2018年4月6日 · Usually I use EL84 in all my amps. Because of that I asked about EL84. From many months I tried to find good schematic to my purpose and to this time I don't find ready to applying schematic. Every time when I see some schematic It means that I need change it to my purpose. Now I work with amp (this time to the quitar) and I need change many ...

2019年7月12日 · From the tube charts: At 360 Plate volts a pair of 6V6s in PP needs -22.5 fixed bias volts, or +22.5 cathode bias volts. @ 250 Plate volts, an SE EL84 needs 7.5V bias. You can plagiarize the cathode bias voltage from a known SE EL84 amp @ your plate voltage; and feed signal voltage accordingly.

2014年1月19日 · I had built a SE EL84 and switched out to a 6V6 after not liking the distorted sound. It did sound much better with the 6V6. But I may have had other variables with mine all I had was a volume knob and to distort you had to crank it up to 7-10 on the vol knob. I also had tube rectification not ss.

2019年7月30日 · Re: Second design - SE EL84, cascode pre « Reply #83 on: August 27, 2019, 04:06:45 pm » I "test" my PSU at the 1st tap virtually every time, I've got a bunch of 2K N 5K 50W'rs

2016年2月23日 · Hello all, Building a weird little single ended special, with two EL84's in a parallel SE configuration, and wondering the what-if's about pushing the plate voltage(s) to about 350 or so..The Fender blues junior runs them in PP at 347, but I'm not sure if the tube(s) can take a little extra "shove" in an SE fashion...My transformer no load secondary comes in at 311 RMS, and I was planning on ...

2017年9月15日 · Hoffman Amplifiers Tube Amp Forum, EL84 SE BIAS. I have the el84's biased hot in my Orange amp with a 120 ohm resistor.

2018年6月23日 · I use Marshall 18w PT and OT -8K for most 18w EL84 builds For 6v6 I tend to use around 6k or 7k OT but prefer beefier transformers then what Fender Deluxe use. Use a 35w OT like Bandmaster type or custom. Heck JTM45 with KT66 used 6k6 OT. Trainwreck Express with pair of EL34's or 6V6-rebias used 6k6 OT but rated at 300mA.

2012年7月15日 · I built a SE using a paralleled 12AT7 (changed from ax7 for less distortion) into 5879 pentode feeding a 6v6. With a little lower voltage, an EL84 should sound really good as well. It's got a nice smooth sound at low volume and plenty of growl and volume when you crank it.

2017年1月7日 · For all around the RCA "pan getter" have some warmth and all I have ever used bias up readily using 125 to 130 ohm. One thing I always build into a EL84 amp is a cut control to trim the highs and therefore that harsh, raspy deal. I have never built a EL84 SE amp tho, but I would think you could get a single unmatched Amperex and RCA fairly cheap.

2024年8月29日 · OT_tr SE EL84 from BH5H PWR_tr capable of at least four tubes. Supposedly 5th heater would overload? Hammond 4H high-R coil Selection of tubes Stuff'n'sh*t Power amp Power amp section is a shameless copy of a Blackheart, for obvious reason, the OT_tr. And BH5H has a pentode / triode switch!