The MARK teaching public address system is a combination of the DSP-AP3000R audio host, MKSP650 speakers, and MK-903 microphone, consisting of 3 devices for a highly compatible and audiophile sound quality teaching PA system.
Interactive Teaching Amplification System Specifications
This configuration employs an amplified main unit, suspended microphone, and speakers. The suspended microphone offers advantages over traditional wireless microphones or conference microphones: 1. Easier management, installed in a fixed location, eliminating the need for setup and teardown before and after meetings; 2. Operates on 48V phantom power, eliminating the inconvenience of battery installation and being more environmentally friendly; 3. Longer pickup distance, no need to hold the microphone, allowing for more natural and relaxed speaking; 4. One suspended microphone can be used by multiple people, avoiding the need to pass it around; 5. Saves investment costs.
One, Intelligent Teaching Amplification System Main Unit MARK DSP-AP3000R
(1) Product Overview
This product is a specialized audio amplification equipment custom-designed for school teaching, incorporating our proprietary technologies such as adaptive feedback suppression, echo cancellation, and digital equalization to achieve long-distance microphone pickup. Simply install one microphone pickup (our companion product MK-906) above the podium, and the entire area is fully covered, allowing teachers to interact with students without the need for any additional amplification equipment.
The system host provides a 48V phantom power supply, which can be directly connected to the microphone. The accompanying microphone features a high-sensitivity, high-fidelity condenser element, with a long pickup distance and clear, natural sound. Equipped with an exceptional digital audio processor, it utilizes advanced high-speed floating-point algorithms to achieve adaptive feedback suppression, dynamic automatic noise reduction, and echo suppression. This enables long-distance microphone pickup and remote interactive teaching. The amplification is clear, noise-free, and has an even sound field.
This system resolves the issues of traditional wireless microphones requiring frequent battery changes or charging, and being prone to damage, thus facilitating equipment management.
This product can also be equipped with a 2.4G tri-functional wireless microphone. The teacher can easily hang the microphone around the podium for sound pickup, and students can use the wireless microphone to answer questions. The 2.4G tri-functional wireless microphone combines a wireless microphone, laser pointer, and wireless PPT page-turning function, featuring stable performance and non-interference, among other advantages. (This feature is available for customization.)
(II) Product Structure
(3) Software Features:
Connect the amplifier via an RS232 serial port to the computer for control
2. Set the low-pass and high-pass frequency values in the software interface.
Set the thresholds for noise gate and automatic compression limiting.
Adjust the built-in 10-band equalizer frequency points.
5. Adjust the volume of the local microphone input.
6. Adjust the volume of the AUX input signal.
7. Adjust the volume of the AUX output signal.
(4) Product Features
1): One-click setup for fully automatic operation mode; no acoustic field tuning required upon system installation; easy to use.
2): Integrated digital high-speed adaptive feedback suppression circuit (AFC) effectively eliminates howling, achieving high-sensitivity microphone long-distance high-fidelity pickup.
3): Integrated Digital Echo Cancellation Circuit (AEC), effectively eliminates echoes, enabling remote interactive teaching.
4): Built-in Active Noise Cancellation (ANC) filter, which eliminates background noise from the environment without affecting the high-quality transmission of voice signals, enhancing the signal-to-noise ratio and improving audio quality.
5): Built-in Automatic Gain Control (AGC): This system employs intelligent level control technology to ensure clear, consistent voice signals with minimal fluctuations in signal level. It maintains the continuity of speech and enhances clarity, ensuring comfort in listening.
6): Internally adjustable digital high-pass and low-pass controls, allowing for flexible adjustment of voice frequency response range.
7): Built-in digital limiter: Prevents sudden high signals from damaging the system and also improves the pickup distance.
8): Built-in 10-band digital graphic equalizer: more precise frequency control.
9): Voice-activated encouragement feature to enhance clarity.
10): Six microphone inputs with 48V phantom power supply. Microphone 1-4 are controlled by one switch group, and microphone 5-6 by another. (Microphone 1-4 feature a 4-in-1 selection, while microphone 5/6 are direct pass-through.)
