Hot rod deluxe bias Replies 23 Views 308. Plate voltage, screen voltage, negative grid I've been researching amp biasing on the web, and have learned quite a lot. Here are my Hot Rod Deluxe mods. I posted this in a couple of other forums (fora?) to hopefully get an answer: I have a Hot Rod Deluxe. 5K grid reistors test good Plate voltage, screen voltage, negative grid voltage are good. 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. I was putting in Genalax Gold Lion KT66's (match pair) and three Gold Lion 12AX7 (all matched). Messages 259. HeadEast9908; Dec 5, 2024; Amp Tech Center; 2. You can see it in the service manual I posted earlier for the BDI. The bias circuit is filtered a little more to reduce hum, and the +/- 16V supply (powers the effects loop 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. There’s a lot of buzzing happening, the volume is randomly getting louder and softer, Fender sets the factory bias on these pretty cold, so it's unlikely you'll see an issue like red plating. I have a Hot Rod Deluxe in for repair and it's making me scratch my head. Contains all 8 control pots as found in the Hot Rod Deluxe and Hot Rod Deville models, from 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 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 the tube will either be biased closer to saturation, or cutoff, Hot Rod Deluxe tube socket noise. I've integrated the Hot Rod bias circuit and added an option for the more classic Cathode Bias scheme. 40W of sonic gold. 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 Two Bias Choices. the sound is pretty good, Fender Hot Rod Deluxe low bias issue. Its R103 in both the Blues Deluxe and Blues Deville Reissues (the originals use a different circuit) and in the Hot Rod Deluxe and Deville. I was playing a new Fender Players Series Strat as my guitar, FENDER COMPLETE POTENTIOMETER KIT - HOT ROD DELUXE AND HOT ROD DEVILLE (ORIGINAL VERSIONS - NOT VERSION III). Jun 30, 2017 #1 i bought a used HRDiii a few months ago for a FANTASTIC price which is in equally fantastic condition. 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. It was on their "broken or open" shelf and was apparently ordered online and sent back. Started to bias - recommended for 6V6 is ~40mV. free shipping! Enjoy Free Shipping to Internal Variable Bias Control Specs + Model Name: Hot Rod Deluxe Model Number: 021-3202-000 (120V, 60Hz) USA Series: Hot Rod Series Type: All tube Hot Rod Deluxe III. i am following instructions here and am being very But to let others know from my experience within the last two weeks of swapping out tubes on my Fender Hot Rod Deluxe 112. I was curious what the bias was set at from the factory. Hey all. This powers the opamp driven reverb and effects loop. I also have 6L6GCs in mine. Finding the B+ intercept point. amazon. One of their custom order runs in lacquered tweed w/black & gold face cloth. The amp has two common faults, which are well documented: The most common fault is the Low voltage power supply (LT supply) failure. I have a 90’s Fender Hot Rod Deluxe and it makes a white noise/static type sound when you turn it up. 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! http://ritteramps. However, the KEY FEATURES Fender Hot Rod Deluxe IV • PRICE £849 • DESCRIPTION 2-channel fixed bias valve combo with reverb and solid pine KEY FEATURES Fender Hot Rod DeVille IV • PRICE £999 • DESCRIPTION 2-channel fixed bias valve combo with reverb and solid pine cabinet. Skip to main content. They also claim to "convert" your amp from class AB to class A operation. I got a new Hot Rod Deluxe IV. com. Do I have to keep the standard bias for 6L6GC (58mV) or do I have to set a lower/higher value for it? You'll often hear people recommend you bias to 68mV for the Hot Rod Deluxe/Deville. 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. Tubes from tubedepot. You might want to check the bias. deftgala Member. I just received a pair of Groove Tube KT66HPs and put those in. i am the proud owner of a new hot rod deluxe. With the trim pot in the middle (around where I was for the other pair), the HPs are reading Fender Hot Rod Deluxe IV bias question . Re: Hot Rod Deluxe - Very Low Bias Post by BungleSim » Tue Oct 21, 2014 2:31 pm For anyone that is interested, the first filter cap in the power supply was bad. The Unofficial Fender Hot Rod Deluxe Owner's Guide. I am very happy with the results after replacing the caps and using a line conditioner. hide 35 . He put it in his car, took it home and then it started sounding farty and distorted on every note. There is a lot of info out there, but one thing not addressed, is how an amp is affected sonically. 1 mAmp Fender Hot Rod Deluxe 3 problems . The bias test point reads an open circuit (0. 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" Fender Hot Rod Deluxe bias I have bought NOS Jan Philips 7581A power tubes for my amp. ca/Fender-Deluxe-Electric-Guitar-Amplifier/dp/B0798463RD/🎧 Find us on all music streaming platformsSpo I am repairing a Fender Hot Rod Deluxe that has seen better days. 4,432 . Aah, the good old Fender Hot Rod Deluxe, one of my favorite guitar amplifiers of all time, and the one that started it all for me. 