Band | TOA |
Model | A-3624D |
Power Source | 100 - 240 V AC, 50/60Hz |
Rated Output | 240 W |
Power/Current Consumption | 314 W (Rated output), 70 W (based on EN62368), 200 mA or less (when power switch is OFF) |
Frequency Response | 50 Hz - 20 kHz ±3 dB (1/8 rated output) |
Distortion | 1 % or less at 1 kHz, rated power (20 kHz LPF (AUX-0025)) |
Tone Control | Bass: ±10 dB at 100 Hz Treble: ±10 dB at 10 kHz |
S/N Ratio | 88 dB or more (Master volume: min.) 76 dB or more (Master volume: max.) 55 dB or more (INPUT 1 - 6) 72 dB or more (INPUT 7) (A-weighted) |
Audio Input | INPUT 1, 2: -60 dB(*1)(MIC) / -20 dB (*1) (LINE) selectable, 600 Ω, electronically-balanced, removable terminal block (3 pins) Note: MIC inputs are equipped with phantom power (24V DC, ON/OFF switchable) INPUT 3, 4: -60 dB(*1), 600 Ω, electronically-balan |
Input Bus | INPUT 1 - 4: BUS 1 INPUT 5 - 6: BUS 1/BUS 2 selectable INPUT 7: BUS 2 |
Audio Output | Speaker out: Low impedance (4 - 16 Ω) / High impedance (DIRECT, ZONE 1, ZONE 2: 100 V / total 42 Ω), removable terminal block (6 pins) (ZONE 1 / ZONE 2 is selectable, max. 240 W per output) Rec out: 0 dB(*1), 600 Ω |
Control Input | 4 channels. no-voltage make contact input, open voltage: 35 V DC or less, Short circuit current: 10 mA or less, removable terminal block (4 pins) REMOTE VOLUME: Removable terminal block (4 pins) ZONE CONTROL IN: No-voltage make contact input, even voltag |
Control Output | POWER REMOTE OUT: Open collector output, withstand voltage: 30 V DC or less, control current: 25 mA or less, removable terminal block (4 pins) EMERGENCY OUT: Open collector output, withstand voltage 30 V DC or less, control current: 25 mA or less, removab |
Chime | 1-note, 2-note, or ascending, 4-note chime, or None selectable with switch setting |
Indicator | 5-point LED output level meter, Power LED, LAN connect LED, Priority LED, Emergency LED, Thermal protection LED, Over current protection indicator LED, CPU RUN LED, Error LED, Zone 1 LED, Zone 2 LED |
Operating Temperature | -10°C to +40°C |
Operating Humidity | 85 %RH or less (no condensation) |
Finish | Panel: ABS resin, black Case: Surface-treated steel plate, black, paint |
Dimensions | 420 (W) × 96.1 (H) × 313.1 (D) mm |
Weight | 5 kg |
Accessory | Power Cord (2 m) x 1, Audio Input Removavble Terminal Plug (3.81 mm, 3 pins) x 6, Control I/O Removable Terminal Plug (3.81 mm, 4 pins) x 4, Remote Control Removable Terminal Plug (3.5 mm, 4 pins) x 2, Speaker Out Removable Terminal Plug (5 mm, 6 pins) x |
The TOA A-3624D is a high-performance 240-watt digital mixer amplifier designed for use in public address (PA) systems. Ideal for venues like schools, factories, offices, and retail spaces. This Amplifier is a versatile and powerful solution designed for high-quality audio distribution in medium to large venues such as conference halls, churches, schools, and public spaces. This digital mixer amplifier combines the functionality of a mixer and an amplifier in one unit, allowing users to manage multiple audio inputs and deliver a clear and powerful sound output. With a 240-watt power capacity, the A-3624D ensures robust sound performance, making it ideal for public address systems and background music. Equipped with multiple input channels, including microphone and line inputs, this amplifier supports various audio sources, providing flexibility for different applications. Its digital design enhances sound clarity and reduces distortion, even at high volumes. Additionally, the A-3624D features a user-friendly control panel for easy sound management, and built-in protection circuits prevent overheating and overloading, ensuring safe and reliable operation. it combines digital signal processing (DSP) technology with flexible input/output options, offering high audio quality and reliability for various applications.
For users in Bangladesh who need a high-performance, multi-functional amplifier for professional sound systems, the TOA A-3624D offers excellent sound quality, durability, and ease of use.
The A-3624D delivers 240 watts of output power, making it suitable for medium to large spaces that require robust sound reinforcement. The amplifier is designed for continuous, reliable operation, supporting both low-impedance (4 to 16 ohms) and high-impedance (100V line) speaker systems. This flexibility ensures that the unit can be integrated into existing setups or new installations with ease.
One of the standout features of the TOA A-3624D is its use of digital signal processing (DSP), which ensures high-quality sound output with minimal distortion. The DSP allows for fine-tuning of audio signals, ensuring optimal sound clarity even in complex acoustic environments. Built-in functions such as equalization (EQ), bass and treble controls, and loudness adjustments help in tailoring the audio output to suit different sound system configurations and room acoustics.
The automatic gain control (AGC) feature maintains consistent volume levels, preventing sudden audio peaks or dips, which is particularly useful for announcements or background music in dynamic environments.
The A-3624D offers a range of input options, providing great versatility for various audio sources. It includes:
Each input channel has its own volume control and tone adjustment capabilities, enabling fine-tuning of individual audio sources to achieve a balanced mix.
The A-3624D features priority control, which is essential for public address systems where certain inputs (like microphones or emergency announcements) must override other audio signals. This ensures that important messages are heard clearly, even if background music or other audio is playing.
There is also a chime function for paging, which plays a pre-set chime tone before an announcement, signaling that an announcement is about to begin.
In addition to speaker outputs, the A-3624D has a range of other outputs, making it a central hub for more complex audio systems:
The front panel of the amplifier is designed for intuitive control, featuring individual volume knobs for each input, along with master volume control. This makes it easy to adjust levels on the fly without needing advanced technical knowledge. There are also LED indicators for power, signal presence, and protection, helping users monitor the system status at a glance.
To ensure durability and consistent operation, the A-3624D comes equipped with several protection mechanisms:
The A-3624D is designed with energy efficiency in mind, utilizing Class-D amplifier technology, which reduces power consumption and heat output. This makes it more efficient compared to older analog amplifiers and allows for longer, more reliable operation without the need for large cooling systems.
The amplifier can be integrated into a variety of sound systems. It is compatible with TOA’s other components and products, allowing for system expansion or the addition of more specialized functionality as needed. Whether installed in a small room or part of a large building-wide PA system, the A-3624D provides the flexibility and scalability required for different use cases.
The TOA A-3624D 240-watt digital mixer amplifier is a versatile and robust solution for public address and sound reinforcement systems. With its powerful output, flexible input and output options, digital signal processing capabilities, and user-friendly design, it is well-suited for a wide range of commercial and professional applications. Whether for background music, paging, or emergency announcements, the A-3624D ensures high-quality sound delivery with reliability and ease of use.
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