nauc Posted July 21, 2020 Report Posted July 21, 2020 did you set your gain like JL recommends? .... deck 3/4 volume bass and treble = flat deck sub volume 3/4 crossovers off bass boost/loudness off 0 db 50hz tone for subs 0 db 1khz tone for mids/highs the correct test tones are at the bottom... https://jlaudio.zendesk.com/hc/en-us/articles/204374120-Amplifier-Level-Setting-Guide Alpine 9887, Oz 180CS, RF R500X1D, 12" RE SE
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