Entries by Jesús Alejos

Compact modular amplifier(II)

Following the information of the compact system, we attach some measurements made to the prototypes. Frequency response: 2Hz-80KHz +/- 1dB Distortion at 10W RMS output: 0,0023% Distortion at 20W RMS output: 0,0039% Distortion at 40W RMS output: 0,027% Distortion at 60W RMS output: 0,094% Distortion at 80W RMS output: 0,33% All measurements with 4 Ohms […]


In order to achieve the highest possible quality, Jorge Mata, from Sottovoce audio, proposes this design in three way. For this we use a medium-bass transducer of size 6.5″ MTM configuration, which will offer excellent clarity and definition in its band and pressure level. At low frequencies it is completed with two 10″ transducers that […]


Very high performance custom audio system developed in team by Sottovoce Audio (design and electroacoustics) and ATM (electronics). The customer aimed for a high demanding loudspeaker trio, with high definition and, at the same time, high sound pressure levels. The design is formed by three “main monitor” loudspeaker cabinets (1×5″ high freq. + 2×6,5″ mid […]

Acoustic Technology mfg and Sonic Imagery Labs

Since April 1st, Acoustic Technology mfg distributes the components of Sonic Imagery Labs for Spain and Portugal. As you know, Sonic Imagery manufactures, among other components, the SIL992 and SIL994 Enh Ticha low noise Class A operational amplifiers, which are fully compatible with the single and dual operational amplifiers of most manufacturers and used as […]

Previo PAM2

We started the development and installation of a prototype in pure Class A preamplifier. These are the printed circuit boards and components required for assembly.


We recently had two orders of multichannel amplifiers for home theaters equipped with Dolby Atmos; one of nine channels, and the other eleven channels. In the eleven channels, the client asked us to the front panel we did the purest MacIntosh style with indicators for the front channels. These are the results of eleven channels […]


Recientemente hemos tenido dos encargos de etapas multicanal para salas domésticas equipadas con Dolby Atmos; una de nueve canales y otra de once canales. En la de once canales, el cliente nos pidió que el panel frontal lo hiciéramos al más puro estilo MacIntosh con indicadores para el trio frontal. Estos son los resultados de […]