[pjm300]

Long time lurking 2018 DC Hilux owner here located in the Netherlands.
I'm running Kenwood double DIN head unit, Helix DSP.3, JL HD900/5 powering SB Acoustics SB17MFC35-4 midbass and SB29RDNC-C000-4 tweeters in the sail pods. Sub is a JL CP108LG-W3v3 8" microsub.

The sub box just fits behind the seats. its really tight and the seat bolts really squeeze the seat down on it. The output is also quite limited and I'm looking to change this out for something a bit better. It will probably be a Sundown SD4-10 in a Basser 15L enclosure Link. You may be able to fit one of these on each side behind the seats, but then space to mount other items would be quite restricted.

I'm also thinking about going 3-way up front - probably a Scanspeak mid and tweeter, also changing out the midbasses... Will probably start with the midrange ini the A-pillars and change the others as i get round to it! I'll probably get a new JL HD amp for the midbasses, and use the existing for the mids, tweets and sub.

For me, the midbass is a bit weak, but I think thats just my tune after hearing what others say about these mids.

I dont really have a good reference as to how it should sound though!

 

[pjm300]

Thats why I was thinking of the DSP integrated amps. I checked with Zpaco and they suggested if possible get the amps and dsp separate.
BTW you can also do underseat the amps. I think there is enough space below the front driver and passenger seat.
Well planning the build now, In thailand next week, so Hope to see a lot of Hilux there and get some ideas.

For the sub, I think the 10 inch is the best fit. I was planning to use my old JL 12tw3, but looks like it will be too tight.How is SD4 compared to TW3?

I was thinking of putting them under the seats, but then it would be very low for water crossings (I still want to use the Hilux for Hilux things!).

Im not sure on the output of the SD4 vs the JL. The choice of the Sundown would be more to match the 500W coming from the HD amp. They would both fit well within this enclosure if you wanted a simple plug and play!

 

[pjm300]

Then I'm not sure what keeps the air pressure equalized when I shut my doors since I don't have the vents.

I think you have a pre 2015 model, so your air relief vents will be somewhere else

 

[pjm300]

Have you considered the basser box I linked earlier? Hilux box
This should fit a 10TW3

 

[pjm300]

I got the quote Aud $1450 for the whole package excluding shipping that's still a lot for me.

I am now looking at underseat options. Maybe use a jacker and lift the seat a bit and add some shallow 8 inch. Came across the skar vd 8.

Do you have more pictures of your rear firewall? i see you have a box there labelled "CAN" or something?
i presume the 2021 version is similar to the other 2015+ models in terms of the amount of space there, so I do think there's a solution for you to go behind the seats.

This is my layout at the moment - excuse the mess, was waiting on some more cableties!