Welcome to SPECTRI.BG


OFFICE: 1700 - Sofia, Student Complex, 5A Baku Street, office 5-2,3

LAB: 1421 - Sofia, dc. Lozenets, 30, St. Theodosius Turnovski St., ap. 3

IB-C: 1421 - Sofia, dc. Lozenets, 30, St. Theodosius Turnovski St., ap. 3

Phones: (+359 2) 963-0464, 963-2638
Fax: (+359 2) 963-1074

About us



Since the company was found at the end of 1990, (Manager M.Sc.Eng. Boris Mihaylov) the company aims to claim its positions to be the leading “Center of competency” in Republic of Bulgaria – in the field of noise and vibrations. It’s a great honor and responsibility to maintain the development and realization of the right to be exquisite representative (market, technical, engineering, service…) of the company, leader in the field of noise and vibrations, Brüel&Kjaer – Denmark.

SPECTRI has received the trust and have taken the responsibility to be exquisite partner and distributor (with ensured full warranty service) of world leading manufacturers products which with proud can say their names: Brüel&Kjaer – Denmark, Brüel&KjaerVibro – Denmark, EMS Brüel&Kjaer – Denmark, Instantel – Canada,SoundEar, CTC – USA.

Mission – Our mission is to help our clients and partners to improve their working conditions, safety, competitiveness and efficiency. In this way, we strive to influence the environment, the quality and the joy of life.

Vision - Our vision is to be the preferred partner and provider for leading companies and institutions, which are thinking and carrying about their business and human comfort, development and prosperity and also to be the national centre for competence and knowledge in the field of vibrations and noise.



Equipment, systems and program software in the field of measurements, analysis, noise control, vibrations, process parameters, gas emissions

Vibrations, process control and testing of the machine condition systems

Equipment in the field of environment, hygiene and safety

Production quality control systems

Equipment in the field of telecommunications and specialized acoustic applications

Calibration and testing systems

Sensors and systems for measuring and monitoring of air velocity, temperature, humidity and others.

Balancing machines


Engineering services

Projects, montage, installations and measurement, control, analysis and vibration and noise reduction project consultations

Diagnostics, expertise, conclusions, balancing services and others

Laboratory testing, sensors calibration, noise and vibration transducer measurement systems

Consultations on ensuring intra company quality control, traceability measurements, metrological assurance.

Quality control consultation activity, measurements traceability, metrological assurance.

Organization of seminars, symposiums, courses, trainings and information about the newest achievements in the field of noise and vibration.