TOA Electronics i12, T12 user manual 100 17.0 35.0 11.0 22.0 14.0 Polarity Checking

Page 5

Should you encounter any problems obtaining Speakon connectors, please contact Neutrik or its distributors directly on the following numbers:-

UK: NEUTRIK MARKETING:

0171 792 8188

USA: NEUTRIK USA INC.:

(201) 901 9488

For a world wide list of distributors, please contact Neutrik directly:-

NEUTRIK AG:

+41 7529666

Cable choice consists mainly of selecting the correct cross sectional area in relation to the cable length and the load impedance. A small cross sectional area would increase the cables series resistance, inducing power loss and response variations (damping factor).

Connectors should be wired with a minimum of 2.5 sq. mm (12 gauge) cable. This will be perfectly satisfactory under normal conditions. In the case of very long cable runs the wire size should exceed this, refer to the following table for guidance:-

CABLE RUN

C.S.A. OF EACH

CABLE

% POWER LOSS

% POWER LOSS

(m)

CONDUCTOR (mm)

RESISTANCE Ω

INTO 8Ω LOAD

INTO 4Ω LOAD

10

2.5

0.14

1.7

3.5

 

4.0

0.09

1.1

2.2

 

6.0

0.06

0.73

1.5

25

2.5

0.35

4.3

8.6

 

4.0

0.22

2.7

5.4

 

6.0

0.14

1.8

3.6

50

2.5

0.69

8.6

17.0

 

4.0

0.43

5.4

11.0

 

6.0

0.29

3.6

7.2

100

2.5

1.38

17.0

35.0

 

4.0

0.86

11.0

22.0

 

6.0

0.58

7.2

14.0

4.Polarity Checking

It is most important to check the polarity of the wiring before the speaker system is flown. A simple method of doing this without a pulse based polarity checker for LF units is as follows: Connect two wires to the +ve and -ve terminals of a PP3 battery. Apply the wire which is connected to the +ve terminal of the battery to the speaker cable leg which you believe to be connected to pin 1+ of the speaker connector and likewise the -ve leg of the battery to pin 1-.

If you have wired it correctly the LF drive unit will move forward, indicating the wiring is correct. All that remains now is to connect the +ve speaker lead to the +ve terminal on the amplifier and the - ve lead to the -ve terminal on the amplifier. If however the LF driver moves backwards, the input connections need to be inverted.

If problems are encountered, inspect the cable wiring in the first instance. It should also be noted that different amplifier manufacturers utilise different pin configurations and polarity conventions, if you are using amplifiers from more than one manufacturer, check the polarity at the amplifiers as well as the loudspeakers.

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Contents T12 Page Contents Introduction Connectors/CablingUnpacking Pin 1+ is Positive Pin 1- is Negative100 17.0 35.0 11.0 22.0 14.0 Polarity Checking 17.011.0 Equalisation Amplification & Power HandlingCrossovers Dimensions Page Performance Data Page Page Fittings Technical SpecificationsML5 4TF WarrantyExploded View of Bracket Assembled View of Bracket Wall Mounting Bracket Assembly InstructionsDeclaration of Conformity Tannoy Loudspeakers are manufactured in Great Britain by

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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