Soundtrack 813 amplifier. The first coil is 3" diameter coil with 0.

Soundtrack 813 amplifier. with taps for the following bands: Jul 22, 2017 · The only schematic I would build that's mentioned in this thread is Pete's triode wired 813 amp, and the output transformers are labeled with the manufacturer and part number on that PDF. This is known as a "bifilar tuned input". This amplifier without modifications will allow to use the GM70 and the 813 (FU-13) output tubes. Before I even begin, I appreciate all of the help from those on the board who have 'been there, done that', and have helped me though my design phase. Compare, download or buy optional music streaming hardware and Soundtrack apps for remote control, accessibility and more ways to play across connected devices. The first coil is 3" diameter coil with 0. First of all, be VERY careful with a high-voltage, low-impedance power supply like this. This is the dual 813 grounded grid linear amplifier that was built to mate up with the Octal Tribander. Price looks good & might be gd for tweaking or modification in future. Jul 2, 2007 · I have begun my 813 SE mono-block project, and I figured I would start a thread to regularly update as I progress. Your thoughts pls This solution has maximized the powerful and smooth sound quality of the 813 tube, and has also resulted in better sound spectrum control, especially when it comes to bass response. The 813 is a general-purpose transmitting beam power tube with thoriated-tungsten filament with a maximum plate dissipation of 125 watts. The notes from first listening to a virgin Audioromy 813: It is loud (not powerful but loud) meaning it is very sensitive and the whole usable range of the pot is 1 hour. . Sep 16, 2025 · We will explore the classic rivalry between the 211 and 845 triodes, and contrast them with the rugged, high-power 813 beam tetrode and the high-gain 811A triode. So, you wanna build an 813 SE amp some words of wisdom? As in all projects, I learned a few things building this amp that I should share with any potential builders out there. Subtle things can bite you. L1 is actually two coils in series. Jan 13, 2022 · Hi Guys Wondering if someone has experience on the above amp. A Word of Warning: Amplifiers using these tubes operate with lethal voltages, often exceeding 900-1250 volts. As you can see, this is a typical 813 amplifier schematic with the exception of the input circuit. More details of this part of the circuit are found on the 813 Input Circuit page. 25" spacing. It is the identical physical size and shares the same mechanical construction techniques for the cabinets, panel labeling and meter faces. x2tn t4s v2tgy 7amizl vmx ccn qzu07qx jv25y tch kq