Thank you!

Thanks for the feedback!

Thanks for subbing! Chat GPT is programmed to give answers that pleases users. Sometimes it has no idea and makes things up. I have known that it has even completely made up references on research papers! At other times, it can be completely accurate. I think it is telling you to port to the rear of the truck wall because that is usually what works best for suv's, hatchbacks, crossovers, and some trunk builds. That is definitely an unconventional build in a truck, so I am cheering for you! I usually see speakers facing forward and ports firing up close to the back wall. There are some tricks that help as well. Typically the box in the rear passenger side loads the front driver side the best. I think the 35 hertz is great for daily listening! Cabin mods like vibraflex and foam may help a lot as well.

This might depend some on what that resonant frequency was. You can digitally correct it with a dsp. Also, you could do a fix with a sub box setup. As an example, if your cabin resonance was 40 hertz, you could build a 6th order box and instead of tuning it like 28/56, you could spread out the tuning further. This will cause a dip in the middle tuning right at that 40 hertz. So you could go for something like a 25/65 tuning. Then, there will be a natural dip at 40 with the box but the vehicle will boost that back up. So, you just end up with more bandwidth. That way, you just use it to your advantage.

By the way, good chatting with you, haven't talked with you in a while!

Yes, most typically measure from their port to the windshield (or where you run your meter), if you are aiming for spl.

Yes! The v2 is bigger, more motor force. I remember a post where Jacob Fuller said you could expect about a .5 db increase with the same power on the v2 over the v1.

If your subs are facing forward, measure the distance from your port to your windshield. If you are facing them backwards, measure from your port to your trunk, then to the front windshield.

Then use a calculator, like the one liked below, to calculate the frequency of your quarter wave based of of the distance in feet. www.translatorscafe.com/unit-converter/en-US/calculator/sound-frequency-wavelength/

@@caraudiolab thank you so much!

@@scottbe1 Let me know if you still need additional help in this, maybe I can make a video on it. Thanks!

@@caraudiolab something I just thought about. I have the port side firing into the drivers side of the trunk. Do I measure it to the side of the trunk then to the windshield?

Great question! You need to use a 50% bigger than recommended sealed box (make sure it is sealed). Go with a smaller sub, like an 8" or 10" if possible. You will need a meter. You provide just enough power to hit about a 130 db and you run through frequencies from about 30 to 70 hertz. If you have a really big vehicle, you may need to go lower, but that is unlikely. Most Tahoe's and Vans are in the 30s cabin frequency as an example. Keep the power level the same and slowly go up in frequencies. You will slowly get louder and louder until you start dropping off again. Where you hit the loudest, is your peak frequency. I guess I can do a video on that in the future as well.

Thank you for the detailed answer to my question. I learned something new. I really appreciate it.

People said the Chevy trailblazer RF is 38 hz and if it's true what do I do I have 1 powerbass 3xl 15 on a audiopipe 2000 running 2homs and want it to get loud

@@thetruthtings1672 38 hz is probably correct or close with that vehicle. I would build/use a box tuned to 34 hertz, as long as you don't play a bunch of rebassed music. If you are going to stick with that power, I would make the box a little bigger than what Powerbass recommends, by a cubic foot. Do sub up and port to the back and then move it around in your vehicle when completed to find where you like the sound.

@@caraudiolab thanks what's a good middle priced loud 15 that cought your attention over the years. My trailblazer has the big 3 upgrade AGM up front and back. I want to be heard from a few blocks away and I like every bass note to be loud even the low notes