KR100420164B1 - Public Address Controller consisted of Module Type - Google Patents

Abstract

PURPOSE: A module type public address control apparatus is provided to facilitate a cabling operation, simplify a cable connection and incur a low cost by making separable auxiliary elements modules and adding or removing them. CONSTITUTION: A main PCB(111) accommodates a main control module(111a) for selecting an output channel and outputting an audio broadcast signal. A cut-out portion(112) is formed by cutting out a portion of the side of a main body(110). A blank panel(114) has an engaging recess(114a) and coupled to the cut-out portion(112) by a screw(130). A panel member(121) has an engaging has an engaging recess(121a) formed at a position corresponding to a coupling recess(113) so as to be coupled to a portion formed by removing a blank panel(114). A sub PCB(122) includes a dividing processing module(122a). An interface(123) connects the dividing processing module(122a) to the main control module(111a). One end of a connector(124) is connected to the interface(123) and the other end thereof is connected to the main PCB(111) so that the main control module(111a) and the dividing processing module(122a) can be connected for transmission of signals.

Description

Modular PA system {Public Address Controller consisted of Module Type}

The present invention relates to a modular PA system, which is modularized by a function that can be separated from the main device controlling the PA of the PA system, so that the module can be added or removed in the device as needed. Relates to a device.

PA system is a multi-purpose broadcasting system used for announcements and music broadcasting for public facilities such as schools, businesses, buildings, and apartments.

The PA system includes a sound source generator, a PA system, an audio matrix, a power amplifier, and a relay group.

The sound source generator is a device for generating a sound source such as a CD player, a cassette deck, a tuner, a wireless microphone, a microphone, a remote amplifier, and the like. to be.

The PA system performs an input / output channel control, a volume control, and a selective control of an output speaker for the sound source generated by the sound source generator and outputs the same.

The audio matrix mixes and converts analog signals output from the PA system, and distributes them to digital signals for distribution.

The power amplifier amplifies and outputs each of the divided signals distributed by the audio matrix.

The relay group distributes the amplified signals output from the respective power amplifiers to the selected speakers according to the selection control of the output speaker of the PA control apparatus.

Accordingly, the analog sound source generated by the sound source generator is mixed and digitally converted through the audio matrix according to the control operation of the PA control apparatus, amplified by the power amplifier, and then relayed. Outputs the selected speaker through the group.

The conventional public address control apparatus includes an accessory device having various functions, for example, a time signal processor for processing and outputting a time signal, a user recording processor for processing and outputting a user recording, and setting a broadcast schedule at a scheduled time. A macro broadcaster for setting a reserved broadcast processor for outputting a reserved broadcast, an alarm processor 124 for outputting an alarm sound when an alarm signal is received from the alarm system, and a macro key for macro operation and pressing the macro key when the macro key is pressed. The equipment such as the macro processor which processes the data is complicatedly connected, and the public address broadcasting was performed under the control of the PA system.

Therefore, in the related art, since the accessory devices had to be connected to the public address control apparatus, the cable connection was very complicated, and as the accessory devices were added, there was a problem such as requiring more accommodation space.

In order to solve this problem, in the 'modular PA system' filed by the applicant of the present invention by modularizing the accessory devices that can be separated from the PA system that is the main device that controls the public address of the PA system By adding or removing modules in the device as needed, it is more compact because no space for accommodating equipment is required. Simple and systematically tuned PA function according to user's demand, can be customized at low cost, and modular PA control can be reduced.

The present invention relates to the mechanical structure of the 'modular public address control device' patented to the same person by the present applicant, the invention has been developed for the same purpose as described above.

The present invention has been invented under the above-described purpose, and the modules can be modularized for each function, which can be separated from the PA system, which is a main device for controlling PA broadcasting of the PA system, so that modules can be added or removed in the device as needed. Its purpose is to provide a modular PA system.

