CJ Well-known member Joined Jun 3, 2004 Messages 16,120 Location California Jan 5, 2018 #1 one of these> Attachments fr.jpg 78.4 KB
CJ Well-known member Joined Jun 3, 2004 Messages 16,120 Location California Jan 5, 2018 #2 Hi Watt 4k OPT, big choke, 4 EL84's from Germany, Mullard GZ34, Brimar 12AX7a, good stuff, some folks DIY these amps, some buy them fro Ceriatone> http://www.ceriatone.com/products/ notice the warning label> Attachments d1.jpg 113.6 KB
Hi Watt 4k OPT, big choke, 4 EL84's from Germany, Mullard GZ34, Brimar 12AX7a, good stuff, some folks DIY these amps, some buy them fro Ceriatone> http://www.ceriatone.com/products/ notice the warning label>
CJ Well-known member Joined Jun 3, 2004 Messages 16,120 Location California Jan 5, 2018 #3 couldn't read label? me neither. Rainier Beer? Attachments d5.jpg 142.3 KB
CJ Well-known member Joined Jun 3, 2004 Messages 16,120 Location California Jan 5, 2018 #4 teflon wire, gold plated resistors, and some crusty preamp sockets that messed up everything, so we fixed that, Attachments d2.jpg 112.2 KB
teflon wire, gold plated resistors, and some crusty preamp sockets that messed up everything, so we fixed that,
CJ Well-known member Joined Jun 3, 2004 Messages 16,120 Location California Jan 5, 2018 #5 schematic with voltages, changed some values on V2 , bias resistor and cathode load to get that Marshall compression, the rounded waveform on the bottom of a sine from grid current, Attachments 36wTMB.gif 94.6 KB
schematic with voltages, changed some values on V2 , bias resistor and cathode load to get that Marshall compression, the rounded waveform on the bottom of a sine from grid current,
CJ Well-known member Joined Jun 3, 2004 Messages 16,120 Location California Jan 5, 2018 #6 PEC pots, Attachments d7.jpg 188.5 KB
CJ Well-known member Joined Jun 3, 2004 Messages 16,120 Location California Jan 5, 2018 #7 sq wave response on spk output, dummy R load, Attachments d11.jpg 165.1 KB
CJ Well-known member Joined Jun 3, 2004 Messages 16,120 Location California Jan 5, 2018 #8 waveform on V2 cathode output before and after resistor changes> Attachments d11.jpg 130.8 KB
