Equalisation

user manual

TCS Compact series

Calculating the sound pressure level at a known distance from the PA

Sound intensity reduces rapidly as the distance from the source increases according to the inverse square law which, predicts that a doubling of distance will result in a reduction of ¼ the original, equal to a drop of 6dB, providing there are no reflections or reverberation. For every 3dB increase of speaker output you need a doubling of input power.

For example, in an open space where the front seats are 6 meters (20 ft) from the sound source and the back seats are 60m (200 ft) from the sound source, you would expect the sound pressure to drop by a factor of 100 (= 20 decibels) between the front seats and the back seats.

In a ‘real world’ enclosed auditorium, this reduction is partially mitigated by the effects of reverberation in the distant field and, in the near field, because the speaker looks more like a wall source than a point source. Therefore the sound field in a room only behaves according to the inverse square law in a relatively narrow distanced range.

It should be possible to make considered decisions regarding the particular models of speakers that are required based on their sensitivity and SPL (sound pressure level) in order to achieve the desired coverage and level.

TCS COMPACT series enclosures are designed to provide smooth and even frequency response. They do not need excessive amounts of external equalisation to overcome the sonic deficiencies often found in many lesser designs.

In order to compensate for room acoustics, TCS Compact series enclosures require only minimal equalisation. As in any system, over-equalisation introduces phase shifts, distortion and a reduction in headroom, usually causing more problems than it cures. It is good practice to use as little equalization as possible, aiming to ‘cut’ frequencies rather than adding large amounts of ‘boost’.

Most rooms will have resonances that will be excited at particular frequencies needing some cut to help tame the sound. These problems are most pronounced at the lower frequencies where loudspeakers generally exhibit very little directional control. Under most circumstances a 1/3 or 1/2 octave graphic equaliser will generally be adequate, with the fader settings applied smoothly and sparingly for the required room compensation.

If you find that the system needs a lot of boost at lower frequencies you probably need additional sub-bass units.

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TCS COMPACT SERIES specifications

The Turbosound TCS Compact Series represents a significant evolution in compact sound reinforcement solutions, offering exceptional audio quality and versatile applications for both live sound and permanent installations. With a focus on performance and portability, the TCS series is designed to meet the demands of various environments, from concert halls to corporate events.

One of the standout features of the TCS Compact Series is its innovative design, which combines advanced acoustical engineering with cutting-edge materials. The cabinets are constructed from high-grade plywood, providing robustness while still being lightweight, making transport and setup effortless. The series includes both full-range models and dedicated subwoofers, allowing users to create customized sound systems tailored to their specific needs.

The TCS Series employs a proprietary waveguide technology that ensures a wide and even dispersion of sound, resulting in a consistent audio experience across a wide listening area. This feature is particularly beneficial in large venues where audience members may be located at varying distances from the stage.

Another notable technology integrated into the TCS Compact Series is the use of high-performance transducers. These drivers are engineered for optimum efficiency and clarity, delivering powerful low frequencies and crisp highs. The subwoofers are specifically designed to complement the full-range units, providing a deep bass response that enhances the overall sound quality of any performance.

The TCS series also features advanced rigging options, allowing for flexible deployment configurations. Whether flown in an array or positioned on the ground, the cabinets can be easily adapted to suit the venue's acoustics. This versatility makes them an ideal choice for both temporary setups and permanent installations.

Connectivity is another area where the TCS Compact Series excels. With a range of input and output options, including high-quality connectors, users can seamlessly integrate the systems with various mixing consoles and audio sources.

In summary, the Turbosound TCS Compact Series is a powerful, versatile, and durable solution for audio professionals seeking high-quality sound reinforcement. Its combination of innovative design, advanced technologies, and user-friendly features positions it as a go-to choice for live sound engineers and installation specialists alike. Whether for touring acts, corporate events, or fixed installations, the TCS series delivers exceptional performance you can rely on.