JPS6313621B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an adjustment console, and more particularly to an adjustment console structure that can be used particularly effectively as an audio adjustment console in radio or television broadcasting.

In the studio of a broadcasting station, microphones are used for announcers, performers, onomatopoeia, accompanists, orchestra, etc. A plurality of these microphones are used not only for convenience of sound collection, but also for stereo sound collection. Additionally, a large number of microphones are used to effectively collect sounds from the announcer, host, narrator, performers, and orchestra. All of these microphone outputs are input to an audio adjustment console (hereinafter referred to as "sound console"). The console also has record and tape recorder outputs, and the number of these inputs varies depending on the size of the console, but a small console will have about 12 channels, and a large console will have over 32 channels. In addition to the above inputs, there are remote channels that connect inputs from remote locations, telephone channels that connect telephone calls from viewers, etc., and echo channels that connect inputs that have an echo effect.

Inside the console, these many inputs are
In the input circuit composed of a head amplifier and an input amplifier, the signal is amplified to the required level, the frequency characteristics are corrected by an equalizer, and the selected channels are mixed as necessary (hereinafter referred to as " (referred to as "mixing") is supplied to several group amplifiers, and the outputs of each group amplifier are appropriately combined and supplied to one or two master amplifiers. Each of the input group amplifier and master amplifier described above is provided with a volume adjuster, so that the output level can be freely adjusted individually, for each group, or for the whole. The master amplifier outputs the signal to the line that connects to the broadcasting machine, as well as to the tape recorder, monitor headphone, studio speaker, announcer speaker, audition speaker, and measurement circuit.

Furthermore, the echo signal that gives the echo effect can be obtained by, for example, branching the signal from before or after the volume adjuster of the group amplifier, amplifying it to a predetermined level using an echo amplifier, and providing the output signal separately from the sound console. The signal is delayed by an appropriate time using an echo machine or echo room, and the signal is added to the echo input circuit of the console and mixed into the original circuit. In addition to this, some sound desks have a solo amplifier that amplifies and outputs the branched signal in the same way as the echo signal, and can freely output the output as necessary.

An example of such a sound desk has an external appearance as shown in FIG. The illustrated sound console has an upper console 2 for operation and monitoring placed on a lower console 1 which is equipped with units, power supplies, etc. that do not require operation. The upper table 3 has an elbow rest 3 in front.
and then the first horizontal or gently sloped
It consists of an operating section 4, a second operating section 5 with an increased angle of inclination behind it, and a meter panel 6 with an almost vertical inclination at the top. Note that some conventional sound desks have a structure in which the second operation section 5 and the meter panel 6 are integrated. Frequently used modules are arranged in the first operating section, and modules that are less frequently used are arranged in the second operating section. The operator performs the operation while sitting on a chair and placing his or her legs under the first operating section.

Looking at the arrangement of the operation surfaces of the first and second operation sections, input modules 7 and 8 are arranged on the first operation section 4. The input modules 7 and 8 are a combination of a head amplifier and an input amplifier, and each has eight channels in the illustrated example. In addition to the low-level microphone input, the input module can optionally accept high-level tape recorder, record, and remote inputs. The 4-channel group module 9 is located in the first operating section 4, and the 2-channel master module 10 is located in the second operating section 5.
Furthermore, there is a module 11 equipped with various speakers, a monitor, a test oscillator frequency, a tape recorder changeover switch, and a volume adjuster, and an optional space 12 for accommodating various effect devices. A VU meter 13 is arranged on the meter panel 6 to indicate the output level of each circuit.

As described above, the sound desk is modularized for each channel. For example, a module has a plug-in structure in which the channel operation part is mounted on a long and narrow panel, while the amplifier and other circuit components are placed on a single printed circuit board and mounted almost at right angles to that panel. I was trying to insert them side by side. This module is made for each circuit such as each input circuit, group amplifier, master amplifier, echo amplifier, solo amplifier, etc.
For example, in a sound desk with eight microphone channels for performers as in the above-mentioned example, the number of modules is around 22. These modules are
Although their electrical configurations are different, their mechanical structures are the same. Next, an explanation will be given using an example of an input module, which is the most common type, is numerous in number, and has an electrically complex structure.