According to an aspect of the present invention for achieving the above object, the modular PA system according to the present invention is a sound source including at least one or more of a CD player, cassette deck, tuner, wireless microphone, microphone, remote amplifier In the PA system comprising input / output channel control and volume control for L channel sound generated by the generator, and outputting to M channels by performing selective control of an output speaker. A main PCB containing a main control module for outputting an audio broadcast signal by selecting an output channel according to the broadcast control and the volume control according to the priority of the output channel, and a cutout formed by cutting at least one side thereof in a quadrangular shape; And a plurality of coupling grooves formed side by side at equal intervals in the upper and lower sides of the incision near the incision, and the incision part A main body having a plurality of blank panels which are joined but screwed to form fastening grooves at positions corresponding to the coupling grooves, respectively; A panel member having a fastening groove formed at a position corresponding to the coupling groove to remove the at least one blank panel and to be coupled to the removed portion, and being coupled to the panel member to fasten the panel member to the main body; A sub-PCB housed in the main PCB of the main PCB of the main body and a sub-processing module that is modularized according to a detachable function, an interface for connecting the divisional processing module with the main control module, and a connector connected thereto; It characterized in that it comprises at least one coupling panel comprising.

Therefore, by attaching modules that can be separated from the public address control apparatus, which is the main device for controlling public address broadcasting of the public address system, by modularizing functions by adding or removing modules in the device as necessary, more compact and cabling ( Cabling is simple, cable connection structure is simple, and customized public address equipment can be provided at low cost.

1 is a perspective view of a modular PA system according to the present invention

Figure 2 is a block diagram of an embodiment of a sub-PCB of the modular public address control apparatus according to the present invention, showing a case in which the split processing module included in the sub-PCB is a time signal processing module.

Figure 3 is a block diagram of an embodiment of a sub-PCB of the modular public address control apparatus according to the present invention, showing a case in which the split processing module included in the sub-PCB is a user recording processing module.

Figure 4 is a block diagram of an embodiment of a sub-PCB of the modular public address control apparatus according to the present invention, showing a case in which the split processing module included in the sub-PCB is a reserved broadcast processing module.

Figure 5 is a block diagram of an embodiment of a sub-PCB of the modular public address control apparatus according to the present invention, showing a case in which the split processing module included in the sub-PCB is an alarm processing module.

Figure 6 is a block diagram of an embodiment of a sub-PCB of the modular public address control apparatus according to the present invention, showing a case in which the split processing module included in the sub-PCB is a macro processing module.

7 is a block diagram of an embodiment of a sub-PCB of the modular PA control apparatus according to the present invention, which illustrates a case in which the split processing module included in the sub-PCB is a remote control processing module.

<Explanation of symbols for the main parts of the drawings>

100: modular PA system 110: main body

111: main PCB 111a: main control module

112: incision 113: coupling groove

114: blank panel 114a: fastening groove

120: coupling panel 121: panel member

121a: Fastening groove 122: Sub PCB

122a: Split processing module 123: Interface

124 connector 130 screw

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily understand and reproduce the present invention.

The detailed description of the block configuration of the modular PA system and the modular PA system to which the present invention is applied is described in detail in the present invention filed by the applicant of the same patent, and thus the detailed description thereof will be omitted. In the present invention, a coupling relationship between a main body constituting a modular public address control device and a coupling panel modularized and detachable to the main body is intended.

1 is a perspective view of a modular PA system according to the present invention.

Modular public address control apparatus according to the present invention for the L channel sound source generated in the sound source generating device (not shown) including at least one of a CD player, cassette deck, tuner, wireless microphone, microphone, remote amplifier Input / output channel control, volume control, and output speaker selection control are performed to output M channels.

As shown, the modular public address control apparatus 100 according to the present invention comprises a main body 110, and at least one coupling panel 120 that can be inserted into the main body.

The main body 110 includes a main PCB 111, a cutout 112, a plurality of coupling grooves 113, and a blank panel 114.

