Barth high power source loudspeaker

A high power point source loudspeaker

Barth line array column loudspeaker

A line array column loudspeaker


Loudspeaker systems

Clear and more even sound distribution

A loudspeaker system can amplify an acoustic sound source (ex. human voice) and distribute it to a defined listening area, in a room or in an open environment.

When using a loudspeaker system for a professional purpose it is essential to achieve a high level of either speech intelligibility and / or music intelligibility, and create as few reflections from the room's surface as possible.

Why to use pro audio products

This demands loudspeakers with controlled dispersion, both in the horisontal and vertical domain.
And the optimal placement and angling of the loudspeakers has to be defined exactly in order to distribute the sound to defined listening area.

Also the achievable sound pressure level has to be observed so there is sufficient headroom for genuine reproduction of the desired source.
Here the size of the listening area has to be observed because point source loudspeaker reduce the distributed energy by half per doubling of the distance (-6 dB-SPL).
If line source loudspeakers are used this reduction is only the half (-3 dB-SPL).

The need of a sub-bass

Frequency bandwidth of the loudspeaker system are also to be defined in relation to the signals the sound system has to be able to reproduce. If a sound system shall only reinforce the spoken word to a limited size of listening area, the need of sub-bass speaker are seldom necessary. On the contrary the need of sub-bass speakers are a demand when music reproduction is the main issue.

Why the 10 octaves are complex

Due to the very large differences in the wavelength of the audible frequency's (20 hz = 17 meter and 10.000 hz = 3,4 cm.) and the relative slow propagation of sound (343 m. / sec.), sound distribution has to be calculated for individual frequency regions. Primarily it can be stated that sub-bass (from 20 to 120 hz or 17 m. to 2,8 m.) distribution has to be calculated separately from the frequency bandwidth above (120 hz to 16.000 hz or 2,8 m. to 2,14 cm.)

Design and functionality

The physical dimensions and the cabinet design also have to be chosen, to fit the enviroment of where the speaker is to be installed / used. Example, in traditional churches the line array / column loudspeaker design is often an advantage because of its slim design, its "long-throw" behaviour and the narrow vertical dispersion.

Do you have space for the electronics

Another feature that can be of advantage or disadvantage are to have loudspeakers with build-in power amplification (which require both mains and signal cabling) or without build-in power amplifiers (which only require a loudspeaker cable).

Cable less loudspeakers are also possible for intermediate use in public areas, these can have build in accumulators for driving the electronics (wireless receiver and power amplifier) and can then be supplied either from a wireless microphone or from a wireless transmitter driven from a audio mixing console.

AudioExperts distribute the Barth Acoustic Systems loudspeaker products in Scandinavia.

  Frequency (Hz):   Octave:   Description
  16 to 32   1st   The human threshold of feeling, and the lowest pedal notes of a pipe organ.
  32 to 512   2nd to 5th   Rhythm frequencies, where the lower and upper bass notes lie.
  512 to 2.048   6th to 7th   Defines human speech intelligibility, gives a horn-like or tinny quality to sound.
  2.048 to 8.192   8th to 9th   Gives presence to speech, where labial and fricative sounds lie.
  8.192 to 16.384   10th   Brilliance, the sounds of bells and the ringing of cymbals. In speech, the harmonics of the sound of the letter "S" (8000-11000 Hz)


The Line of Business

  Food & Beverage

  Office landscape
  Conference rooms
  Meeting room

  Live music venues
  Multifunctional halls

  Class rooms
  Music rehearsal rooms
  Assembly halls
  Lecture rooms

TEL: +45 5126 8207