2013年11月23日 · 814 SE Amplifier Circuit. The amplifier circuit is exactly the same as the one I used for the 4-65a. The driver is an onerous implementation of the 46 (triode-strapped) in …

2014年11月16日 · Having tested the 814 in triode mode, I will proceed now to upgrade my 4-65a SE amplifier and replace output valve for the 814. To ensure it can withstand the 540V in the …

2014年11月16日 · Improving the 814 SE Amplifier. After more than a year listening to this fantastic amplifier, it was time to do the first significant improvement to it despite I resisted to …

2021年4月7日 · The 814 pentode in triode mode has approx. 2K plate resistance and 4 mA/V mutual conductance. Run at 400V/45-50mA with 5K transformer you should get 4W easy in …

If you remember, I implemented the 46 with filament bias (yes crazy I know) to drive the 814 SE amplifier. Sounded amazing and I think alongside the 45, is one of my preferred DHTs. I have …

2022年4月13日 · Maybe look around at others that have built 814 SE amplifiers. A few exist. Fairly straightforward once you have chosen an operating point and have an appropriate …

2014年5月5日 · The 814 is extremely linear at low grid voltages (providing it has an optimal driver for A2 grid current) whereas pushing it harder at higher voltages will increase the distortion as …

2011年1月23日 · The Sedona is the reference amp for the Taylor shop. To get the most out of your ES system, consider an amp that accepts a TRS signal. There's a couple of solid state …

814 Philips : military power pentode (triode connected). 814 was designed and used in military radios, power lasers. It’s equipped with tungsten thoriated cathode (it glows like an …

2003年11月2日 · GM70's are a great sort-of-845 class tube, but there is the issue of non-availability of sockets. Because the 813T and GM70 have higher mu, you need less drive …