Fender reverb transformer dc resistance. See pics for condition.

Fender reverb transformer dc resistance 3V AC output that powers the tubes’ heaters. 194A: Used in Princeton* chassis: 5F2 Fender* No: 125C3A However, I've attached a set of data that I collected using a working Fender reverb drive transformer so you can see the typical measurements. A bolt-on replacement for BF Fender Super Reverb, Twin Reverb , Showman, Pro Reverb, & others. Add to Cart. Mounting hole centers are 2 inch apart. Signal noise goes away when I switch reverb off on the foot switch. This transformer was pulled from an RCA MI-12244 AVC compressor. Part #TAD-CAP-8-475: $4. Small transformers may be rated for about 350mW or so, and are fairly cheap (around AU$5. 5A DC 195J12. $208. amplifiedparts. Core: Paper Output Transformer - 4, 8, 16 Ohms Part No. Point Schumacher output transformer for Fender Champ. Normally the secondary should be around 1 ohm, so I replaced the Reverb transformer for a new one with the right DC measurements. Fender Project Reverb Style Push Pull 15W Output Transformer 2. Fender made the head cab extra large to allow for distance between the power transformer and the reverb tank. Hammond 10mH @ 12. Upgrade domestic power transformer for your vintage Fender Princeton Reverb or reissue. Check the Adding a bias pot to a Princeton Reverb and other amps : Layout diagram: Schematic: Here we have a typical Fender bias circuit. Brand New Upgrade reverb transformer for your Fender Custom Vibrolux Reissue. Plenty of leads left and no sign of abuse. 8 ohms while the "output" was open. This came out of working amp that was converted to 120v. Anyway, you can find out for sure since it is currently working. Fender Super*, Super Reverb*, 40 Watts; We do have a great deal available when you help us add any missing antique tube amp transformer or choke for Fender. Part No. For completeness, here's the current in the OT primary (resistive load), complete with PSU sag and ripple: we have some gurus who say that small OEM transformers (Fender) sound best because they ('65 Princeton Reverb reissue). 95 Shipping. Price $53 + $7. 5 ohms at the secondary and 277 ohms at the primary. 9 free can be used transformer from low buget universal AC-DC adapter whose secondary voltage between 3-12 V provides a sufficient range if i remember correctly the transformer windings measured with a DMM, (DC resistance). We used it at practice, turned it off @ the end, and when he turned it on @ next practice, it wouldn't turn on. 75 In stock: Click on photo for larger view: The power tubes are standard 6L6 pentodes. An 8 Ohm secondary load reflects a 29,000 Fender DRRI -- Reverb / VIBROVERB Transformer Fender Part Number: 0037099000 When a botton is pressed DC current from the battery flows through the connected winding. Bigger output transformer (Deluxe Reverb) – More power. Stancor A-3880 new in original box with instruction sheet. The voice coil has a DC Resistance of 6. $25. My recommended bias measurement method is the "Output Transformer Resistance Method. Plenty of lead wire, four connector cable. Fender Vintage Style 4 Hy 50mA DC - 6V6 Choke - APD-8040H. These were taken from a vintage A&amp;M studios HAECO (Holzer Audio Engineering Company) console from the late 1960’s. The transformer is in working The Hard Way to Add Reverb. Mercury Magnetics SET of 5 'Smooth DC' Special Edition Chokes -- 1H, 3H, 5H, 7H, 10H. 194B: Used in Super* chassis: 6G4, 6G4A, See a chart which lists AC impedance and DC resistance measurements for reverb tanks here. Typically (in Fenders) used with a 12AT7 tube Up for consideration is a transformer set for a Fender 65 Princeton Reverb Reissue from Mercury Magnetics. You can also measure the DC resistance of the tank transducers with the tank disconnected from the amp. Larger than stock #125A1A — 3-9/16″ Magnatone showed us three killer amps that have their own flair. Watch. New & Popular; Deals & Steals; Price Guide; News; Fender 65 Super Fender Reverb Transformer, as used on Twin Reverb, Super Reverb, Deluxe Reverb, and other models Hammond's Fender Bandmaster series guitar amp replacement transformers and chokes are designed for 40 watt Fender Bandmaster and Bandmaster Reverb amplifiers. 3 Ohms which is within the correct range for an 8 Ohm speaker. Part #037099: $39. Rated 4 henries at 90 ma DC. Reverb still doesn't work. Fender* No: 125A1A, 022640, 041318 Core: Paper. 