Bluetooth Speakers

wood speakers hand made
Bluetooth Family Speakers.

Design, research and development project for three Bluetooth speakers.
Datasheet:

Subjective Methods for Evaluating Sound Quality. (Spanish translation)

Book on desktop
Methods for Evaluating Sound Quality.

It is a non- official translation to Spanish from the second chapter (Subjective Methods for Evaluating Sound Quality) of “Handbook For Sound Engineers”, fifth edition.
Métodos Subjetivos Para La Evaluación De Calidad De Sonido.

Guitar Valve Preamplifier

Guitar valve preamp circuit
Guitar Valve Preamplifier.

It is a project that unifies a 2- valve guitar preamplifier based on the Marshall (JCM800) and Fender (Champ 5E1) circuit designs. This work was published by AES Colombia as a chapter in the book “Avances de Audio en Latinoamérica“.