If i were you, i get that RM50 cap ayam amp, bring those to audio shop, ask them for subwoofer+box+installation < RM500

Active underseat woofer comes with built-in amp.

What Underseat Sub Bagus? For Myvi

If cheap can go for mbq 8inch , but the review not so good.

how about active sub woofer? active sub means the amp is included inside right??

yes

whats the diffrence between underseat sub and active sub??

Underseat subs are subs to be placed under the seats, they mostly also already active type/have built-in power amp.
Active sub is sub that includes built-in power amp in the box/casing. It can be may different shapes/designs: underseat, tube, or big box.

Bagus depends on one's expectation given the money spent.
I'm also using a pair of MBQ but 10s', bought around rm500 each all installed. I would say it fulfill my needs to just improve the bass sound of std audio but of course it would not match traditional big sub box. My criticism of this thing is the settings of the power amp gain is not good quality, can have high humming distortion on higher gain settings so it was difficult to set up just right.

how about the kenwood ksc-sw11?

You selling?

MB Quart active sub VS
Infinity Basslink SM VS
Kenwood KSC-SW11

Which is better?

Not planning to hahahaha

Actually almost all of them perform the same since they are sealed compact subs
The difference maybe on the build quality and clarity of bass instead of loudness since they are predominantly for SQ
If you require rumbling bass, go for ported box sub in the boot (slightly pricier since all of the components are sold separately but has more bang for your buck)
Those underseats, maybe if you like to listen to chinese genres, or modern songs instead of EDM, bassy songs, they do the job, even the cap ayams (MBQ, American Sound, etc.)

Yah I don't need it to be bassy like in dance songs, just need to fill in the lower frequency so that I don't need to drive my door speaker bass to the max.

Underseat would do the job fine but it won't be cheap tho if you want high quality stuff
My installer recommends adding amp to drive door speakers for a richer sound and also you will notice better bass notes but it all also depends on your HU
Btw what car are you planning on installing it into? I heard my installer say that different cars have different type of bass response since the cabin space plays a major factor in how bass response sound to our ears.

Adding amp need to cut wires, something that i want to avoid.

Underseat subwoofer is simple, just need to tap from the speaker.

Hi
Good day..

Recently I got a MBQ 8 inch sub woofer from LAZADA.
Have DIY installed it in my car, it is good but after a month of using it it got problem

It got a lot of rattling sound.
took it to a accessories shop for opinion why it is such.
I was told that the speaker is damaged.
I took out the speaker & saw alot of black rubbery thing falling out.

Is there a replacement for the speaker ONLY??
And where to buy it??

Any info will be appreciated.

Thank you & have anice day.

Merry Christmas & a Happy New Year.

Well what I can say is that you've purchased a bad sub... The rubbery thing is the speaker rubber surround or foam surround. The only reason i can think of why it turn to this is because its very old and was not kept well by the seller.
Unfortunately, you cant really repair these underseat subs since their speakers are not conventional aftermarket speakers, they are custom built to fit the sub only from what i know.
Now what you can do is see whether Lazada or the seller got give you warranty or not so you can make an exchange.
If not and you still wish to just own an underseat, go to xciteaudio.com and look for Kevin, they sell some high quality stuff over there and mine is still working until today (installed like half a year ago) and its able to work quite hard and boom quite loud. Plus they give you one year warranty as well.
Merry Xmas and Happy New Year