Oh and 1 more thing, during calibration, switch the filter on the JL amp for the underseat channels to LP, and set the frequency at about 220 - 240Hz. That will cut off any higher frequencies from the sweep and help you get better midbass.
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Mobridge DA2 > JBL MS-8 > ARC XDi 600/4 > JBL Gti 408 Mids & Vifa OT19 Tweeters; PG Ti2 1600.5 > Morel HCW-10 & IDMax 15
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