For Sale: A very rare Velleman AVM2050 Analogue Sound Level Meter plus microphone with lead used to calibrate a home cinema room as follows:
Calibrating the system To help you to set up your installation to give the best possible sound with any particular combination of associated equipment, the 861 Reference Digital Surround Controller includes a built-in calibration procedure. This calibration procedure uses test signals to present a series of sounds, which you use to adjust certain aspects of the system to their optimum settings. You should work through the calibration procedure the first time you set up your surround sound system, and whenever you want to check the calibration, such as after changing the layout of your room. Using the calibration procedure We recommend that you perform the calibration procedure using the Meridian System Remote and from the listening position. As you run the calibration procedure the name of each calibration test is shown on the front panel display, followed by the parameters adjusted in the test. If your Digital Surround Controller is fitted with a video card, and you have a video source connected, the on-screen display also provides additional text explaining what to do. Each calibration test uses a test signal designed to give the best results. Using a Sound Pressure Level meter Although you can perform the calibration procedure by ear, it is recommended that you perform the tests using a Sound Pressure Level meter, available fairly cheaply from Tandy/Radio Shack, or your Meridian dealer may be able to lend you one. Set the Sound Pressure Level meter to C weighted, and Slow. Take readings with the meter at the listening position, pointing vertically. You should hold the meter with an outstretched arm to minimise reflections from your body.
£100 or very near offer
Pease pm if interested and I will send images by whatsapp.
Thank you!
DSP8000USE, DSP5200HC, DSP33, DSW1500, 808v5, 861v4, WiiM Pro+, Panasonic 55" Plasma, DMP-BDT700 Blu-ray, MECOOL MEon1, Russ Andrews Signature Power Block, UltraFuses, SuperFuses, Kimber Signature PS Interfaces. Prior: DSP7000.2, DSP6000.2, DSP5000.2, DSP5000.2HC, 508.24, 568.2, 596, G98DH & G68D. Jaguar F-Type; Meridian 770W Surround System
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