Here is the OT you need Fender Output Transformer, Champ, Tweed Princeton, Harvard, Bronco & Vibro-Champ, 125A35A & 022905, Single Ended Type, 4/8 Ohm They have custom wound PT and OT's for my RUDE MOODS but I have not put them in a build yet to test them out. During the 1950's, Fender used mostly Stackpole (#304) pots. It just has a hum balance pot and "output tubes matching" pot on the back. specializes in amplifier transformers! More than 80% of our transformers manufactured is for this market and bring over 70 years transformer manufacturing expertise to our product. And it's amazing. This supply lasted for over five years. According to the 5Y3GT data sheet, a 42mA load causes the voltage to sag to 290V, as shown here where the red line crosses the 250V RMS curve. Tube Amplifier Power Transformer AND Output Transformer (from vintage kit) Rated for 15 watts audio power and capable of 50mA primary current. OldGuitarParts. The half-primaries of the output transformer should have identical voltages on them. I would seriously consider multiple output transformers. "Click" on thumbnail photos below for a full size photo of each part. Simply replace the output transformer (OT) with a Deluxe Reverb OT. Best Prices on Fender Transformers, Power Transformer, Output Transformer, Call For Assistance Fender Power Transformer, Bullet 15 DSP, 0025413000 Submitted by gpadmin on Tue, 01/05/2016 - 22:20. Remember, either the TO20 or TO20B output transformer fits perfectly and improves sound quality, especially bass perfomance. They are in pristine condition and have unstripped lead wires. Transformer winding is an extension of the fitting and turning industry. With the amp off and drained of residual power, I measured the resistance from pin 7 of each power tube to the white wire that comes off the output transformer. Has anyone tried an output transformer upgrade for the Fender Hot Rod Deluxe? Like Mercury Magnetics or another brand upgrade?If so, what is your opinion of the results in so far as the clean channel without any pedals?Is it noticeably clearer more defined when chording?. Drop in replacement Fender 40 Watt Output transformer with 4/8/16 ohm taps. The main parameters are: (a) the reflected primary impedance for a given secondary load impedance, which must match the needs of the particular tube being used, (b) the primary inductance, which determines the low frequency response, (c) the primary leakage inductance and. This code can be found on the power transformer, output transformer, choke, and reverb transformer. Black and Silver Faced Fenders use the same output scheme. Valve amp manufacturers purchase trannys from transformer winding companies. This should act as a step-up transformer to match the amps high Z input. Also might be used as an output transformer for a headphone amp or impedance matching device for headphones (eg: to match newer low impedance headphones to output of tube-type ham & shortwave receivers). Suitable for Bandmaster, Bandmaster Reverb, Pro, Pro Reverb and many others. I set the amp up so that 3 different sets of output transformers could be tested against the Electra-Prints. Standard replacement for Fender (tm) reverb driver transformer, also works great with DIY projects and as a general replacement. It doesn't make any difference which one you. How can I perform such test using instruments. In the above example, the transformer was made in either 1966 or 1976, week 45. component as expected from the tube output. Output transformers marked UPGRADE (below) allow for more versatility by added secondary connections that did not exist on the original units. To understand the role of the stack, a trip back to Leo Fender's world of the 1950s is in order. per Piece 5. com - View our excellent collection of Fender Transformers. This amp proved to be the most popular of the Pawn Shop series, but Fender’s policy is to limit each model. PLC Temperature Modules-OMRON K3FK-RS-45-5, 0-5V OUTPUT, 24V DC DC TRANSMITTER nvzyvq2697-best quality - www. Back in the day, the most common source of amp failure was the speaker. Drill down a little further, therefore, and it's no surprise that much of the effort lay in upgrading the amp's output stage, especially its output transformer (OT). Allen Amplification offers quality repairs of vintage 60s and 70s Fender™ tube amps with a typical turn-around time of 2 weeks or less. According to the schematic I should be seeing around 440v there but it's almost three times that. Good God, this amp came alive! I had previously retubed with JJs and couldn't really hear much improvement, although some. They are in pristine condition and have unstripped lead wires. Please remember that the Twin PS supplies over 400 volts to the output tubes and this can be lethal. AA763 125P5D 125A7A 125C1A 022921. 