5. Amplification & Power Handling

As with all professional loudspeaker systems, the power handling is a function of voice coil thermal capacity. Care should be taken to avoid running the amplifier into clip (clipping is the end result of overdriving any amplifier). Damage to the loudspeaker will be sustained if the amplifier is driven into clip for any extended period of time. Headroom of at least 3dB should be allowed. When evaluating an amplifier, it is important to take into account its behaviour under low impedance load conditions. A loudspeaker system is highly reactive and with transient signals it can require more current than the nominal impedance would indicate.

Generally a higher power amplifier running free of distortion will do less damage to the loudspeaker than a lower power amplifier continually clipping. It is also worth remembering that a high powered amplifier running at less than 90% of output power generally sounds a lot better than a lower power amplifier running at 100%. An amplifier with insufficient drive capability will not allow the full performance or the loudspeaker to be realised.

It is important when using different manufacturers amplifiers in a single installation that the have very closely matched gains, the variation should be less than +/- 0.5dB. This precaution is important to the overall system balance when only a single active crossover is being used with multiple cabinets, it is therefore recommended that the same amplifiers are used throughout.

6. Crossovers

The T12 and i12 are supplied as standard for passive operation via the internal crossover network. If higher peak outputs are required then both models can be used in conjunction with the Tannoy TX2 controller/crossover which provides high pass filtering and a degree of parametric equalisation (see performance data section), as well as a fixed crossover point for use with sub- bass loudspeakers.

7. Equalisation

The T12 and i12 loudspeakers are designed to need no equalisation or correction to overcome system limitations. As a result, they will only need equalisation to compensate for difficult acoustic environments.

Over equalisation can reduce system headroom, and introduce phase distortion resulting in greater problems than cures. If equalisation is required then it should be applied gently and smoothly. T12 and i12 loudspeakers are point source, phase coherent designs and violent equalisation will be detrimental to the overall sound quality.

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TOA Electronics T12, i12 user manual Amplification & Power Handling, Crossovers, Equalisation
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i12, T12 specifications

TOA Electronics has long been a key player in the field of public address systems and professional audio solutions. Among its latest offerings, the TOA T12 and i12 models stand out for their advanced technology and exceptional sound quality. These innovative products are designed to cater to various audio requirements, making them suitable for both commercial and professional environments.

The TOA T12 is renowned for its versatile features that enhance audio performance. One of its main highlights is the integrated DSP (Digital Signal Processing) engine, which allows for comprehensive audio control and optimization. This technology enables users to tailor the sound to their specific environment, ensuring clarity and precision during playback. The T12's intuitive interface simplifies operation, allowing users to easily navigate settings and make adjustments on the fly.

Equipped with a powerful amplifier, the T12 delivers impressive sound output, ideal for large venues or events. Its robust build quality ensures reliability, even in challenging acoustic settings. Additionally, the T12 incorporates feedback suppressor technology, which helps eliminate unwanted feedback, ensuring a seamless audio experience.

On the other hand, the TOA i12 is designed with portability and durability in mind. This model is particularly well-suited for mobile applications, such as events or presentations where setup speed is essential. The i12 features a lightweight design without compromising on performance, making it easy to transport and set up in different locations. It comes with wireless connectivity options, allowing for flexible audio streaming and easy integration with other devices.

Both the T12 and i12 models utilize advanced speaker technology for enhanced sound reproduction. These systems often incorporate high-quality drivers and crossover networks that deliver a balanced audio experience across a range of frequencies. The result is a rich, full-bodied sound that appeals to both speech and music applications.

In conclusion, the TOA Electronics T12 and i12 represent the pinnacle of modern audio engineering. Their array of features, including DSP technology, powerful amplification, and portability, make them suitable for a wide range of applications. With a focus on sound quality, reliability, and user-friendly operation, these models are an excellent choice for anyone in need of robust audio solutions in various environments. Whether for permanent installations or temporary setups, TOA continues to set the standard for excellence in professional audio.
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