The DVR has long been one of the mandatory attributes in a car. It helps to monitor the situation on the road, is able to resolve intractable situations, thanks to the recording function. Most modern models are equipped with an additional connector, which is necessary for the microphone. For proper connection, it is necessary to observe several rules for the selection and connection of both components.
We will figure out how to connect a microphone to the DVR.
How to choose a microphone
The choice of device is one of the main tasks. When buying, attention is paid to many criteria.
Radiation pattern
Of primary importance are not only the final dimensions, but also the radiation pattern. 
The most high-quality cardioid aggregates. Such a system creates a certain zone, in shape resembling a heart. Sounds emanating within this zone are completely recorded by the device.
Important! Please note that sounds emanating outside the zone are not recognized.
If it is impossible to place objects close to each other directional model. The diagram in this resembles a loop that can capture sounds at a much greater distance.
Sensitivity
When buying, you should also pay attention to such a parameter as sensitivity. The final indicators of at what maximum distance the device is capable of recording speech depend on it.
Among the devices you can find a microphone suitable for recording speech and sounds at a distance of several tens of meters. The best option for regular use is a microphone with a frequency of up to 8000 kHz.
Reference. When choosing household appliances for placement in a production room or specialized transport, it is recommended to select units with higher frequency indicators.
Cable suitable for connection
Of great importance when choosing a suitable cable. Experts recommend staying 
on combined coaxial products.
For laying over short distances (up to 300 meters) A thin combination cable is suitable, which is flexible and small in diameter. This model is ШВЭВ 3х0.12.
For higher area it is better to choose cables with a large cross section of at least 0.5 mm. A suitable model is KVK 2V 2x0.5 PVC.
The modern assortment is quite diverse, which allows you to choose other options. However, other models have a fairly narrow range - no more than 40 meters. Therefore, the use of such products will be quite impractical.
Tip. When laying the cable on the street, it is necessary to use special street options.
Step-by-step connection procedure
After acquiring all the necessary components, you can proceed with the connection process.
Connection steps
- Find the red wire on the microphone. It connects to the red wire of the coaxial cable itself.
- The central core of the wire is screwed to the yellow wire on the microphone.
- Two wires remain on the cable: common, power. They connect to the black core on the microphone.
- In conclusion, each connection is wrapped with electrical tape. At this stage, the connection directly from the microphone ends.
On the back of the cable are power wires. They are connected to the corresponding unit. Common and signal are connected to the components of the coaxial wire.
The final step is to connect directly to the DVR. For this, an RCA connector is used. It should be connected to the DVR using the audio input..
Sound playback requires not only a microphone, but also special speakers. They connect to the recorder itself. It should be noted that in order to make the connection, an adapter may be required.
After a few simple steps, the microphone is connected to the DVR and ready to go.
With the regular use of a personal vehicle, having a DVR is necessary. To improve the quality and additional protection, a large list of devices is used, including a microphone. This unit requires special actions when connecting. A few tips and tricks will help in the proper conduct of the procedure.
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