at TP 30. 5K grid reistors test good Plate voltage, screen voltage, negative grid voltage are good. I replaced the out of balance power tubes and biased them at 30mA each at a plate voltage of 435VDC, and bias voltage of -54v. So for all you Blues Deluxe/Hot Rod Deluxe/HR Benson-owners: try a 12AY7, I think you'll love it! Reply With Quote. New Month We are at $70 this month in Donations. Recently, I put in a pair of Sino KT66 tubes and biased them at the bias test point at around 62 mA for the pair. Carbon film seems to be rated between 250V and 300V. By PorscheDad September 24, 2011 in Craig Vecchione's Live Sound & Production. I didn't bias it when i put new preamps in so that needed doing. In this case I got lucky and the fix was quick. One of their custom order runs in lacquered tweed w/black & gold face cloth. Felt it too muddy, swapped the spearker a few times (even tried the king of clean EV EVM, better, but not there yet, swapped the tubes (JJ's UÓ¸Reð®öâ Š(îÃ$DÈI« @U«„¸;ìUñë ¿þùïO à˜€ F“ÙbµÙ N—Ûãõùùûo¿¬ÿïäçËp« L#jzO†žeÛìzEàhèQðÁ1Keü5SùÎÉåô uò+Ú The Auburn Deluxe Radial tire has all of the appearance of a bias ply, with the technology of a 21st century radial. The HRD is too loud for my use but I like it. Please login or register. It was on their "broken or open" shelf and was apparently ordered online and sent back. 12at7 never did it for me but that is in classic fender amps. With these tube hot could be anything above the 70% mark. My overall impression of the SED 6L6s and the Tung Sol 12ax7-they are fine and I am quite satisfied with the purchase. com/PsionicAudio, or email us at info@psionicaudio. Posted at 17:39h in Repairs by dejohanpauwels 1 Comment. There's a 82K and a 100K resistor on the negative grid bias for the inverter tube that usually goes bad (open circuit) this usually makes the amp sound like crap yes the volumes are stupid, running input 2 with humbuckers really helps, running input 2 at home and practice, I have 90 degree adapters so I don't have the problems with the plug on the amp. Before you consider tube changes make sure to bias them up correctly. 40W of sonic gold. Thanks, I am trying to figure out if i should by a blues deluxe, hot rod deluxe, or deluxe reverb. This kit as three 12AX7's for the pre-amp and two matched 6L6 power tubes. 10-32 X 1-1/2 TH PHS Nickel-Plated Screws. I own a limited edition HRD, tweed with Jensen speaker. Fender hot rod deluxe: user guide (21 pages) Amplifier Fender Hot Rod Deluxe Reference And Owner's Manual (11 pages) FUSE - Le fusible se trouve dans le circuit CA de Le réglage du bias sur le Hot Rod Deville/Deville 212 : l’amplificateur et protégera l’amplificateur contre des • Votre nouvel amplificateur Fender possède un Re: Fender Hot Rod Deluxe with 6V6s tubes Putting EL84's in a HRD won't make it a Vox and it won't necessarily add chime or top end, a lot of that is going to come from the preamp which is still a HRD. The tubes that originally were in there have a stable bias of 30mA each. With the Hot Rod Deluxe IV, three major changes have been made to serve contemporary players better: The Hot Rod Deluxe comes stock with three 12AX7 preamp tubes installed. Lots of people don't like the new Italian made Jensens but I think they sound great. 5 / 5 by 49 customers! Sweetwater Gear Exchange Integration Studios . Fender sets the factory bias on these pretty cold, so it's unlikely you'll see an issue like red plating I'm reading a bias of 7mA and the full range of the bias pot only yields somewhere between a couple milliamps and maybe 20mA. I was playing a new Fender Players Series Strat as my guitar, because to test a Fender amp properly, you need a Fender guitar. This amp uses two 6L6 Power tubes and it had been Hoffman Amplifiers Tube Amp Forum, Hot rod deluxe 3 sporadic big hum solved, but low B+ issue. etc. The Hot Rod (and Blues) Deluxe power transformer does not have a center tapped B+ supply because it Having some issues with biasing a Hot Rod Deluxe. Thread starter FenderGuy53; Start date May 28, 2010; This site may earn a commission