2 vertical Weight: 3. '59 Fender Bassman Tweed Output Transformer As a rough rule of thumb, the bigger the OT relative to the output tubes, the bolder a sound you can expect and the firmer the bass response. This supply lasted for over five years. (By the way this approach, should cut tube life, ) While I am not a fan of more iron in the amp, I would look at a transformer PI, and if not you might have to consider what design of PI you want. Some designs sound better with a small output transformer. I don't need a 60 watt amp. Besides a 1962 Blonde Showman amp, this just may be the nicest bass amp that Fender has ever produced. Here's what you do; Take your little 6. 02 In Stock. After all, an amplifier's tone is the sum of all of its parts—tubes, capacitors, wiring, speakers, etc. Okay, I think I've done this correctly. Fender Style Output Transformers. and my Peavey Delta blues never past 4. According to the schematic I should be seeing around 440v there but it's almost three times that. All reproduction transformer are hand wound to the exact original specifications of winding geometry, steel laminations, materials, varnishes and of course sound. The Plus Series offers Fender* and Marshall* type amplifier transformers for general replacement, upgrades and additional features such as international voltage taps. 2 vertical Weight: 3. They also use the more efficient negative-voltage fixed biasing on the output valves, allowing higher output power while running the output valves at a cooler temperature. 4-ohm and 8-ohm taps will cover everything as long as I configure the cabs properly. This amp proved to be the most popular of the Pawn Shop series, but Fender’s policy is to limit each model. Fender (Output Transformers) Model Names Similar to (MFG Part No. Working with Fender and surf-rock pioneer Dick Dale, our 100W output transformers became an integral component in the world's first 100W guitar amplifier. You will find you can get all the Santana tones with that kind of set up & a lot more!!! & if you want to sound Metal, try a Seymour Duncan Twin Tube Mayhem preamp b4 the amp. Fender Vibroverb Output Transformer 0036968000 Vibroverb, As found on current Fender reissue model. Here is the OT you need Fender Output Transformer, Champ, Tweed Princeton, Harvard, Bronco & Vibro-Champ, 125A35A & 022905, Single Ended Type, 4/8 Ohm They have custom wound PT and OT's for my RUDE MOODS but I have not put them in a build yet to test them out. Wound on paper bobbin. This should act as a step-up transformer to match the amps high Z input. "Start" and "finish" are arbitrary terms with respect to this configuration. Fender occasionally got them wrong, as some have reported 4-ohm transformers in Showman, and vice-versa. This transformer is a large blocky metal device mounted on the chassis of a guitar amplifier. Fender® Blues Jr. Although there is room for all three output jacks on the chassis I'm usually just asked for the 4 & 8 ohm. Output Transformer JavaScript seems to be disabled in your browser. The two probes are applied to the center tap and either of the ends of the output transformer's primary. Yes, the power transistors give up earlier than the transformer but if the transformer is too small right from the start you are calling for trouble. Fender Part no. Includes tips on measuring an. This protects primarily the output transformer from overcurrent, usually the result of an output tube short. In order to navigate out of this carousel please use your heading shortcut key to navigate to the next or previous heading. It is much beefier than the stock output transformer, but it is small enough to fit the stock holes. In this case, the original Super Twin transformer