Foshan Xinghongde Technology Co., Ltd.
Focus Us On
DOWNLOAD

Audio Preamplifier with Chime Tone

※ Aluminium alloy panel with standard 19" 2U height.

※ Built-in CHIME & SIREN circuitry.

※ 5 MIC inputs, 3 AUX inputs, 2 EMC input,4 AUX outputs.

※ Individual volume controller for MIC & AUX inputs.

※ MASTER volume controller ,BASS and TREBLE tone controller.

※ EMC1,2 have priority over all inputs except MIC1.

 

  • Description
  • Specification
The high power audio amplifier is used in the last stage of the transmitter, which is used to amplify the frequency of the high frequency modulated wave signal to satisfy the request of the transmission power, and then radiate it into the space through the antenna, which ensures that the receiver can receive the satisfactory signal electrical level in a certain area, and does not interfere with the communication of the adjacent channels.

High power audio amplifier is an important component of the transmitting device in communication system. It is divided into narrow band high power frequency amplifier and wide band high power frequency amplifier according to the bandwidth of its working band. Narrow band high power frequency amplifier usually uses frequency selective circuit that can select frequency and filter the waves as output circuit, so it is also called tuned power amplifier or resonant power amplifier. And the output circuit of wide band high power frequency amplifier is the transmission line transformer or other broadband matching circuit, so it is also called a non tuned power amplifier. High power audio amplifier is a kind of energy converter. It converts DC power supplied by power supply into high frequency AC output, which has been learned in the course of "low frequency electronic circuit". The amplifier can be divided into class A (conduction angle = 360°), class B (conduction angle = 180°), and class AB (conduction angle = 180°~360°) according to the difference of electrical current conduction angle.

RH-AUDIO PA Rack-mount Audio Preamplifier with Chime Tone is designed for background music/paging and public address system installations,these units are exceptional values, loaded with features,and are easy to install in a variety of system designs.

The PA Pre Amplifier supports power amplifiers to work, features muting function that MIC1 overrides MIC2,MIC3,AUX1,AUX2 with 0~30dB dB attenuation.

Built-in CHIME and SIREN circuitry with pushbutton on front panel.

Fire Alarm Connection: On the rear of the amplifier,there is a 'Priority' input for the direct connection of a fire alarm system.

This will mean when the fire alarm sounds,the amplifier and speakers will mute,ensuring an emergency evacuation can take place.


Front Panel Details:

RH-AUDIO Pre Amplifier front details


Rear Panel Details:

RH-AUDIO Pre Amplifier rear details


Reference Connection:

RH-AUDIO Pre Amplifier connection

Note:
• Built-in SIREN circuitry with pushbutton on front panel for an orderly emergency evacuation 
   of people and conducting a fire or an emergency drill manually. 
• Connecting Alam Panel for emergency broadcasting automaticlly. 
• Built-in CHIME circuitry with pushbutton on front panel for attracting listeners' attention prior to speaking.
• 4 signal outputs for connecting 4 units of power amplifiers.

 Model

 RH2811P

 MIC Input

 MIC 1,2,3,4,5: 18mV/600 ohms, Unbalanced

 AUX Input

 AUX 1,2,3: 200mV/10k ohms, Unbalanced

 EMC Input

 EMC 1,2: 1.5V/10k ohms, Unbalanced

 Tone

 BASS:±10dB at 100Hz,TREBLE:±10dB at 10KHz

 Frequency Response

 20Hz - 20KHz

 S/N Ratio

 MIC 1,2: 70dB; AUX 1,2,3: 80dB

 THD

 Less than 0.1%

 Muting Function

 MIC 1 overrides other input signals with 0-30 dB attenuation,EMC1,2 overrides all inputs except MIC1

 LED Indicators

 POWER

 Protection

 AC fuse

 Power Requirements

 Optional

 Power Consumption

 50W

 Dimensions (W×D×H)

 483(W)×366(D)×89(H)mm

 Packing Size

 185(H)×520(W)×435(D)mm

 Net Weight

 6Kg

 Gross Weight

 7.8Kg

Related Products
  • 20W Waterproof Landscape Speaker RH-S51

    20W Waterproof Landscape Speaker RH-S51

    January 9, 2018The RH-AUDIO 20W Waterproof Landscape Speaker RH-S51 delivers excellent over a wide listening area, an excellent choice for indoor if you prefer not to mount speakers to your home, and also for outdoo...view
  • MP3 FM Bluetooth Digital Class-D Amplifier

    MP3 FM Bluetooth Digital Class-D Amplifier

    January 9, 2018These Bluetooth Mixing Amplifiers are designed as convenient solution for small to medium PA installations with USB/SD player,FM tuner and Bluetooth receiver in a compact housing.view
  • PA System Mixer Amplifier

    PA System Mixer Amplifier

    January 9, 2018The Audio Signal Mixing Amplifiers are designed for background music/paging and public address system installations,these units are exceptional values, and are easy to installview
Leave a Message Email Us

we will contact you within 24 hours.

chat
  • TEL:+86-13076829269
  • FAX:
  • EMAIL:info@rh-audio.net
  • ADDRESS:No. 603,Building 11,Zone 2,Wanyang Innovation Park,Huanglong Village,Beijiao Town,Shunde District,Foshan City,Guangdong Province,China.