If possible, add up a digital farad capacitor to provide stable power for your amp to drive those speaker and sub. You'll notice lower light flicker when bass hit low.

Is called Digital Farad Capacitor. Usually 2 farad is good enough to power up to 2000W usage.

Is to avoid voltage drop, (when voltage drop, amp can't run smooth and cause enormous heat build up). 13V to 14.4V is the best range to run amp efficiently.

Price range from rm 2xx right up to RM 2k plus.

This is an example of Soundstream Digital Farad rated at 6Farad. Outside market price is around rm 1599 at least. But can get around rm 950.