Does Audison Vrx2.150CS enough to power up Hertz MLK165

[goldway 10+ year member]

Hi i have follow setup. and plan to run two way active.

Alpine 9887 + iPOD cable +iPOD Photo 60G

Audison Vrx 2.150 CS

Audison Vrx 2.150.2 EX CS

Hertz Mille MLK 165 Comp Speakers

i have two questions here.

1.i use Vrx2.150.2 to power tweeter ML28, use Vrx2.150 to power MLK165 mids.

Are they best perfer way to connect?

2. somone tell me if still need Hertz crossover box which came together with MLK165, but i am running active, not sure, i still need the crossover or not.

3.My system setup no Subwoofer, too me midbass is good enough, but i feel Vrx2.150 seems not give MLK165 enough power, so the midbass is weak. Any advise to slove my problem?

4. What is different with bi amping or active?

(i was running passvie with MLK165 and Audison Lrx2.9 before,midbass is good.)

Thanks

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