The input module incorporates a head amplifier and an input amplifier. The head amplifier is for normal microphone input, and the input level is -64dbs (level value with 1mW as 0db. In the case of a 600Ω line, the voltage at 0db is 0.77V), and it amplifies this to a predetermined level. . It also has a filter for removing low frequency interference components such as hum, an equalizer for correcting frequency versus amplitude, and a compressor for correcting linearity of input level versus output level. On the other hand, input amplifiers have
In addition to the input from the head amplifier, a -20 db input from a tape recorder or record is directly applied from the line and amplified. Also, with input amplifiers,
Phase inverter, microphone input or line input selector switch from the head amplifier, stereo output selector switch to switch between stereo left (L) output only, right (R) output only, or left and right output, stereo sound. A pan pot for left and right localization, a volume adjuster for adjusting the output level, a switch for selecting the front or rear of the volume adjuster in a circuit that branches from before or after the volume adjuster to an echo amplifier or solo amplifier, and a switch for selecting the front or rear of the volume adjuster in a circuit that branches from before or after the volume adjuster to an echo amplifier or solo amplifier. A selection switch, an audition branch circuit, and a changeover switch for each output circuit are mounted. An output circuit is provided for each group amplifier, each master amplifier, each echo amplifier, and each solo amplifier.

As explained earlier, the various selector switches and various regulators of the above circuit are mounted in a row on a long and narrow panel (e.g. approximately 40 mm wide and 300 mm to 500 mm long), and other parts are mounted on printed circuit boards perpendicular to the panel surface. attached to the board. A plug is attached to the printed circuit board, which is inserted into a socket installed inside the console's control panel. The structure of the sound table that receives such a module is the first one.
The depth of the part that receives the module from the operation surface is the same as the height of the printed wiring board of the module and the height of the connector. , the wiring space is deeper because it needs to be larger than the sum of the wiring spaces. In the illustrated example, the height of the printed circuit board of the module is 110 mm, while the difference between the height of the front edge of the first operating section and the height at the position of the lower console of the first operating section is 150 mm. . Also, since the input module has a large number of terminals, the plugs are also divided into two or three. Wiring between modules and other circuits can be done from the bottom by attaching the socket 14a and fixing the plate member 14b to the frame of the console, opening the bottom plate 14c of the console, or
There is a method in which a hinge is attached to the plate member to which the socket is attached so that it can be opened and closed freely, and the plate member is opened from the top of the table with the module removed.

This structure has the advantage that each circuit is well organized, so the wiring within the module can be shortened, and adjustments and inspections can be performed independently and efficiently using dedicated adjustment equipment and testing equipment. On the other hand, the following problems arise.

The first is that a guide rail is required to precisely limit the position of the module and table combination.
Even when assembled in this way, the desk is large, the modules are large, and the number of mounting is large.
When assembled, there will inevitably be misalignment between adjacent modules in the vertical direction of the panel surface, that is, in the vertical direction, and uneven spacing between module panels, so these gaps must be adjusted to make them even.
The so-called "chiriawase" is difficult. In order to make assembly easy, the dimensions of the module, the depth from the assembly position on the panel surface to the socket, the position of the module and the module mounting hole, and the assembly position of the plug and socket must be precisely matched. I need to be there. For this purpose, the module and each member related to its installation are made to have strength, and the module has a rigid structure with no deviation in dimensions.The module has guide pins,
It is necessary to take measures such as attaching guide rails to the parts of the table that the longitudinal part of the module comes into contact with, and to use special gauges when assembling the mounting parts of the module and the table. Even with this method, it is difficult to get the pieces to fit together simply by assembling them, so a great deal of effort is actually put into fitting them together.

The second problem is that it has poor adaptability to design changes. Users often require unique usability for sound desks, so the arrangement on the operation surface, such as the name plate, size, quantity, mounting position, and display method of the mounting parts on the module panel surface, etc. Modifications are often required, but regardless of such cosmetic changes, the modification requires a redesign of the entire module and corresponding changes to the sockets, etc. For this reason, there was a problem in that effective standardization was hindered and productivity was not increased.

Third, it is difficult to create external dimensions that will reduce operator fatigue. The height of the operating surface is ergonomically determined for Japanese people to be approximately 70 cm, but in a structure where the module is a plug-in type, the thickness of the operating surface is determined by the height of the module and the height of the socket, as mentioned above. Because of the height and the thickness of the wiring, it becomes difficult to put your legs under the control surface in a free position. Therefore, there was a problem that fatigue easily accumulated during long-time operations.