99. Fender Part No: 041397 Reverb Spring 1BB2E4A Reverb Pan Detailed examination of the rebuild of a Fender Deluxe Reverb tube amplifier with options including bias test points, pentode/triode, channels in phase, improved tone circuit on normal channel. Premium guitar amplifier power transformers, output transformers and chokes. None of the 12AT7 reverb drivers come close to this limit. Nominal plate load will be * Approximate DC resistance of transducer coils can be used as a reference for input and output impedance if the original reverb particular should be kept away from transformer fields. The Thordarson is a 3-6 ohm primary with a 25-36k secondary. This one is used and the lead Voilà! DC on the output transformer primary. Full length wire leads, and original mounting nuts included Suitable for any Super Reverb from the Blackface and early Silverface era Dated to 1st week of 1969 Thanks for looking, and please check my feedback Features Fender Super*, Super Reverb*, 40 Watts Physically, parts were designed to look similar to original factory units (where possible). I’ve included a schematic of the unit t I'm repairing my bandmate's Fender Reverb tank reissue. This current will rise based on the laws of induction until it reaches a value limited by the winding resistance. Fender No:* 125A1A, 022640, 041318 Core: Paper. Otherwise, the cable that connects to the tank 'input' should be able to drive an 8 ohm speaker. (A saturating transformer would supply strongly reduced drive voltage and current to the tank. G. for Hiwatt', 'brand': 'Hiwatt Upgrade power transformer for a Fender Blues Deville USA or Reissue with 220v, 230v, 240v Primaries. core size :EI60/30dimensions: 62mx51. $130. New Price $10 + $6 Shipping. This method In SE transformers there is a DC current which causes inductance to drop more than designed. 4% per 10°C) and a cold transformer has a lower DCR. 1760H: 4H @ 50 mA DC Part No. "Fritz" Mod Classic mod to send both channels through the reverb The Power Transformer and Output Transformer are attached to the other side of the chassis. Impedance values are shown. Your quest for truly inspirational and superior tone has led you to the final link in the chain – Mercury Magnetics. Cheers! Close. 58 A AC Secondary 3 (Green - Green) 6. New Price $69. $30. Great for new builds, upgrades or replacement. Hammond 3A-1176 Plate to Line output transformer PAIR tested good DC ok in primary Part No. 770-4378-000 Fender Transformer Cage For '68 Custom Vibrolux Reverb Amplifier. Used – Very Good. The taps on the transformer dont read "impedance" with your dmm, rather DC resistance. Reason is that copper resistance increases with temperature (by ca. Thanks R. So, if I look at the grid=-8V Hello Friends, I was going over the data sheet for a 12AX7 trying to confirm why fender used a 29k primary impedance for the reverb driver transformer. My guess is the old Power Transformer: The power transformer (or PT) receives the 120 volt AC supply from your wall socket and ramps it up to two or three times that amount in the first stage of many that provide the voltage that the tubes run on. plate voltage curve is about 58k ohms. In the 50s Tweed era Fender specified 50246 output transformer for 5E3 Tweed and often substituted this multi-tap Stancor A-3880. $29. The The reason I checked in the first place is that I’m doing a bit of an experiment with a Thordarson 20A04 input transformer used in place of a fender reverb transformer. 194A: Used in Deluxe* chassis: Deluxe* and Deluxe Reverb* Fender* No: 125C3A, 022707. The primary of the transformer is blown open, yet the slow-blow fuse did not blow. I agree with what you said. The 1x8 Starlite Reverb is still the single-ended 5W combo with a single 6V6 & 12AX7 that can bark between a black-panel and tweed, but now it includes The 10pF capacitor in parallel with the Reverb Mix resistor is simply a bright cap. These resistors and capacitors form RC (resistance capacitance) low pass filters Vintage Original 1960s Fender Super Reverb Power Transformer Works perfectly. View similar gear. If I run a DMM set to ohms from Blue to Red wires, will the DMM show about 25K Fender Schumacher original output transformer removed from a working 1966 amp. Reverb Transformer Test If the resistance is Nil or low Fender Reverb Transformer E-037099 Reverb Driver Transformer. This accounts for DC winding resistance in the transformer primary, which we do not include in our SPICE simulation. Fender Deluxe Reverb Power Transformer A014956 EIA606-150. 6 VAC @ 1. These circuit values correspond approximately to the 65 Fender Twin Reverb Amp but with two tubes (instead of 4) and with an 8 Ω speaker load (instead of the 4Ω load for 4 tubes). Mixture of new and used. 5 Watts. Fender Vibrolux*, 35 Watts, Vibrolux Reverb*, 40 Watts; We do have a great deal available when you help us add any missing antique tube amp transformer or choke for Fender. Pacific Transformer Fender Blackface Deluxe Reverb Power Transformer 2021. Frequency Response: 12hz-46Khz -3bB at 1W output (EL84 triode without GNFB, Idc=36mA) Maximum output power 5W. The Output transformer is a Mercury Magnetics Axiom FRO. com DISCLAMER: * Hammond Mfg. Comes with a schematic for the amp, the original knobs for the amp, the original plastic handle for the cab, and the original wrinkled brown paint metal cover for the amp controls. Originally $199, now $113. So, both reverb lines must have a coupling cap to insure there is no dc resistance path to ground that would upset the grid bias of V2B. It may be possible to drive two speakers, but they would need to be twice the impedance of the stock speaker. For amps with reverb you could use the reverb footswitch phono plug if you are not using it. ga('ec:addProduct', { 'id': 'TH7239', 'name': 'Output Transformer for Hiwatt Custom 200 (DR201, 4x KT88)', 'category': 'Output Transf. Choke - 4H @ 50 mA DC. Reverb transformer as found in the Fender™ 65 Twin Reverb Reissue, 65 Super Reverb Reissue, 65 Princeton Reverb Reissue, and 65 Deluxe Reverb Reissue. Meanwhile, the PT also produces a low-voltage, but high-current, 6. It's brand new and unused. 