has a P-P impedance of 1500 ohms, which is proper for six 6L6s in Fender's tapped screen design. Upgrading the entire set will significantly improve the performance of the circuit as well as tone. white piece of paper glued on each with the fender logo on it and these numbers. Weber Speakers Homepage --- Loudspeakers, components, and equipment for the vintage musical instrument enthusiast. Auction is for one(1) Fender OEM Output Transformer for a Princeton Reverb Reissue This is a genuine Fender Part# A-0069362000. Fender used the "heavy" NFB circuit in the multi-speaker amps to compensate for their lower voltage delivered by their 2 and 4 ohm output transformer secondaries. Tweed Twin Low Power 5E8-A Output Transformer MOJO767 $99. It has a larger footprint than the chassis was originally drilled out for. Select the location for the output transformer making sure there is no conflict of space with other components and in accordance with the layout considerations given at the beginning of this article. Output Transformer Tube Amplifier Audio Single-Ended Z11 Oxygen-Free Copper 1kg Output Transformer Tube. The transformers are wound for 1:1 unity gain and are designed for 600 ohm to 100kOhm impedance. Fender occasionally got them wrong, as some have reported 4-ohm transformers in Showman, and vice-versa. Western Electric. Another example: a speaker code of 220820, in a Tweed era Fender amp (1950’s – early 1960’s), would be Jensen (220), manufactured in 1958 (8) in the 20th week (20) VINTAGE FENDER TRANSFORMER USAGE CHART. Using two cabs you are squeezing out 100W which gives the amp the final. Qty: Tweed Twin High Power 5F8-A. Gotta LOVE the sound of that Heyboer output!. the classic tone is a great transformer too. GENUINE FENDER OUTPUT TRANSFORMER FOR VIBROLUX. Output Transformers, EIA codes, tubes and hot-rodding. If you'd like to help out on this project, please fill out the form for each of the Fender tube amps you own. 5 watts at 5% at 1 KHz. Trying to diagnose the problem over the phone is not likely to be successful. The core acts as support to the winding in the transformer. Fender Vibroverb Output Transformer 0036968000 Vibroverb, As found on current Fender reissue model. A good Ohm meter, and knowledge of the resistance of a good output transformer would tell if the transformer was at fault. TO11S Heyboer output transformer rated 4,000 ohms primary to 4 or 8 ohms secondary. Large selection of parts and electronic components for guitars, amplifiers, synthesizers and tube and solid state hi-fi, quick shipping, expert technical advice. REPAIR SHOP Repair of Fender Frontman 15G Fault - The amplifier was totally dead. It is much beefier than the stock output transformer, but it is small enough to fit the stock holes. Some blackface Fender amps use an 8-ohm, center-tapped transformer. If it's an output transformer, make sure the speaker is not connected and there is no minimum load resistor on the output jack or diode from plate to ground, as is found in some amps. Custom made to original specs right here in the Home of the Blues, Sweet home ChicagoIllinois USA. If it's a vacuum tube amp and the speakers are in parallel, disconnecting one speaker will increase the output impedance lightening the load on the amp. Transformer winding is an extension of the fitting and turning industry. OUTPUT TRANSFORMER 15W 6950 CT Tube Valve DIY EL84 audio fender OT PP 6k9 ohm See more like this. transformers works on the speakers also. If it's a vacuum tube amp and the speakers are in parallel, disconnecting one speaker will increase the output impedance lightening the load on the amp. That, and the extension cabinets, and the speakers that went into them. Western Electric 171c Output Transformer For A 124b Tube Amplifier. Simply replace the output transformer (OT) with a Deluxe Reverb OT. Bigger output transformer. Good also for Showman and other amps using four 6L6 output tubes, good for 100 gracefully distorted watts into a 4 ohm load. The two probes are applied to the center tap and either of the ends of the output transformer's primary. Output transformer for Fender Deluxe Reverb and Deluxe Reverb Reissue. These are still manufactured using the same fine construction methods and premium materials as our Vintage series transformers. The half-primaries of the output transformer should have identical voltages on them. (that's where the white wire is soldered that feeds the OT) On V4 I get 305 ohms. GENUINE FENDER OUTPUT TRANSFORMER FOR VIBROLUX. The Pro reverb has a smaller OT than other 6L6 BF/SF amps like Super Reverb and Vibroverb. #125A6A 022848 4OHM TAP. Qty: Tweed Twin High Power 5F8-A. Testing transformer is very easy if you follow the procedure explained in this article. It is the same size as the larger Fender choke. Bring that old guitar or amplifier back up to working condition with these vintage parts & hardware. 