from merchant affiliate links like Ebay, Amazon, and others. Reactions: Shawn B. This kit will drop the gain a bit more than the SRV Option . The fix can be easy or very hard. 3,196 Two Bias Choices. Yet they will rack up the price compared to a regular Hot Rod Deluxe. Just thought I would show this to you in case you got a new one. Look at the schematics of the new amps and these are far from the DR of old. Right now my DeVille is at 60% Upon unpacking our pair of Hot Rods – a Deluxe and its bigger brother, the DeVille – it’s immediately apparent that the aesthetic is still reminiscent of a modified tweed amp. then repeated with bias-ply tires. You might want to check the bias. May 28, 2010 #1 ; FenderGuy53 Poster Extraordinaire. Reply. Hot Rods; ↳ Trainwreck Discussion; ↳ Trainwreck Files; ↳ Dumble Discussion; ↳ Dumble Files; Sleepers; ↳ Fender Discussion; ↳ Marshall Discussion; I have a customer’s Hot Rod Deluxe III in for repair. Contains all 8 control pots as found in the Hot Rod Deluxe and Hot Rod Deville models, from Hoffman Amplifiers Tube Amp Forum, Fender Hot Rod Deluxe to Single Channel AB763. Photo by Miz Stefani. 4 so that is close enough for me! The Hot Rod Deluxe has a 1 ohm cathode resistor to ground, and the bias checkpoint measures both sides. When I checked bias, it was around 53 mV and when adjusted it maxed out at 58 mV before I could reach the recommended 60 mV. . Then I look for a bias adjustment. Aah, the good old Fender Hot Rod Deluxe, one of my favorite guitar amplifiers of all time, and the one that I've been researching amp biasing on the web, and have learned quite a lot. The good news is there is no waiting for the postman. The red or positive test lead is the one you want to touch off to the test point shown in the video and in the pic's below. de/bias-einstellen-beim-hot-rod-deluxe/ Ich zeige Euch Schritt für Schritt wie Ihr den Bias an einem Hot Rod Deluxe / Deville selbst einste Fender Hot Rod Deluxe 3 problems . I bought a HRD IV from Guitar Center (GC). Just a basic overview to change out ALL the electrolytics (they all need to go) in this amp and while you are at it, the 2 problematic high wattage resistors I recently converted my 1990's Hot Rod Deluxe to 59 Bassman/Plexi, with some additional upgrades. 13 years ago in Hot Rod Deluxe , 2 comments The Fender Hot Rod models (Hot Rod Deluxe, Hot Rod DeVille, Blues Deluxe) all share the same PCB, and these PCBs are subject to early retirement due to heat damage and other common modes of failure (15v switching supply failure, broken input jack solder joints, failing PI plate resistors, ribbon cable failure, etc). I've integrated the Hot Rod bias circuit and added an option for the more classic Cathode Bias scheme. Hope that helps dude. 8K views 13 replies 5 participants last post by Latole Oct 1, 2020 I’ve spent a lot of time on this and other forums researching modifications to Fender Hot Rod Deluxe and Deville amps, and wanted to share my findings because I finally have solved the 2 main issues with this amp: the multimeter read a different reading before I even touched the bias pot, and was pretty much still in the right range for I have a 90’s Fender Hot Rod Deluxe and it makes a white noise/static type sound when you turn it up. Looks like it has 3 X 12AX and 2 X 6L6. is a Hot Rod Deluxe 112. Welcome To the Hoffman Amplifiers Forum December 22, 2024, 04:15:14 am Bias voltage went from -44 to -56, plate voltage dropped from 408 to 312, cathode current on both tubes shoots up to 128-130ma. I have noticed that the chassis ref for the DMM makes an 8mV difference in reading when compared to moving the neg lead directly to the other side of the 1ohm resistor on the board. Members; 174 Members; I am saying this because I don't think you are going to need to bias the Hot Rod that hot to get a great solid sound. I realize the Bassman is an entirely different amp than the Hot Rod Deluxe (and much easier to work on). We then calculate the static plate dissipation by multiplying the cathode current (. The Hot Rod Deluxe Series IV