1. I was thinking All of the tubes test ok, and the reverb transformer measures ok in terms of DC resistance: 800 ohms across the primaries, about 1 ohm across the secondaries. 49 Whatever, if the reverb control doesn’t affect the noise, then a noisy anode load resistor on the 2nd or 3rd stage of the fx channel may be likely suspects (V2 pin6, V4 pin6). Resistances measured with transformer disconnected. The primary DC resistance is reading 1. Tags: g u i tar amp, rep l acemen t, amp l i fi er , fen d er Vintage Fender output transformer rated at 4 ohms model 022889 made in the first week of 1976 (date code 606601) by Schumacher. ) and were usually the beast responsible for the Dual Showman reverb and Twin reverb etc. WARNING: A tube amplifier chassis contains lethal high voltage even when unplugged--sometimes over 700 volts AC and 500 volts DC. Transformer - Output, 5W, 5k & 8k Primary Options, Upgrade for Fender® 1964 Princeton Output TransformerTests perfectly in and out of an amplifier Primary winding resistance is 297 ohms brown to blue Have a vintage rebuild or a new project? Pacific Transformer Fender Showman Dual Reverb Output Primary Dc resistance: 525 Ohm. $40. core size :EI60/30. Photos The way this part of the circuit works is AC voltage from the power transformer enters the bias range resistor, which drops the voltage I'm taking a look at my friend's Fender Super Reverb reissue amp whose reverb quit working. P-TF41316 Power Transformer for Fender Deluxe/Deluxe Reverb 330-0-330 V, 120 MA. So everything seems to work, but still very weak reverb. 7 mA DC, 388 VDC @ 200 mA DC Secondary 2 (Brown - Brown) 53. But one reason seems to be higher winding resistance of the vintage power transformers. 4V, just like first stage. Watch this gear and we'll notify The Blackface Deluxe Amp is often misinterpreted as a Deluxe Reverb without reverb. Even though I had a wire gauge and dc resistance. In each case, the wall voltage was adjusted by variac to get Please see attached info for a Fender style reverb transformer. 187 faston connectors, X-Mount with 1 3/4" mounting centers. 194A Used in Deluxe* chassis: Deluxe* and Deluxe Reverb* Used in Deluxe* chassis: Deluxe* and Deluxe Reverb* Fender* No: 125C3A, 022707. But in the Fender circuit the two plate are in-parallel, so, the effective plate resistance is then half that, or, 29K. Logical schematics . ) The DC plate current is 1. WARNING: this unit does not have a power transformer, so it should be upgraded with an isolation transformer to ensure safety. 95 The speaker functions correctly with no issues. Fender Deluxe Reverb, Deluxe (SOME), Vibrolux /Tremolux - Replace Power 6 Vintage Stancor WF 30 Audio Line Transformer Eqv to a UTC A-20. 05. Based on the evidence from the silverface Twin Reverb/Vibrasonic Reverb schematic and the date range given for the Vibrosonic Reverb on the Fender Amp Field Guide, I'd say the OT is 36th week of 19 7 2, and was ordered as a replacement for a damaged Vibrasonic OT. Contact us at Guitar@hammfg. I've taken DC ohm readings of the circuits on the secondary sides, and while the heater / 6. AC-DC Adapter Charger Replacement for Casio Casiotone CT-640 Electronic 465 Sound Tone Bank Keyboard Switching Transformer The power transformer and power output chip are carefully chosen for low cost. 75 A AC Vintage 1967 Schumacher made Fender Bassman Output Transformer in perfect working order. The DRRI power transformer is definitely larger than the vintage Deluxe power transformer. 7 ohm Brown - Red = 152. 7K primary, 4 ohm secondary. Also, post the DC voltages at pins 1 and 3 of V3, the 12AT7 reverb drive tube. The 2250 ohm output impedance will measure around 200 ohms DC resistance. Mercury Magnetics transformers are the highest quality transformer upgrades for the Deluxe Reverb (vintage and reissue models) and Hammond's Fender Reverb (Stand Alone 1963) series guitar amp replacement transformers and chokes are designed for Fender 63 Reverb amplifiers. Replaces Fender part number 022921. From what I could dig up on the inter-web these were rated at 100 watts (4-6L6's etc. 9 ohm Blue - Brown = 305 ohm Blue - Red = 152. So, the Fender 25K:8 ohm transformer makes sense (to me), it's in the right ballpark. i got a chance to compare with an twin reverb transformer. 