Hot rod deluxe bias Oct 21, 2008 · have on my fender Hot Rod Deluxe, love the tone of the 6v6 a couple of my originally 6L6 amps have 6v6 tubes, my Mesa Mark IV is designed to accept the 6V6 and EL-34, just set it up with the power in tweed mode and running simulink, really get great tone, the Mesa Amps don't have a bias adjust, My Fender Hot Rod Deluxe a 40 watt amp is running 6v6 as well, got the tubes from euro-tubes. Sep 22, 2020 · Hot Rod Deluxe - tube rattle Jump to Latest 4. The Unofficial Fender Hot Rod Deluxe Owner's Guide. It does tend to vary a lot over that range. Downloaded the service manual from the net. Based on a nominal plate voltage of 430VDC biasing between 29ma - 42ma (per tube) would have the KT66's running in an acceptable dissipation range, but since the HRDx has components that are based on a 40 watt design figure I still wouldn't go higher than 35ma per tube (@ 430VDC). I would turn down the bias before you totally cook the tubes if it hasn't already happened. My Hot Rod Deluxe is set at 61 mv. Jul 22, 2007 · 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. But if you think the amp sounds fine, just leave it. It is all pretty much the same. The Adjustable-Fixed bias scheme works just like your Hot Rod did, and adds an ajdustable bias feature to a Blues Deluxe. The Hot Rod Deluxe IV utilizes a high-quality output transformer, which contributes to its signature tone and ensures reliable performance. Adjusting the bias on a tube is a great example. Dec 7, 2005 · I am sure this is a very subjective setting. I ramped it up to about 68, but ended up back around 62. ) Thanks Apr 21, 2016 · It’s common knowledge that the Rod Rod Deluxe is a fantastic amp, it’s also LOUD. L) when using my DMM on mV. Right now my DeVille is at 60% dissipation and to me sounds better than at 70%. I swapped in a new set of JJ's and they red plate as well. The plate voltage of these amps is designed for the 6L6 tubes and this is the reason why the previous owner has used a pair of JJ's 6V6, which can handle the higher voltages of these amps. Nov 3, 2008 · 3 - Amp seems hot in temperature when run for a while: The amp came with Fender 6L6GT tubes, which are relabelled Sovtek 5881WXT. A simple fix for this common problem due to low qualoity components Mar 24, 2019 · Hi all, 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: 1) The lack of control over output volume 2) The unimpressive Amps without adjustable bias include Mesa-Boogie amps, some Peavey amps, and even some Fender amps (early versions of the Hot Rod Deluxe/Deville and Blues Deluxe/Deville, for example). Apr 13, 2010 · How's it goin guys, I'm new here, but there's some helpful info and people here, been tinkerin with my hot rod deluxe, and plotting some beginner mods off justin holtons list but I think I might have a problem First thing I checked into was biasing of course, and according to justins info Apr 21, 2011 · I already sort have. 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. Follow Oct 17, 2020 · I replaced a well-used 6-year-old set of tubes that were scratchy and noisy on this Fender Blues Deluxe Amplifier. YMMV. Just thought I would show this to you in case you got a new one. 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. 4 so that is close enough for me! Feb 19, 2009 · The Hot Rod Deluxe comes stock with three 12AX7 preamp tubes installed. The fix can be easy or very hard. Plus, JJ's are very stable and "even" sounding tube. Apr 11, 2009 · I've read that the Sovtek "5881"s are not made to 5881 specs. I have a multimeter that read mV. I checked the bias and it was set at almost 40ma per tube. 13 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. I put in a pair of JJ 6L6GC tubes. Posted at 17:39h in Repairs by dejohanpauwels 1 Comment. 8Vdc Logged To steal ideas from one person is plagiarism. I understand the HDRx power supply is kind of wimpy, the Fender schematic says a reference bias of 30ma per tube. Aug 22, 2003 · Si cela interresse qqu'un, j'ai enfin découvert comment effectuer le réglage du bias dans le Hot Rod Deluxe, c'est pas très compliqué! --Yayo-- Pour les utilisateurs du Fender Hot Rod! 