015 µ 50KL REVERB. Items in Fender® Replacement Output Transformers Sort Item A-Z Item Z-A Item Name A-Z Item Name Z-A Price Low to Hi Price Hi to Low Items per page 40 80 120 50W/2 Ohm, 4 Ohm & 8 Ohm Fender® Replacement Output Transformer. In the above example, the transformer was made in either 1966 or 1976, week 45. for Orange Output Transf. Audio Output Transformers at Parts Express. Fender®Blues Junior®8EB2C1B TL072 1 3 2 4 8 +-+ 22 µ 47-15V +15V 4. for Marshall Output Transf. 6,000 + (and growing) factories in our existing network are eager to make it for you. Would that indicate that it was made the 46th week of 1973? There is a faint blue ink stamp on the side of the chassis that reads "T-4". Fender Hammond Fender Hammond Fender Hamond Fender Hammond Fender - Hammond Transformer Chart POWER OUTPUT CHOKE REVERB 6G15 68319 NA 125C3A 194A 125A12A 6G15 125P24A N/A 125C3A 194A 125A12A 6G14 67233 45550 125C1A 194B N/A AA763 125P34A 290FX/291FX 125A30A 125C1A 194B N/A Dual Showman AB763 125P34A 290FX/291FX 125A29A 1750W/1760W 125C1A 194B N/A. Remember the output is only 4 Ohms. I would seriously consider multiple output transformers. Fender sought to increase the output of the amps while lowering the amount of distortion. Transformers for Marshall Amplifiers. The Tweed Deluxe Speed Shop builds the finest Fender Tweed-era guitar amplifiers utilizing only the highest-quality new components as well as Speed Shop reverse-engineered TD58OT and TC58OT output transformers, A12Q and A10Q vintage AlNiCo speaker recreations, NOS (New Old Stock) resistors, capacitors, sockets, hardware - and vintage NOS tubes. Thanks in advance for your help. Without a load the DC output of the power supply would be 354V, the peak output voltage for a 250V RMS power transformer secondary. The idea is to test for shorts that occur as a result of arcing between the leads and the winding wires in the transformer. If you want to: - Make product changes; - Create something not in stock. Weber Speakers Homepage --- Loudspeakers, components, and equipment for the vintage musical instrument enthusiast. There is an untapped (single impedance) output transformer, rated for the intended cabinet (or combo speaker setup). Fender Part no. In order to navigate out of this carousel please use your heading shortcut key to navigate to the next or previous heading. It is the same as the above TO11C but mounted on its side the short way to prevent transformer coupled hum. Removed the back cover and checked the 500 mA PCB Fuse, this was not blown, checked the voltage at the input of power transformer at 240v but no output from the secondary at all, after removing the transformer and testing the primary winding it was reading open circuit. 4 lbs Please click on image for wiring diagram RoHS Compliant. Tweed Twin Low Power 5E8-A Output Transformer MOJO767 $99. Yes, the power transistors give up earlier than the transformer but if the transformer is too small right from the start you are calling for trouble. I just finished a build based on the 5F6 Fender Bassman schematic for this project and I have no sound. Remember that Fender dealers could order any of. transformers and inductors. Mark holes (Photo 35) for the transformer mounting screws and for the wire pass-through hole that will be grommeted. I've had good experience replacing output transformers on a few of my older ampsbut I've also occasionally discovered that "overkill" can sometimes be detrimental to the sound. Tube Guitar Amplifier - Output Transformers 1750 Series REPLACEMENT & UPGRADES Features Designed for drop in replacement of original units. All reproduction