Active Analog Crossover

[gstokes]

I had wondered what type of crossover is integrated with an amplifier such as the one in my signature, it is referenced as an active analog crossover (preamplifier stage) and offers far more functionality than the passive crossover, since the head-unit has built-in active EQ wouldn't it be best to turn it off and set all the levels flat so the crossover/s inside the amplifier receives an unadulterated full-range signal ?

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[vaiboy 10+ year member]

The simplest answer is, no, the crossovers don't care, they filter boosted, flat, or cut signals. The slightly longer answer is that it doesn't matter how flat your input signal is you can still have peaks and valleys in the response due to things like speaker placement, reflections, and the response of the speakers themselves. It's best to start with the EQ flat then adjust to lower peaks in the response if you are looking for a flat response. Try to avoid boosting frequencies and especially avoid boosting the low frequencies with the EQ and BassBoost on the amp.