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. He gives you clea Feb 22, 2024 · The Hot Rod Deluxe has a 1 ohm cathode resistor to ground, and the bias checkpoint measures both sides. culli039. 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. The Hot rod Deluxe bias range is somewhat limited, and you are certainly not the first to hit the "I can't get my pot higher" issue. Basically Fender was looking to give the Blues series amps an update to help them stay competitive on the market, so they made a couple of changes. 1K views 13 replies 5 participants last post by Latole Oct 1, 2020 Dec 5, 2004 · I was on the Torres site looking at the mods he has doe Fender Hot Rod Deluxe amps. Just measure the voltage at the 1ohm resistor to ground to read the cathode voltage from both tubes and do the bias math as you did in your Hot Rod. Oct 27, 2020 · I have encountered only one Blues/Hot Rod Deluxe or Deville that would bias out at more than 52%. Is changing the plate load resistors on a BLUES DEVILLE the same as a HOT ROD DEVILLE ?? IS R57 & R58 the same type of resistor in both, and can I just follow the instructions on Justin Holton's page for changing Hot rods on my blues deville? (He says to use an 82k 1/2 watt for R57 & 100k 1/2 watt's for all others. Reducing that value gets you closer to ground potential. We then measure a plate voltage of 420V at pin 3 of a power tube. Jul 14, 2023 · Where are Fender Hot Rod Deluxe made? This model, along with the Hot Rod Deville, were originally designated as F. Anybody out there have experience with this swap on a traditional build hot rod? TIA, Andy Re: Hot Rod Deluxe - Very Low Bias Post by Stevem » Thu Oct 09, 2014 11:17 am yeah, at this point it would seem to be a shorted socket or shorted circuit board trace issue, yet he makes no mention of smoke or fire!? Apr 24, 2014 · I am thinking that 1) there is very little difference in 35ma per tube(70ma total) and 34ma per tube(68 total). For example, Groove Tubes copy of GE's 6L6GC, the GT-6L6GE, is only rated at 25W plate dissipation. So last night, I put the new tubes in: 2x JJ 6V6S, 2x JJ ECC83s (12AX7), 1x JJ ECC832 (12DW7) in V2. Got a great deal on this Fender Hotrod Deluxe III but like all tube amps… it can usually be better. Does not include the Hot Rod Deluxe III or Hot Rod Deville III (with black control panel). The plate voltage of the Hot Rod Deluxe is about 420V ± 10V, while the Deville's is around 475V ± 10V. Jun 6, 2016 · 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 Jul 26, 2014 · Reduce the value of R77 (100K) in the bias circuit a smidge. I also beefed up the caps from (3)22uf to 47uf, and from (1)47uf to (2)82uf . Ce manuel appartient à la catégorie amplis guitare et a été évalué par 4 personnes avec une moyenne de 9. Fits the Fender™ Hot Rod Deluxe, Hot Rod Deville, Blues Deluxe, Blues Junior, Pro Junior, and Blues Deville, 59 Bassman reissue. I recently bought a used Fender Deluxe Hot Rod amplifier from a secondhand store. JJ's for your power tubes (6v6), and they will likely not need re-biasing. The Hot Rod Deluxe has a test point (TP30) where you can measure the bias for both tubes at the same time. Oct 23, 2011 · Larger image The old manuals for the Fender Hot Rod series used to include recommended settings. The plate voltage of the Hot Rod Deluxe is about 420V ± 10V, while the Deville's is around 475V ± 10V. I have a brand new Fender HRD. Tubes from tubedepot. http://ritteramps. It was called the "unofficial hot rod deluxe owners guide" by justin holton. Fender™ part # 0027873000. regardless of board, the HR Deluxe was PR246 and the HR DeVille was PR247. I checked the bias at the bias test point and it was at 60mV, which I thought it was supposed to be. com-~- Aug 31, 2012 · The stock power tubes on a Blues Deluxe and Hot Rod Deluxe amps are the 6L6's. Background music used for free from audionautix. Both types will drop the amp’s gain factor substantially – the 12AU7 moreso than the 12AT7. Between the impedance mismatch soundling like crap, and the high voltages, I'd never consider using old-stock "real" 6V6GT/A tubes in this application. Overall, the power section of the Hot Rod Deluxe IV is a well-designed and integral part of the amplifier. Messages 468. I have a 2002 hrdlx with the standard speaker and I'm looking for a more cleanish (and clearer) blackface sound and more headroom (I don't care for the drive channels). We then calculate the static plate dissipation by multiplying the cathode current (. 