Quote Originally Posted by jhnkvn View Post
Do you need an amplifier?
Yes. While you can power your front components with the head unit, you can't with your subwoofer.

Can I use a pdx-v9 on my stock battery/alternator and not run into any problems if I am not an outrageously loud listener?
Yes. In fact, I highly recommend the Alpine PDX-V9 over any other amplifier locally at its price region. It's pricey locally so it would be best if you can parallel import one. If you want something better, the JL HD900/5 is expensive but it's an end-all amplifier. I actually wouldn't mind swapping amplifiers if I see one used and in need of a swap.

*Focal FX
It isn't really otherworldly. It's just good engineering which is why you pay for Focal. But for the price, there's actually a lot of others who is better on paper-specifications. The midbass isn't strong, it's just the highs are tamed thus the midbass is perceived as better
Sir thanks for your feedback on the PDX-V9.
Spec says Per channel into 2 ohms: 100W RMS x 4 + 500W RMS (2-ohm, 14.4V <1%THD+N).
Since the FX's midbass isn't strong, I'm eyeing another midbass woofer that is rated 3ohms impedance 100W RMS (200W max).
Would I run into heat issues?
Sorry, I became worried on the recent posts.