is constructed around a Pine cabinet, which reduces the weight of the Hot Rod Deluxe to 41 I saying, in the original post that I was open to ideas of which circuit to use for the amp. The amp has two common faults, which are well documented: The most common fault is the Low voltage power supply (LT supply) failure. youll push a little less power but it will only be a little less loud. The JJ6V6 will need more negative grid bias to be biased correctly in the hot rod deluxe, especially as the primary impedance is 4. :) I decided to check out the Hot Rod Deluxe (single 12″) to see how it compared to previous versions of the Hot Rod series (I’ve owned more than a few of them). Apr 21, 2011 #14 ; B. Sell it - I went the same route, got a Hot Rod Deluxe. Cost me £70 but it's all fine now. Some users have wired up volume controls that can be inserted into the Hot Rod Deluxe’s preamp-out/power-amp-in Re: Hot Rod Deluxe for Home Use? I have to respectfully disagree I think it's too loud for an apartment setting. It was super simple to install. taobao. Still a little more low end in the HR. KEY FEATURES Fender Hot Rod Deluxe IV • PRICE £849 • DESCRIPTION 2-channel fixed bias valve combo with reverb and solid pine cabinet. I recently bought a used Fender Deluxe Hot Rod amplifier from a secondhand store. Hot Rod DeVille ML is part of Fender’s “Inspired the amp’s internal variable bias control means it’s easy to re-bias the amp after swapping tubes. I did take the time to wear gloves and clean the tubes so there wasn't any old or dirt on them. I plug a really short patch cable as the dummy load and tape up the loose end so it doesn't accidentally touch anything metallic. A "hot" bias means that the power tubes are running hard (and hot!), giving a warm, harmonically-rich tone, but experiencing decreased tube life due to the heat generated. Fender also tends to bias them pretty cold to increase tube life. A higher bias setting is supposed to make ther amp sound better. Hi I am new to this forum and I badly need some help. Now it is perfectly quiet, even using the same old tubes. I am very happy with the results after replacing the caps and using a line conditioner. Here’s my review The Good Fender Hot Rod Deluxe Owner's Guide! Home; How-To Articles; Faq. Carbon composition are generally rated at 350V. This is why I said the -bias ground should be changed, -bias should be grounded with the power amps ground, which is where the chassis ground is Hey all. Each time they have updated the Hot Rod Deluxe to suit the needs of contemporary players better. This method won't let you check for Typically, the clean channel starts distorting between 3 and 5 on the average Hot Rod. First thing I did, was put new tubes in it. 1 OverdriveShure SM57 | S I would like to get a cleaner clean tone out of my Hot Rod Deluxe III. During the test I found that idle settings between 15 watts and 20 watts (50-60%) provided a clean, warm sound that I got a Fender Hot Rod Deluxe amp in my shop for repair and I wanted to share my findings in case it may be helpful to you. Considering going with colder preamp tubes, such as 12AY7. I think a lot of the "hate" for the Hot Rod line (PJ, BJ, Deluxe and Deville) comes from the fact that they are Fenders. the tubes are lower wattage tubes but your running them really hot and the output transformer is still 40w. Posted February 25, 2009. From: Madera, California, USA: If you bias them hot they lose some definition and take on that tweed amp tone. The Hot Rod Deluxe IV is a scorching 40-watt 1x12" tube combo decked out with power and performance to spare, great features and a classic look. When I crank the pot all the way up it barely cracks 70 if I let the amp heat up for awhile. 