Featured 2018 Toyota Sienna minivan with 2 DB4515R on 2 Taramps Smart 8 Bass

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Goals for this build:
Have a great sounding front stage that gets decently loud. Needs to have SQ and some power but it doesn't need to be pro audio loud.
A strong sub stage that plays down to 28 or 30 hz very well. I only play music on the subs and the lowest notes it needs to play are around there.
Only give up the trunk, and have everything else fit into the interior or be hidden away.

It's mostly done as I'm writing this so the equipment list and such are final unless I decide to redo some things later. I'll post progress pictures I took while building it in later messages.

Power:
240ah Yinlong LTO (currently 160 installed)
14.8V 400A large case alt from AutoTech
GP car audio fuse blocks
Lots of Knuconceptz 4/0 cable

Front:
Hertz Mille Legend 280.3 Tweets
Hertz Mille Legend 700.3 Midrange
Hertz SV200L 8" midbass
3x Taramps TS800x4
MiniDSP C-DSP 8x12

Rear:
2x Deaf Bonce DB4515R in around 7.5 cubes tuned to 28 hz
2x Taramps Smart 8 Bass (currently one installed)

Click to read more...

 

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Started by planning what I was going to do and pulling the interior apart to run all my wiring under the carpet.

I always find funny stuff under the seats and carpet. This time I found a whole *** butter knife, lol.

 

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The front doors.

 

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New door speakers next to stock.

They actually sounded really good for a stock setup. When I pulled the headunit out I found out why. Turns out it was made by pioneer. This is the lowest trim level too. Who knew

 

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Butter knives saved my *** more than once in mad max road rage situations.

 

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Damping the floor. That red cable runs over to the passenger side behind the glove box and through the main firewall grommet. I got rid of the under hood battery so this cable starts the car and carries alternator power into the cabin.

 

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I built this center console to hold all the equipment for the front. It's made of 1/4" ABS held together with adhesive. The top has cup holders on it and hinges upward. It's about 12x18". It holds 80 AH of LTO (there's a second bank in the back as well), the TX 800x4 amps for the front and the DSP. The panels the amps are mounted to are on drawer slides so I can pull them up, connect the wires to the underside, and slide them down. This picture is a bit old, I actually don't run a balancer anymore.

Here I am putting the cables that wrap over and into the fuse box together.

 

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Here's the absolute mess of cables running to where the center console is. One power to the front, 2 to the rear, a couple grounds which are bolted to the frame, wires for the 3 pairs of front speakers and one pair for the rear, remote wire, 4 channels from the headunit.

Here it is all together.

Later, I added some 3d printed parts to the lid for storage and to make it look more complete.

 

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No chance I could get away without interference noises from all these power cables near my dsp.

I'm just not that lucky.

 

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The rear speakers. Mainly because I notice the sound from the front is a good bit quieter by the time it gets to the 3rd row so I decided to give them something basic. The mounting situation is tragic though, it's right up against sheet metal that goes outside so it can't be cut away and I can't really move them without putting in more effort than it's worth. I basically hollowed out the old speakers to make a mount and made it work. Just some 6.5" kicker coaxs.

 

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No chance I could get away without interference noises from all these power cables near my dsp.

I'm just not that lucky.

Yeah I didn't think of it when I built it. Bit of oversight on my part lol. The funnier part is that there is a small amount of alternator whine right now, but it's coming entirely from the headunit. I need to open the dash again and give the headunit a new ground, right now it's just hooked up to the stock harness.

 

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The dampening in the middle. I cut the insulation away so the wire is less noticeable under the carpet.

 

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The dash setup. Tweets on the a pillars with mids in the dash pointed at the glass. The tweeter pods are by valicar stuttgart. The dash location has a tweet in it from the factory if you have a higher trim than mine. I 3d printed some mounts for my 3" midranges, they fit almost exactly lol.

I cut a hole in the stock covers to make room for the mid, and then covered them with speaker fabric to make it look right.

 

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Now onto the trunk. I just ditched the carpet and any of the trim that you cant's see from inside. I built a bracket of flat steel to hold up a plastic enclosure for the back battery bank, which is double the size of the one in the console, 160 AH. It's attached via rivets or welding whichever I thought was appropriate.

 

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Here's the subs. They are awesome.