Audio Consulting Switzerland

Specialists in very high quality audio, Designs Amplifiers, Preamplifier, Phono Preamplifier and R-evolution Turntable etc.

Adapting New Technologies into Classic Hi-Fi systems, without compromising on Decades of Audio tradition.

MITA The Mains Independant Tube Amplifier
SE battery tube amplifier

MITA The Mains Independant Tube Amplifier


Stereo SE 15w / Channel, Three Silver Rock transformers per channel, Fully Lithium battery powered, All silver internal wiring, Veneer to customer’s request.

“Do-It-Yourself … That’s the choice I did and the reason you’ll find several schematics, mainly for tube electronics, but also some formulas for loudspeakers”

Audio Hi-Fi DIY – Claudio Bonavolta

Measures Conversion, Electronics, Loudspeakers, RIAA preamps, Solid state MC preamps, Solid state preamps and Solid state amps.

Audio Hi-Fi DIY - Claudio Bonavolta

(Proper Loudspeaker Design is more complex than Launching Rockets into the Ocean – Ananth)

Tapered Quarter Wave TubeFirst described by Paul Voigt in 1930, TQWTs allow a good quality-to-price ratio. They are also easy to build.Similar to transmission lines, the TQWT is different by its shape, a kind of horn is used as back load but the driver is not placed at the beginning of the cone as usual but on its side.

In closed boxes, the back wave of the speaker should be completely absorbed (= converted in heat) by the damping material.As the speaker is nearly transparent to sonic waves, if a back wave returns after a reflection on the back wall, some part will also come out through the speaker with some delay giving a not very clean sound.

PIC RISC microcontrollers – Peter Luethi

This website provides you helpful information about Microchip PIC 8 Bit RISC microcontrollers. Several assembler source code listings are available for non-commercial use. There are also tools for using your PC for measuring or regulating electronic applications. I’am working on several projects, e.g. a precision digital altimeter to use in my radio controlled airplanes.

dot matrix LCD

Radio Controlled Modeling – RC Circuits

PIC Assembler Projects, PIC Assembler Modules, Electronic Circuits, Student Projects, R/C Modeling Circuits, Servo Checker. Projects of Peter Luethi – Switzerland.

“The current concept incorporates a wireless transmitter and receiver and is thought to be used for remote controlled airplanes or appliances with two seperate parts.”