K210-A and KS28-A Loudspeaker Systems Deliver Captivating Sound for 5000-Person Concert in Kazakhstan

Professional audio solution for a 5,000-person music festival held in Kazakhstan in June 2025. We customized a combined system of 12 K210-A line array speakers and 4 KS28-A subwoofer speakers for the customer. With stable equipment performance, precise sound debugging, and a scientific deployment plan, we perfectly solved the pain points of uneven sound coverage and unstable long-term operation in outdoor music festivals, winning high recognition from the customer and providing a reference for similar outdoor performance audio projects.

Project Overview

Project Name: K210-A and KS28-A Loudspeaker Systems Deliver Captivating Sound for Concert in Kazakhstan

Location: Kazakhstan

Date: June 2025

Project Type: Concert (Music Festival, 5,000-person scale)

Equipment Used: 12 units of K210-A Line Array Speakers, 4 units of KS28-A Subwoofer Speakers, Professional DSP Processor

1. Project Background

In June 2025, a well-known event planning company in Kazakhstan collaborated with us to provide professional audio system support for the large-scale outdoor music festival it hosted. The music festival was held in an open outdoor venue in Kazakhstan, with a planned audience capacity of 5,000 people, covering diverse music genres such as pop, electronic, and folk, making it a highly influential cultural and entertainment event in the region.

The core pain points of this project were the open outdoor venue and the large span of the audience area. Traditional audio systems were prone to problems such as uneven sound coverage, severe sound attenuation in the far field, and insufficient low frequencies, which could not ensure that all 5,000 audience members could clearly hear the performance, seriously affecting the on-site experience. After comparing multiple options, the customer finally chose to cooperate with us. The core reasons were that we have rich experience in outdoor music festival audio services and can provide precise sound debugging services. In addition, the combined equipment of K210-A line array and KS28-A subwoofer has a good reputation in the industry for its high stability and high sound quality, which can perfectly match the core needs of this 5,000-person scale music festival. At the same time, our local service response speed and full-process technical support also became important factors for the customer to choose us.

2. Customer Needs

The core goal of this project was to provide a professional and stable audio solution for the 5,000-person outdoor music festival. The specific needs and challenges are as follows:

• Sound Coverage: Ensure uniform sound coverage in the outdoor 5,000-person audience area (from the front of the stage to the farthest area of the back row), with no blind spots or echoes, no obvious sound attenuation in the far field, clear intelligibility of human voices and musical instruments, speech intelligibility ≥ 95%, and adapt to the audio reproduction needs of diverse music genres.
• Equipment Stability: The music festival performance lasts for a long time, requiring the audio system to operate continuously at high power without faults or sound interruptions, adapt to complex outdoor environments, have a certain level of waterproof and dustproof capabilities, cope with outdoor temperature changes and environmental interference, and ensure the smooth progress of the entire performance.
• Debugging Adaptability: Be able to flexibly adjust audio parameters according to the outdoor venue's acoustic environment and performance genres (pop, electronic, folk, etc.), suppress howling and sound feedback, achieve an immersive auditory experience with transparent human voices and shocking low frequencies, and meet the performance needs of different artists.
• Efficient Implementation: Require a professional team to follow up the whole process to ensure the efficient advancement of the entire process of audio system survey, installation, debugging, and testing, complete the deployment on time without affecting the rehearsal and official performance schedule of the music festival, and provide on-site operation and maintenance support to handle sudden problems in a timely manner.

3. Our Solution

In response to the needs and outdoor venue pain points of this 5,000-person music festival in Kazakhstan, after precise survey and program demonstration, we finally determined to adopt the L-Solution line array combination scheme. With 12 K210-A line array speakers as the main sound reinforcement system, 4 KS28-A subwoofer speakers as the ultra-low sound supplement system, combined with professional DSP processors and customized DSP presets, and scientific venue deployment and debugging strategies, we comprehensively solved the problems of outdoor audio coverage and stability. The specific scheme is as follows:

• Equipment Combination: 12 K210-A line array speakers are used, hung in two groups on both sides of the stage, responsible for the coverage and reproduction of mid-to-high frequency sound in the entire venue; 4 KS28-A subwoofer speakers are arranged on the stage floor in an End-fire array layout, responsible for supplementing low-frequency energy and enhancing the on-site shocking feeling. The two work together to achieve balanced output of full-band sound and adapt to the needs of diverse music genres.
• DSP Preset Optimization: Combined with the acoustic characteristics of the outdoor venue and the distribution of the audience area, customized exclusive DSP preset parameters are formulated. Through EQ adjustment, delay calibration (≤10ms), limiter control and other functions, outdoor sound feedback and howling are suppressed, sound wave interference is eliminated, ensuring consistent sound phase and uniform coverage in the entire venue. At the same time, it matches the audio characteristics of different music genres, realizes accurate reproduction of human voices and musical instruments, so that there is no harsh feeling in the front row, no blurriness in the back row, and uniform listening experience in the entire venue.
• Venue Deployment Planning: According to the venue size and audience distribution, accurately calculate the hanging height (10-12 meters) and angle of the K210-A line array to ensure vertical coverage of the entire audience area; the KS28-A subwoofer speakers are placed in a cardioid mode to optimize low-frequency directivity, reduce turbulence and noise, improve low-frequency transmission distance and impact, and avoid acoustic blind spots in the venue, achieving 100% sound coverage of the audience area, and the effective outdoor coverage distance meets the venue needs.
• Redundancy Guarantee: Equipped with backup power amplifiers and signal transmission equipment, establish a full-link active-standby redundancy mechanism. A single point of failure will not affect the operation of the entire system. At the same time, a professional technical team is arranged to be on-site to provide operation and maintenance support throughout the process, ensuring the stable operation of the audio system during the performance, handling various sudden problems in a timely manner, and ensuring zero interruption and zero failure of the audio system during the entire performance.

4. Main Product Advantages

The K210-A line array speakers and KS28-A subwoofer speakers at the core of this project are cost-effective professional audio equipment specially developed by us for large-scale outdoor performances. The combination of the two perfectly meets the needs of the 5,000-person scale music festival, with the following core advantages:

(1) Advantages of K210-A Line Array Speakers

• Precise Coverage and Uniform Sound Field: Adopting a dual 10-inch unit design, the horizontal coverage angle reaches 120°, and the vertical coverage angle can be flexibly adjusted (5°-15°). Combined with wavefront coupling technology, the vertical direction is precise, which can achieve large-scale, dead-angle-free sound coverage, effectively solving the problem of uneven sound attenuation in outdoor venues. It ensures that every position in the 5,000-person audience area can hear clear and balanced sound, with no obvious attenuation of sound pressure in the far field, adapting to the sound reinforcement needs of open outdoor venues.
• Clear Sound Quality and High Reproduction: Adopting high-quality sound units and professional frequency division technology, the frequency response range is 60Hz-20KHz, and the sensitivity reaches 103dB/W·m. The mid-to-high frequency is transparent and delicate, and the details of human voices and musical instruments are accurately reproduced. It can perfectly adapt to diverse music genres such as pop, electronic, and folk, suppress sound feedback, avoid howling, and allow on-site audiences to obtain an immersive auditory experience, meeting the high sound quality needs of music festivals.
• Stable and Durable, Suitable for Outdoor Use: The cabinet is made of aviation-grade plates, and the surface is treated with high-strength gold sand paint, with IP65 waterproof and dustproof capabilities, which can adapt to complex outdoor environments such as outdoor temperature changes, dust, and slight precipitation; the industrial-grade hardware design has passed high and low temperature and anti-interference tests, and can operate at high power for a long time without faults or distortion, fully meeting the needs of continuous performances in music festivals, reducing equipment failure rate and maintenance costs, and improving performance stability.
• Easy Installation and Flexible Adaptation: Adopting a lightweight design, equipped with professional aluminum hanging devices, it is easy to install and disassemble. The hanging angle and quantity can be flexibly adjusted according to the venue size. It is not only suitable for this 5,000-person scale outdoor music festival, but also can be flexibly adapted to performance venues of different scales and types. The system adopts a modular design, and equipment can be added or reduced on demand to avoid redundant investment, with outstanding cost performance.

(2) Advantages of KS28-A Subwoofer Speakers

• Strong Low Frequency and Powerful Impact: Equipped with two high-stroke 18-inch direct radiating transducers, adopting a bass reflex adjusted cabinet design, the usable bandwidth is as low as 25Hz (-10dB), and the maximum sound pressure level reaches 143dB. The low frequency has a deep dive and sufficient strength, which can make up for the low-frequency shortcoming of the K210-A line array, enhance the shocking feeling of on-site music, especially suitable for performances of electronic, rock and other music genres, allowing the audience to feel a strong auditory impact and enhance the on-site atmosphere.
• Low Distortion and High Efficiency: The optimized L ventilation layer exhaust port design can greatly reduce cabinet vibration and end noise, and improve low-frequency output efficiency at the same time, ensuring that under high-power operation, the low-frequency sound is free of distortion and noise, with a clean and full tone. Working together with the K210-A line array, it achieves balanced output of full-band sound, improves the overall sound quality performance, and avoids low-frequency turbidity affecting the listening experience.