5K grid reistors test good Plate voltage, screen voltage, negative grid voltage are good. Does this sound right to you amp gurus? I have mine at about 66-67mV. I bought 6L6gc electro harmonix tubes to replace the stock groove tubes. Modern Hot Rod Deluxe 1964 Fender Champ Sep 28, 2016 · Re-Biased Fender Hot Rod Deluxe III. sjv. Sep 19, 2015 · 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 love the amp and every channel. s Sep 2, 2006 · Hi all. Some smaller amps with 6V6 power tubes also have adjustable bias (Fender Deluxe Reverb, for example). How can I calculate the best bias voltage for this amp/tube setup? Thanks. But, you can substitute others in without fear; two examples would be 12AT7 and 12AU7 tubes. Aug 18, 2012 · Re: Fender Hot Rod Deluxe Type PR 246 Squealing Post by rock_mumbles » Sat Nov 03, 2012 2:54 am I talked to my friend today and he said there's a 100k resistor in that same portion of the circuit to check out it's (R77) the 'tail' of the adjustable bias supply. I don't expect to use the Deville for OD tones as I have a Voodoo amps V-plex 100w for that. But the new manuals don't include this helpful information. My hot rod just started having some issues. Link to the Tube Set I Used: https://www. The Deluxe and DeVille range have the same channel and switch arrangements. I have played a lot with a fender Contains the following filter capacitors, used as main and decoupling filters, bias filters in the original version of the Fender™ Hot Rod Deluxe from 1996-2010. Made by Carling™ Used as the power switch in the following Fender™ amps: Vibro-King, Vibrasonic, Tonemaster, Rumble Bas, Prosonic, Hot Rod Deluxe, Hot Rod Deville, Custom Vibrolux, Blues Junior, Blues Deluxe, Blues Deville, Bassman 300, 94 Twin, 65 Twin Reverb Reissue, 65 Deluxe Reverb Reissue, Twin Amp (Pro Tube), Super-Sonic (Head & Combo Pack of 6 nickel-plated steel chassis mounting screws suitable for Fender™ reissue "Tweed" series amps. Aah, the good old Fender Hot Rod Deluxe, one of my Oct 22, 2008 · The bias rite and compu bias allow you to measure the bias of each tube individually. So, you may get to a point where you'll get close, but not all the way to what you want. #fender #fenderhotroddeluxe #tubeamp Check out the Fender Hot Rod on Sweetwater! https://sweetwater. Its only a couple of months old, and its working perfectly. Long story short: Went with the recomendation of the guy from Eurotubes and his video of how he was biasing the Hot Rods at 89-90 Mv. Below are pictures of a modern Hot Rod Deluxe compared to a rare 1964 Champ with the original styling. Apr 29, 2013 · Noted Thanks The biggest problem I have with the 59 ri schematic and using its voltages to make a direct comparison to the hot rod schematic is how the bassman has a real small input, 4 mV, and yet at the out put it looks like the develop the full 50 Watts. Here is the result: Jan 15, 2015 · Having some issues with biasing a Hot Rod Deluxe. Oct 1, 2024 · Thought I would post some details of my second build, I got a hot rod deluxe for a good price and after the success of my Bassman conversion decided to have a go at a single channel AB763. I'm just worried about the diode in parallell with the 1 ohm cathode resistor. Differences in parts stuffing made which model the board was. Started to bias - recommended for 6V6 is ~40mV. 