transformer are hand wound to the exact original specifications of winding geometry, steel laminations, materials, varnishes and of course sound. Dealer pricing available. It is important to note that in the mid-powered amps (2 6L6) there was a lower current supply (Vibrolux & Tremolux) and a higher current supply (Pro, Super, Vibroverb, etc. The transformers are wound for 1:1 unity gain and are designed for 600 ohm to 100kOhm impedance. Output transformers marked UPGRADE (below) allow for more versatility by added secondary connections that did not exist on the original units. Grand-Stack version with fatter Stack (1 inch) increases Punch und Bass! 2x 6V6GT to 4, 8 Ohms. "Start" and "finish" are arbitrary terms with respect to this configuration. Then you can measure it and fit your simulation models to actual measurements on the real transformer. Please make sure the amplifier transformer which you are replacing has a Fender number matching the equivalent Fender transformer number listed here. You were in there with a soldering iron doublecheck for cold joints. AA763 125P5D 125A7A 125C1A 022921. 02 In Stock. I plan to build a variety of cabinets to use with it, so I want the flexibility of a multi-tap OT. For the primaries of output tubes, this can be up to a couple of hundred volts, so don't think that you can relax your safety precautions - it can still kill you, even driven with 3VAC on the secondary of the output transformer. for Vox Various Output Transf. Four 12AX7/7025s, four 6L6s. This transformer is a large blocky metal device mounted on the chassis of a guitar amplifier. It is the same size as the larger Fender choke. Bring that old guitar or amplifier back up to working condition with these vintage parts & hardware. If it’s an output transformer, make sure the speaker is not connected and there is no minimum load resistor on the output jack or diode from plate to ground, as is found in some amps. I would seriously consider multiple output transformers. Output transformer for Fender Hot Rod amps. If you are looking for replacement transformers for Dynacos or Sunns, please click on "Dynaco Tube Amp Replacement Transformers". This protects primarily the output transformer from overcurrent, usually the result of an output tube short. Dealer pricing available. Evatco is the preferred supplier of Hammond's classic range drop in replacement for Guitar Amplifiers, so if you need a new transformer for Marshall, Fender or Vox (and more), then have a look on line for your amp. To understand the role of the stack, a trip back to Leo Fender’s world of the 1950s is in order. Mounting centers at 2" x 2. Thank you for looking. More Ohm, less output and cooler transformer. Now if it's a blackface amp, it's a safe bet that 6 means 1966. Transformers for Marshall Amplifiers. I've had good experience replacing output transformers on a few of my older ampsbut I've also occasionally discovered that "overkill" can sometimes be detrimental to the sound. Hammond 1750C - Output Transformer - 7K, 3. The ART Dual Transformer/Isolator Hum Eliminator uses a pair of high-performance transformers to totally separate input and output signal grounds, thereby isolating the 2 systems and reducing hum and ground-loop noise. Removed the back cover and checked the 500 mA PCB Fuse, this was not blown, checked the voltage at the input of power transformer at 240v but no output from the secondary at all, after removing the transformer and testing the primary winding it was reading open circuit. PLC Temperature Modules-OMRON K3FK-RS-45-5, 0-5V OUTPUT, 24V DC DC TRANSMITTER nvzyvq2697-best quality - www. Maybe you and the other students who are doing their bachelor's theses on the Fender Bassman, can pool your money to buy (an actual Bassman output transformer for USD 52. And then what about those early 90's Drake output transformers in the first JCM900 amps? Are they as well built as the 70's and 80's versions? Worse? I have an SL-X 50W amp that has a laydown Drake output transformer. The output transformer is the most closely related to the tone of the amplifier. Using two cabs you are squeezing out 100W which gives the amp the final. Black and Silver Faced Fenders use the same output scheme. Transformer winding is an extension