Therefore, the present invention aims to provide an adjustment console that fundamentally solves the problems described above.

That is, the first object of the present invention is to provide an adjustment table that does not require a complicated and strong structure that was unavoidable due to the conventional plug-in type module, and is free from the difficulties of assembly. It is.

A second object of the present invention is to provide an adjustment console in which the configuration of modules can be changed to minimize design changes due to specification changes by the orderer.

A third object of the present invention is to provide an adjustment console with a structure that reduces operator fatigue by reducing the thickness of the operation surface so that the legs can be easily placed under the operation surface. .

A fourth object of the present invention is to provide an adjustment console that facilitates standardization by separating parts that require design changes and parts that do not require design changes due to specification changes by the orderer.

A fifth object of the present invention is to provide an adjustment console whose electrical performance is stabilized and whose configuration is simplified by using the changeover switch and volume adjuster attached to the operation surface for direct current control.

Still another object of the present invention is to provide an adjustment console that has increased maintainability and facilitates inspection and repair.

That is, according to the present invention, in an adjustment console for adjusting signals of a plurality of channels, in which operation means are arranged for each channel on an operation surface,
Circuits through which signal current flows that are attached to at least some of the operating means on the operating surface corresponding to multiple channels are arranged separately from the operating surface, and furthermore, some of the operating means are arranged on the operating surface. They are attached together to the panel to be mounted, and the separately arranged circuits through which the signal current flows are controlled by a DC control method.

In a preferred embodiment of the present invention,
The operation surface is divided into two parts: a part that undergoes many design changes due to specification changes, and a part that undergoes few design changes, and the signal current flow circuits associated with the operation means corresponding to the parts that undergo many design changes are placed separately from the operation surface. Furthermore, some of the operating means are attached together to a panel mounted on the operating surface, so that the separately arranged circuits through which the signal current flows are controlled by a DC control system. Taking an audio adjustment console as a specific example, the input amplifier section of the head amplifier section and input amplifier section that constitute the input section of the audio adjustment console is separated from the operation surface and placed on the lower console. Then, the operation means of the input amplifier section is attached to the panel attached to the front of the operation surface,
The DC control system is used to control the separately arranged circuits through which the signal current flows. In this case, the head amplifier section may have a modular structure and be placed in a portion of the operating surface where design changes are less likely to occur.

By adopting this structure, all you need to do is attach connectors, etc. necessary for connecting parts necessary for operation and display to circuit parts such as amplifiers on the front panel of the operation surface. The thickness of the front part can be made thinner. In addition, the structure has become simpler, allowing sufficient strength and functionality to be achieved with fewer materials and parts, and allowing the operator to take a more comfortable posture. Furthermore, it is much easier to assemble the panel surface at the front of the operation unit compared to the modular structure. Furthermore, by dividing the input module into a head amplifier section and an input amplifier section, and dividing the latter into a control section and an amplification section,
It becomes easier to respond to design changes, promote standardization, and increase productivity. The reason for this is that since the orderer's specifications are mainly in the nameplate and arrangement of components on the panel surface of the input amplifier and group amplifier, everything other than the control section can be standardized. The head amplifier section and circuits placed at the rear of the control section such as the master amplifier can be left in the modular format, but even in this case, the length of the module has been shortened.
Since it can be divided into several blocks, there are almost no assembly problems compared to the case where a large number of large modules are mounted on the front of the operating section. The input amplifier was divided into a control section and a circuit section, but
Since the control unit performs direct current control, there is no deterioration in electrical performance such as hum or noise, increased crosstalk, or local oscillation.

An embodiment in which the present invention is implemented in an audio adjustment console will be described below with reference to FIG. 3 and subsequent figures of the accompanying drawings. Third
4 is a front view, FIG. 5 is a side view, and FIG. 6 is a vertical sectional view of the upper part of the audio adjustment console according to the present invention. FIG. 7 is a side view, and FIG. 7 is a schematic diagram of the entire surface of the operation panel.

