Public Broadcasting System campus radio amplifier background music Amplifier 120W constant pressure amplifier 3 partitions 3 ..

Value Oh! Regular products. Three partitions merger constant pressure amplifier! Have a physical store invoices http://ruikangdq.taobao.com this amplifier freight borne by the buyer to pay the freight. Because the buyers shipping address different shipping will not be unified, specific freight shipping to determine how much the buyer's location . You can only write free shipping. Please Amoy Friends of understanding! If in doubt, see (shop description) with us and Product Name: Constant pressure amplifier DA120 property: Rated output power: DA120: 120W Audio output type: fixed resistance 4-16Ω constant pressure 70V; 110V three partitions output (SP1 -SP3) Frequency response: 40Hz-18KHz ± 0.5dB total harmonic distortion: <0.2% (at rated output power) SNR: Microphone section> 70dB, line section> 76dB Power supply voltage: AC200V ± 10% 50Hz-60Hz volume : 480 * 370 * 88mm (10kg) I. Performance introduction: DA series amplifiers all with reliable power output short circuit overload protection device when short circuit occurs outside partial short circuit and overload due to excessive impedance input signal.... It does not match (such as access to high-impedance output of the low-impedance load) caused by overload yes. That is automatically cut off the output, check the cause of the malfunction, and alarm signal (PROT indicator blinks constantly). At this point, you should first turn off the power switch and check the cause, until the fault is cleared, and then turn on the power switch. DA series are with preamplifier, with three mic inputs, including one with a microphone mute function, two-way line auxiliary input, which can be accessed CD. Tuner. Recording deck and so on. Microphone and line level independently adjustable. Yet all the way to the line output can be used for recording or bonded to other amplifiers. The machine has a unified volume control, the output can also be easily adjusted tone. DA series has three partitions, you can easily control every area, improve usability. Second, the use Notes: 1. The machine is a Class 1 appliances, when used shells and possible connection with the earth, in order to prevent electric shock. 2. Microphone gain adjustment knob small to large, slowly smoothing adjustment. 3. Use 220V ± 10% .50Hz-60H AC power supply. 4. Do not block the vents, so as not to affect the cooling effect. 5. Avoid unnecessary load short circuit. 6. If the machine appears abnormal, non-professionals do not open the machine for maintenance, in order to avoid electrical shock. Automatic Broadcasting System Installation Guide Note: This power amplifier controlled by the broadcaster, after the connection is directly connected to pagers; 2, the sound signal direction: pagers → amplifier SP1-SP3 → frets and speakers, so the power supply wiring → pagers, pager signal to the amplifier after amplification and then sent to fret and speakers in order to achieve the function broadcasting system; (SP1-SP3 four area control horn, the first three buttons corresponding to the power amplifier control different areas, Play independence classrooms and playgrounds, grade and between grades.) 3, MIC indicates microphone, microphone amplifier has an output of 3-way, wireless microphone convenience Gala, flag. 4, rain frets, wall speaker amplifier will be connected to the audio outputs COM and SP1-SP4. PA → frets: "-" pole connected to the amplifier "COM"; "+" then the amplifier "SP1-SP3" amplifier → tweeter :: "-" pole connected to the amplifier "COM"; "+" then the amplifier "4-16Ω "speaker should be directed downward 5, frets installation. 6, the broadcast wire must be copper wire, specifications 0.5m2 more.