To measure the characteristics of acoustic systems, to compare them, to compare the results of changes made to the acoustics - you need a microphone for measurements. Of course, you can use a fairly expensive - special microphone with calibration curves. BUT, you can also get by with a simple - homemade microphone, which is quite suitable for comparative measurements and can serve as a starting point for your creativity. Assembly of such a microphone - shown in this video. For those who want to translate the text of the video into other languages, a file with the full text of the video is attached - for substitution in an electronic translator. The mail of the Channel "Unknown Physics" has changed. Now you can write letters to the address [email protected] (the old mail [email protected] also works - where it is available!) *** You can help develop the Channel: Yandex Money: https://yoomoney.ru/to/410013004521132 VISA (Russia) 4048-0250-0094-9167 This makes it possible to purchase the necessary electronic components for shooting videos according to your requests. Thank you for your help, friends! *** Video materials: https://drive.google.com/drive/folder... Video links: Frequency response of THIS microphone COMPARED to Behringer "Speaker repair and assembly" • Speaker repair and assembly "Microphone amplifier test" • Microphone amplifier test "Ageev amplifier 1987" • Ageev amplifier 1987 Playlists: "Microphone amplifiers" • Microphone amplifiers "Acoustic Systems" • Acoustic Systems 00:00 Welcome to the "Unknown Physics" channel! 00:05 Playlist of the "Acoustic Systems" channel. 00:21 Measurement microphone. 00:46 Comparative frequency responses of a loudspeaker. 01:15 Microphone capsules. 01:58 Audio frequency range. 02:06 Microphone amplifier circuits. 02:24 Selecting a microphone amplifier circuit. 02:59 Microphone amplifier circuit. 04:21 Parts for assembling a microphone amplifier circuit. 04:35 Assembled microphone amplifier circuit. 05:09 First test of the assembled microphone amplifier circuit. 05:34 Selecting an equivalent resistor. 06:28 Setting up the second stage of the amplifier. 07:02 NE5532 operational amplifier circuit. 07:31 Microphone amplifier circuit for testing. 07:38 Appearance of the tuned microphone amplifier. 07:46 First test – THD of the microphone amplifier. 09:02 Removing the frequency response of the microphone amplifier. 09:38 Amplified frequency range. 09:49 The tested Genius SP-G10 sound speaker. 10:29 THD test of the Genius SP-G10 sound speaker. 11:07 Measuring the frequency response of the Genius SP-G10 speaker. 12:26 Noise in a room with closed windows. 13:07 Installing a microphone amplifier in a case. 13:29 Microphone in a shielded case. 13:47 Frequency response of a microphone in a shielded case. 14:34 Appearance of the assembled Ageev amplifier. 15:12 Installing Ageev's amplifier in a case. 15:38 Review of Ageev's amplifier in a case. #Microphone_Amplifier #Acoustics_tests #Loudspeaker_Frequency_Response Videos in the form of short stories and tales about Physics in the world around us are released every week. If you liked the story - like it and subscribe to the channel so as not to miss the continuation! You can ask QUESTIONS in the comments to any video, on social networks and by email to the channel: [email protected] I will answer all SPECIFIC questions. I hope that your questions and joint answers will help make the channel "Unknown Physics" more interesting! ************************************************************* The channel has many playlists that contain videos about birds and animals, about HANDMADE, DIY, HUMOR, entertaining PHYSICS, stories about TRAVEL, YUMOR, TRIP-MAKING, how to make a cartoon and much more... You will definitely find a video that suits your interests! The CHANNEL NAVIGATOR will help you navigate the channel. LINKS to the channel's videos are posted on personal pages in social networks and in groups: Add yourself as a FRIEND! (When adding, PLEASE write - where are you from and on what issue) e-mail: [email protected] VKontakte: http://vk.com/afon2015 Odnoklassniki: https://goo.gl/VdSsCY Twitter: / afanasy83 Facebook: / afanasy83 Skype: afanasy83