of the fitting and turning industry. The amp's bass channel has the same circuit as a Blackface Bassman. Transformer Amplifier Tube Output Audio 1kg Oxygen-Free Z11 Single-Ended Copper Copper Single-Ended Z11 Transformer Audio 1kg Amplifier Oxygen-Free Output Tube. According to the 5Y3GT data sheet, a 42mA load causes the voltage to sag to 290V, as shown here where the red line crosses the 250V RMS curve. Fender literally wrote the book on electric basses, laying the foundation for musical innovation and evolution. For this particular reading, you'll need to change your test leads to the CURRENT input jacks, and select the 200 mA DC range. Mercury offers Transformer Restoration Services for rare and vintage transformers that are failing or underperforming. com - Fender Original Hot Rod Deluxe output transformer. Replacement transformers are not always identical, so if you get squeals or other odd sounds when hooking up a new output transformer, try reversing the output leads. I do however have an extremely high surplus of voltage on pin 3 of the output tubes and I'm not sure why. A new transformer will not change an amp's DNA or make a Marshall sound like a Vox. I have a tweed deluxe set that sounds. Transformer - Hammond, Guitar Amplifier, replacement for Fender | Antique Electronic Supply. It has been replaced by the Wattkins Universal PCB which is essentially the same PCB but with many added features. Replacement reverb driver for Deluxe Reverb, Pro Reverb, Super Reverb, and Twin Reverb. Output transformers marked UPGRADE (below) allow for more versatility by added secondary connections that did not exist on the original units. 00 Standard Mod + Output, Power & Choke Transformers = Platinum Mod™ Description/Specs: Includes Upgraded Voodoo-Designed™ VA-BJR-P Custom Power Transformer ; $169. Note that this transformer offers more power than the 1628SE. Would that indicate that it was made the 46th week of 1973? There is a faint blue ink stamp on the side of the chassis that reads "T-4". This code can be found on the power transformer, output transformer, choke, and reverb transformer. It came out of a 1972 Bandmaster Reverb Amp. Fender 099-4602-921 Stratocaster Neck 21-Fret Electric Guitar Neck With Maple Fretboard. Besides a 1962 Blonde Showman amp, this just may be the nicest bass amp that Fender has ever produced. Working with Fender and surf-rock pioneer Dick Dale, our 100W output transformers became an integral component in the world's first 100W guitar amplifier. Some designs sound better with a small output transformer. This amp proved to be the most popular of the Pawn Shop series, but Fender’s policy is to limit each model. Equivalent to #050438. Please contact us with any questions about upgrading your transformers and if you have an amp that you don't see represented here we can help find the right. Fender Bandmaster, Bandmaster Reverb, Pro, Pro Reverb, Tremolux, Vibrolux, Vibrolux Reverb, Vibroverb Output Transformer, 4/8/16 Ohm. The 59 Pro has the 8 ohm Triad 45217 output and the Triad 8087 power transformer. To understand the role of the stack, a trip back to Leo Fender’s world of the 1950s is in order. Although there is room for all three output jacks on the chassis I'm usually just asked for the 4 & 8 ohm. Output trannys contribute most of the distortion in a valve amp and have a limited bandwidth. Both channels enjoyed the same clarity and roundness, thanks to a hi-fi style power amp that can output full power at 40 Hz. Okay, I think I've done this correctly. I plan to build a variety of cabinets to use with it, so I want the flexibility of a multi-tap OT. it’s where I start finding a vintage OT for my project. Fender occasionally got them wrong, as some have reported 4-ohm transformers in Showman, and vice-versa. Working with Fender and surf-rock pioneer Dick Dale, our 100W output transformers became an integral component in the world's first 100W guitar amplifier. Designed for amps with a pair of EL84; 8k ohms primary, 8 and 16 ohm speaker outputs. When a second speaker is plugged in, the transformer's center-tap is selected, halving its output impedance to match the new, 4-ohm load. '59 Fender Bassman Tweed Output Transformer As a rough rule of thumb, the bigger the OT relative to the output tubes, the bolder a sound you can expect and the firmer the bass response. Best example is the MOSFET 100 Marshall. Is there a standard scheme for interstage coupling (such as phase inverter) transformer wire colors?. Wound on paper bobbin. 