5. Implementation Process

To ensure the timely, efficient and stable implementation of the audio system, we set up a professional project team, strictly followed the standardized implementation process, followed up all links of the project throughout the process, and formulated a detailed implementation plan combined with the outdoor venue characteristics and the music festival time node. The specific process is as follows:

• Pre-survey and Plan Refinement (7 days before the performance): The project team arrived at the performance venue in Kazakhstan, conducted a comprehensive survey of the venue size, topography, and acoustic environment, accurately measured the span of the audience area, the stage position, and the distribution of surrounding obstacles. Combined with the survey data, the audio deployment plan was optimized, clarifying the hanging points of the K210-A line array, the placement position of the KS28-A subwoofer, and the direction of DSP parameter presets. At the same time, we confirmed the installation and construction conditions with the customer and the venue management party, avoided venue restrictions and potential safety hazards, and formed a detailed construction and debugging plan.
• Equipment Transportation and On-site Installation (3 days before the performance): Completed the inspection, packaging and transportation of 12 K210-A line array speakers, 4 KS28-A subwoofer speakers and supporting equipment in advance to ensure that the equipment is free of damage and faults; after arriving at the scene, the professional installation team quickly completed the line array hanging, subwoofer placement, power amplifier and DSP processor wiring and other work in accordance with the preset plan, strictly controlled the hanging safety and the standardization of line connection. After the installation, a comprehensive inspection of the equipment appearance and line connection was carried out to ensure compliance with the performance safety standards.
• System Debugging and Sound Check Calibration (2 days before the performance): The technical debugging team conducted a comprehensive debugging of the audio system according to the venue's acoustic characteristics and the needs of diverse music genres, including EQ adjustment, delay calibration, limiter setting, sound field coverage test, etc., tested the sound clarity and uniformity of the audience area point by point, optimized the DSP preset parameters, and suppressed howling and sound feedback; we invited customer representatives and music festival artists to conduct sound checks, adjusted the sound quality parameters according to the feedback, ensured transparent human voices and shocking low frequencies, adapted to the performance habits of different artists, until all the needs of the customer and artists were met.
• Rehearsal Cooperation and Operation and Maintenance Guarantee (1 day before the performance - end of the performance): Cooperated with the music festival rehearsal throughout the process, real-time monitored the operation status of the audio system, fine-tuned the parameters according to the sound feedback during the rehearsal to ensure the smooth progress of the rehearsal; during the performance, arranged a professional technical team to be on-site 24 hours a day, on duty throughout the process, real-time monitored the operation of the equipment, handled sudden faults in a timely manner, and at the same time did a good job in equipment heat dissipation and dustproof protection, ensuring zero interruption and zero failure of the audio system during the entire performance. After the performance, completed the equipment disassembly, inspection, packaging and return work in an orderly manner.

6. Project Achievements

The audio project of the 5,000-person scale music festival in Kazakhstan successfully completed all performance guarantee tasks with a scientific deployment plan, stable equipment performance and professional technical services. The specific achievements are as follows:

• Stable Equipment Operation: The audio system achieved continuous 5-hour high-power stable operation throughout the music festival, without any faults or sound interruptions, perfectly adapting to the complex outdoor environment and long-term performance needs, fully reflecting the high reliability of the K210-A line array and KS28-A subwoofer speakers.
• Qualified Sound Coverage: After professional debugging, the audio system achieved uniform sound coverage in the entire 5,000-person audience area, with no blind spots or echoes, no obvious sound attenuation in the far field, and clear intelligibility of human voices and musical instruments, fully meeting the sound quality needs of this music festival and bringing an immersive auditory experience to the on-site audience.
• Good Customer Feedback: The project was efficiently implemented throughout the process, perfectly solving the core pain points of uneven outdoor audio coverage and unstable equipment operation proposed by the customer, winning high recognition and satisfaction from the customer, and laying a solid foundation for long-term cooperation between the two parties.

Customer Testimonial

"The audio effect of this 5,000-person music festival in Kazakhstan exceeded our expectations! The combination of K210-A line array and KS28-A subwoofer perfectly solved the pain point of uneven sound coverage in outdoor venues. The audience in the entire venue could hear clear and transparent sound quality with a strong low-frequency impact, which was fully suitable for the performance needs of diverse music genres. What made us more satisfied was that the audio system operated continuously at high power for 5 hours without any faults. The professional team was efficient and professional throughout the process from pre-survey, installation and debugging to on-site operation and maintenance, perfectly ensuring the smooth progress of the music festival. Choosing your solution was a very correct decision, and we will continue to deepen cooperation in the future and look forward to working together to complete more high-quality performance projects!"