The main PCB 111 accommodates the main control module 111a for outputting an audio broadcast signal by selecting an output channel according to broadcast control and volume control according to the priority of input and output channels.

The main control module 111a includes a main control unit, an audio output control unit, a memory unit, and a front control unit, and is described in detail in the invention filed by the applicant of the present invention. Is omitted.

When executing the PA, the main controller reads the setting information stored in the memory unit. The main control unit controls the priority and broadcasting of input / output channels for sound sources generated from a sound source generator including at least one of a CD player, a cassette deck, a tuner, a wireless microphone, a microphone, and a remote amplifier according to the setting information. Volume control and signal selection of a speaker to be output are performed to output a broadcast signal. The audio output controller selects an output channel according to the broadcast signal from the main controller and outputs the output channel to the audio matrix. The audio matrix mixes and digitally converts the signal output from the audio output controller and outputs the power amplifier to the power amplifier. The power amplifier amplifies the output signal converted from the audio matrix and outputs the amplified signal to the relay group. The relay group outputs a signal amplified and output from the power amplifier to a speaker selected by the main controller.

The main control unit controls the front control unit so that the front control unit controls the I / O management information input / output. That is, the front controller performs key input control including the priority setting information input and the volume setting information input through the key manipulation unit and stores the key input control unit in the memory unit. In addition, the front control unit performs broadcast information output control through the LCD to display the currently performed broadcast situation to the manager. In addition, the front control unit performs the status information output control including displaying the operation state of the device through the LED to display the operation state of the PA equipment to the administrator.

The cutout 112 is a space formed by cutting a rectangular shape on at least one surface of the side surface of the main body 110. That is, a plurality of modular coupling panels 120 are coupled to the cutout 112.

The coupling groove 113 is a groove formed side by side at equal intervals in the upper and lower sides near the cut portion 112 of the surface where the cut portion 112 is formed. Therefore, when the coupling panel 120 is coupled to the main body 110, the coupling panel 120 is fixed to the main body 110 by assembling the screw 130 to the coupling groove 113.

The blank panel 114 is coupled to the cutout 112, respectively, to form a coupling groove 114a at a position corresponding to the coupling groove 113 so as to be coupled through the screw 130. Therefore, in a state in which the coupling panel 120 is not connected, a plurality of blank panels 114 may be connected to the cutout 112 cut at least on one surface of the main body 110 to protect the equipment.

On the other hand, when the coupling panel 120 is coupled to the main body 110, the blank panel 114 coupled to the screw 130 to the cutout 112 is appropriately removed, and the coupling panel ( After the 120 is inserted, the modular coupling panel 120 may be coupled to the main body 110 by coupling the coupling panel 120 to the coupling groove 113 using the screw 130.

The coupling panel 120 includes a panel member 121, a sub PCB 122, an interface 123, and a connector 124.

The panel member 121 has a fastening groove 121a formed at a position corresponding to the coupling groove 113 to remove at least one or more of the blank panels 114 and to be coupled to the removed portion. That is, when the coupling panel 120 is coupled to the main body 110, the blank panel 114 coupled with the screw 130 to the cutout 112 is appropriately removed, and the panel member 121 is disposed in the removed space. ) And then, when the screw 130 is coupled to the fastening groove 121a formed in the panel member 121 and the coupling groove 113 formed in the main body 110, the main body 110 is modularized. Coupling panel 120 is to be coupled. By doing so, it is possible to select and provide different combination panels 120 modularized according to functions according to the preferences of consumers.

The sub-PCB 122 is coupled to the panel member 121 to be received into the main body 110 when the panel member 121 is fastened to the main body 110, and the main PCB 111 of the main body 110 is connected to the sub-PCB 122. And the division processing module 122a modularized for each of the separable functions. Specific embodiments of the sub-PCB 122 will be described later.

