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Success! Low-Cost Subwoofer Experiment

Here's a picture of the box installed. One thing to note is that there is no longer a lip on the box over the top of the adjustable partition as shown on the supercrew website. Doesn't make a difference I think and looks easier to build. The box just sits in there and I keep two black towels next to it - it's not going anywhere unless you offroad like the Dukes. Also, the lighting is off a bit due to the flash, but this is the no extra charge gray carpet on the box in my black truck.
20230415_072803.jpg

And here's a blurry, one cup of coffee shot where you can still see the clearance between the woofer and the seat bottom. They advise using a speaker grille but I'm going to pass. There is also clearance for the under seat bag holder hook so I've left it there.
20230415_072911.jpg
 
Great data points. Thanks! This solution is definitely top on my list, and still give me the option to add my amp if I want.
 
Did some driving today and while two 1 Ohm resistors is very clean sound from the sub, it's just a tad too low in the new box. So I pulled it and bypassed both resistors. It took no time at all to decide that didn't work. It's back to over-boosted bass (with EQ Bass at 0). I'm aiming at a nice balance where FM isn't obnoxious to listen to and streaming thumps where it should.

So for now I'm only running one 1 Ohm resistor before the filter on the plus side. It's good so I'm going to leave it this way for a while but I may try adding in a .5 Ohm at some point. It's kind of hit or miss trying to balance the sub output using resistors but that's all I know to do using the factory amp.

Here's what the inside of the box looks like with the parts mounted. I used double sided foam tape behind them and standoffs on the red low pass filter. I then tossed in all the poly fill stuffing I previously had in the factory sub.
20230415_125825.jpg

It really does sound so much better than stock. Keeping the Bass and Mid at 0 on the EQ let's me hear all that mid-bass and the sub I've been missing for so long.
 
Did some driving today and while two 1 Ohm resistors is very clean sound from the sub, it's just a tad too low in the new box. So I pulled it and bypassed both resistors. It took no time at all to decide that didn't work. It's back to over-boosted bass (with EQ Bass at 0). I'm aiming at a nice balance where FM isn't obnoxious to listen to and streaming thumps where it should.

So for now I'm only running one 1 Ohm resistor before the filter on the plus side. It's good so I'm going to leave it this way for a while but I may try adding in a .5 Ohm at some point. It's kind of hit or miss trying to balance the sub output using resistors but that's all I know to do using the factory amp.

Here's what the inside of the box looks like with the parts mounted. I used double sided foam tape behind them and standoffs on the red low pass filter. I then tossed in all the poly fill stuffing I previously had in the factory sub.
View attachment 156628

It really does sound so much better than stock. Keeping the Bass and Mid at 0 on the EQ let's me hear all that mid-bass and the sub I've been missing for so long.

What's the thickness of the MDF? It doesn't say on his website.
 

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