022921 reverb transformer. Free Shipping. Runs cooler, regulates better than original due to improved insulation technology that allows larger gauge secondary wire, resulting in more than 50% less copper resistance on the secondary than the Upgrade output transformer for your Fender Custom Vibrolux Reissue offering an SRV-style over-sized OT with 4 & 8ohm taps. , and the secondary almost 0 ohms. Replaces Fender part numbers 125C1A and 22699 . Finally, if the amp Fender Enforcer Humbucker Pickup. 290D2X Choke - 4H @ 90 mA DC. Equivalent to 125A1A & 041318. Deluxe Reverb Amp Output Transformer Replacement for Deluxe and Deluxe Reverb, 8 ohms. The Red/Yellow wire is grounded to the chassis to complete the bias In many Fender 1960 and newer two channel amplifiers the first tube on the right, V1, is for the Normal channel only and can be pulled out and used to replace all the other small tubes in the amp to find a bad tube. This allows me to set the Mid control to minimum and get Fender "normal" 6. Typically (in Fenders) T RANSFORMER, Fender™ REVERB DRIVER. Mercury Magnetics Reverb Transformer for Fender '65 Deluxe Reverb Reissue DRRI. Fender Normal Channel Reverb Mod Apply reverb and tremolo to both channels the way Fender did it in the 68 Custom Deluxe Reverb. New, comes complete with Mercury Magnetics sticker and metal nameplate. 95 price drop. Full length wire leads, and original mounting nuts included Suitable for any Super Reverb from the Blackface and early Silverface era Dated to 11th week of 1969 Thanks for Hammond 3A-1176 Plate to Line output transformer PAIR tested good DC ok in primary. Add A hand made recreation of a unique&nbsp;transformer for late 50's 6V6 Tweed amplifier builds The original Triad 108 output transformer was standard fitment on several different amplifiers in Fender's catalog during the late 1950s. Frequency Response: 20hz-40Khz -3bB at 1W output (EL84 triode without GNFB) Maximum output power 5W. In normal use the 3 output windings are strapped in series to drive An often overlooked output transformer that's a piece of Fender history, the SST107 captures everything that made this Tweed Princeton output variant unique and distinctive. That said, changing tube type is a distinct possibility to achieve the aim, but a 12AU7 or 12AX7 would be ideal if I can make it work with appropriate changes to resistor and cap values. 5mmx55mm Upgrade power transformer for your Fender Custom Vibrolux Reissue offering a 120v Primary. If you have Unused Jensen JT-123-A Quadfilar 600 Ohm Steel Core Line Output Transformer. Mercury Magnetics transformers are the highest quality transformer upgrades for the Princeton Reverb (vintage and reissue models) and they work exceptionally well to put the final touches on an amp with our modification kits. The AC voltage comes from the Red/Blue wire on the power transformer. For information on the evolution of the Fender Deluxe and Deluxe Reverb circuit see this. Product safety information may be available here. 194A: Used in Vibrolux* For Fender Reverb transformer for Rp = 25 kohm and Rs = 8 ohm gear ratio is 55. I measured the voltage at the reverb driver tube pate and I have 470 volts. DC resistance: 0. Layout . 4H @ 50 mA DC Part No. Common cathode resistors even as low as 680 Ohm have been used in reverb driver stages of SF amps using the standard No. com Fender Original Hot Rod Deluxe Power Transformer. I have two original 1958 Fender 5E3 Tweed Deluxes, one with 50246 output transformer and one with Stancor A-3880. Power Unused Jensen JT-123-A Quadfilar 600 Ohm Steel Core Line Output Transformers, LOT OF THREE. com. Hello, I'm building a Mojotone Blackface Princeton Reverb kit and plan on installing an adjustable bias control. The fender transformer (as I’m sure you all know) is a 29k primary and 8 ohm secondary. Brand New Tweed Deluxe push-pull output transformer replaces Up to 80% off PT details: J022756 (code 606-2-03, so 1972), DC resistance measurements red to centre tap 12. 29 Transformer 355-0-355 / 6. The power transformer is a P-TF47609 from Triode Electronics. 5K 28mA plate load to 8 ohm reverb tank input. The chassis stamp suggests 1969 but upon inspection of what I believe to be the original choke, power transformer and reverb transformer, these are all showing date stamps for their production being very early 1970, ranging between weeks 9 and Pacific Transformer Fender Showman Dual Reverb Output Transformer 2022. Complete set of transformers for a Fender 6G15 stand alone reverb unit. 2k. You can also test a power transformer by measuring the resistance between leads. " You can also measure the actual plate current by shunting the output transformer with a multimeter in the DC milliamps mode and use the Tube Dissipation Using Plate Current calculator. $178. Here is a plot of AC plate-to-cathode voltage and AC plate current for <div class="shopping-layout-no-javascript-msg"> <strong>Javascript is disabled on your browser. Fender Output Transformer 1960’s-1970’s Vibrolux Reverb, Bandmaster, Pro Reverb 022848. Schumacher is one of the original Fender transformer suppliers. 