不少人在咨詢一個問題--可不可以用音響設備來建立公共廣播音響系統或相反呢？答案是可以的，但不一定是適宜的。下面
山東公共廣播音響廠家為您簡單講解一番。
Many people are asking whether professional audio equipment can be used to build a public address sound system or vice versa? The answer is yes, but it is not necessarily appropriate. The following is a brief explanation for you by Shandong public broadcasting audio manufacturers.
據此，2500W/4Ω的功放正好有100V的輸出電壓，可直接使用。但廣播音箱的總功率不能超過2500W（只考慮功放的負荷能力，未考慮有關規程的要求）；
Therefore, the 2500W / 4 Ω professional power amplifier has an output voltage of exactly 100V and can be used directly. However, the total power of the broadcast speaker shall not exceed 2500W (only the load capacity of the power amplifier is considered, and the requirements of relevant regulations are not considered);
另一方面，無論廣播音箱的總功率怎樣小，也不能選用功率小的功放，否則不能保證廣播線路應有的傳輸電壓。用兩臺650W/4Ω的功放橋接也可以得到接近100V的輸出電壓。
On the other hand, no matter how small the total power of the broadcast speaker is, the power amplifier with low power cannot be selected, otherwise the transmission voltage of the broadcast line cannot be guaranteed. With two 650W / 4 Ω professional power amplifiers, the output voltage of nearly 100V can also be obtained.
顯然，當廣播音箱的總功率遠小于2500W時，用上述辦法是很不劃算的。如果想使用與廣播音箱的總功率相當的功放，則應按上式計算出其輸出電壓，然后配接適當的輸出變壓器。
Obviously, when the total power of the broadcast speaker is far less than 2500 W, it is not cost-effective to use the above method. If you want to use a power amplifier equivalent to the total power of the broadcast speaker, you should calculate its output voltage according to the above formula, and then connect an appropriate output transformer.
音箱也可以當作廣播音箱使用，但須配接“線間變壓器”，如前所述，“線間變壓器”起阻抗變換的作用，使“定阻”的音箱能在“定壓”的廣播傳輸線路中吸取同自己的額定相當的功率。
Professional speakers can also be used as broadcast speakers, but they must be equipped with "line to line transformer". As mentioned above, the "line to line transformer" plays the role of impedance transformation, so that professional speakers with "constant resistance" can absorb power equivalent to their rated power in the "constant voltage" broadcast transmission line.
不用“線間變壓器”，把數個音箱適當地串并聯起來，也能使用，但須經過繁瑣的計算；而且在運行過程中，只要其中一只音箱損壞，系統就有可能顛覆（全部不響或燒毀其他音箱或燒毀功放）。
Instead of "line to line transformer", several professional speakers can be properly connected in series and parallel, but they can also be used, but they need to undergo cumbersome calculations; In addition, during operation, as long as one of the speakers is damaged, the system may be subverted (all of them will not sound or burn other speakers or power amplifiers).
用調音臺充當廣播前置放大器屬勉強可行，但調音臺通常沒有信號優先權排序，不便于實現廣播系統備的“強行插入”功能。
It is just feasible to use the mixing station as the broadcasting preamplifier, but the mixing station usually has no signal priority, which is not convenient to realize the "forced insertion" function of the broadcasting system.
反過來，廣播功放和廣播音箱也可以用于音響系統。但由于它們都有內置的輸出變壓器或線間變壓器，其頻響特性遠不如同檔次的功放好。
Conversely, broadcast amplifiers and speakers can also be used in professional audio systems. However, because they all have built-in output transformers or line to line transformers, their frequency response characteristics are far better than those of professional power amplifiers of the same grade.
廣播前置放大器用于音響系統也屬勉強，因為它沒有編組、均衡、效果等功能；而其優先排序功能對于音響系統來說，則多半是冗余的。
Broadcasting preamplifiers are also reluctant to be used in professional audio systems, because they have no functions such as grouping, equalization and effect; For professional audio systems, its prioritization function is mostly redundant.
所以說，互換公共廣播系統和音響系統的設備雖屬可行，但不一定是適宜的，通常肯定會導致性能比惡化。因此您對此問題有所了解了吧，更多有關信息獲取就來關注我們網站
http://www.zkvd.cn吧。
Therefore, although it is feasible to exchange the equipment of public address system and professional audio system, it is not necessarily appropriate, and it will certainly lead to deterioration of the performance price ratio. So you know something about this problem. For more information, please follow our website http://www.zkvd.cn Right.
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