Pronunciation boxes have been set up in different styles to facilitate the need for sound testing. What is the usefulness of soundboxes, whose quality and quality are referred to as larynx in sound devices, directly affect the performance of the entire system. The variety of finished soundboxes currently sold on the market varies from low to low scores to high tens of thousands of dollars, and their quality is mixed. For electric sound experts or some of their fever-free friends, it is not difficult for them to deal with a pair of high-quality and low-priced hi-fi boxes, given their extensive experience and keen hearing. The vast majority of car acoustic lovers do not have the knowledge and experience to do so, and buy their own productions to a large extent only by following the advice of the distributors. So how do we fix a pair of hi-fi speakers with our own knowledge and experience? A few brief personal observations on this point (due to space constraints): the rest of you are invited to take the floor
I. Objective indicators
The hearing range of the person is in the range of 20 to 2000 ohz, but most people are in the range of 3018,000 hz, or even less, because of age and physical qualities. So the simple pursuit of high indicators is unnecessary. However, some indicators must be as good as possible. If the soundbox output is kept as flat as possible within a given frequency range, it is possible to restore the signals more realistically. The dynamic range must be large (restricted by the dynamic scope and sensitivity, and correspondingly smaller by the high sensitivity dynamics), and there is considerable empirical evidence that, with improved frequency responses and some other indicators, there is little difference in hearing, while a slight increase in the dynamic range is immediately and visibly improving. And then there's the soundbox re-laying the bandwidth wide enough and the transliteration is smaller。
Ii. Appearance identification
Proofbox loudspeakers shall be high-yielding loops such as foams, rubber rings or bursaries, and it is desirable for those who are in a position to do so to take off the loudspeaker and observe the balance of the loops to the light。
The speaker should preferably have a long run of the large magnet so that the use does not affect the impact of the exposure。
Both hands press the loudspeaker's sound basin repeatedly, listen to whether there is sand or not, and if there is any indication that the soundring is not in the right position, then remove it and press the box around with one hand around the centre of the loudspeaker, indicating that the soundring is very good。
When pressing the loudspeaker basin by hand, it is more demanding than other speakers of the same calibre, indicating that the loudspeaker is more dynamic and better performing for music. (hf speaker cannot press by hand)
The pronunciation panel should be at least 15 mm or more and must have solid internal sound absorbent material, which would otherwise seriously affect the sound quality。
Iii. Subjective testing
Now that the test box's indicators and materials are impeccable, all that remains is an audition, the selected track should have a wide, dynamic range, should not be too attractive, and must be familiar with it. The most efficient way to test is to compare it with a sound test box that's on top of the sound, and to compare the performance of the boxes purchased or made with the balance button of the work. In addition, if a friend who does not know the characteristics of his car acoustic equipment is not aware, the high frequency unit of the selected soundbox is recommended as a softball ceiling (the car speaker is widely used) to facilitate matching of equipment. It works better if it matches the df of the soundbox. For the music chief, the "crazy ears" should be selected for the three main blocks. Information on the test box for follow-up。
