Klara Geist

Exclusive high-end mobile and stationary PA soundsystems. Handcrafted in Berlin. Designed with passion for detail. Highest quality components. Skillfully crafted. High-end audio performance. 
The official sound-outfitter for Bullitt Cargo Bikes. Professional Soundbike rental service. Branded promotion Soundbikes. Custom designs.

The Transformer / Serial Model / 2010

The Transformer is a portable mobile 2-way active soundsystem. Custom designed to fit the award winning Bullitt cargobike. The system can be operated on a bicycle whilst riding - for stationary use it can be placed on stands. The combination of balanced design and new technology makes this portable PA one of the most powerful systems on the globe. The Transformer was originally developed as a custom design for the Berlin based project "Bearpit Karaoke". A mobile, compact, powerful hard working soundsystem that can be easily transported for the Karaoke events, by using the Bullitt cargobike. The 'Bearpit Karaoke' has since become legendary generating crowds of over 2000 every sunday in Berlins Mauerpark. The Transformer is our biggest and most powerful high- end mobile soundsystem, so far.

Technical Data

Housing material: Wood (of layered plate materials)
Dimensions: 70 x 65 x 28 cm (each speaker)
Weight: ~ 50 kg (each speaker)
Frequency response: 60 – 20.000 Hz
Amplifier: 2 x Digital Amplifier (600 Watt / max. 120 dB SPL.)
Input: 1 x Line In (Player or Mixer) / 1 x 12 Volt (for charger)
Battery: sealed lead acid battery (~ 6 hours playback on max. volume)

mind da gap "o jardim" (feat. rey) / 2012


Klara Geist / Lautsprechermanufaktur
Gartenstraße 90 / 17309 Pasewalk / Germany