JBL LSR28P Technical & Service Manual
Also see for LSR28P: Owner's manual
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4OVERALLFREQUENCY RESPONSEThe frequency response of the output from the crossover system is shown in the figure below.AUDIO PRECISION & vs Crossover Response-30.00-25.00-20.00-15.00-10.00-5.0000.05.000010.000LEVEL(dBu) 2-CHAN(dBu)20 100 1k 10k 50kFREQ(Hz)When a system under test shows a different result in the frequency response test, as shownabove, using a +4dBu input signal to the XLR connector with no DIP switches selected, thesource of the error can be investigated by referring to the following sections located within thetroubleshooting guide. |
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