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DD-1 tuning help

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Being new to car audio, i don't understand what "gain overlap" really means, -10db, -5db, 0db ? What is the best way to tune my system with my DD-1? And what settings should i set all my dials in the amp? This is my first time using this and I don't want to misunderstand steps from the manual.


2sundowns U12 D4 wired at 1ohm

Skar rp4500 amp


ACR1 (bass knob) for LC2I

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Think of overlap as allowing you to set your gains higher with a negative overlap because the signal coming from your radio is -5 or -10 dbs lower than at original 0 db source volume. 


Music is dynamic so the purpose is to allow you to get more out of your amp with music


A moderate amount is -5db so you should be fine with that, or go with a higher one and just pay attention to how your sub sounds / smells. 



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