2 watt push pull diy 12ax7 6aq5 tube amp

#2 watt push pull diy 12ax7 6aq5 tube amp driver

The last matching criteria is by date codes. Any pair or quad described as matched means that the tubes will have the same exact construction and will test within a close range of each other for Mutual Transconductance. Shorts, leaks, gas and noise on one of our calibrated Hickok TV-7 tube testers. more service! All tubes have been tested for mutual transconductance. Tested& Guaranteed Vacuum Tubes All tubes are guaranteed to be 100% as described or your money back. WE WILL REFUND YOU THE DIFFERENCE! One Day or LESS Handling Time Domestic& International buy WE COMBINE SHIPPING- EVEN IF YOU ACCIDENTLY OVER-PAY FOR SHIPPING. We mainly use the Hickok TV-7D/U, but occasionally we may use a Hickok 539, 533A, or 600A. And every single one of them has been calibrated within the last year by industry experts. If a tube is listed as'tests NOS' but is listed as'not True NOS' please expect the tube to have a small amount of use* All tubes have been tested using only the best tube testers. A truly NOS tube will have excellent getter flashing condition, no dirt/grime, usually in the original box, and no filament deposits. Many tubes will test NOS but will actually have a few hours of use on them. In some cases, the brand will be determined by the tube's construction* General Mutual Transconductance(Gm) Test Results: 76& 78 Where the Minimum is: 46 and the NOS value is: 75 or 100+% of what a NOS tube should test where the Minimum'good' value is 65% Tests NOS? Yes True NOS? Yes* Please note. The actual brand was determined by the EIA codes printed on the tube. This is because many manufacturers made tubes for each other and also printed various amplifier and radio brand names on tubes destined for those companies. ONE NOT Original Notes: If the actual brand does not match the printed brand. Tube Type/ Number: 6AQ5A Actual Brand* Sylvania Printed Brand: Sylvania Quantity of Tubes: Matched Pair Plate Construction: Black Smooth Getter Construction: Top O Country of Manufacture: USA Visible Date Codes: 535 JCP C& 618 JWU C Lettering Condition: 90 Percent Year Made: Mica Spacers: 2 Smoked Glass? No Engraved Base? No Boxes Included? 2 Boxes- ONE Original. more and avoid hassle! to view our inventory of thousands of tubes.

Shorts, leaks, gas and noise on one of our calibrated Hickok TV-7 D/U tube testers. Power output is about 10 watts per channel.100% Guaranteed Tubes. The amplifier really sounds wonderful with nice detail and plenty of bass response.

#2 watt push pull diy 12ax7 6aq5 tube amp driver

The driver tubes are Tung-Sol 6SL7GT and the output tubes are Electro-Harmonix 6V6GT. The 10 watt resistors run a little to hot for my taste.Д¦SL7 driver / Push-Pull (PP) 6V6 / 6V6GT Tube Amplifier Schematic I am planning to replace the 100 ohm, 10 watt power supply resistors with 20 watt resistors. For more information about tube power supply design, see Matt's informative article Power Supply Design for Vacuum Tube Amplifiers. It became necessary to put a 100 ohm resistor before the first power supply capacitor to bring down the B+ to about 325 volts as I was getting in excess of 345 volts (there is less voltage drop through a GZ34 versus a 5Y3). A 5Y3 rectifier would have been too small for a stereo amp so a JJ GZ34 rectifier was used. Instead of Dynaco transformers, Hammond 1608A audio output transformers and a Hammond 272HX power transformer were used. There are a few minor deviations from the original schematics.

This 6V6 amp was built following the push-pull (PP) EL84 / 6V6 Dynaco A-410 output transformer schematic. DIY Push-Pull (PP) 6V6 / 6V6GT Tube Amplifier with Hammond Transformers DIY Push-Pull (PP) 6V6 / 6V6GT Tube Amplifier Schematic