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. Anyone here done these mods toehir amps or had to chance to play through one Sep 29, 2021 · In the video I said "Deluxe" but it's a DeVille. You want to have a little less negative voltage (getting closer to ground potential) on the power tube control grids. Jun 10, 2019 · Fender's bias spec of 60mv is completely useless when biasing your hotrod series amp. I play live a lot, but almost all my playing is with my amp mic’d and run through a PA, so really need to maintain a manageable stage volume without loosing the sound of driven tubes, especially the sound of saturated power tubes (yum). 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 Different output transformers can result in varying levels of clarity, warmth, and harmonic content. Actually saying any particular amp should have a specific ma rating for Mar 24, 2010 · I have a fender hot rod deluxe and its due for some new tubes. How to Bias a Fender HotRod Deluxe: Get your copy Today. T. The Hot Rod Deluxe is a mono-channel amplifier featuring 3 switchable gain levels: "Clean", "Drive", and "More Drive" selectable on either the control panel or footswitch (if plugged in). Much isn't needed to accomplish this. I just didn't like it that hot. nmssis; Aug 23, 2024; Amp Central Station May 7, 2014 · So I popped in new tubes, it had been modded to 6v6's so I stuck with that, re-biased the amp, and replaced the bleeding caps. Mar 28, 2010 · Edit: Hmm, I just checked the bias and with the dial cranked all the way up, it reads 60. The problem/fix also applies to the Hot Rod Deluxes. 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. Bias einstellen leicht gemacht ! Mit etwas Geduld und Ruhe könnt Ihr recht einfach den Bias nach einem Röhrenwechsel bei verschiedenen FENDER Verstärkern einstellen. Does not include the Hot Rod Deluxe III - for the Hot Rod Deluxe III, see the FCK-61 kit. The Hot Rod Deluxe has lots of solid state components to power so I bumped up the value of the two resistors, R78 and R79 to 2K 3Watt to reduce the circuit's current demand since we're only powering a single TL072. io/Kjg19N (Affiliate)Welcome to this in depth demo an Jun 4, 2016 · FWiw, many times these Blues/Hot Rod amps are set-up at the factory with a bias range that will not allow biasing above 50% or so of max plate dissipation unless you buy some really hot tubes. That diode is called CR3 on earlyer versions, and D3 on Aug 13, 2013 · This month we look at changing the gain structure on a Silvertone and dealing with volume fluctuations in a Fender Hot Rod Deluxe. Contains all 8 control pots as found in the Hot Rod Deluxe and Hot Rod Deville models, from 1996 to 2010. Aug 17, 2020 · Fender Hot Rod Deluxe Rising Bias Problem. Consultez gratuitement le manuel de la marque Fender Hot Rod Deluxe ici. The Hot Rod and Blues Deluxe are adjustable fixed bias, so for best operation they benefit from adjustment after changes. Mar 5, 2009 · 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. 1 1/2" long, 10-32 thread. Using the bias probes, I have set the bias to be about 38 to 39 mA cathode current at about 410 VDC plate. May 26, 2005 · Thanks for your reply B VanceActually I've owned 2 Hot Rod Devilles 410s and 1 DeluxeSo I know what to expect with regards to clean and OD sounds. Texas Instruments recommends 5 to 15v and -5 to -15 power input with +/- 18v max at pins 4 and 8, the Hot Rod Deluxe specs 16v. com. A new Pro Junior almost looks totally identical to this Champ. They'll Feb 28, 2009 · 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. Nov 11, 2022 · Re: Hot Rod Deluxe - Very Low Bias Post by Stevem » Thu Oct 09, 2014 11:17 am yeah, at this point it would seem to be a shorted socket or shorted circuit board trace issue, yet he makes no mention of smoke or fire!?. This kit includes only the power supply capacitors. It was awesome, but sadly defunct. Ce manuel est disponible dans les langues suivantes: Français, Anglais. It was like 48mV from the store, Warm, bluesy, naturally overdriven sounds come from a good Tweed-era circuit. . i am following instructions here and am being very careful so for a month, as ebay tubes are always a gamble IMO. Controlling the Hot Rod's Volume How to Bias & Biasing Feb 25, 2009 · 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'm no expert at these things but if there's an easy way to make something