Hi guys.
I have been off the forum for a couple of months in order to finalize some of the projects I had been drawn into. Here I will present the latest one. This is the last stop before insanity. You will realize immediately afterwards.
This amplifier is an order of one of my dearest friends. It is a two-stage design, transformer coupled of course (what else could it ever be?). This project is the last stop before the end of the road, hope to have it totally finished by end of July 2016, complete with chassis. The next project (along with the most crazy phono preamplifier ever built) will be the final before my relocation and will possess all my knowledge of building crazy amplifiers, for the most demanding audio aficionados. I really feel proud of the fact than one of my dearest friends has proposed me to build a dream power amplifier for him, where cost is of course out of question.
The characteristics of the amp are the following:
More pictures are about to come shortly!
I have been off the forum for a couple of months in order to finalize some of the projects I had been drawn into. Here I will present the latest one. This is the last stop before insanity. You will realize immediately afterwards.
This amplifier is an order of one of my dearest friends. It is a two-stage design, transformer coupled of course (what else could it ever be?). This project is the last stop before the end of the road, hope to have it totally finished by end of July 2016, complete with chassis. The next project (along with the most crazy phono preamplifier ever built) will be the final before my relocation and will possess all my knowledge of building crazy amplifiers, for the most demanding audio aficionados. I really feel proud of the fact than one of my dearest friends has proposed me to build a dream power amplifier for him, where cost is of course out of question.
The characteristics of the amp are the following:
- Two active stages only
- Directly Heated Triodes throughout
- Last stage built around 4C22 transmitter tube (it belongs to the team of very high impedance tubes, with an Rp reaching 5.5kOhms - my favorite tubes!)
- Zero feedback design, with Output Transformer rating 22kOhms (!)
- First (Input) stage built with Emission Labs 30A, anode driven, with a huge Interstage Transformer that can provide more than 68kOhms of loading conditions and unbelievable load linearity in the frequency domain
- Both signal transformer cores are manufactured of the most exotic ferromagnetic alloy (proprietary design and manufacture as well!)
- Double pi filter for HV of each tube
- Oil capacitors throughout for HV of both tubes with very high capacitance
- Mercury vapor rectifier tubes for the High Voltage supplies, with capacitor input filter, using 10 uF capacitors (do not even think of trying this, you will burn the tubes instantly)
- Pi filter for the filaments
- Tube rectified filament power supply for each tube, with the amazing Tungar rectifier bulbs
- Coleman regulators for regulation of filament supplies (a must for DHT tubes)
- Eight double c core iron pieces per tube that makes a total of 16 iron pieces per channel! Needless to mention that all of them have been wound in house
- Total weight is expected to reach around 200 kilograms per channel
More pictures are about to come shortly!
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