The interface 123 connects the division processing module 122a with the main control module 111a. That is, the division processing module 122a is modularized for each separable function. However, since the division processing module 122a is integratedly controlled by the main control module 111a, the main PCB 111 is connected through the interface 123. The signal is relayed between the main control module 111a of the control panel) and the split processing module 122a of each sub-PCB 122.

One end of the connector 124 is connected to the interface 123, and the other end is connected to the main PCB 111 to divide the main control module 111a and the sub PCB 122 of the main PCB 111. 122a is connected to allow signal transmission.

Accordingly, the consumer can select and combine the combined panel 120 modularized for each function detachable to the main body 110 to provide a modular modular PA control device suitable for consumer preferences. When the coupling panel 120 is coupled to the 110, the blank panel 114 coupled to the cutout 112 of the main body 110 is removed, and the coupling panel selected by the consumer at the position where the blank panel 114 is removed. Insert the 120, the screw 130 is coupled to the coupling groove (121a) formed in the coupling panel 120 and the corresponding coupling groove 113 formed in the body 110 corresponding to the coupling to the main body 110 The panel 120 is coupled.

By doing so, the accessory devices detachable from the PA system, which is the main device for controlling PA broadcasting of the PA system, can be modularized for each function to add or remove modules in the device as necessary.

Figure 2 is a block diagram of an embodiment of a sub-PCB of the modular public address control apparatus according to the present invention, a diagram showing a case in which the split processing module included in the sub-PCB is a time signal processing module.

As shown in the figure, the sub-PCB 122 according to this embodiment includes a memory unit 210 and a time signal processing unit 220.

The memory unit 210 stores time signals.

The time signal processing unit 220 reads out and outputs the time signal from the memory unit 210 according to the time signal output command including the time signal selection information from the main PCB 111.

Accordingly, the main control unit of the main PCB 111 is a key control unit (not shown in the figure) of the modular PA system or a management computer (not shown in the drawings) that is network-connected with the modular PA system 100. When transmitting a command signal output including the time signal selection information and speaker selection information to the time signal processing module according to the setting information set through the management program for controlling the public address system, the time signal processing unit 220 Reads the corresponding time signal from the memory unit 210 or the memory unit (not shown in the figure) of the modular public address control apparatus 100 and is connected to each output channel to an output terminal of the audio output control unit of the modular public address system. The time signal is output through the output stage selected among the output stages. Therefore, this output time signal is output to the corresponding external speaker (not shown) through the audio matrix (not shown), the power amplifier (not shown), and the relay group (not shown).

Detailed description of the components constituting the public address system `` not shown '' in the detailed description of the present invention, such as the management computer, audio matrix, power amplifier, relay group, speaker, etc. are filed by the present applicant with the same patent Since it is described in detail in the present invention, a detailed description thereof will be omitted.

3 is a block diagram of an embodiment of a sub-PCB of the modular PA control apparatus according to the present invention, which illustrates a case in which the split processing module included in the sub-PCB is a user recording processing module.

As shown in the figure, the sub-PCB 122 according to this embodiment includes a memory unit 310, a recording processing unit 320, and a user voice output unit 330.

The memory unit 310 stores the voice recorded by the user.

The recording processor 320 stores and records the user voice input from an external sound source generator (not shown) in the memory unit 310 according to a user recording command from the main PCB 111.

The user voice output unit 330 reads and outputs a user voice from the memory unit 310 according to a user voice output command from the main PCB 111.

Accordingly, the main control unit of the main PCB 111 is a key control unit (not shown in the figure) of the modular PA system or a management computer (not shown in the drawings) that is network-connected with the modular PA system 100. When transmitting a user recording command to the user recording processing module through a management program for controlling the public address system running in the), the recording processing unit 320 is a wireless microphone or a microphone or an external sound generator (not shown) A user's voice input from a mite connected to a ute amplifier or other management computer is recorded and stored in the memory unit 310.