better I'm all over that. I was thinking of using the clean channel and a pedal for some other distortion flavors. les lampes de préamp et l’inverseuse (les trois 12AX7) ont une espérance de vie largement supérieure à celle des lampes de puissance, et tu n’es pas obligé de les changer en même temps. You should be using a digital meter for this stuff though. The bias setting also sets the operating range for a given tube. Good looking tire that hits all the right style notes of the bias plys. The GT-6L6 C(HP) tubes produce a tone and response that is warm in the mids with good harmonics, has a decent top and bottom end, and has some natural compression. I adjusted the bias to 45mV and the heat and smell have gone away. There's a couple that are fixed bias and non-adjustable though. Wondering if the wandering stops if I changed out the bias plys for the Diamondback Auburn Deluxe radial tires. Power Tube Bias Setting Fender Hot Rod Deluxe: I will be changing to power tubes, checking, and setting the Bias on my Fender Hot Rod Deville. If it's breaking up too early, you may or may not see a resolution with the bias range A quick tutorial on how to set the bias on a guitar tube amp, specifically the Fender Hot Rod Deluxe. Anyone here done these mods toehir amps or had to chance to play through one Jul 15, 2010 · Here is an old set of instructions for a Hot Rod Deluxe. 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. May 5, 2013 · The JJ6V6 will need more negative grid bias to be biased correctly in the hot rod deluxe, especially as the primary impedance is 4. It is not to be I don’t do a lot of amp repair, but I’ll work on my own. I have a Hot Rod Deluxe, and both power tubes are red plating. May 27, 2007 · Re: Mods for fender hot rod deluxe or deville 410? Actually I just plugged them in and fired it up, never touched the bias on the amp. the sound is pretty good, but i think a little biasing could make it even better. Apr 21, 2016 · It’s common knowledge that the Rod Rod Deluxe is a fantastic amp, it’s also LOUD. Heres my questions: 1) How long should this amp and these tubes FENDER COMPLETE POTENTIOMETER KIT - HOT ROD DELUXE AND HOT ROD DEVILLE (ORIGINAL VERSIONS - NOT VERSION III). However, the Hot Rods are far from those; they're bright, tight, and clean in comparison, and it's the way the circuit is designed. 20 IQ #1 . It was quite tight for space to add additional preamp valves so only added 1 for the reverb and went for a MOSFET driven bias wiggle tremolo. Post by adamrobertt » Sat Aug 09, 2014 2:08 pm Jun 3, 2009 · Rob Hull guides you through how to bias your Deville amplifier in this no-holds-barred, drag-down discussion of multimeters and millivolts. If your plate voltage is only 400 volts at 70 ma that is 28 watt bias on a 30 watt tube or about 93% of total rated wattage. Jun 27, 2019 · The Auburn Deluxe Radial tire has all of the appearance of a bias ply, with the technology of a 21st century radial. You might want to check the bias. Problem with Hot Rod Deluxe. Looks to me like your tubes are way over biased. If your plate voltage is higher than that, then the over bias is even more extreme. I got a new Hot Rod Deluxe IV. Hey all. When I did my BDRI, it was originally set around 61mv at the test point. In this case I got lucky and the fix was quick. If the output tubes are a decent match then I think using the test point is fine. Click to copy post link Hi all I recently bought a used Fender Hot Rod Deluxe Then from '63 to around '68 Fender went blackface, before setting into the silverface style for most of the 70s. If I replace V2 with a 12AT7 or 12AY7 is there any bias adjustment required ? I've olny had this amp 2 days and given all the reliability post about the Hot Rod I'm considering tacking it back and getting the Tweed Blues model. I called Bob at Eurotubes and talked with him, he said with the set he would give me I didn't need to change the bias, so I didn't, but most people are gonna say you need to. Vous avez une question sur le Hot Rod Deluxe de la marque Fender ou avez-vous besoin d Mar 21, 2018 · KEY FEATURES