9, or for Up = 230V~ with transmission ratio of 55. 30-Day Return Policy. 187 faston connectors, X-Mount with 1 3/4 So, if I look at the grid=-8V curve, the inverse of the slope of the plate current vs. is not affiliated with Fender Musical Silverface Reverb Fender* No: 125A10B, 022913. See P-T290-FENDER-120-UP for upgraded 120 V transformers, P-T290-FENDER-240 for 240 V transformers; Heyboer Transformers, Mercury Magnetic Transformers, Jupiter Condenser, F&T Caps, Tubes, Sitches, Jacks, Wire and all kinds of Amp Parts available online from amppartsdirect. Unfortunately, when that repair was made, the model of the similar name was really 4x 6L6's:8Ω. Specifications Primary 120 VAC @ 60 Hz (Black - White) Secondary 1 (Red - Red) 495 VDC unloaded, 440 VDC @ 65. Cheers! Mercury Magnetics SET of 5 'Smooth DC' Special Edition Chokes -- 1H, 3H, 5H, 7H, 10H. There is a nice chart on page 4 of this pdf: https://www. This is a fairly soft limit. 22699 Choke: Choke core measures 2 1/4 inch wide X 1 7/8 tall X 1 3/4 inch deep over the covers. 5V. In-circuit I get about 450 VDC after the rectifiers, and that's with 122 volt mains. Guitar signal enters at upper left and gets amplified by the Reverb Driver (both stages of a 12AT7 tube in parallel) then flows into the Reverb EXPORT POWER TRANSFORMER PT-47610 NOW AVAILABLE! (SEE DROPDOWN MENU) OT-47605: Matches 7. 2 ohms. 009-7298-000 Genuine Fender Replacement Switch for Footswitch 0071359000 Super Champ XD. I cloned it. * Deluxe* and Deluxe Reverb* as listed above under power transformer. The reissues do not use a 12at7 for reverb like the older models did. Because I seemed very simple. Another way you can drive a high input impedance reverb tank is to use a transformer. Add to cart. Max Dc current :95mA. AB763 Blackface Modifications. Designed to support (2) 6L6 output tubes into a 4 Ohm load, so a 2X10 or 2X12 speaker complement at approximately 40 Watts output. Setting the bias adjustment controls to these listed voltages in no way guarantees that your amp is properly 1) The DCRs of the OT primary halves may differ up to 20%, depending on transformer construction. 95 price drop) $199 Original price. but it did not. Heater winding to plate winding, open circuit. 290WEX: Used DC resistance reads in the mid-20s for each pickup. Therefore, the quiescent operating point for a single triode (1/2 the 12au7) would correspond to the intersection of 410v with the chosen grid bias voltage on the average plate characteristics chart for the 12au7. Roughly 300 ohm primary dc resistance. Explore. Overview; Brands; Articles; Warranty; Articles; The Fender 5F1 Champ is a Class A cathode biased amp. Tried a few one-tube reverb installations, all checks out with schematics but the reverb is very low. Mounting centers are 2 3/4 inch apart. Reverb AA270*, Reverb AB668*, Fender* No: 8087, 125P5D, 125P5DX, 022798, 022806 Core: Bobbin. missing antique tube amp transformer or choke for Fender. Thordarson T-75R47 3300-296 911 010 279613. 2 - Transformer Drive. The rough dimensions are basically the same as those of the AB763 Vibrolux power transformer (Fender 022723 and 125P26A). Pulled the reverb cables and tested the reverb transformer red-blue = 1. Does this mean the reverb transformer is dead?? Thoughts. robrob Normal Channel Reverb Mod The preferred way to apply reverb and tremolo to both channels and allow channel jumpering. About Us . 5mmx55mm (86mm foot distance)footprint hole 5x6mm weight: 750gr per transformer. The top of the unbypassed cathode resistor also offers a convenient insertion point for negative feedback from the output transformer secondary. And AFAICT what Fender used (and is now cloned) is an old-old type '42 radio OT intended to run with 250V B+ at 15mA-20mA. When a second speaker is plugged in, the center-tap of the output coil is selected, halving the output impedance to 4 ohms. The tube is wired in But there is no guarantee that the transformer made by Fender wil measure the same resistance as one made by MM or whomever, even with the same turns ratio. Is that not enough? Driver is a standard Fender replacement 25K:8, tank is a 4AB3C1B. Not sure if that sounds about right or not. 90. Reverb transformer measured 1K2 primary DC resistance and secondary 30 ohms DC resistance. Resistance measured 0. 4. 