To meet the demands of modern meeting rooms for efficient, organized, and high-fidelity audio conferencing, this solution recommends the MP9866 Digital Conference System. The system integrates digital control, high-fidelity audio transmission, and flexible meeting management, aiming to create a fully functional, stable, and user-friendly conference environment. It is suitable for various administrative meetings, academic seminars, business negotiations, and multi-purpose hall events.
Design Objectives
High-Fidelity Voice Transmission and Clear Sound Reinforcement: Employs full digital audio processing and DSPPA column speaker with racetrack-shaped driver units to ensure accurate voice reproduction and excellent mid-to-high frequency performance.
Flexible Conference Speech Management: Offers three speaking mode options: Automatic, Free, and Chairman Priority. The system supports 1–6 simultaneous speakers, with the chairman unit having priority control.
Simple and Reliable Integrated System: Utilizes a “daisy-chain” wiring method with dual backup via 8-core cable interfaces and RJ45 network interfaces, facilitating installation, maintenance, and expansion.
High Compatibility and Multi-Scenario Applicability: Features multiple audio input/output interfaces, supporting connections to mixers, amplifiers, and other devices, to adapt to various acoustic environments and meeting sizes.
II. Application Solution for Small and Medium-Sized Conference Rooms (120 ㎡)

No. | Model | Product Name | Quantity |
1 | MP9866 | Digital Conference System Host | 1 pc |
2 | CM60 | Digital Conference System Chairman Microphone | 1 pc |
3 | CM61 | Digital Conference System Delegate Microphone | 20 pcs |
4 | D6576 | Professional Feedback Suppressor | 1 pc |
5 | DMX08 | 8-Channel Audio Mixing Console | 1 pc |
6 | D6648 | 4×8 Professional Audio Processor | 1 pc |
7 | MX1000II | Professional Stereo Power Amplifier (8Ω; 2×150W) | 2 pcs |
8 | DSP2410 | 100W Professional Conference Column Speaker with Racetrack Driver Design | 4 pcs |
Note: This solution is provided for reference only. For specific requirements, please feel free to contact us.
III. Solution Configuration Overview

Conference System: MP9866 Digital Conference System
Full Digital Audio Transmission for Superior Sound Quality: The system uses 8-core professional cables for full digital signal transmission, delivering strong anti-interference performance.
“Daisy-Chain” Connection for Simplified Wiring: All conference units (chairman and delegate units) are connected in series through a single cable, greatly simplifying the cabling process.
Intelligent Conference Management: Multiple Conference Modes: Supports FIFO (First-In-First-Out), Free Mode, and Chairman Priority Mode to adapt to different meeting formats.
Speaking Unit Limitation: Allows configuration of 1–6 simultaneous speaking units, effectively controlling meeting flow and preventing disorderly discussion.
Chairman Priority: The chairman unit holds the highest priority and can mute all delegate microphones at any time to maintain meeting order.
Sound Reinforcement System: DSP2410 Series Professional Conference Column Speakers
Emphasizes high sensitivity, low distortion, and strong directivity for optimized speech clarity.
DMX08 8-Channel Mixer: Provides audio input access for the meeting room.
D6675 Professional Audio Processor: Ensures clear speech with no distortion and eliminates acoustic feedback.
4×DSP2410 Professional Column Speakers: Deliver uniform sound coverage throughout the room.
2×DX1500 Dual-Channel Constant-Impedance Amplifiers: Provide ample sound pressure levels, even sound distribution, and accurate sound imaging.
IV. MP9866 Digital Conference System

Features

Connection Methods

MP9866 Panel Description

CM60/CM61 Digital Conference System Microphone

V. DSP2405 Series Professional Column Speaker
Driver Unit Design
Racetrack-shaped bass driver: Equipped with a 50×90mm (equivalent to 2.5") paper-cone bass driver paired with a 1" tweeter.
High Sensitivity & Low Distortion: The unique design offers high sensitivity and low distortion, delivering natural, smooth, and well-balanced sound quality.
Acoustic Performance
Linear acoustic structure: Enhances mid-to-high frequency reproduction with improved directivity, providing more focused sound energy and clearer, more balanced audio output.
Frequency response: 120Hz–20kHz across the entire series, covering key vocal and music frequency bands.
Maximum SPL: Ranges from 105dB (DSP2405) to 115.7dB (DSP2430), suitable for medium to long-distance sound reinforcement.
Structure and Appearance
Aluminum alloy enclosure: Sealed design for durability and reduced interference noise.
Streamlined metal grille: Integrated with the enclosure for a modern and elegant appearance.
Power & Model Range
Power options range from 50W to 300W, with a total of five models available to suit different room sizes and installation needs.
Installation & Application Scenarios
Flexible installation: Supports multi-power level adjustments (e.g., optional 100V/8Ω configuration).
Applicable venues: Ideal for small and medium-sized venues such as restaurants, tea houses, stations, schools, plazas, office buildings, medium-sized conference rooms, home theaters, and churches

Model | DSP2405 | DSP2410 | DSP2415 | DSP2420 | DSP2430 | |
Driver Unit | FR | 2.5”×2 | 2.5”×4 | 2.5”×6 | 2.5”×8 | 2.5”×12 |
HF | 1”×1 | 1”×1 | 1”×1 | 1”×2 | 1”×3 | |
Rated Power (RMS) | 50W | 100W | 150W | 200W | 300W | |
Power Adjustment | 100V | 25W/50W | 50W/100W | 75W/150W | 100W/200W | 150W/300W |
8Ω | 50W | 100W | 150W | 200W | 300W | |
Freq. Response | 120-20KHz | 120-20KHz | 120-20KHz | 120-20KHz | 120-20KHz | |
Sensitivity | 88dB | 90dB | 91dB | 91dB | 91dB | |
Maximum SPL | 105dB | 110dB | 112.7dB | 114dB | 115.7dB | |
Coverage Angle | 140° (H)×20° (V) | 140° (H)X×20° (V) | 140° (H)×20° (V) | 140° (H)×20° (V) | 140° (H)×20° (V) | |
Dimension (L×W×H) | 332×75×110mm | 528×75×110mm | 775×75×110mm | 984×75×110mm | 1440×75×110mm | |
Net Weight | 1.92kg | 3.2kg | 4.8kg | 6.3kg | 9.4kg | |
VI. Case Studies

The MP9866 Digital Conference System is a comprehensive solution that integrates advanced technology, practical functionality, and reliable performance. It not only meets the core requirements of modern meeting rooms for superior audio quality and efficient management, but also adapts to evolving meeting needs through its flexible configuration and powerful features, making it an ideal choice for enhancing meeting efficiency and overall quality.
For decades, the DSPPA brand has developed into an industry benchmark, leading the national brand to the world.
Our powerful team of professionals is always ready to present comprehensive conference solutions for you, offering professional services tailored to your specific needs.
Prioritizing security and reliability, DSPPACS's enterprise-grade systems reduce background noise while supporting daisy-chaining for large rooms. Perfect for global enterprises and SMBs alike, our solutions simplify hybrid collaboration without compromising on sound quality.
Key benefits:
Superior HD audio with noise reduction Universal
compatibility (USB, Bluetooth, SIP)
Easy setup for instant conferencing
Upgrade your meeting experience with DSPPACS's professional Audio Conference Systems—engineered for clarity and efficiency.
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