Fender Hot Rod Deluxe IV • PRICE £849 • DESCRIPTION 2-channel fixed bias valve combo with reverb and solid pine cabinet. When i measures the output from this with the multimeter at 200 mv it said ~126 Apr 24, 2010 · DAMN, i almost forgot. Thread starter aryasridhar; (my bias tool only checks one tube at a time) aryasridhar Member. So i tried to bias my fender using what seems like a very straightforward procedure based on this youtube video: I originally had white Groove Tube 6l6's which were very old with rust of the pins. It utilizes a single 12-inch Celestion A-Type Speaker. Thread starter FenderGuy53; Start date May 28, 2010; Fender Hot Rod Delux III. Dec 4, 2013 · Fender Hot Rod Deluxe low bias issue by Culli039 Stick for me. The Blues Junior is one of those. I've done the following: - C1 changed to 22uF: a little more cleaner bass but I not a lot of difference. It is disclosed solely for use by qualified technicians for purposes of equipment maintenance and service. HOT ROD DELUXE (This is the model name for warranty claims) SERVICE MANUAL SEPTEMBER 1996 IMPORTANT NOTICE: The information contained herein is CONFIDENTIAL and PROPRIETARY to Fender Musical Instruments Corp. The good news is there is no waiting for the postman. Say we bias our Deluxe to 68mV at the bias test point. I adjusted the bias pot to the factory recommended 60mv but they both still glow red as soon as it's off of standby. I have read that for normal HR amps the bias should be in the range of 68 - 80mV. According to the manual, the bias setting at TP30 should be +60mv. 13 years ago in Hot Rod Deluxe , 2 comments Dec 5, 2004 · I was on the Torres site looking at the mods he has doe Fender Hot Rod Deluxe amps. This video is of a Hotrod Deville which has a little higher plate voltage than the Deluxe but the bias recommendations at the test points are just fine for both the Deville and the Deluxe. Feb 16, 2014 · Re: Hot Rod Deluxe Burned Up Screen Resistor there used to be a website dedicated to hot rods and their idiosyncracies and also offered a whole lot of repair advice and modification stuff. It apparently has a different tone stack than the stock HRD. 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. There's been a thread abouth this a month ago, do a search, there i've posted the solution (I don't have time to sreach it for you right now). Join date: Dec 2013 . The Hot Rod Deluxe is an all tube combo amp rated at 40 watts. (‘Fender American Tube’) amplifiers but this moniker was dropped in 2002 when production of this series of amps was moved from Corona, CA to Fender’s Baja-Ensenada, Mexico manufacturing facility. Besonders bei der Serie HOT ROD, also dem Hot Rod Deluxe und Hot Rod Deville, haben die Konstrukteure von Fender hier wirklich ein sehr anwenderfreundliches System eingebaut. 10 v * 10 v / 2 ohms is 50 Watts. I went to bias the new tubes, biased them to 65 mV waited 20 min and adjusted it. A. The amp is working but I decided to check and set the bias correctly for this amp. The Yellow Jackets allow EL 84 tubes in place of the 6L6's. Check each tube separately by bias probe, xfmr voltage drop, or whatever method you're comfortable with. He has one mod to brighten up the amp to supposedly hav eit sound more black face and another mod to install a bias adjustment pot. Everything can be bought online and is fairly inexpensive. Apr 11, 2021 · Just the typical road characteristics of a bias ply tire. Almost the same amp. Jan 22, 2009 · i am the proud owner of a new hot rod deluxe. When I turn the volume up the volume of the buzzing doesn’t change, it still buzzes with nothing plugged into it so it’s not a bad cable. I have mine biased at 68mV (Sovtek 6L6s). The JJ6V6 would probably prefer around 7K with those voltages… This video is of a Hotrod Deville which has a little higher plate voltage than the Deluxe but the bias recommendations at the test points are just fine for both the Deville and the Deluxe. TUBE BIAS CALCULATOR (for push pull class AB1/AB2) The Fender Hot Rod Deluxe Harma STR Philips Full revalve kit is designed to give you In stock £152. and it hit 60% before it ran out of adjustment. Anyone have any FAVORITE settings for a Hot Rod Deluxe for that Killer Texas Blues tone? Just put in some JJ's High Gain Option got the Bias set Weber C12N Speaker Thanks Bryan May 17, 2009 · TUBE AMP VOLUME BOX for FENDER Hot Rod Deluxe/Deville - eBay (item 130301782696 end time May-21-09 20:48:38 PDT) The added benefit is that it works as a master volume for the clean channel, so you can balance the volume of each channel with a single knob. The bias voltage is fixed, so the tubes just idle at wherever they end up after a change, for better or worse. Having some issues with biasing a Hot Rod Deluxe. A higher bias setting is supposed to make ther Mar 8, 2009 · But to let others know from my experience within the last two weeks of swapping out tubes on my Fender Hot Rod Deluxe 112. If they're both idling roughly equal but cold, you can either tweak the bias circuit or order a set of tubes from a retailer that idle hotter. I have the Limited Run version of the HRD it has the Jensen speaker and the blue Groove tubes. Might see Adjusting bias test point 30 to 60mV (the recommended setting) was at most of the way to the right of the bias pot - then measured at R59/R60 I got -42. 0 Likes. The bias test point reads an open circuit (0. Every one of them I have looked at will not bias much above 50% of MPD. Sep 28, 2016 #3 Biasing Fender Hot Rod Deluxe from 2000 Hey, I've just replaced the Mesa 6L6GC power tubes that were fitted in my Fender HRD (made in 2000, think it's a mark 1) as the amp had been quite noisy, hissing and popping a lot and dropping volume often. For more info, Subscribe to this ch Thanks NT, After reading all the horror stories reagrding the Hot Rod Deluxe it doesn't give me a warm fuzzy feeling. 80 Buy Now; Fender Hot Rod Deluxe YJ Fixed Bias Pentode JJ EL84 5070 Stan Volume Reduction Kit Fender Full Revalve Kits Volume Reduction Kit 5070 Our Fender Hot Rod Deluxe Pentode kit is designed to reduce the volume of your amp by Jun 20, 2012 · Yes you can. "Frying Egg" sound coming from your speaker? It's a common problem. I believe this since my friend had a set in his 700volt Music Man Bass head with no problems. Jul 30, 2007 · I was just checkin' specs for the KT66 and they're rated for 25 watts of plate dissipation and 3. To receive your copy of How To Bias a Fender HotRod Deluxe just click on the ‘add to cart’ above. Imho, anything above 50% sounds better than anything under 50%. 5 for the screen. I played through the amp for about an hot rod deluxe specifications hot rod deluxe type: pr 246 part number: 21-3272 (100v) 21-3202 (120v) 21-3262 (230v) 21-3232 (240v) power requirements: 100v ac, 50/60 hz 180w 120v ac, 60 hz, 180w 230v ac, 50 hz, 180w 240v ac, 50 hz, 180w power output: 40w into 8Ωor 4Ωat 5% thd input impedance : Hi I am new to this forum and I badly need some help. I was curious what the bias was set at from the factory. Au passage aussi, régler le bias d’un HRDx n’est pas monstrueusement compliqué si tu es un peu à l’aise avec un tournevis et un voltmètre. Lower wattage power tubes have a much narrower voltage range for operation, so your amp bias is probably set close enough. FENDER COMPLETE POTENTIOMETER KIT - HOT ROD DELUXE AND HOT ROD DEVILLE (ORIGINAL VERSIONS - NOT VERSION III). The skeleton of this tire boasts a full radial construction, with characteristics and performance of today’s latest technology. Jul 19, 2012 · 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. Someone (in another thread), told me i should take some spare tubes when i play gigs, incase they die. 2. 00 £136. Used in the reissue 59 Bassman, reissue Hot Rod Deluxe/Deville, reissue Blues Deluxe/Deville. I have never owned a class A amp nor have I played an amp with EL 84s so I can't say whether my observations are typical. 