![]() ![]() ![]() Now, play the amp as-is, and sort out any errors you made to this point. Looking at the back of the pot, with the lugs pointing up, the left lug gets grounded, the middle lug goes to pin 7, and the right lug connects to C3 where R5 did before. Replace it with a 1M audio pot (your new volume control). Find R5 (1M) between C3 and pin 7 of the preamp tube. You can add a grid stopper, if you want, from the non-grounded end of the 1M resistor to pin 2 of the preamp tube (now ECC83/12AX7).ģ. Plate and cathode resistor values are close-enough for now, so leave them until after you taste-test.Ģ. The Champ plan would be to swap an ECC83/12AX7 in place of the ECC82. The schematic shows a Volume control, then ECC82/12AU7 gain stage, then second ECC82/12AU7 gain stage, then 6AQ5.ġ. What kinds of components would i need to get these tubes to start playing the game amplifier i have intentions on using this amp with modern audio scorce components so the typical RCA audio jacks and a 3.And, bad from a signal-to-noise standpoint. 6 A from input 117 volts im assuming that was for the heaters in the tubes Now correct me if im wrong as im no expert in electronics though i do like tinkering i can basically understand scematics (very basic lol) tubes to build a stareo amplifier i dont need any crazy power output or anything one of these tubes info says its capeable of 10 watt output according to my friend these tubes are good im not familiar with transformers ive got one transformer from a tube radio that outputs 6.3 volt at. Im planning a vacume tube amplifier build (thanks to recieving some tubes from a friend) ive found out that there are a cupple tubes that could be of use in such a project these are as fallowsĦAQ5 (this tube is an 6AQ5A and according to what ive read is used as the output tube in an amp)ĦAQ8 (dual triode used as the first stage tube in an amp) ![]()
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