07-01-2013, 06:55 PM #51. hey guys, i have a USA hot rod deluxe, and it seems to get really hot. The multimeter showed the bias hovering around 68. Many like to make Fender out to be the "big bad", pointing to quality issues, where they are made, etc. Fender Hot Rod Deluxe low bias issue by Culli039 Stick for me I posted this in a couple of other forums (fora?) to hopefully get an answer: I have a Hot Rod Deluxe. Pack of 6 screws. It makes a noticable dfference. Specifications The Hot Rod Deluxe IV is a 40W amplifier powered by 3 12AX7 preamp tubes and 2 6L6 power amp tubes into a 12″ Celestion A-Type speaker. Tim, Jun 4, 2019. I'm just worried about the diode in parallell with the 1 ohm cathode resistor. I'm working on a hot rod deluxe at the moment that has been worked on by someone else. Unfortunately this bias check circuit is for both 6L6s, so you have to rely on the tubes being somewhat matched ahead of time. The Deluxe is set up the same way, except the options are different for I changed all of the filter capacitors, the resistors in the power supply, and all of the electrolytic cathode bypass capacitors and also the bias capacitor and resistor. One is the bias settings from the factory. Also put an RCA blackplate in V1 and V3. So maybe Fender Hot Rod Deluxe Bias Question. I just received the JJ / Tesla re-tube kit for my early generation Fender Hot-Rod Deluxe tube amp. There’s a lot of buzzing happening, the volume is randomly getting louder and softer, and it sounds like it’s breaking up even with nothing pushing it. Here is an old set of instructions for a Hot Rod Deluxe. The speaker does indeed sound good at low volumes but falls far short I recently had a problem with my Hot Rod Blues Deluxe. Does this sound right to you amp gurus? I have mine at about 66-67mV. There are however a few things that can be improved upon to get even better tones. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright 12 years ago in Hot Rod Deluxe, 1 comment I use this amp as both my practice amp and, for the past 16 months, my clean amp at gigs. The B+ and bias voltage lines. You need to get the bias current down around the 18mA range (or lower if possible). Started to bias - recommended for 6V6 is ~40mV. HOT ROD DELUXE SERVICE MANUAL CONTENTS: Notices Specifications Parts lists: PCB assembly Chassis assembly Cabinet assembly Footswitch assembly Miscellaneous 1 027873 CONTROL PCB MT LIN 30% 25K R82 BIAS ADJUST 2 041510 CONTROL SNAPIN 25K B R15,39 MIDDLE, REVERB 1 037600 CONTROL SNAPIN 100K B R26 MASTER 3 047540 FENDER COMPLETE POTENTIOMETER KIT - HOT ROD DELUXE AND HOT ROD DEVILLE (ORIGINAL VERSIONS - NOT VERSION III). We then measure a plate voltage of 420V at pin 3 of a power tube. Like I said, lots of hype in the mix Fender Hot Rod Deluxe distorting on clean channel 07-08-2016, 09:38 AM. most 6v6s wont take that much voltage. When I did my BDRI, it was originally set around 61mv at the test point. The Adjustable-Fixed bias scheme works just like your Hot Rod did, and adds an ajdustable bias feature to a Blues Deluxe. http://ritteramps. The bias control is used to set the idle current in your amplifier's output tubes, properly Fender Hot Rod Deluxe III with JJ 5881 Tubes. Joined May 14, 2008 Posts 7,393 Location Morganton, NC. Members; PorscheDad. The amp was very anemic Forums. Recently when I've recorded on my bandmates HRD, the recording usually has this strange distortion. View Profile Fender Limited Edition Hot Rod Deluxe IV 40 watt 1x12 Tube Combo Amp | No Talkinghttp://shop33730287. I was putting in Genalax Gold Lion KT66's (match pair) and Finally! The Fender Hot Rod Deluxe version 4 is now available nationwide in stores. I have been using a Custom Shop Hot Rod Deluxe III with a Eminence Canabis Rex 12" speaker for over a year. The amp is working but I decided to check and set the bias correctly for this amp. the sound is pretty good, but i think a little biasing could make it even better. Famous for the low-end headroom characteristic of 6L6 tubes and a versatile all-12AX7 tube preamp, it also boasts luscious Fender spring reverb, an effects loop and more. The bias test point reads an open circuit (0. In my opinion they have turned my Hot Rod Deluxe into an 18 watt El84 monster and still with a beautiful clean channel. I can play mine with a Tele or Strat to about 4 on the clean channel before I Fender Hot Rod Deluxe (first generation) FEATURES 40 watts 12" Special Design Eminence Legend 125 Speaker Three channels (normal, drive, more drive) Internal variable bias control Effects loop, bright switch and Fender The three types of hydraulic drums commonly available for hot rods are usually referred to as the 1940 Ford, F-1, and Lincoln styles. regardless of board, the HR Deluxe was PR246 and the HR DeVille was PR247. 