I was wondering if there is any reason to try LED biasing of a 6j5 in a SE amp where this tube is the driver for a 6550? I am using a 1w resistor now. If i put the LED in how do i set it up other than just replacing the resistor? I know different LED colors correspond to ...
for those who want to know the headphones are 55ohm Akg K240's and the tubes are 6550s with preamp tubes to be decided. Apart from blowing the output transformer by running the amp into an open circuit, valve amps are pretty rugged. One thing to take special care with is the output ...
Commonly assigned U.S. patent application Ser. No. 752,311 to Furbee et al. entitled "X-Ray Tube Electron Beam Switching and Biasing Method and Apparatus", now U.S. Pat. No. 4,685,118, discloses certain manufacturing measures that can be taken to reduce the occurrence of X-ray tube ...
After this operation, the pressurized fluid is discharged from the lock member on the rear side and from the elastic contraction member to elastically restore the elastic contraction member to the original shape with the aid of the biasing force of the spring member, thus moving the attaching me...
The unit has answered my questions about the biasing of 6AU6As and allowed me to adjust my amplifier design to take old tubes into account. Simply put they conduct more poorly as they age. Obviously the unit could be enhanced with more bells and whistles. It would be good to have a digi...
The Tube Amp Book This month, Paul White checks out the 4th edition of Aspen Pitman's (Groove Tubes) popular Tube Amp Book. Accessories / Gadgets ByPaul White PublishedApril 1994 Aspen Pitman is best known as the founder of Groove Tubes, well‑known purveyors of valves to the music ...
A pinch tube proportioning valve includes support structure defining an elongated valve cavity having a longitudinal axis and a pair of spaced resilient valve tubes disposed in the cavity and respectively providing communication between two fluid supply conduits and a fluid outlet. A control cam cartrid...
While adjusting the Bias control pot of your amp, the Bias Master™ shows the actual result. This lets you set and evaluate the full reasonable biasing range your amp and tubes offer to find and set your personal perfect choice. The Bias setting has a dramatic impact on the amp's ...
Such a set of tubes was called a "line up", a term still in use today for e.g. a set of transistors that will make an RF power amplifier. The same system was adopted for televisions. As explained, a consequence was that the whole cassis of the set was inevitably connected to the ...