2) You may get somewhat different DCR readings at different times. $113. I used the proven circuit from the AA1164 Fender Blackface Princeton Reverb and offer up layout diagrams for a simple reverb Mercury Magnetics 'Smooth DC' 10 Henry Special Edition Choke. Equivalent to #125P23B. The numbers people are floating around don't match what the DC resistance indicates exactly. Unlike some tanks, Revisit Features Fender Deluxe* 15 Watts, Deluxe Reverb* 22 Watts Physically, parts were designed to look similar to original factory units (where possible). HM4800-ND (194B) Used in Super chassis:* 6G4, 6G4A, Reverb AA270, Reverb AA763, Reverb AB568, Reverb AB763 Replacement for Fender part numbers 022921, 003-7099-049, 037099, and 125A20B. The tank in here is a 10ohm input. Rated 4 henries at 90 Up for consideration is a set of Mercury Magnetics Power/Choke/Output Tranformers for a Fender 6G15 Reverb Unit. HM4799-ND (194A) Used in Deluxe chassis If you have another vintage fender amp, you could test the 4AB tank in there. Fender Twin Reverb 220volt power transformer. The "input" cable connector showed 1. Fender Reverb Tank To Amplifier Cable, Stripped Upgrade domestic power transformer for your vintage Fender 65 Deluxe Reverb or Reissue model. (schematic in post #2) TRANSFORMER, Revisit™ Fender™ REVERB DRIVER. Mercury Magnetics transformers are the highest quality transformer upgrades for the Custom Vibrolux Reverb (vintage and reissue models) and they work exceptionally well to put the final touches on an amp with our modification kits. Check out our reverb transformer and a twin reverb schematic for your tube reverb project. 5Henries * Four-conductor output for split/phase options * Fender Part No: 0992138000 This part is incorrect, the DC resistance is much lower than the impedance for reverb tanks. 10" leads with . We do have a great deal available when you help us add any missing antique tube amp transformer or choke for Fender. I pulled the rca cables from the back of the amp and checked the resistance on each one. The B+1 DC voltage flows to the output transformer's primary winding and to the circuit board's three large filter/reservoir capacitors and two voltage dropping resistors. This output transformer is designed for a 2 ohm load as found in the 4-10 speaker configuration of the Fender Super Reverb or a Fender Concert amp that being Black Face or Silver Face 1960's era. 95kohms, black/green=1ohm but red to green = 30kohms but dropping resistance. $135. In the Fender ab763 type of reverb circuit, the cathodes of the reverb driver tube sit at about 8V (with the 2. Blackface Reverb Era — Single 8 Ohm Secondary. Brand New. 95 price drop) View similar gear from other sellers on Reverb. Free Primary Dc resistance: 530 Ohm. 6 VAC @ 3. Fender Deluxe Reverb Amp Output Transformer 5E3 125A1A, 041318, 6V6, 6BQ5,EL84, 6L6. This listing has ended. Electrical Windings 5:1 [100 Ohms] A-34266 DC-254 Vintage Output Transformer OT Tested 5:1 1:1 Tube Amp Audio. Power Transformer, Output Transformer (8ohm), and choke. The reverb transformer is a reactive load of approximately 22k ohms, with essentially 0 DC resistance. 3. List of Mods. 0mA RMS (39. One thing that I'm suspicious of is the amplitude of a 1kHz signal before after the 500pF capacitor on the way to the reverb driver tube grid. Replacement For P-T1750J Pro-Reverb Tremolux Vibrolux Specifications: Part No. Fender™ part number 0037099049. Switches Plugs & Harnesses Resistors Fuse Holders Reverb Parts Transformers Wheels/Casters Refurb & Mod Kits Vibrato Parts: Fender™ Hardware (Also see our complete line of hardware) 475 Volts DC Common replacement in many vintage Fender Amps. 8k mid resistance Fender Deluxe* 15 Watts, Deluxe Reverb* 22 Watts; Deluxe* and Deluxe Reverb* as listed above under power transformer. Sale price $130. Categories: Amp Parts; Made In: United States. It appears at 250v it’s Ra is 62. If we apply the same voltage at all frequencies, we will find that current through the coil is less at high frequencies than at low frequencies; the reverb will have a natural low-pass filter applied to it. Not constant. Fender measures -1. 110 Hammond use tube plates DC blocked by capacitors for reverb. There is a voltage/frequency trade-off. For vintage blackface and silverface Deluxe Reverb, Princeton Reverb, Twin Reverb, Pro Reverb, Super Reverb, Vibrolux Reverb, etc. This is similar to the current model Jensen JT-123-ALCF, but with a steel core. 86mA per tube. 81Ω, and; nominal drive current: 28. I have a 1967 black face pro reverb with Schumacher OT, it is very simple wind, only 1 primary and 1 secondary, but the sound is really good. 220K or more. Please note that the circuit below shows a Princeton-Reverb, but the change in a Princeton will be likewise. Equivalent to #036958. In the accutronics literature they state to match the impedance and then say to use a current source with a source resistance of at least 5x the impedance at 1kHz. I tried to design the simplest 2-tube reverb & Tube Tremolo layout possible. Show More Fender Pro Junior Output Transformer Upgrade- Thermionic Lab TECHNICAL FEATURES:Primary Impedance: 6k6 (Anode to Anode)Secondary Impedance:8 Ω Primary Dc resistance: 208 Ohm (anode to anode)Max Dc current per tube :130mA (Anode to CT)Maximum output power :18WLead wire lengths: 400mmcolor Fender | Deluxe (65 Reverb Reissue), Deluxe (68 Custom Deluxe Reverb), Deluxe (Blackface/Silverface-Reverb) | Output Transformer. The center tap, Red/Yellow wire, is the other end of the transformer winding. (45 mm) apart. 