If you have not been trained to work with high voltage then have an amp technician service your amp. Ive been after one of these for a while, as i have an old tube works mosvalve halfstack amplifier purchased in 92 with the real tube rackmount preamp built in. Some used 4knob tube drivers marked chandler are not the original design by bk butler. Featuring a diehard metal chassis, intuitive control interface, and highlow eq control, the tube works tube driver overdrive captures magic in a box. The gm70 tube the gm70 is a russianmade dht, originally used as a modulator in military am transmitters. Valve amplifiers can be used for applications such as guitar amplifiers, satellite transponders such as. The circuit is biased into classa, ultralinear operation. Does anybody know anything about the tube works bass amps. Low to medium power valve amplifiers for frequencies below the microwaves were largely replaced by solid state amplifiers in the 1960s and 1970s. New listing audio research ls2 stereo tube pre tube amplifier amp working rare dhl. It has an effect sendreceive and a footswitch for switching between the channels and turning onoff the reverb. Fender rca 2button vintage vibratoreverb amplifier amp footswitch 099405. I personally autograph each tube driver on the bottoms side. To the personpersons responsible for developing, creating, and offering this excellent amplifier to the market, thank you for the professional hand craftsmanship you.
Able to organically create the tone of a tube amp at the point of breakup, the tube driver has been loved by guitarists since its inception decades ago for that allnatural tone and feel. Exploring drive and stack controls on the tube works rt 2100 duration. Whatever the driver tubes give to the output tubes, then that is what youll get out to the speaker. Peavey, legend, music man and others were doing the hybrid thing long before the tube driver.
Here were going to take a look at the inner workings of standard amplifier circuitsthe tubes, transformers, resistors, and capacitors that work together to create the amazing. Since the design is no longer licensed to tube works or theyre no longer making it, the devices have become sought after guitar pedals. Heart of the tube driver is a real handselected 12ax7 tube by bk butler himself. Tube driver original by bk butler with bias control.
Pedals with separate ac power supplies or wall warts are not original and do not sound the same. View and download tube works td742 owners manual online. Used tube works tube driver td742 combo amp tube works. Blackstar unity u500 unity series 500w bass combo amp blackstar. I searched their site and all over the internet, i cannt find anything about this particular amp. Unfollow tube works amplifiers to stop getting updates on your ebay feed.
The tube works real tube distortion overdrive pedal is near legendary, probably because eric johnson, billy gibbons, and joe satriani are known for using it. In the picture below, is probably about as simple a onetube. Does changing the driver tube affect the sound of the amplifier dramatically. A guitar amplifier or amp is an electronic device or system that strengthens the weak electrical. For the bias control my favorite settings are maximum for gilmour tones and 10 notches below maximum for my original tones, which is roughly 2. Hi andrea, i have the bk butler tube driver with bias mod as well, i use a nos yugo real tube tho 12ax7.
Im hand building only limited production numbers every week. Fender super champ x2 15watt 1x10 tube combo amp lacquered tweed. A few years of research and prototyping went into it, but the result is worth it this is a superb amplifier, one of the best i have ever heard. How tubes work rob robinettes car and tube amp website. Tube works td752 celebrating with a lowcarb bourbon drink, and reposting the essence of a private thread i posted earlier to my friend debbie down in florida.
Bk butler tubedriver tubeworks amp demo tube screamer. I even built a copy of one of the best selling low cost parafeed amplifier kits for reference the one with a single 6dn7 per channel. The jbaa tube amplifiers can use a 12ax7, 12au7, ecc82, ecc83, 5751, 12sl7, 6sl7 in the driver position and 6v6, 6aq5, 6005, 6y6g, el84, 6bq5, 6f5p, 6p15peb, 6y6ga, 6k6, 6w6, 6gv8, 6bm8, ecl82, ecl85 output tubes. To make an amplifier, a large positive voltage several hundred volts is applied to the plate through some sort of load. Since the design is no longer licensed to tube works or theyre no longer making it, the. I had negotiated with a deb to purchase a tube works guitar amplifier from her and her hubby, and it just arrived this afternoon. Due to the continuing requests for my limited production original design tube driver pedal, here are the details. This tube works very well for players seeking a cleaner tone in the lower settings of the drive control.
