Large broadcasting system comes with six district MP3 merger broadcast amplifier maximum power 700W

Features ■ small PA system ideal for optimal cost control ■ Treble Bass, total volume and separate volume control ■ 2 microphone inputs, three auxiliary inputs, an auxiliary output ■ Microphone 1 has the highest priority mute function, automatic inhibit other Input signal ■ with six district select output, with bells and warning output ■ with output short circuit, overload, overheating and other protection and warning function ■ Pressure limiter circuit that limits the input signal is too large ■ transformer noise 70V, 100V constant pressure 4-16Ω output and fixed resistance output ■ Built-in MP3 player, can be inserted U disk to use, compatible with a variety of music formats performance parameters Model AT-60F AT-120F AT-180F AT-240F AT-300F AT-360F AT-500F AT -650F output power 60W 120W 180W 240W 300W 360W 500W 650W output 8 (Ω) impedance output set, 70V / 100V constant voltage output auxiliary output 600 ohms (Ω) / 1V (0dBV) microphone input 600 ohms (Ω) / 10mV ( -54dBV) unbalanced line inputs 10K ohms (Ω) / 250mV (-10dBV) unbalanced frequency response 60Hz-18KHz Distortion <0.1% at 1KHz, 1/3 rated power output SNR line: 70Db, microphone: 66dB tone range BASS: ± 10dB (100Hz), TREBLE: ± 10dB (10KHz) protection AC FUSE: DC VOLTAGE, OVERLOAD AND SHORT CIRCUIT Power AC220V-240V / 50-60HZ Fuse 5A 5A 8A 8A 10A 10A 12A 15A machine size 483 * 90 * 454mm 483 * 90 * 454mm Weight 11.5Kg 12.5Kg 13.5Kg 14.5Kg 15.5Kg 16.5Kg 18.5Kg 19.5Kg radio amplifier to buy a lot of people in the purchase of radio amplifier machines are considered: the greater the power amplifier and its power on The more abundant, more easily push the speaker, so the more likely to get good sound from a speaker (speakers) in. This view makes sense, because, after all, very low efficiency power amplifier, and make music weak signals without distortion play out from the speaker, the amplifier also must have enough reserve power. Large power amplifier is undoubtedly its own merits, but the power amplifier is not the bigger the better? This was taken into account various factors. On power, the relationship between the amplifier and speakers as generators and electrical loads, like, when the load is small, you simply use a super generator, which results in addition to increased costs, wasted outside, and not with to do any good. Besides the human ear can withstand the sound pressure is limited, and now the average family listening space is limited, so the purchase power amplifier, only the pursuit of power may seem one-sided. In terms of general households, using a well-designed with a 50W output power amplifier to promote the efficiency of 86dB more than one pair of speakers has been achieved the desired results. Amplifier in different areas of their sound is different. And people like the sound of voices and different, so if the price is basically the same, so that you achieve an output power of 100W and a common amplifier output power is only 50W but the sound quality you admire in line with requirements of quality amplifier to make a choice, then I suggest you chose a little small power station which is good. In addition, the optional power amplifier when there is an important indicator is the signal to noise ratio. SNR is the ratio of the amplitude of the signal amplitude and noise. Since this indicator is noise amplifier and the output is inversely proportional. Therefore SNR greater number of sites, it shows output noise amplifier smaller, the higher the quality. So when in the selection of the amplifier, of course, the bigger the better signal to noise ratio. But to understand the technical indicators signal to noise ratio, we must pay attention to whether the conditions after the number marked with an additional, if any, to be sure to understand clearly under what circumstances to reach this target, otherwise it is easy Some were fooled by the illusion. Many would like to install a public address system, but to find the device when it became a major problem, in the face of hundreds of public radio manufacturers, the company, there is no way to start, who to turn to supply it better, radium Shi broadcast talk On the view of a day, in line to see an urgent need public broadcasting equipment, ask where supply? I click into, in fact, do not go see, you already know the answer, it is a great opportunity to advertise, sure enough, there is a business of advertising. But also normal, considering from the consumer's point of view, this is the role of public broadcasting to provide equipment manufacturers, mainly in the relatively low quality of public broadcasting equipment in Zhejiang with Guangdong, Zhejiang, and many components are ignored, the cost of natural down , the price declined, in China, high-end products with low-end products there are people who buy, Zhejiang product is cheap, but still very hot, if you want to buy cheap public broadcasting equipment manufacturers in Guangdong, Zhejiang can find here public broadcasting equipment, particularly in Guangzhou most famous, well-known manufacturers basically in good Guangzhou, Guangzhou, quality, price is relatively high, public broadcasting equipment if the customer quality requirements more stringent, then the choice of the manufacturer Guangzhou Guangzhou Xiangyu electronic article Ltd. original, reproduced please indicate the source http://www.ls-pa.net