TOA Electronics H-3 Protection Circuitry Information, Equalization, When not using a subwoofer

Page 11

10. PROTECTION CIRCUITRY INFORMATION

The speaker's tweeter has built-in overload protection circuitry. (The woofer does not have the circuitry.)

If there is an extremely high level input signal to the tweeter, the overload protection circuitry is activated and cuts off the signal input to the tweeter.

A sudden drop of the sound volume level during speaker operation indicates that the overload protection circuitry has been activated. In such a case, reduce the amplifier volume and wait. The protection circuitry is automatically reset after approximately ten seconds. After the circuitry is reset, set the volume at a lower level than before.

Caution

This overload protection circuitry does not completely protect the tweeter. Depending on the nature of the excessive signal applied to the speaker, there may be damage to the speaker before the protection circuitry can operate. Also, depending on the duration of the excessive input signal, the protection circuitry may be damaged and will not recover. Take special care that the excessive input is not applied to the speaker during use.

11. EQUALIZATION

The H-3 and H-3WP speakers are designed to provide good quality sound without additional signal processing. However, by equalizing them as shown below, sounds can be made more powerful and intelligible.

Using a digital signal processor, use the following equalization settings.

[When not using a subwoofer]

Filter

Frequency

Gain

Q

 

 

 

 

 

 

HPF

63 Hz

 

 

 

0.707

 

 

 

 

 

 

 

 

 

PEQ

100 Hz

 

+9 dB

2.871

 

 

 

 

 

 

PEQ

220 Hz

 

–8 dB

2.871

 

 

 

 

 

 

PEQ

500 Hz

 

+5 dB

2.871

 

 

 

 

 

 

PEQ

5,000 Hz

+1.5 dB

0.305

 

 

 

 

 

 

[When using a subwoofer]

 

 

 

 

 

 

 

Filter

Frequency

Gain

Q

 

 

 

 

 

 

HPF

63 Hz

 

 

 

0.707

 

 

 

 

 

 

 

 

PEQ

100 Hz

 

+5 dB

2.871

 

 

 

 

 

PEQ

220 Hz

 

–8 dB

2.871

 

 

 

 

 

PEQ

500 Hz

 

+5 dB

2.871

 

 

 

 

PEQ

5,000 Hz

+1.5 dB

0.305

 

 

 

 

 

 

[dB]

 

 

 

 

 

 

 

+20

 

 

 

 

 

 

 

+10

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

-10

 

 

 

 

 

 

 

-20

 

 

 

 

 

 

 

-30

 

 

 

 

 

 

 

-40

 

 

 

 

 

 

 

20

50

100

500

1k

5k

10k

20k

 

 

 

Frequency - Gain

 

 

[Hz]

 

 

 

 

 

 

[dB]

 

 

 

 

 

 

 

+20

 

 

 

 

 

 

 

+10

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

-10

 

 

 

 

 

 

 

-20

 

 

 

 

 

 

 

-30

 

 

 

 

 

 

 

-40

 

 

 

 

 

 

 

20

50

100

500

1k

5k

10k

20k

 

 

 

Frequency - Gain

 

 

[Hz]

 

 

 

 

 

 

11

Image 11
Contents Operating Instructions Table of ContentsWhen the Unit is in Use Safety PrecautionsSafety Symbol and Message Conventions When Installing the UnitGeneral Description FeaturesHandling Precautions Nomenclature and Dimensions Installation Example Using Two-Gang Electrical Box InstallationContents Base frame Speaker cable Two-gang electrical box Installation ProceduresSingle connection Bridge connection When selecting 8 Ω When selecting 16 ΩPreset by the factory Detachable input connector Removing the Front Grille Waterproofing the Base Frame Installation PrecautionsOutdoor USE H-3WP only Repainting the Front GrilleEqualization When not using a subwooferWhen using a subwoofer Protection Circuitry InformationAccessories Specifications

H-3WP, H-3 specifications

TOA Electronics has long been recognized as a leader in professional audio solutions, and among their innovative offerings is the H-3 and H-3WP series of loudspeakers. Designed with performance and versatility in mind, these models stand out in various environments, including classrooms, conference rooms, and outdoor spaces.

The H-3 series is designed to provide clear and powerful sound reproduction. Its sleek and compact design makes it suitable for both permanent installations and temporary setups. The robust construction ensures durability while maintaining a lightweight profile, allowing for easy handling and mounting. The H-3 features a built-in transformer that provides multiple impedance settings, making it adaptable to different systems and requirements. This flexibility permits users to easily integrate it into existing audio systems, enhancing overall sound quality without major changes to the system architecture.

Another significant aspect of the H-3 series is its uptick in sound performance. Equipped with a high-quality woofer and a high-frequency driver, the H-3 delivers a wide frequency response, ensuring that voice intelligibility remains high and that music playback retains its dynamic range. This makes it highly effective for speech applications, as well as for musical performances, whether in a small venue or a larger setting.

The H-3WP variant expands the functionality of the H-3 series by offering weather-resistant features for outdoor applications. It incorporates a robust design that can withstand varying weather conditions, making it suitable for outdoor events, parks, and other exposed areas. The weatherproof enclosure protects the internal components from rain, dust, and temperature fluctuations, ensuring consistent performance and longevity.

Both models highlight TOA's commitment to innovative technologies. From advanced acoustic design to high-efficiency components, the H-3 and H-3WP series deliver reliable audio solutions. Users can expect high performance without compromising on ease of installation or maintenance.

These loudspeakers also feature flexible mounting options, enabling users to tailor their setup to specific needs. Whether used in public address systems, background music applications, or reinforcement for live events, the H-3 and H-3WP models provide outstanding service.

In summary, TOA Electronics' H-3 and H-3WP loudspeakers represent a blend of advanced technology, superior sound quality, and rugged durability. They are ideal for users seeking versatile audio solutions that can perform reliably across various environments. Whether for indoor or outdoor applications, these loudspeakers are a top choice for professionals in the audio industry.