On the other hand, the main control unit of the main PCB 111 is a key control unit (not shown in the figure) of the modular PA system or a management computer that is network-connected with the modular PA system 100 (not shown) When the user voice output command is transmitted to the user recording processing module through a management program for controlling the public address system executed in the), the user voice output unit 330 reads the corresponding user voice stored in the memory unit 310. Then, the user's voice is output through the selected output terminal connected to each output channel to the output terminal of the audio output control unit of the modular PA system. Accordingly, the output user voice is output to the corresponding external speaker (not shown) through the audio matrix (not shown), the power amplifier (not shown), and the relay group (not shown).

Figure 4 is a block diagram of an embodiment of a sub-PCB of the modular public address control apparatus according to the present invention, a diagram showing a case in which the split processing module included in the sub-PCB is a reserved broadcast processing module.

As shown in the figure, the sub-PCB 122 according to this embodiment includes a memory unit 410, a real time clock 420, and a reserved broadcast processing unit 430.

The memory unit 410 stores reserved broadcast setting information including a broadcast start time, a broadcast end time, a broadcast area, a volume size, and a sound source to be broadcast.

The real time clock 420 counts time.

The reserved broadcasting processing unit 430 receives the reserved broadcasting setting information set by the user from the main PCB 111 and stores it in the memory unit 410, and counts the time through the real time clock 420. When the broadcast start time included in the reserved broadcast setting information is reached, the reserved broadcast process is performed according to the reserved broadcast setting information stored in the memory unit 410.

Accordingly, the main control unit of the main PCB 111 is a key control unit (not shown in the figure) of the modular PA system or a management computer (not shown in the drawings) that is network-connected with the modular PA system 100. When the reserved broadcasting setting information is transmitted to the reserved broadcasting processing module through a management program for controlling the PA system, the reserved broadcasting processing unit 430 receives it and stores it in the memory unit 410. When the broadcast start time included in the reserved broadcast setting information is reached by counting a time through the real time clock 420, the reserved broadcast processing unit 430 reads out the reserved broadcast setting information from the memory unit 410. Outputs the reserved broadcast set in the reserved broadcast setting information. Therefore, this output reserved broadcast is output to the corresponding external speaker (not shown) through an audio matrix (not shown), a power amplifier (not shown), and a relay group (not shown). In this case, the sound source to be included in the reserved broadcast setting information is audio data stored in the memory unit 410 or a memory unit (not shown) of the modular PA system 100 or the external sound source is generated. Sound source generated by the device (not shown).

FIG. 5 is a block diagram of an embodiment of a sub-PCB of the modular PA control apparatus according to the present invention, and illustrates a case in which the split processing module included in the sub-PCB is an alarm processing module.

As shown in the figure, the sub-PCB 122 according to this embodiment includes a memory unit 510, a receiver 520, and an alarm processor 530.

The memory unit 510 stores an alarm message and alarm area voice information.

The receiver 520 receives an alarm signal from an alarm system (not shown) including a fire receiver.

The alarm processor 530 detects an alarm zone from an alarm signal received through the receiver 520, reads an alarm message and corresponding alarm zone voice information from the memory unit 510, and synthesizes the alarm zone and outputs an alarm voice. do.

Therefore, when an alarm signal is received from the alarm system including the fire receiving panel through the receiving unit 520, the alarm processing unit 530 detects an alarm zone from the received alarm signal, and an alarm message from the memory unit 510. And read out the voice information of the corresponding alarm zone and synthesize it.The alarm voice is connected to each output channel of the audio output control unit of the modular PA system. The output is output through the selected output. Therefore, this output alarm sound is outputted to each external speaker (not shown) through an audio matrix (not shown), a power amplifier (not shown), and a relay group (not shown).

FIG. 6 is a block diagram of an embodiment of a sub-PCB of the modular public address control apparatus according to the present invention, and illustrates a case in which the segmentation processing module included in the sub-PCB is a macro processing module.

