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Discussion Starter · #1 ·
Hello my dearest xBers,
I've just bought a Pioneer TS-SW2501S2, a 2 ohms 10" shallow sub pounding 300 W (1200 Max) that I'll wire to a Pioneer GM-D7500M digital mono amp that produce 300/600 W (800 Max). I bought an over-designed wiring kit for the amp, since i'll probably buy an amp for the speakers someday.

I have to main questions :

1) Is that setup correctly designed?
2) Sub box : under seat or over the spare tire?

Thank you,
Math
 

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10" sub is pretty big if you're trying to squeeze it under the passenger seat or above the spare tire. What is the sealed enclosure volume required for that driver?

I did an 8" sub in a sealed enclosure see my website (link below). Another guy did a 10" sub however his enclosure is of course bigger, he was not able to allow a heater duct path and had to add volume forward over the crossmember, and also aft taking away some rear passenger toespace.

I know someone makes a custom enclosure the works with an inverted spare and you also lose all the storage trays in the rear. I bet the sound is really good, but that enclosure is expensive, I think somewhere between $300 to $500. Someone else on this forum can provide specifics.

Other people on this forum have put the sub on the RHS of the cargo bay in a custom enclosure, for example evilcalvin.
 

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Discussion Starter · #3 ·
Pioneer says the sub requires 0.35 ~ 0.7 Cubic Feet. They sell a mdf box fitting that sub that has 0.35 Cubic Feet (18-5/8" x 12" x 5-7/8" ) Box. But for 100$ i'll make my own!
 

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Discussion Starter · #4 ·
I saw the ScionPro SUBTUP and it gave me an idea. Maybe I could do a smaller version of this that would fit directly into the foam above the spare tire, after a little scarving. Do you think I might work, or there will be too much vibration?
And what about a DIY for other guys if I suceed?
 

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This one is prebuilt to fit a 10" under your Xb seat. It is also $100, but at least it is exactly what you want. Notice it sits up so there is space for your passenger's toes and for the floor vent to blow through.

Elemental Designs: Car Stereo, Home Speakers, Electronics

I thought about buying this, but ended up building a plain mdf box for the back until I have time this summer to try my hand at a fiberglass enclosure that tucks in the side of the cargo area.

I also wonder if an upward firing sub under the seat might be uncomfortable for the passenger. Would they feel it if you turned up the volume?
 

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In my wifes car she cannot feel any more vibration from the 8" sub under the seat. You can feel it in the center console to me, but other than that it sounds pretty darn good. I want to put my other 10" sub in the back eventually, but the 8" under the seat is working fine for now. If you do put it under the seat make sure to zip tie wires and everything up and bend the bracket so that nothing will hit the sub when it hits.
 

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I also wonder if an upward firing sub under the seat might be uncomfortable for the passenger. Would they feel it if you turned up the volume?
I have an 8" upward firing sub under the front passenger seat in my car. When sitting still you can feel the vibrations, but once under way the effect is masked by road vibrations. I guess it also depends on how sensitive your passenger is to bass vibrations and if they dislike it. Some enjoy it!
 

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Does that box for under the seat work under the driver side too? I wanna do a 10 under each seat to start :)
 

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Does that box for under the seat work under the driver side too? I wanna do a 10 under each seat to start :)
From what I've read, under the driver's seat is some kind of yaw or motion sensor that is bolted to the unibody. That will make placing a sub there more difficult. Not sure if relocation of the sensor is possible/practical.
 

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Looking at the box in the link from ED, it sits up off the floor because they appear to have the sub firing downward instead of upward towards the seat. You would have to measure how high the sensor is then contact ED to see how high the box is. Don't forget to factor in the excursion of your sub too. Also check the overall height of the box versus the space under your seat. Maybe there would be room to shim the box up a little higher off the floor.
 

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I'm thinking about buying one box for the passenger side and just copying it for the driver side so I could take that into consideration.
 

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Sorry the first link was the box all done and installed here is the link to the specs of the box.

A real 10" sub under my xB2 passenger seat. Stealthy! - Scionlife.com
Yup I researched this link before I did my 8" sub. For the 10" sub whiteymarvin had to relocate the passenger seatbelt sensor (I did that) block his heater floor duct (I didn't do that) and extend the box volume forward over the crossbar as well as back into the rear passenger toe space (I didn't do those either). Well the volume needed for the 10" sub has to come from somewhere....that's why I went with 8". Naturally you have to weigh which is more important, sound or heat or toespace, and make your choices. Also he did not do the driver's side, as SumthingMessy wants to do. Like whiteymarvin, I put my monoblock amp under the driver's seat. Have fun and measure carefully!
 

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i was thinking of putting the amp in those cubbies under the rear seats. ive been thinking about what im gonna do and i still have a little while to figure it out. i know i want one under each seat though.
 

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i was thinking of putting the amp in those cubbies under the rear seats. ive been thinking about what im gonna do and i still have a little while to figure it out. i know i want one under each seat though.
Be careful NOT to drill thru the floor under your rear seat, as the plastic gas tank is right underneath that floor!
 

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i was thinking of putting the amp in those cubbies under the rear seats. ive been thinking about what im gonna do and i still have a little while to figure it out. i know i want one under each seat though.
I was going to do the same thing with my mono/sub amp, but the space wasn't big enough.
 
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