8 ohms, equivalent to #125A20B & #022921. component as expected from the tube output. 5 watts at 5% at 1 KHz. 2, 8, 16 Ohms. Here is the OT you need Fender Output Transformer, Champ, Tweed Princeton, Harvard, Bronco & Vibro-Champ, 125A35A & 022905, Single Ended Type, 4/8 Ohm They have custom wound PT and OT's for my RUDE MOODS but I have not put them in a build yet to test them out. The last item in the signal chain of the audio path of a push-pull type guitar amplifier is the output transformer. 95: 22848 ULT Bandmaster Style Ultra-Linear 30W Output Transformer 4/8 ohm - Also for jukebox, hi-fi, radio, stereo - MADE. As far as we know, there is standard color code for this. Best Prices on Fender Transformers, Power Transformer, Output Transformer, Call For Assistance Fender Power Transformer, Bullet 15 DSP, 0025413000 Submitted by gpadmin on Tue, 01/05/2016 - 22:20. They shared the same chassis and circuit as the tweed Super and tweed Bandmaster but with different output transformers of course. for Music Man Output Transf. or something is hitting the secondary through the feeback loop. Output trannys contribute most of the distortion in a valve amp and have a limited bandwidth. Transformer Bundle for the 6G15 Add-On Reverb Unit. Some blackface Fender amps use an 8-ohm, center-tapped transformer. GENUINE FENDER OUTPUT TRANSFORMER FOR VIBROLUX. Alternatively you could use a choke in the RF plate circuit and capacitively couple the signal from the transformer to the tube side of the choke. Fender hotrod Deluxe woes!! My fender Hot Rod's volume level never went past 3. I just finished a build based on the 5F6 Fender Bassman schematic for this project and I have no sound. G al l er y Fender (Output Transformers) Hammond Primary Secondary Amp Power Plastic Bobbin or Amplifier Equivalent To Part Number (Ohms) (Ohms) Typ (Watts) Paper Wound Coil? Model Names Manufacturer. Of the above, laminated soft iron core, windings and insulating material are the primary parts and are present in all transformers, whereas the rest can be seen only in transformers having a capacity of more than 100KVA. Not all distributors or resellers are alike! Many offer various other brands besides ClassicTone. And just because an output transformer costs a lot, doesn't mean it will sound great. Another example: a speaker code of 220820, in a Tweed era Fender amp (1950's - early 1960's), would be Jensen (220), manufactured in 1958 (8) in the 20th week (20) VINTAGE FENDER TRANSFORMER USAGE CHART. If the link below takes you to the schematic, please suggest what a suitable replacement would be and where to source it. Working with Fender and surf-rock pioneer Dick Dale, our 100W output transformers became an integral component in the world’s first 100W guitar amplifier. This actually requires opening the amp up and looking at the transformer. Now if it’s a blackface amp, it’s a safe bet that 6 means 1966. Output Transformer - 3. The most expensive part I installed in my amp was a replacement output transformer. Good for restoring older Fender Bandmaster, Vibrolux Reverb, Pro Reverb, Tremolux and other models. In 1967 (after CBS bought Fender), Fender bought a HUGE supply of pots from CTS. Items in Fender® Replacement Output Transformers Sort Item A-Z Item Z-A Item Name A-Z Item Name Z-A Price Low to Hi Price Hi to Low Items per page 40 80 120 50W/2 Ohm, 4 Ohm & 8 Ohm Fender® Replacement Output Transformer. Output transformer - Any way to find ohms with multimeter? I have an old tube amp and I'm not sure what the output transformer is pushing to the speaker. I would seriously consider multiple output transformers. or something is hitting the secondary through the feeback loop. TESTING OUTPUT TRANSFORMERS: It is not necessary to unwire the output transformer for this test, just pull the output tubes. Generally speaking the larger the output transformer the more low end and clean headroom (in the power stage) the amp will have. Includes: Power Transformer, Output Transformer, & Choke. My