As shown in the figure, in this embodiment, a key operation portion 121b including a plurality of macro keys is formed on the panel member 121 of the coupling panel 120, and the sub-PCB 122 forms a memory portion ( 610 and a macro processor 620.

The memory unit 610 stores macro information corresponding to each of the macro keys of the key manipulation unit 121b.

The macro processor 620 receives macro information set by a user from the main PCB 111, stores the macro information in the memory unit 610, and responds to the corresponding macro key when the macro key is input through the key manipulation unit 121b. The macro information is read from the memory unit 610 and device control is executed according to the macro information.

The macro function is a function that allows one key operation to perform an operation set to this macro key (this operation may be one operation or a plurality of operations in which several operations are serialized).

Accordingly, the main control unit of the main PCB 111 is a key control unit (not shown in the figure) of the modular PA system or a management computer (not shown in the drawings) that is network-connected with the modular PA system 100. When the macro information set through the management program for controlling the public address broadcasting system to be executed to the macro processing module is transmitted to the macro processing module, the macro processing unit 620 receives it and stores it in the memory unit 610 and the key manipulation unit ( The macro processor 620 reads macro information corresponding to the macro key from the memory unit 610 according to the macro information when the macro key is input through the key operation unit of the front controller (not shown). Device control For example, a sound source is generated from a sound source generating device (not shown in the drawing) and the audio matrix is controlled under the control of the modular PA system 100. Executes a series of macro function is set as output to when omitted), and a power amplifier (figure not shown), and a relay group (not shown the drawings), an external speaker (not shown the drawings selected through).

7 is a block diagram of an embodiment of a sub-PCB of the modular PA control apparatus according to the present invention, which illustrates a case in which the split processing module included in the sub-PCB is a remote control processing module.

As shown in the figure, the sub-PCB 122 according to this embodiment includes a memory unit 710, a digitlink interface unit 720, and a remote control processing unit 730.

The memory unit 710 stores a control command corresponding to a remote control operation command of a remote control operable external sound source generator including the CD player, the cassette deck, and the tuner.

The digit link interface 720 interfaces a digit link terminal of the external sound source generator that can operate the remote controller.

The remote control processing unit 730 receives a control command manipulated by a user from the main PCB 111, retrieves a control command corresponding to the received control command from the memory unit 710, and transmits the control command to the retrieved control command. The corresponding remote control operation command is transmitted to the corresponding sound source generator through the digit link interface 720 to remotely control the corresponding sound source generator.

Accordingly, the main control unit of the main PCB 111 is a key control unit (not shown in the figure) of the modular PA system or a management computer (not shown in the drawings) that is network-connected with the modular PA system 100. By inputting and setting a control command corresponding to a remote control operation command of an external sound source generating device through a management program for controlling the public address system executed in the), and transmitting it to the remote control processing module, the remote control processing unit 730 Receives this, retrieves a control command corresponding to the received control command from the memory unit 710, and retrieves a remote control operation command corresponding to the retrieved control command to the corresponding sound source generating device through the digital link interface 720. Remote control of the sound source generator by transmitting. Therefore, the same operation as the remote control can be performed with respect to the external sound source generator through the remote control processing module.

By doing so, it is possible to achieve the object of the modular PA system according to the present invention.

As described above, the modular PA system according to the present invention modularizes accessory devices that can be separated from the PA system, which is a main device that controls PA broadcasting of the PA system, and adds modules to the device as needed. It is more compact because there is no need of accommodating space by attaching or removing it, and it is easy to cabling work by connecting the accessory inside without connecting it to the outside, and the cable connection structure is simple and according to the demand of the user. By simply and systematically modularizing public address function, it has a useful effect of providing customized public address equipment at low cost.

Although the present invention has been described with reference to the preferred embodiments described with reference to the accompanying drawings, it is not limited thereto and it will be apparent to those skilled in the art that various modifications may be derived therefrom. Therefore, the present invention should be construed by the claims intended to cover such modifications.

