audio set-up for beginners [continued]

[battouter]

Do you have an external amp or it would be powered by the HU alone? If so, a advisable set of budget speakers that would be powered by the Head Unit alone is the Infinity Reference Series speakers. It's a low wattage, high sensitivity, 2ohm set of speakers. Very ideal to be driven with the HU's limited power.
Mas malakas po siya tutunog compared sa previous speakers ninyo and halos same lang ang SRP nilang dalawa.

i bought the car used from a friend, and it was kind of setup already but i didn't really bother with it. It already had a tweeters, subwoofer and an amplifier (see pic) and it is using the stock HU which is an Alpine CDE-9852. I'm just looking for something not expensive but sounds good.