Tubeworks is based on the coast of maine and designs innovative products for energy efficiency and comfort, employing maine artists, technology experts, and skilled fabricators. A tube amplifier chassis contains lethal high voltage even when unpluggedsometimes over 700 volts ac and 500 volts dc. The number of electrons emitted from the heated material per unit area is related to the absolute temperature as well as a constant b that is a constant indicating the work an electron has to do to. The mv962 has no effects loop, thus guitarboss gt6mv9624x12 cabinet i get tube nazis asking me what im using on the combo amp, i use the effects loop, make one change on my gt6. The 5842 driver tube has become hard to find and expensive. I designed the power drive board for use with the 845 tube. A constant current source ic 10m45 is the load for the driver tube, and an fet source follower is the current amplifier replacing the cathode follower. The fet can operate at a bias current of 20 to 100ma much more than a vacuum tube cathode follower which insures a low driving impedance for the output tube. Also, in some cases, the driver tubes are providing alot of the gain in the amp. The rig was a tube works bass amp and genz benz gb410txb2 cabinet. It went into the 845se amplifier and performed flawlessly for over a year. Located in riverside, california we design, manufacture and assemble all of our tubeworks raceline and drivetrain products inhouse. It has an effect sendreceive and a footswitch for switching between.
David gilmour of pink floyd was seen using two 1980s tube drivers in the studio and on tour in. Butler built tube driver td752 100w 1x12 combo for sale. I had a custom transformer built for an 833a amplifier project. Would changing these from the stock tubes to a better quality tube make a difference. Vintage tube works tube driver td752 combo w carpet cool 12. Tube works was butlers company, anyway, so this pedal is his product. The tube driver is designed for bigger tube amps so if youare mostly.
In looking at how a vacuum tube works it is also necessary to consider the effectiveness of the way in which electrons escape from the surface. Butler started making the 4 knob tube drivers again as a production model under the tube works brand around 199394. Blackstar ht5 mkii 5w tube 2 channel 1x12 combo amplifier with reverb blackstar. A valve amplifier or tube amplifier is a type of electronic amplifier that uses vacuum tubes to increase the amplitude or power of a signal. It was black and in yellow writing on the front had tube works and 300 watts written on. View and download tube works td752 owners manual online.
Compatible with all electric guitars and amplifiers. In the champ amp tube v1a is the first preamp and v1b functions as the output stage driver. What other items do customers buy after viewing this item. Never touch the amplifier chassis with one hand while probing with the other hand because a lethal shock can run between your arms through your heart. The tube driver td752 is a two channel 100 watt amp with spring reverb. Those who want to reserve a unit, please contact me via email.
A relatively small amount of change in the grid voltage causes a much bigger change in the voltage across the load. I have a tube works mv962 rack mount, which is a pure clean power amp, and as well, i have their rt2100 2x12 combo amp. If you need help outside of those hours, please leave a message via voicemail or email and. Looks like this unit works with bipolar low voltage supply as the tube driver that were constructed after this line of pedals. To insure proper installation we offer tech support monday thursday from 85pm. Tube works guitar combo amplifiers 3 products audiofanzine. In typical power amplifiers the preamp tubes can easily last. If the driver tubes arent getting it, then the output tubes wont either.
Tube works is based on the coast of maine and designs innovative products for energy efficiency and comfort, employing maine artists, technology experts, and skilled fabricators. Comes with owners manual the tube driver td752 is a two channel 100 watt amp with spring reverb. Bruce heran outlines the design and construction of a high fidelity tube junk box audio amplifier jbaa. Well they will under the right conditionslike inside a vacuum tube.
Something caught my eye a listing for a tube driver td742 combo amp, which i didnt even know existed. Fender 2330300000 champion 40 40watt guitar combo amplifier, floor model. Feb 27, 2018 the tube works real tube distortion overdrive pedal is near legendary, probably because eric johnson, billy gibbons, and joe satriani are known for using it. Td742 tube driver combo amp tube works a 60w combo amp version of the tube driver with 12 eminence speaker. I have a 300b set amp the uses 12au7 tubes as the driver. The power amplifier produces a high current signal to drive a loudspeaker and produce sound. The real tube includes a mid range knob, allowing for a wider range of tones to be dialed in.