As shown in the panel diagram of FIG. 7, the first operating section 4 in the front section has operating sections for frequently operated circuits, and in the center is an operating panel 9a for a 4-channel group amplifier. An operation panel 15 for an 8-channel input amplifier is disposed in each of the input amplifiers. Furthermore, at the left end of the first operation section 4, there are buttons for starting a tape recorder and a record.
An operation panel 16 equipped with a switch for stopping is placed, and a changeover panel 17 for a test oscillator, studio speaker, and announcer speaker is placed at the right end. The second operating section 5 at the rear is
It is divided into 5 sections facing the first operation section 4, with a master amplifier and main monitor switching panel 10 in the center, an 8-channel performer head amplifier module 19 on the left, and an announcer microphone with 8 channels on the right. , tape recorder, record,
Remote telephone, echo input module 2
0, a limiter compressor thermo module 18 and a nameplate panel 18a to be inserted if necessary are placed at the left end, and an echo and solo circuit module 21 and panel are placed at the left end. Furthermore, the printed circuit board 123 for frequently operated circuits, such as amplifiers for group amplifiers and input amplifiers, is housed on the shelf board of the lower desk as shown in FIGS. It is designed to be controlled from operation panels 9a and 15.

FIGS. 8 and 9 show typical circuit examples of a head amplifier and an input amplifier. A low level signal of about -64 dbs is normally input to the microphone input 22 of the head amplifier. However, when using a condenser microphone, switch 24 (S ₁ ) can be closed to supply 48V to the microphone. The microphone input is sent to an amplifier 27 via a transformer Tl and amplified. This amplification level is determined by the volume adjuster 28 (RV ₁ ).
Adjusted by. At this time, if the microphone output is high, turn switch 26 (S ₂ ) downward.
Insert a 20db pad (fixed attenuator) 25 to attenuate the signal. Next, a high frequency filter 29 removes harmful low frequency components as necessary. The cutoff frequency of this high frequency generator 29 is set by the regulator 30.
(RV ₂ ) can be varied from 20Hz to 240Hz. When it is not necessary to use the wave generator 29, the switch 31 (S ₃ ) is turned upward to disconnect the wave generator 29 from the circuit. Next, four equalizers 3
2 to 35 to adjust the frequency versus amplitude characteristics. The four equalizers cover the audio frequency band (20Hz~
20KHz) is divided into four, and the equalization effect is performed within each band.
(RV ₃ ), 37 (RV ₄ ), 38 (RV ₅ ), 39
(RV ₆ ).
When it is not necessary to perform equalization, switch 40
Switch (S ₄ ) upwards to disconnect the equalizer from the circuit.

In this way, the equalization-corrected audio signal is
The limiter suppresses excessive output and suppresses noise during silent periods. Various types of circuits have been proposed for use in this purpose, but in the illustrated embodiment, the degree of amplification is controlled by a control voltage.
A voltage controlled variable gain amplifier (Voltage Cantrolled Amplifier) 41 called VCA is used, the output voltage is input to a limiter 44, and the output voltage of the limiter is fed back to the VCA 41 as a control voltage. The regulator 45 (RV ₇ ) is used to set the threshold level at which amplitude limiting starts, and the regulator 46 (RV ₈ ) is used to set the threshold level when the amplitude-limited signal level returns to below the threshold level. This is used to set the release time of the amplitude limit. In addition,
Although not provided in the illustrated embodiment, when the level below the threshold suddenly rises,
The application time (Attack Time) of the amplitude limiting effect may be delayed, and an adjuster may be provided to set the attack time. The peak level of the output of the microphone is detected by the peak level detection circuit 48;
When the peak level exceeds a certain set level, the light emitting diode 49 (D ₁ ) is energized to emit light. The limit amount of the limiter is detected by a limit amount detection circuit 50, and is divided into four stages, and four light emitting diodes 51 are activated in accordance with the limit amount.
(D ₂ to _{D 5} ) are made to emit light. Switch 47 when you don't need to use the limiter.
(S ₆ ) can be opened to disconnect the limiter. In order to suppress the output of unpleasant noise during silence when there is no input signal, a noise detection circuit 42 is maintained at the input part of the VCA 41, and the noise detection circuit 42
detects the noise output, mixes it with the limiter output, and applies it to the control terminal of the VCA 41. When this noise suppression is not necessary, switch 43
(S ₅ ) to disconnect the noise detection circuit.

Therefore, on the panel surface 19 of each head amplifier,
Six switches S ₁ to _{S 6} , eight regulators RV ₁ to _{RV 8} , and five light emitting diodes D ₁ to _{D 5} are installed, and other parts are installed at right angles to the panel surface. It is assembled into a printed circuit board to form a module. The output level is -20db and is connected from terminal 52 to the next stage input amplifier.