shop rate is $50/hr and I have a $100 minimum billing for chassis shipped in for repair. The transformer removes all harmonics above 10 and also alters the frequency response of the Fender Champ. Made in USA. To understand the role of the stack, a trip back to Leo Fender’s world of the 1950s is in order. And it's amazing. Both the stack and the windings will determine the performance of an output transformer. Western Electric - $1,750. (that's where the white wire is soldered that feeds the OT) On V4 I get 305 ohms. It is much beefier than the stock output transformer, but it is small enough to fit the stock holes. Custom made to original specs right here in the Home of the Blues, Sweet home ChicagoIllinois USA. Below is the color code that Bruce Heran uses for his valve audio projects. They are in pristine condition and have unstripped lead wires. Mercury Magnetics Vibrolux, Vibroverb, Tremolux, Pro Reverb, Bandmaster Output Transformer. Replacement reverb driver for Deluxe Reverb, Pro Reverb, Super Reverb, and Twin Reverb. Importantly output transformers have different primary impedances. Check the power output marked at. They have been sitting in my studio storage for about 10 years, and I have no idea what amp they came from, or which decade they were made. I'm looking for a good source of transformer codes. Fender Style, Musicmaster Bass, 15W Interstage Driver, 026847 40-18093 $44. Fender 0990752power. Demo to assist you with testing/troubleshooting output transformers. The same test can be applied to power transformers. 2 OHM, SE, 5W Please make sure the amplifier transformer which you are replacing has a Fender number matching the. The Pro Junior (& BJR) amps are relatively inexpensive to begin with, so spending a few hundred $$$ bringing them up to performance standard is easy enough to justify. It just has a hum balance pot and "output tubes matching" pot on the back. All of the transformers tested were pint sized compared to the Electra-Prints. The tried. This is a new 15 to 25 VA Push-Pull model OT20PP Output transformer for tube guitar circuit applications (50Hz to 10KHz) using power tube pairs such as EL84 or 6V6. The idea is to test for shorts that occur as a result of arcing between the leads and the winding wires in the transformer. Bring that old guitar or amplifier back up to working condition with these vintage parts & hardware. The Bandmasters, like most of the classic Fender amp models have existed for decades, and have went through several metamorphoses in their lengthy lifespan. Western Electric - $1,750. com - View our excellent collection of Fender Transformers. The keys to creating the bigger, stronger, and louder amp required lay primarily in two major ingredients; a new output transformer (OT) and a new speaker cab design. 5VAC 40VA: Isolation Transformers - Amazon. and, I noticed I never saw the back side of champ chassis before. The ART Dual Transformer/Isolator Hum Eliminator uses a pair of high-performance transformers to totally separate input and output signal grounds, thereby isolating the 2 systems and reducing hum and ground-loop noise. I might be talking through my ass but for hum to come out the speaker it means something is hitting the primary on the output transformer. 80 results for fender transformer Save fender transformer to get e-mail alerts and updates on your eBay Feed. Most Fender push-pull amplifier designs use negative feedback, tapped from the output transformer speaker winding to enable more headroom before power stage distortion starts. For the primaries of output tubes, this can be up to a couple of hundred volts, so don't think that you can relax your safety precautions - it can still kill you, even driven with 3VAC on the secondary of the output transformer. Fender®Blues Junior®8EB2C1B TL072 1 3 2 4 8 +-+ 22 µ 47-15V +15V 4. What is Negative Feedback? General. Output transformers for Fender, Marshall, VOX Show 1 to 12 (of in total VOX® Output Transformer AC50CPH / AC50CP2 / AC30HH / AC30H2L / A. TAG boards provide an easy alternative to terminating impedances when multiple options are available on one transformer. Output Transformer. We started talking guitar amps, and he told me of a output transformer he designed for a Fender Bassman.