Regarding the Quality Control of Hongzhi
2025-05-09
Regarding the Quality Control of Hongzhi
Some people believe that point source speakers produce better sound than line arrays
Line arrays are not suitable for places with low floors
Now, let's do a specific analysis
Regarding the quality control of speakers
The quality issues of speakers mainly manifest in two aspects, consistency and reliability.
The structure of a speaker is relatively simple, mainly composed of three parts: the box, the speaker unit, and the crossover network. The two quality issues mentioned above are mainly related to the production of the box and the quality control of the speaker unit and crossover network. Therefore, the quality control work of the speaker is relatively simple, selecting good materials and investing more manpower and time.
Passive quality control
Since its establishment in 1989, Hongzhi has attached great importance to quality control, implemented comprehensive quality control, and carried out rational design from the structural design to minimize the probability of problems. In addition, speakers are selected according to high specifications to ensure that the probability of damage is minimized.
Then, all speaker units and crossover networks undergo 100% QC inspection to ensure consistency after packaging. This is the most cumbersome, time-consuming, and effective passive quality control measure, and a more convenient method has not yet been found.
This was the QC room back then, responsible for conducting percentage testing on the acoustic and electrical aspects of speaker units and frequency divider networks
This is an anechoic chamber used for horn power testing
This is an anechoic chamber used for horn power testing
The newly developed speaker units undergo a long aging test before mass production to verify the rationality of the design.
The qualification standard for horn units is the coincidence of the entire set of curves, rather than the+-3db standard of most horn factories. According to this standard, one-third of the products will not meet Hongzhi's quality requirements, which forces our suppliers to improve their quality control standards to meet our quality requirements.
Completely overlapping crossover network curves
The curve QC of the finished speaker products will be stored in the archive for future reference for each batch of products
In addition to the necessary electrical controls, there are also many details to pay attention to during the assembly process. For example, here, each wire connected to the horn terminal is fixed by rolling tape to avoid detachment caused by shaking during transportation. However, this will increase a lot of work time and trouble
Like a frequency divider network, a spiral spring is wound around the root of the lead wire of the component and glued firmly with resin to avoid wire breakage caused by metal fatigue of the lead wire due to long-term vibration...
Hongzhi will not focus on superficial gimmicks, but will put effort into practical and useful aspects.
Proactive quality control
The percentage testing horn unit is a passive quality control.
Hongzhi also achieves active quality control by actively controlling the design and sound of the speaker unit.
Through reasonable design, the horn unit has good thermal stability and is not easily damaged, minimizing the probability of failure during operation and achieving stable operation.
When the speaker system produces the correct sound, it can better meet people's needs for sound, making them feel that the sound pressure is sufficient, and the feeling they hear is greater than the actual sound pressure, making it easier to hear the sound they need to hear. However, a poor system, although it can also output sound with a high sound pressure, does not produce as much sound as its actual output due to incorrect sound. This always makes people feel that the sound pressure is not enough and they cannot hear clearly, which can lead to people pushing the sound pressure up endlessly, causing the speaker system to overload and eventually burn out.
Hongzhi has always been committed to creating the right sound, achieving effective active quality control, and minimizing the risk of damage to the audio system.
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