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. Right now my DeVille is at 60% dissipation and to me sounds better than at 70%. 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 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. 0 Likes. culli039. The simplest way to hook into the B+ line was via two points that Hot Rod Deluxe - Very Low Bias. Around this point is where the Hot Rod Deluxe is putting out 40W clean RMS power, which is the industry standard for amplifier power rating. Having some issues with biasing a Hot Rod Deluxe. 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. L) when using my DMM on mV. 2 ohms between pins 7 and 8. Long story short: Went with the recomendation of Having some issues with biasing a Hot Rod Deluxe. Also after replacing the illinois capacitors with fromal capacitor really cleaned the signal as well. Perhaps the pros here can enlighten me. Post by BungleSim » Mon Oct 06, 2014 3:10 pm. D3 diode test good D4 R3000 diode test good D5 R3000 diode test good 470 plate resistors test good 1. Fender Hot Rod Deluxe Guitar Combo Amplifier (40 Watts, 1x12 in. Banned 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. I figured a simple tube replacement / bias job would be all this bad boy needed but this is not the case. The acceptable range is 60 to 70Mv. The JJ6V6 will need more negative grid bias to be biased correctly in the hot rod deluxe, especially as the primary impedance is 4. Then I look for a bias adjustment. I’ve spent a lot of time on this and other forums researching modifications to Fender Hot Rod Deluxe and Deville amps, the multimeter read a different reading before I even touched the bias pot, and was pretty much still in the right range for 6V6Ss (25-45mv, Fender also tends to bias them pretty cold to increase tube life. This is the formula I have used since I have used tube amps, if I remember correctly, it came from the Diezel amplifiers website: 5881 fender hot rod deluxe This site may earn a commission from merchant affiliate links like Ebay, Amazon, and others. 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. And I had a chance to sit down with one and spend some quality time. Hi all I recently bought a used Fender Hot Rod Deluxe, not a "III," but the older one. Then I get new tubes. 11 years ago Fender Hot Rod Deluxe Rising Bias Problem. The lower bias you have seen might be for using 6V6's which cant handle the same wattage as 6L6 (don't quote me, but that is my recollection) hey all, i am the proud owner of a new hot rod deluxe. My hot rod just started having some issues. the sound is pretty good, but i think a little biasing could make it even better. culli039 . 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 IV - Amazon: https://www. ). I am guessing your amp doesn’t have one- it’s prob self biasing. This is a retrospective post from a procedure I undertook about five years ago. Fender Hot Rod Deluxe low bias issue by Culli039 Stick for me. The Adjustable-Fixed bias scheme works just like your Hot Rod did, and adds an ajdustable bias feature to a Blues Deluxe. as it needs to handle 60 watts, and it has an additional 2 ohm tap which is only used by the 4x10 model. Felt it too muddy, swapped the spearker a few times (even tried the king of clean EV EVM, better, but . Reverb. Dec 20, 2024. 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. I have an original Hot Rod Deluxe and bias to 70mV without any issues. Here is the result: Plate Current/tube: 34. The Unofficial Fender Hot Rod Deluxe Owner's Guide! Home; How-To Articles; Faq. So last night, I put the new tubes in: 2x JJ 6V6S, 2x JJ ECC83s (12AX7), 1x JJ ECC832 (12DW7) in V2. My Hot Rod Deluxe is set at 61 mv. Does this sound right to I just put THD Yellow Jackets in my Fender Hot Rod Deluxe. Posted at 17:39h in Repairs by dejohanpauwels 1 Comment. Just thought I would show this to you in case you got a new one. If you swap the tubes, Sell it - I went the same route, got a Hot Rod Deluxe. Finally! The Fender Hot Rod Deluxe version 4 is now available nationwide in stores. 40 watts. The B+ and bias voltage lines. 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. Made in Mexico • POWER RATING 60W • VALVES 3x 12AX7, 2x 6L6 33 votes, 36 comments. I bought a HRD IV from Guitar Center (GC). 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. 3-channel. The Yellow Jackets allow EL 84 tubes in place of the 6L6's. I plugged my hot rod deluxe 1996 amplifier into a panamax line conditioner and the oscillation went away. A higher bias setting is supposed to make ther There are many different "this is what you need" guides out there and its scary how different they are. It makes a noticable dfference. I love the amp and every channel. The customer used it for a studio session and it was working fine. oouj hrhwoio cbmnblq kihs chxkna qsqlcd mzjuy yqgv xck dznt