Butronic dating video
He mounted the circuit in a Radio Shack enclosure and let a few local guitarists try it out.The positive response led Butler to further reduce and simplify the circuit, making an early version of his Tube Driver pedal for friends around 1975.A composition as claimed in Claim 1 in which the drug is a B-blocker, antimicrobial agent, anti-inflammatory agent, non-steroidal anti-inflammatory agent, antihypertensive agent, sex hormone, muscle relaxant, antiasthma agent, antiemetic agent, antidepressant, diuretic, vasodilator or antiparasitic agent and the surfactant is a polysorbate, a polyoxyethylene polyol, sodium lauryl sulphate, sodium desoxycholate, a sorbitan, a polyoxyalkylated isostearyl alcohol, a polyoxyethylene alkyl ether, a polyoxyethylene polyol fatty acid ester, a polyoxyethylene fatty glyceride, a cocoamido alkyl betaine, a dioctyl sodium sulphosuccinate, an ethoxylated tallowate, a C-cetyl or C-decyl betaine, stearyl dimethyl benzyl ammonium chloride or an ether amine salt.3.A composition as claimed in Claim 2 in which the drug is timolol, propanolol, bupranolol, cefoxitin, erythromycin, lincomycin, hydrocortisone, betamethasone, prednisolone, indomethacin, sulindac, diflunisal, methyldopa, clonidine, estrogen, androgen, progestin, cyclobenzaprine, baclofen, diazepan, theophyline, dyphyline, pipamazine, chlorpromazine, protriptyline, amitriptyline, aldactone, diuril, hydrochlorothiazide, ivermectin, thiabendazole, avermectin, abamectin, nitroglycerin or papaverine, and the surfactant is polysorbate 80, a polyoxyethylene polyol, sodium lauryl sulphate or sodium desoxycholate.4.Rather than cut bass or treble, both are flat at the zero knob position and boost those frequencies as they are dialed up.The phase is inverted at the output where the signal hangs with a high impedance load.The process as claimed in Claim 8 including the further step of dissolving the solution obtained in an aqueous or aqueous alkanolic solvent and evaporating to a dry product at a temperature in the range -30°C to 60°C.
This was before Butler was actually marking pedals with his own name, so those first Tube Drivers were marked TUBE DRIVER™ and CHANDLER ELECTRONICS-PATENT PEND on the front, with LEDs placed above the the screen printed text.
The standard negative voltage grid bias along with a negative 12 volts applied to the cathodes helps the tube exaggerate the op-amp distortion in a unique way.
A Fender-style passive tone circuit follows, with bass and treble controls.
In 1986, when he was still working for Dean Markely, Butler updated his tube overdrive design and added midrange knob.
By 1987 he had resigned from Dean Markley and founded the Tube Works brand in Denver, Colorado.
He later changed the name to Mini Matrix after getting a cease and desist from Mesa Engineering, who owned the name Mesa Boogie.