5K per side. Fender Pro Reverb (1) Fender Twin Super (1) Secondary 0V - 50V (1) 300V - 320V (2) 320V - 400V (1) Application Power (649) Information. 194B: Used in Bandmaster* chassis TRANSFORMER, Revisit™ Fender™ REVERB DRIVER. For reference I have included a photo of a 1956 Fender Pro Amp from the web to show what it looked like with a Jensen P15N speaker – complete with the output transformer mount. The graph shows an example of an unbranded 600 ohm tank I measured -at low frequencies it bottoms out at the DC coil resistance. 00 each for the one I used for testing). If you have a test speaker, you could hook it up and listen. Mercury Magnetics Fender Custom Vibrolux Reverb Output Transformer - FBFVIBV-O. All the little drive circuits are similar, so most anyone's little reverb tranny will work. It might seem so if you take a look at the front panel and the knob functions. It is an interstage transformer with primary DC resistance of 1,190 ohms and secondary resistance of 1,265 ohms. Whilst the Fender transformer driven circuit is tried and true my preference is to stay true to the original if that is possible. The plate supply voltage Vp is 450VDC, the control-grid bias voltage is -44VDC, and the quiescent plate current per tube First, the bias voltages you see listed on many schematics, such as 52V on a black-panel Fender Twin Reverb or 51V on a Marshall 100W Super Lead schematic, are merely approximations of the voltages that should be expected in that area of the circuit. I have recently purchased a Silverface Fender Dual Showman Reverb amp that was produce very early in the year of 1970. Found these specs online:WF series: See a chart which lists AC impedance and DC resistance measurements for reverb tanks here. 2K cathode resistor, 450V plate V). 3V Hammond 3A-1176 Plate to Line output transformer PAIR tested good DC ok in primary. 40. Choke - 4H @ 90 mA DC. X Mount on 1 23/32 2 hole centersA 4 Ohm secondary load reflects a 14,500 Ohm primary impedance. 5W, 5 ma DC. Please make sure the amplifier transformer which you are replacing has a Fender number matching the equivalent Fender transformer Replacement for Fender Deluxe, Deluxe Reverb. but output transformer winding is really difficult. ) The original Fender 022921 reverb transformer has a primary DCR of 1700 Ohm to 1850 Ohm. Same one you'd use for a Princeton Reverb. Below are details of 4 Deluxe-style amps, two of which I own(ed). The Fender 12AT7 scheme will approach 0. Ships FREE via USPS. Got a Fender one on hand? Clip it in place of the original. See pics for condition. This amp uses a small power amp chip to drive the reverb so my guess is a low impedance type is used, perhaps an 8AB2C1B. Watch this gear and we'll notify you if Classic Tube Transformers, Inductors & Chokes, Line Transformers, Power Transformers. 9 ohms; bias tap to centre tap 4. </strong><br> To view this site, you must enable JavaScript or upgrade We do have a great deal available when you help us add any missing antique tube amp transformer or choke for Fender. View similar gear from other sellers on Reverb. Wherever possible, these transformers use parts and designs similar to original factory units to preserve look and tone. &nbsp; Upgrade domestic power transformer for your vintage Fender Princeton Reverb or reissue. Used – Good. Still has wax on leads, never wired to. New Condition - Without packaging or mounting hardware; Black; F spacing; 4 Wire; 24K Ohms; Fender Logo on back * Fender Enforcer Humbucking Pickup * Position: Bridge/Neck * Magnet: Ceramic 8 * DC Resistance: 24K * Inductance: 7. 4H @ 90 mA DC. as for the neon bulb replacement i need to know how much current the original bulb had to accept in the vibrato desing. V2-b's grid path must only connect to ground through R17. 6mA peak). Standard replacement for Fender (tm) reverb driver transformer, also works great with DIY projects and as a general replacement. dimensions: 62mx51. Resistance-coupled amplifiers are much less efficient than transformer or direct coupled. The Input (Drive Transducer) should measure a little less than 1 Ohm and the Output (Recovery Schumacher output transformer for Fender Champ. I'm wonderingin two of my builds, I had the B+ going to the reverb transformer (red wire) at the first dropping node, where voltage is around 330-350V. Unlike some tanks, Revisit Vintage Original 1960s Fender Super Reverb Power Transformer Works perfectly. 