As shown in FIG. 9, the input amplifier has a terminal 55 that receives the output of the head amplifier.
It has an L terminal 53 and an R terminal 54 as -20 db line inputs for tape recorders, records, remotes, telephones, etc. These inputs 53,5
4 and 55 pass through input transformers T2, T3, and T4, are further matched in phase by a phase inversion switch 56 ( _S7 ), and then sent to amplifiers 57, 58, and 59, where they are amplified. This phase inversion switch 56 is used to match the phases of the L and R stereo signals, and when you observe the waveform of the oscillograph or listen to the stereo sound and find that the phases are reversed, press this switch. Accordingly, the phase of either L or R (R in FIG. 5) is inverted to match the phase.

The signals amplified to a level of -10 db by the amplifiers 57, 58, and 59 are selected between line input and microphone input by a switch 60 ( _S8 ). The switch 61 (S ₉ ) is a switch for selecting only the L of the stereo signal, only the R, or both of the L and R. The amplitude of the signal selected in this way is adjusted by the fader 62, which adjusts the volume of the output signal. The volume adjuster of this fader is the most frequently used component, and conventionally a large adjuster with a linear slider is usually used. Fader output is pan pot 6
Connect to 3. The panpot moves the direction of arrival of the stereo sound from side to side.When set at the center, both L and R are attenuated by a small amount of equal amount, but when rotated to the L side, the L is attenuated by a small amount. The amount of attenuation decreases and the amount of attenuation on R increases, and as a result, the volume on the L side increases, giving the impression that the sound source has moved to the left. However, in the illustrated embodiment, the aforementioned VCA is used as the fader 62 and panpot 63 of the input amplifier, and the voltage of the control input thereof is controlled by a linear sliding regulator or a rotary regulator attached to the operation panel 15. Controlled by direct current.

After branching from before and after the fader 62 and mixing L and R, they are amplified by amplifiers 64 and 65, respectively, which are connected in parallel to switches 66 and 69, and one is selected and sent to echo circuits 67 and 69, respectively. It is connected to the solo circuit 70. The echo and solo circuits are equipped with a volume adjuster 68 (RV ₉ ) or 71 (RV ₁₀ ) to control the output level. However, the volume adjusters 68 and 71 are constructed of the above-mentioned VCA, and the control input voltage thereof is remotely controlled. Furthermore, there is a line branched from before the fader 62 for an audition circuit for previewing the input signal.

The output circuits include six circuits each branched from the L and R panpots 63, outputs G1 to G4 for group amplifiers, outputs M1 for master amplifiers,
Switches 72 to 77 ( _S10 to _S15 ) connecting M2
Furthermore, the outputs of the echo circuit 67 and the solo circuit 70 are provided with switches 78, 79 (S ₁₆ , S 17 ) and switches 78, 79 (S 16 , S ₁₇ ) which branch two circuits and connect them to the echo circuits E1, E2 and S1, S2. 80,
81 (S ₁₈ , S ₁₉ ), and switches 82 and 83 (S ₂₀ , ₂₁ ) for selecting either L or R are provided in the audition circuit, for a total of 18 circuits. The switches S7 to S21 including the switches S7 to S9 described above use, for example, FET switches as described later, and are further formed into a unit for each channel to form an amplifier section 123 as shown in FIGS. 4 and 5. It is placed on the shelf of the lower table 1.