11): Multi-functional input/output interfaces: Four inputs, four outputs, where the signal from LINE IN 1 can be mixed into line output and local amplification output, enabling the mixing of microphone voice and music signals for remote interactive teaching (transmitted via MIX OUT); the signal from LINE IN 2 is output from the local amplification; the signal from AUX IN is only output from the local amplification, without interfering with voice transmission; MIC OUT is only for microphone signal sampling or recording output,不受其他信号干扰; MIX OUT outputs mixed signals (local microphone signals and LINE IN signals).
12): 2.4GHz three-in-one wireless microphone with seamless integration, featuring wireless microphone, laser pointer, and wireless PPT page turner (customizable).
13): Microphone volume/music volume and machine parameter adjustments, with remote control via computer.
14): Automatic Microphone Selector (Choose One of Four): Automatically turns on the microphone closest to the teacher and turns off other channels, aiming to: a) Reduce noise transmitted to the speaker from the environment through the microphone, which is beneficial for maintaining classroom quietness and the clarity of the teacher's voice. b) Decrease the conditions for feedback howling caused by sound or electromagnetic waves from the speaker entering the microphone.
15): Features a one-touch mute function. The case is equipped with a dedicated Phoenix plug external mute switch interface, allowing you to press the mute switch for temporary silence as needed. The interface provides a separate 5V power supply.
16): The system features an auto-mute function. It automatically mutes within the set time frame when no microphone signal is detected.
17): Keyboard Lock Function: After the administrator finishes debugging the device, lock the panel buttons to prevent unauthorized operation.
18): Offer RS232 serial port and host computer software, which can be controlled via computer and connected to central control.
Intelligent Teaching System Compatible Microphone MK903
Technical Specifications:
Type: Pre-polarized Capacitive
Directionality: Ultra-hearts shape
Microphone Diaphragm: ≤100°
Frequency Response: 30-20,000 Hz
Sensitivity: -50dB ± 3dB (1dB = 1V/Pa at 1kHz)
Impedance: 600Ω
Maximum Sound Pressure Level: 132 dB SPL
Signal-to-Noise Ratio: >70Db, 1KHz at 1Pa
Dynamic Range: 108Db, 1kHz at Max SPL
Illusion Power Supply; 48VDC, 2mA
Dimensions: Length 240mm; Diameter 21.0mm
Connector; XLRM 3-Pin Male Cannon
Section 3: Intelligent Teaching Amplification System Speaker - MARK SP650, Dual 5-inch Coaxial Speakers
Product Overview
This series of speakers is specifically designed for educational public address systems, emphasizing high-fidelity sound reproduction. The product is designed strictly according to acoustic propagation principles, with two wall-mounted speakers easily covering the entire classroom without any sound dead zones. It eliminates the issues of traditional low-cost educational speakers, such as limited transmission distance, low sensitivity, uneven sound pressure, and dead zones. The product features a unique full-range speaker unit, ensuring extremely even frequency response and avoiding the drawbacks of low sensitivity, poor sound balance, and unnatural sound quality associated with crossover units. Suitable for classrooms, conferences, multimedia amplification, and background music amplification, among other venues.
Product Features:
1 Employed coaxial speaker units with prominent vocal expression, breaking through technical limits
2 Ultra-high sensitivity, easy to push and with better transparency
3 Individual power: 100W, peak power: 120W, high-temperature resistant design, better suited for low-power audio amplifiers
The case features a unique slanted design to reduce sound interference and minimize feedback.
The enclosures are designed with a compact size and high-pressure push-pull configuration, emphasizing clear language delivery.
The 6 speaker units are designed with an 8 ohm impedance, facilitating parallel usage.
7 High-temperature resistant coil design, enhanced durability
Section 3: Technical Specifications:
Unit: Dual 5-inch Coaxial x2, Nominal Impedance: 8Ω, Power Handling: 100W (RMS) / 200W (PEAK), Sensitivity Level: 87dB, Maximum Sound Pressure Level: 107dB, Housing Material: MDF, Dimensions: 180x325x170mm (WxHxD), Net Weight: 3.7 Kg, Frequency Response: 55Hz-20KHz, Hanging System: Included