3 fully functional Mercury Magnetics Deluxe reverb transformers. Anyway, I was able to get rough power transformer dimension information without pulling the chassis. Fender 099-2222-000 Deluxe Drive High-Output Stratocaster Pickup Set 2010s - White. Rated 3. The Fender Twin Reverb AB763. I’ve heard something about the bulb test but you’re kinda making it act like an ignition coil using dc. Blackface, Silverface, Princeton Reverb* AA1164, Reverb AA764, Reverb B1270, Blackface and Silverface Fender Deluxe Reverb Power Transformer A014956 EIA606-150. 3 / 5 V Vintage Power 125 mA DC Tested Tube Amp Project 1956 View similar gear from other sellers on Reverb. Matsushita Replacement G Key (ESK-70 Keybeds) for Polysix, Memorymoog, OB-8, Prophet-600, AX-4, and more. A healthy Hammond 270AX 240-0-240v power The last component is the transformer. Choke core measures 2 1/4 inch wide X 1 7/8 tall X 1 3/4 inch deep over the covers. 022871 converts to 125A13A606725 (606 - Schumacher, 7 -1967, 20 - 25th week of 1967). Upgrade power transformer for your Fender Custom Vibrolux Reissue offering a 220v, 230v, 240v Primaries. Show More. Equivalent to Fender™ #125A20B & #022921. Perfect for blowing up the front of an amp or pedal. See a chart which lists AC impedance and DC resistance measurements for reverb tanks here. All in good working order. Power Transformer Domestic 120V, 60 Hz. Secondary 1 (Red - Red) 495 VDC Standard replacement for Fender (tm) reverb driver transformer, also works great with DIY projects and as a general replacement. This extra size allowed two 8" Fender Special Design C8R speakers to fit nicely. This uses the "Fender" type replacement reverb transformer and tank that Hoffman sells. . Core: Bobbin Output Transformer - 4, 8, 16 Ohm Part No. 95 + $12. At lower volumes I don't hear any real difference between the two Premium guitar amplifier power transformers. 3 Ohm DC resistance. As most of you know, this circuit comes with a non-adjustable bias, controlled by a single 22K resistor, which I assume would yield a plate current near 20mA. Fender™ Tube 60 Series (Super 60, Super 112), Fender™ Frontman 65R, Fender™ Eighty-Five, Fender™ Sidekick Reverb 35, Click the link above for Tube amp info, Schematics, Board building information, Projects, Mods, Transformer diagrams, Photo's, Sound clips. For further technical info/ questions, or any other custom item For guitar you could build a fender front end clone. For example, typical fender BF tank input impedance is 8 ohm but measures about 1 ohm DC on your meter. There are hundreds of pages of Tube amp information on my library page. The transformer is fully tested and working. The calculated DC grid bias for an average 12AX7 is -1. Free Shipping Some blackface Fender amps use an 8-ohm, center-tapped transformer. 0 and 12. $13. power transformer Fender* No: 125A1A, 022640, 041318. $85. Transformer - Output, 5W, 5k & 8k Primary Options, Upgrade for Fender® Champ. Need Assistance? Contact Us. I have this '69 output transformer that reads: Green - Black = 0. 05 ($85. Free Shipping Fender Twin Reverb, Dual Showman, Quad Reverb, and Bassman 100 - Replacement Power Transformer. (818) 998-7791. Simply measure the DC Fender Reverb Transformer #022921. Regular price $27. If the reverb control does affect the noise level, then the reverb recovery stage anode load resistor (V4 pin1) may be the problem. The effectiveness of the shield varies with ’63 Fender®Reverb ®(Reissue Stand Alone) 4AB3C1C I just hook the transformer up to 120 volts ac through a variac and test secondary voltage output after doing simple resistance/continuity tests for verifying no shorted windings and confirming wire/winding groups. 3 / 5 V Vintage Power 125 mA DC Tested Tube Amp Project 1956 Please make sure the amplifier transformer which you are replacing has a Fender number matching the equivalent Fender transformer Your primarys might read 150-350 ohms plate to center tap, and yes its normal for your 8 ohm tap to read . don't remember right. $14. Fender's transformer-coupled 6K6/6F6 will deliver near 1 Watt. 7 ohm Searching on the web I haven't found info about those spec values. This reduces gain and increases input headroom. My very cool Fender AA270 silverface Bandmaster Reverb. Reverb Power Transformer International 240V, 50/60 Hz. About the Seller. Pri Ohms Sec Ohms Amplifier Fender Transformer Reverb for Twin Reverb, Super Reverb, Deluxe Reverb. 9, the secondary voltage should be the order of 4V~ For the gear ratio 55. But a closer study of the circuit design will reveal that the Deluxe Reverb vibrato channel has the extra gain stage (one half of the 12AX7 V4 tube) common for the Fender reverb amps. $141. 00 USD Regular price (/) • 50mA Brand new production, and made right here in Chicago, USA. The primary side has a center tap. See H100, various 40's 50's tone cabinets on captain-foldback. 3 ohms. In normal use the 3 output windings are If C4 is leaking DC then this would create a fault, but this is much harder to check! One more thing to check - the reverb transformer primary that is connected between the 6K6 screen and plate (pins 3 and 4). Speaker reads 6. loy almm kcpwok yiace fmgqjjgi gkhh pogh swsabo obn qor