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. If I had just installed a new set of tubes, I always recheck the bias prior to taking the amp to a gig, as how the amp is Jun 30, 2010 · I've been researching amp biasing on the web, and have learned quite a lot. See the complete model cross reference. Try the settings above on either your Hot Rod Deluxe or DeVille amplifier. Mounts the chassis to the cabinet on top as well as the sides of the cabinet. Blues series vs Hot Rods: the Hot Rods use an extra gain stage for more gain in the Drive and More Drive modes. The Weber bias table puts this to be about 36 mA plate current and 50% max plate dissipation (I don't think the BDRI power supply, 430 VDC B+, is very stiff and plate voltage drops quite a bit as plate current increases). Depending on the plate voltage, that 35ma per tube is approximately in the range of 47-53% of max plate dissipationat a guesstimate of 400Pv for the 47% and 450Pv for the 53%. I have replaced all the plate load resistors since then, but that didn't effect the problem. Banned . The acceptable range is 60 to 70Mv. If you're after maximum headroom then set the bias to about 70mv. Aug 26, 2023 · This includes MarshallTM 50 and 100 watt tube amps, Fender® Super Reverb, Deluxe Reverb, Pro Reverb, Twin Reverb, Bassman, Showman, Tweed Pro (5E5-A), Hot Rod Deluxe, Hi-Watt 50 and 100 watt amps, Sound City 50 and 100 watt amps, all Rivera amps, Jim Kelley, Soldano SLO and Hot Rod Series amps, Mesa/Boogie 50 and 100 watt amps, Bogner, VHT, etc Jun 29, 2009 · I was searching for hot rod deluxe mods and I've seen this post. the PCB has a slot for an extra power filter cap, and it was a mod recommended from a cool hot rod deluxe web site I found. BTW the Deville I recently acquired was made in USA. I'm thinking of simply separating the path to ground of each 6L6 and putting another 1 ohm resistor. 068A) by the plate voltage (420V). Nov 23, 2012 · There is a great YouTube video on how to bias Hot Rod style amps, by the guys at the "TubeDepot": "How To Bias a Deville Amplifier" It is the same procedure for Hot Rod Deluxe or a Blues Deluxe (except the early 90's Blues Deluxe amps do not have a bias trim adjuster). They also claim to "convert" your amp from class AB to class A operation. I dropped in some new power tubes. You need to get the bias current down around the 18mA range (or lower if possible). The filament current is half, but that will only let your filament voltage go up a bit. you can get most of the resources from it Jun 18, 2014 · Tim Harr wrote:I have been using a Custom Shop Hot Rod Deluxe III with a Eminence Canabis Rex 12" speaker for over a year. D3 diode test good D4 R3000 diode test good D5 R3000 diode test good 470 plate resistors test good 1. Nov 17, 2012 · This sorta. There is a lot of info out there, but one thing not addressed, is how an amp is affected sonically. Apr 21, 2015 · 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. INCLUDES NUTS & WASHERS Part #FPK-113 May 28, 2010 · Fender Hot Rod Deluxe Bias Question. Apr 4, 2013 · As standard, Fender fit the Hot Rod Deluxe III with a pair of Groove Tubes GT-6L6 C(HP) valves for the power stage and three Groove Tubes GT-12AX7-R valves for the pre-amp stage. the was a jumper Dec 8, 2010 · They sound incredible, but after playing awhile the amp gets hot and smells funny. So i need some help about this. The bias supply voltage is solid at -50V. PLEASE NOTE: you cannot use 6L6WGB power tubes in a 60 Watt, Hot Rod Deville. This pot is a drop-in replacement for the original discontinued "blue" bias pot. Amp Man: Enhancing Silvertone & Fender Hot Rod Amps - Premier Guitar Rig Rundown: Umphrey’s McGee [2025] I just put THD Yellow Jackets in my Fender Hot Rod Deluxe. INCLUDES NUTS & WASHERS Part #FPK-113 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. 2K in the hot rod deluxe which is a little too low. This is the formula I have used since I have used tube amps, if I remember correctly, it came from the Diezel amplifiers website: The bias range for the Hot Rod Deville can go between 70mV-80mV. I was putting in Genalax Gold Lion KT66's (match pair) and three Gold Lion 12AX7 (all matched). The multimeter showed the bias hovering around 68. To read more about this refer to the section on which tubes to use. exw dvqna lqp wzhew mroeq rwdfex fdwc fzuc ixbv lvnouw