Tag Archives: Amplifier

Teleste AC2000, teardown of a 862 MHz cable TV amplifier

This Teleste AC2000 is a cable TV amplifier that is configurable through different insert jumpers for setting up attenuation/equalization, diplex filters, return amplifier or a transponder making it remote controllable.  This is a dual 39 dB amplifier in the range … Continue reading

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Astro HVO-Vario G 38, teardown of a 862 MHz cable TV amplifier

These are highly modular cable TV amplifiers, they are set up by using a wide range of different insert cards with different frequency ranges or options. These are 38 dB amplifiers in the range from 47 to 862 MHz. This … Continue reading

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100 Watt 6P45S amplifier update #2

The latest update to the 100 Watt 6P45S tube amplifier is about a lot of testing and fault finding have gone into the tube amplifier to correct noise and hum issues. It is now in a state where the audio amplifier itself … Continue reading

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100 Watt 6P45S amplifier update

The latest update to the 100 Watt 6P45S tube amplifier is about the new printed circuit boards, installation in the enclosure and a simple signal generator test.

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100 Watt output from 6P45S tube amplifier

The latest update to the 100 Watt 6P45S tube amplifier is the measurements of frequency response from square waves and bandwidth measurements. The prototype is now considered done as it has proved itself capable of outputting 210 Watt peak before … Continue reading

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50W 6P45S monoblock tube amplifier

Introduction The main reason for building a new set of amplifiers came with purchasing a set of old studio monitors, the legendary JBL 4333. These 75 Watt speakers with 15″ bass drivers needed a amplifier that could deliver some more … Continue reading

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2x30W EL34 tube amplifier

Introduction Ever since building the 2W single ended tube amplifier, I wanted to build something better, something that is considered a good amplifier among tube amplifier enthusiast. It is in no way cheap to build a tube amplifier, so this … Continue reading

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2W UCL82 SE tube amplifier

Introduction I got a very old TV from a colleague, it had been stored in his parents attic for almost 30 years. It was huge and ruined from the time it was stored, so he only brought me the electronics … Continue reading

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