JBL MA7100HP Owner's Manual

MA7100HP | MA9100HP Owner's Manual | rev1.3 20240612 Pg 20 of 45©2024 Harman International | Features, Specifications, and Appearance subject to change without notice.SPEAKER LEVELSFinally, the levels of all the speakers in the system need to be adjusted to match each other at the listening position to create aproper surround effect. To help with this, the Receiver can generate a test noise for each speaker which should be measuredwith a sound pressure level (SPL) meter. The meter should be set to ‘C’ weighting and slow response.Several smartphone/tablet apps are available which can also perform this function. The level of noise measured at the listeningposition from each speaker should be adjusted on the Speaker Levels page of the ‘Speaker Setup’ menu so that the meter reads75dB SPL. Adjust the main system volume of the Receiver before turning the test noise on, as the Speaker Level setting isbased on the overall level of the system for the duration of the speaker noise test.NOTE: Mobile phone apps are limited in accuracy unless an external microphone is used. Consult your dealer forrecommendations.There are several basic SPL meters on the market at reasonable prices aimed at home cinema enthusiasts. Check your localtechnology store, search online or ask your dealer.If you do not have an SPL meter or suitable app, you can try to adjust the noise level of each speaker by ear. In this case it isnot possible to adjust the speakers to the absolute 75dB SPL volume level, but you should aim for all speakers soundingequally loud. Setting speaker test noise levels by ear is not recommended as it is very difficult to do accurately.SPEAKER DISTANCESIt is essential for the distance from each speaker to the listening position to be accurately measured and entered into the‘Setup’ menu. This ensures that the sounds from the various speakers arrive at the listening position at the correct time torecreate a realistic surround effect. The distance can be entered in inches, centimeters, or milliseconds.