Steffen Acosta

Hi, I’m Steffen and driven by media – especially by sound. I graduated from Stuttgart Media University (HdM) in southern Germany, worked as a technical employee in the HdM recording studio and I am currently looking for new opportunities in Vienna while I complete my Master in Audio Design at the University of St. Pölten.

I am looking for ways to bring music and performing arts to life or create more fun interactive entertainment.

1. Semesterproject – R-Two (the Retro Radio)

R2 – the retro radio – combines the most modern features with a tried and tested design. Here vintage character meets high usability through connectivity. For the project „Retro-Radio“ was decided for reasons of upcycling thought, as well as the creation of a product, which could reach market maturity. The main question here is: „Under what conditions would one use an aging radio in everyday life?“
Our goal was to equip the R2 with modern HiFi sound as well as to be able to adjust the original sound character of the radio by means of sound design.
The project started with the acquisition and cleaning of a 1958 Radione Duplex, using the phono input to measure and store the frequency response of the radio. This served as a reference for the later „vintage mode“ of the radio.
Next, all the old, non-functional components were removed to make room for the new technology.
The core of the R2 is a DSP unit including a digital amplifier, which allows connection to Bluetooth, WiFi, Aux, USB and LAN. 2 Tang Band tweeters and a subwoofer were connected to the board and built into the radio’s cabinet. The latter was screwed to the back panel of the radio. However, not to the original back panel, but a first drawn and then lasered plexiglass panel to make even the inner workings of the R-Two transparent.
Another feature is the original volume control, which directly operates the amplifier’s potentiometer by means of an axis extension and coupling. To imitate the glow of the tubes and the magic eye, LEDs have been installed, which are also powered by the DSP unit. All connections provided by the board were attached to the Plexiglas wall with appropriate extensions and mounting sockets so that they are always freely accessible.
Finally, the original frequency response of the radio was approximated using the Windows DSP app. This allows switching back and forth between HiFI and vintage sound.