se

Manifesto SE ... a single ended tube amplifier project by HB. The physical layout is breadboard-minded, with exposed signal circuits connected to the power supply via umbilical connectors. The power supply is a LOW DCR "flywheel" type with 250VA Hammond ICT as the main B+ transformer. The...

Greetings, I've recently serviced a Sylvania console chassis for educational purposes as I've not wrenched on a stereo single ended amplifier like this one before. (And I cannot say no to adopting an ugly amp that is getting no love.) With no markings, I had to draw out a schematic to make...

Penncrest AM/FM Phono console. The chassis was stripped and rebuilt as a SE tube stereo amplifier. SE 50C5 beam power mode finals driven by a cap coupled 5751 twin triode. SS diode rectified SS voltage doubler power supply with filter choke. Tuned the loop FBK network to improve square wave...

This SE tube amplifier project is currently a work-in-process. The PT came from a Westinghouse phono console that supported (2) 6V6, a few 12AX7's and a 5Y3 rectifier. On order are (2) NOS AES PT-31 SE 5K/8 OPT's. No final decision has been made regarding the signal circuit on this project...

SE 6AQ5 with AES PT-31 OPT. The OPT's are older units, not the current production. 5751 driving stage. There were some issues regarding load dependent stability while figuring out the feedback circuit. Grid stop resistors and Zobel network across OPT resolved the stability problems. RT...

Happy new year everyone! I've been really busy but have wanted to build the Kegger se kt88 for awhile now and after seeing blueglows youtube videos I'm sold. I enjoy my 5 watt se builds but have a party coming up this spring and need more power so am ready to get started but have a few...

300B 10Y SE amp with 83 rectifier tube

My first DIY! Made over the course of several months, with lots of advice and counsel from good AK folks. Highlights are Riken resistors and James Audio transformers. Member ejfud made the base for me of curly maple and curly cherry. http://www.audiokarma.org/forums/showthread.php?t=118799...

Here's my amp underdecks. Highlights are Riken resistors and James Audio transformers.

I pulled this out of an Olson console. Added a power switch, fuse assembly, volume pot, jewel light, and new power cord. EZ81 rectifier, 12AX7 driver, and EL84/6BQ5 power tubes. Pretty amazing sound from an amp smaller than a shoebox!