Each of the two operation panels 15 of the input amplifier includes a conventional switch for remotely controlling FET switches S7 to S21, and a fader 62.
and panpot 63, and the same variable resistors as in the past for adjusting the control input voltage of the VCA used as the volume adjusters 68 and 71 of the echo circuit 67 and solo circuit 70, except that they are installed together for 8 channels. The switch and variable resistor are installed as shown in FIG. 6 in the same manner as before, and the FET switch and VCA are connected by electric wires such as flat cables through which only direct current flows. Figure 10 shows
This shows the circuit for remotely controlling VCA and FET switches using DC. The control section on the operation panel side consists of a switch and a volume adjuster that is a variable resistor, and the only difference is the combination of the switch's contacts and the type of the volume adjuster.
The same or similar circuit configuration as in FIG. 10 can be used for each circuit. In FIG. 10, the volume adjuster 102 attached to the operation panel has terminals at both ends connected to +15V and ground, and a center terminal connected to the VCA 105 via a DC amplifier 104.
is connected to the control terminal of the Volume adjuster 102
By moving the slider, the input voltage of the DC amplifier 104 changes between 0 and 15V, and the amplification degree of the VCA 105 can be changed to adjust the output level of the VCA 105. The switch 103 attached to the operation panel is an example of switching between two-wire lines, and includes a microphone and a line switch 60.
(S ₈ ) falls under this category. The switch common terminal is connected to ground in the amplifier section, and the other terminal is connected to two stages of DC amplifiers 106 and 107, whose respective outputs are applied to control terminals 109 and 111 of FET switch 108. When the switch 103 is in the open state, the DC amplifier 1
The output of DC amplifier 107 is positive, and the output of DC amplifier 107 is negative, and the polarity is reversed when the switch is closed. Since the FET switch is conductive, or closed, when the control voltage is positive, and non-conductive, or open, when the control voltage is negative, the switch 103
is open, between terminals 112 and 113 and 1
The terminals 10 and 114 are closed, and the terminals 110 and 115 and 112 and 116 are open. Therefore, the two wires of lines 117 and 118 are connected to lines 119 and 120, respectively. On the other hand, when switch 103 is closed, the control voltage of the FET switch is inverted, so terminals 112 and 113 and between 110 and 114 are opened, and terminals 110 and 114 are opened.
15 and between 112 and 116 are closed.
Therefore, lines 117 and 118 are line 1
21 and 122.

Similarly, the group amplifier section is divided into an amplification section and a control section (operation section), and the amplification section is arranged on a shelf in the lower table, and the operation means of the control section for four channels are attached to the panel 9a.

As a result of the above configuration, as can be seen from FIGS. 3 and 5, there are no upright printed circuit boards for amplifiers, etc. from the first operating section 4, and there are no switches, volume adjusters (variable resistors), display light emitting diodes, etc. Because of this structure, the thickness of the first operation part 4 can be changed to 120 mm, making it thinner than the conventional structure mentioned above, and allowing the operator to take a comfortable posture. The detailed structure of the first and second operation parts can be seen from FIG. Bottom surface 12 of first operation part I
4 and sides (not shown).
It is a shallow welded box with a simple structure that only has a ventilation hole in a part of the bottom, and there is no need to house electronic components. This structure is significantly simpler than the conventional structure shown in Figure 2, in which a module socket is attached to the bottom and wiring is done, and this is opened and closed from the top using a hinge, or the bottom plate is opened and closed. It can be seen that the number of sheet metal parts is reduced. The structure of the panel and the installation of parts can be seen in particular from FIGS. 6 and 7. Push button switches SOLOI lined up on the left and right,
ECHOI, G1, G2, M1, AUD1 and φ,
SOLO2, ElHO2, G2, G4, M2, AUD2
are each wired by a small printed circuit board 125. The connector socket 126 is
It is attached to a mounting bracket 127 attached to the panel 15. To assemble the control, insert the plug into the connector socket, bend the cable, and
Attach the panel 15 with the frame mounting bracket 128 using machine screws.
All you have to do is stop. As explained earlier, the box for the operating section is a shallow box-like structure with a simple welded structure, so it can be made sufficiently strong with a small amount of material and is not easily distorted. Therefore, by precisely machining the positions of the holes in the panels 9a15, 16, 17 and the mounting bracket 128, perfect alignment can be achieved with almost no adjustment. In comparison, in the case of a conventional input module with a length of 500 mm or more, the dimensions of the module, the vertical and horizontal positions of multiple sockets,
Due to the influence of the dimensions and distortion of the module mounting bracket and other opening members, it becomes difficult for the dust to fit together, which increases the adjustment effort.Furthermore, when the dimensional errors and distortions of the above-mentioned parts overlap in the same direction. ,
In some cases, adjustment may not be possible, resulting in significant damage to the quality of the product.

The module disposed in the second operation section 5 is a head amplifier module with a length of 240 mm, an echo,
The solo and limiter compressor thermomodules are, for example, 140 mm, which is half or one-third the size of the input module. Also, the head amplifier module is, for example, 250mm long, 320mm wide, and 210mm high.
It has a sturdy structure with a connector socket attached to a small frame, so it is easy to match the dimensions and is less likely to go out of order. Therefore, although it has a modular structure, it is relatively easy to assemble. Echo, Solo, and Limiter compressor thermomodules are smaller in number and shorter in length, making them easier to assemble.

