I was going through my menu on my head unit and one of the options to adjust is the sum. I checked my book and it just says its adjustable from 0 to 30 and nothing else. So I was wondering if any of you guys know what that is. Its a Rockford Fosgate MP3 player if that helps
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#2446, "RE: what is sum???" In response to Reply # 0
SUM FLAT <80HZ> (Model 9210 only) — Means third pair of RCA pre-outs is full-range while 80Hz means that the pre-outs are crossed-over 80Hz low-pass for subwoofer use.
That's all I could find in the manual, I'll ask my boy and find out for sure since yours seems to have a different value setting.