Claims (7)

Performs input / output channel control, volume control, and output speaker selection control for L channel sources generated from a sound source generator including at least one of a CD player, a cassette deck, a tuner, a wireless microphone, a microphone, and a remote amplifier. In the PA control apparatus comprising outputting to M channels, The PA control device is: A main PCB containing a main control module for outputting audio broadcast signals by selecting an output channel according to broadcast control and volume control according to the priority of input and output channels, and a cutout formed by cutting at least one side thereof in a quadrangular shape. And a plurality of coupling grooves formed side by side at equal intervals in the upper and lower sides of the incision portion and the cut surface formed thereon, and coupled to the cut portions to form a coupling groove at positions corresponding to the coupling grooves, respectively, to be screwed together. A body having a plurality of blank panels; A panel member having a fastening groove formed at a position corresponding to the coupling groove to remove the blank panel and being coupled to the removed portion, and coupled to the panel member to be received into the main body when the panel member is fastened to the main body; At least one coupling panel including a sub-PCB containing a modular processing module modularized by the main control module stored in the main PCB of the main body, and an interface connecting the division processing module with the main control module; ; Modular PA system including. The method of claim 1, Sub-PCB is coupled to the panel member of the coupling panel: A memory unit for storing time signals; A time signal processing unit for reading and outputting the time signal from the memory unit according to the time signal output command including the time signal selection information from the main PCB; Modular PA system comprising a. The method of claim 1, Sub-PCB is coupled to the panel member of the coupling panel: A memory unit for storing the voice recorded by the user; A recording processing unit for storing and recording a user voice input from an external sound source generator in accordance with a user recording command from the main PCB to the memory unit; A user voice output unit configured to read and output a user voice from the memory unit according to a user voice output command from the main PCB; Modular PA system comprising a. The method of claim 1, Sub-PCB is coupled to the panel member of the coupling panel: A memory unit for storing reserved broadcast setting information including a broadcast start time, a broadcast end time, a broadcast area, a volume size, and a sound source to be broadcast; A real time clock for counting time; Receive the reserved broadcasting setting information set by the user from the main PCB and store it in the memory unit, and count the time through the real time clock to store the broadcasting start time included in the reserved broadcasting setting information. A reserved broadcast processing unit for performing reserved broadcast processing according to the reserved broadcast setting information; Modular PA system comprising a. The method of claim 1, Sub-PCB is coupled to the panel member of the coupling panel: A memory unit for storing an alarm message and alarm area voice information; A receiver for receiving an alarm signal from an alarm system including a fire receiver; An alarm processor for detecting an alarm zone from the alarm signal received through the receiver, reading out an alarm message and corresponding alarm zone voice information from the memory unit, synthesizing the alarm message and the corresponding voice zone voice information; Modular PA system comprising a. The method of claim 1, Forming a key operating portion including a plurality of macro keys on the panel member of the coupling panel; Sub-PCB is coupled to the panel member of the coupling panel: A memory unit for storing macro information corresponding to each of the macro keys; Receive the macro information set by the user from the main PCB and store it in the memory unit, and when the macro key is input through the key manipulation unit, the macro information corresponding to the corresponding macro key is read out from the memory unit and the device is stored according to the macro information. A macro processor which executes control; Modular PA system comprising a. The method of claim 1, Sub-PCB is coupled to the panel member of the coupling panel: A memory unit for storing a control command corresponding to a remote control operation command of a remote control operable external sound source generator including the CD player, a cassette deck, and a tuner; A digital link interface unit which interfaces a digital link terminal of the external sound source generator operable by the remote controller; Receives a control command manipulated by the user from the main PCB, retrieves a control command corresponding to the received control command from the memory unit, and retrieves a remote control operation command corresponding to the retrieved control command through the digital link interface unit. A remote control processor for remotely controlling the sound source generator by transmitting to the generator; Modular PA system comprising a.