2.In-depth Analysis of Core Challenges
Taking into account the actual acoustic environment and application scenarios of medium and large-scale sports venues, the causes and manifestations of the two core challenges are summarized as follows:
2 in 4 out processor: Further processes audio including digital effects, feedback suppression and crossover control, improving sound stability and uniformity before output to amplifiers.
(3) Power Amplification and Sound Production Equipment
2 channel power amplifier: Amplifies audio signals from the processor to drive loudspeakers, ensuring sufficient level for large space sound reinforcement.
12 inch monitor loudspeakers (×2): Installed near the stage to provide clear audio feedback (accompaniment, vocal monitoring) for performers, improving performance accuracy.
6 inch line array loudspeakers + active subwoofers (2 sets):
Line array loudspeakers: Adopt 6 inch drivers. Vertical array design delivers long distance sound coverage with high directivity and even SPL decay, ideal for mid high vocal and music reproduction.
Active subwoofers: Enhance low frequency impact (drums, bass) and musical atmosphere, forming full band coverage with line arrays for performances and events.
(4) Power Management
Power sequencer: Connects equipment via power cables (black) for orderly power on/off to avoid surge damage. Provides overload protection and improves system stability.
2.Signal Transmission Path
(1) Signal Input: Signals from computer and microphones are routed to the mixer for multi channel mixing.
(2) Signal Processing: Mixer output is sent to the processor for digital audio optimization (noise reduction, gain control, sound field calibration), then to amplifiers.
(3) Power Amplification & Output: Amplified signals drive monitor loudspeakers (stage monitoring) and line array + subwoofer system (audience coverage), realizing bidirectional audio coverage.
(4)Power Management: Sequencer supplies power in preset order for safe startup and reduced electromagnetic interference.
3.Application Scenarios and Technical Advantages
(1) Application Scenarios
Performances: Concerts, speeches, weddings. High fidelity sound and large space coverage (10–50m coverage with SPL variation ≤±3dB).
VQ Series Active Line Array System – Small & Medium Performance Solution
This system achieves professional sound quality, flexible scenario adaptability and high stability through full-link optimization from signal source, processing, amplification to sound output.It is a portable solution from Theater Sound Technology Co., LTD designed for small and medium scale performances.Its core advantages lie in line array sound field control and bidirectional audio coverage (audience + performers), meeting sound reinforcement demands from small medium events to large venues.
1.System Architecture and Equipment Composition
(1)Signal Sources
Computer: Provides multimedia audio signals (music, video audio, etc.) and inputs to the 16 channel mixer via signal cables (red).
Handheld wireless microphones (2 sets): Capture vocal signals, transmit wirelessly, and input to the mixer via signal cables (red). Support mobile speaking such as hosting and interactive sessions.
(2) Audio Processing Equipment
16 channel mixer: Core mixing equipment. Adjusts volume, equalization and sound image positioning for multiple input signals (computer, microphones, etc.), realizing signal mixing and preliminary optimization.
2 in 4 out processor: Further processes audio including digital effects, feedback suppression and crossover control, improving sound stability and uniformity before output to amplifiers.
(3) Power Amplification and Sound Production Equipment
2 channel power amplifier: Amplifies audio signals from the processor to drive loudspeakers, ensuring sufficient level for large space sound reinforcement.
12 inch monitor loudspeakers (×2): Installed near the stage to provide clear audio feedback (accompaniment, vocal monitoring) for performers, improving performance accuracy.
6 inch line array loudspeakers + active subwoofers (2 sets):
Line array loudspeakers: Adopt 6 inch drivers. Vertical array design delivers long distance sound coverage with high directivity and even SPL decay, ideal for mid high vocal and music reproduction.
Active subwoofers: Enhance low frequency impact (drums, bass) and musical atmosphere, forming full band coverage with line arrays for performances and events.
(4) Power Management
Power sequencer: Connects equipment via power cables (black) for orderly power on/off to avoid surge damage. Provides overload protection and improves system stability.
2.Signal Transmission Path
(1) Signal Input: Signals from computer and microphones are routed to the mixer for multi channel mixing.
(2) Signal Processing: Mixer output is sent to the processor for digital audio optimization (noise reduction, gain control, sound field calibration), then to amplifiers.
(3) Power Amplification & Output: Amplified signals drive monitor loudspeakers (stage monitoring) and line array + subwoofer system (audience coverage), realizing bidirectional audio coverage.
(4)Power Management: Sequencer supplies power in preset order for safe startup and reduced electromagnetic interference.
3.Application Scenarios and Technical Advantages
(1) Application Scenarios
Performances: Concerts, speeches, weddings. High fidelity sound and large space coverage (10–50m coverage with SPL variation ≤±3dB).
Conferences & Training: Large conference rooms, lecture halls. Monitors for speakers, line arrays for rear audiences, improving communication efficiency.
Commercial Venues: Bars, banquet halls. Active subs enhance atmosphere; line arrays precisely cover targeted zones.
(2) Technical Advantages
Modular design: Flexible combination of microphones and loudspeaker arrays to adapt to different spaces.
Professional sound quality: Vertical directivity control reduces reflection and improves speech intelligibility (STI ≥ 0.75). Active subwoofer extends to 40Hz for strong dynamics.
Stability: Power sequencer and professional cables ensure signal loss ≤1% and greatly reduce failure rate.
4.Cable and Installation Specifications
Signal cables (red): Transmit low level audio with shielded anti interference (balanced XLR). Length ≤10m for pure sound.
Speaker cables (blue): Transmit high power signals with large cross section to reduce resistance. Speakon connectors for safety. Attenuation ≤0.5dB at ≤30m.
Power cables (black): Independent power supply from sequencer to avoid crosstalk. Ground resistance ≤4Ω for safety.