As mentioned above, the input module is divided into two parts: the head amplifier and the input amplifier, and the input amplifier is further divided into a control part that only performs DC control and an amplifier part that handles audio signals, so that each part can be easily disconnected in the event of a failure. can be easily separated, making inspection easier. In addition, when repairing a fault, only the faulty part needs to be replaced with a spare part, so the total amount of spare parts is smaller compared to having spare parts for a large input module, and maintenance is reduced. I was able to reduce the burden.

As explained above, according to the present invention, it is possible to simplify the structure of the first operation section on the front of the sound desk, and to make it sufficiently strong and solid structure with less material, eliminating the need for a modular structure. This made it possible to assemble each circuit panel surface with almost no adjustment, significantly reducing the labor required for assembly. Furthermore, the thickness of the first operating section can be reduced, allowing the operator to work in a comfortable posture, which is effective in reducing fatigue. In addition, the parts that require design changes based on the customer's specifications are often the first operation part on the front side of the table for input amplifiers, group amplifiers, etc., but this part is separated from other parts and the module structure is changed to a panel structure. Because of the conversion, it became possible to easily deal with design changes, and therefore, it was possible to easily meet the customer's requests. Furthermore, as a result, input amplifiers and amplifier sections can be standardized, and productivity can be increased through mass production. In addition, the amplifier section is fully controlled by DC control.
Since it can be integrated into an IC, it is electrically stable and we were able to obtain good test results. In addition, the large input module is divided into a head amplifier section and an input amplifier section, and the input amplifier section is further divided into a control section and an operation section, making it easy to separate inspections and troubleshooting. Since only the damaged part needs to be replaced with a spare part, troubleshooting can be done easily and quickly, and the total amount of spare parts can be reduced, making it possible to significantly reduce the maintenance burden.

The present invention has been explained above using a sound desk as an example.
The present invention can be applied to any adjustment console that adjusts signals of multiple channels, in which operation means are arranged for each channel on the operation surface.
For example, it will be obvious to those skilled in the art that it can also be used for a video console, etc.

[Brief explanation of the drawing]

FIG. 1 is an external view showing the configuration of each part of a standard adjustment console, FIG. 2 is a cross-sectional configuration diagram of the operation section of the audio adjustment console shown in FIG. 1, and FIG. FIG. 4 is a front view, FIG. 5 is a side view, FIG. 6 is a side view of the operation panel of the input amplifier, and FIG. Figure 7 is a schematic diagram of the entire operation panel, Figure 8 is a system diagram of the head amplifier, Figure 9 is a system diagram of the input amplifier, and Figure 10 is a diagram of the system inside the input amplifier. This is a circuit that controls the amplifier using DC current. 1...lower table, 2...upper table, 3...elbow rest, 4...
First operating section, 5... Second operating section, 6... Meter box, 7, 8... Input module, 9... Croup amplifier module, 10... Master amplifier module, 11... Various circuit modules, 13...
VU meter, 14a...Socket, 14b...Mounting plate member, 14c...Bottom plate, 9a...Group amplifier panel, 15...Input amplifier panel, 16, 17
...Switching panel, 18...Limiter compressor thermo module, 19...Head amplifier module, 20...Input circuit module, 21...Echo, solo amplifier module.

Claims (1)

[Scope of Claims] 1. An adjustment console for adjusting signals of multiple channels, in which operating means are arranged for each channel on an operating surface, and corresponds to at least a plurality of channels among the operating means on the operating surface. A circuit through which a signal current flows, which is attached to a part of the control panel, is arranged separately from the operation surface, and the operation means of the part of the control panel is arranged separately from the operation surface.
A simple structure adjustment console that is attached to a panel attached to an operation surface and controls the separately arranged signal current flowing circuits using a DC control method. 2. The operation surface is divided into parts that undergo many design changes due to specification changes, etc. and parts that undergo few design changes, and the above-mentioned part of the operation means corresponds to the parts that undergo many design changes.
A simple structure adjustment console according to claim 1. 3. The adjustment console is an audio adjustment console, and the input amplifier section of the head amplifier section and the input amplifier section that constitute the input section of the audio adjustment console is separated from the operation surface and placed on the lower console, and The simple structure adjustment console according to claim 1 or 2, which is controlled by a DC control method by operating means attached to the panel.