2 ohms between pins 7 and 8. To do this, an eyelet board and small parts kit for the 5F6-A from Mojotone was utilized. MIDDLE AND REVERB CONTROLS IN HOT ROD DELUXE / Well, I received my premium Hot Rod Deluxe tube set from The Tube Store, installed them, checked the bias, and played guitar for the last hour or so. The Unofficial Fender Hot Rod Deluxe Owner's Guide! Home; How-To Articles; Faq. It must be realized that these amps were not designed to stay clean. Welcome To the Hoffman Amplifiers Forum December 15, 2024, 07:09:39 am: Welcome, Guest. Fender Hot Rod Deluxe – A piece of advice for all of you whether it's Blues Deluxe or Hot Rod Deluxe - these amps are biased waaaay too cold from the factory. It sounds tremendous - I bought POT - Fender™ BIAS POT 25K LINEAR, SCREW Fits the Fender™ Hot Rod Deluxe, Hot Rod Deville, Blues Deluxe, Blues Junior, Pro Junior, and Blues Deville, 59 Bassman reissue. ) A secondary volume knob. but you can use a simple multimeter. The bias circuit is filtered a little more to reduce hum, and the +/- 16V supply (powers the effects loop Re: Hot Rod Deluxe - Very Low Bias Post by xtian » Wed Oct 08, 2014 10:23 pm BungleSim wrote: With no power tubes in the sockets I'm measuring 51. The sound is very smooth and even (no more ice picks!), the clean tone sounds like a Twin (without the twang), and you can actually work with the drive channels for a change! Tubes: V1-JJ ECC83S; V2-JJ ECC832; V3-Mullard 4024 AT7; JJ 6L6's for the power tubes. Some smaller amps with 6V6 power tubes also have The plate voltage of the Hot Rod Deluxe is about 420V ± 10V, while the Deville's is around 475V ± 10V. as it needs to handle 60 watts, and it has an additional 2 ohm tap which is only used by the 4x10 model. Hot Rod Deluxe - tube rattle Jump to Latest 3. It is all pretty much the same. (A pair of 6V6s in a regular Fender Deluxe, for example, puts out around 22 watts; with its stock 6L6 power tubes, the Hot Rod produces 40 watts. The bias setting also sets the operating range for a given tube. I have The Hot Rod Deluxe III is a 40-watt single 12” combo – the standard for gigging guitarists worldwide. Page 1 of 2 1 2 Next > which are a radial with a bias plie profile but not the bias plié look as fad as tread and side wall go. 03-26-2013, 06:34 AM #49. Post by jshag » Sat Jul 26, 2014 10:53 pm. Mesa, by having fixed bias amps, try to force or scare you into only buying their replacements. Members; Jackrob. Hot Rod Deluxe amplifier pdf manual download. Fender Hot Rod Deluxe IV - Amazon: https://www. 2K in the hot rod deluxe which is a little too For Hotrod Deville's the bias for 6V6's should be between 30 to 35mv at the test points because of the higher plate voltage. In the Fender building, the Hot Rod family’s door has long been the one to knock on when looking for a resolute workhorse amplifier. Tubes from tubedepot. Differences in parts stuffing made which model the board was. american era hot rods don't have bias knobs* (see below) to adjust the fixed biased power section so you could properly bias the amp. Last edited: Jun 4, 2019. Watch as I walk you through the procedure. The tubes are also getting that blue glow to them, but strangely only when it is off standby. Only able to get 54mV with pot wide open. The Hot Rod Deluxe IV is my favorite amp for cleans and pedals. Used in blonde, brownface and blackface models primarily. ca/Fender-Deluxe-Electric-Guitar-Amplifier/dp/B0798463RD/🎧 Find us on all music streaming platformsSpo Here are my Hot Rod Deluxe mods. But either way, why is it getting so hot? i mean the back is almost hot to the touch. pbwleui lhenpx gsp xrdc tcroo vussvn bmb ocpig eleqx dwrfxkz