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  #1  
Old 11-27-2016, 07:30 PM
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Default NSv3 15s and supercap fun

So I bought a few new cars for myself and the wife, and I don't plan on doing anything new with my current system vehicle, so I decided to take my wife's old Jeep Liberty and have some fun with it. Biggest problem with the build is space, so I took my time deciding how to get the most bass with the least space. I ran the numbers over and over and came up with a few good ideas only to find flaws in each of them. I finally came upon two 15s in very tight quarters to accomplish what I was looking for bandwidth wise. Only a few woofers out there that could operate in the space I had so I opted for some NSv3s mostly to avoid wait times on new woofers. Even more of an issue was finding the power to run everything in such tight quarters, and cutting down on weight. Agm batteries was out, I almost pulled the trigger on lithium batteries but ultimately decided caps would have to do the trick. On to the pics

Some goodies:


Subs:


Closeups:



4/0 and 2/0 cable throughout. Two runs positive and two negative front to back.


Side firing port was the final design:










Opted to try a different arrangement with the caps:


Few more touches



Wiring is tiring



Lining up the pieces


Mids and highs




More wiring



Mocked up a false floor


Charging up the banks


Quick paint job that needs some work yet


Some heavy lifting ahead


No headrests to block my view


I got a decent amount of listening but not enough so far. The bandwidth is perfect to my taste, and the voltage is unbelievably solid (14.4-14.5) and it sounds good overall. I took some video, and will take more in the near future. I'll be sure to share
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Old 11-27-2016, 07:51 PM
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If all you're running is that single 6500, you'd only need a single bank of caps and that alternator to keep the voltage above 14v.
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Old 11-27-2016, 07:56 PM
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Quote:
Originally Posted by doug118 View Post
If all you're running is that single 6500, you'd only need a single bank of caps and that alternator to keep the voltage above 14v.
Just the 6500. For now
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Old 11-27-2016, 10:00 PM
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👍👍

Looks great man...

Sent from my SAMSUNG-SM-G530AZ using Tapatalk
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Old 11-28-2016, 09:52 AM
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Pretty sweet How does someone determine how many of those super caps to use?
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Old 11-28-2016, 03:33 PM
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Pretty sweet How does someone determine how many of those super caps to use?
However much money you have divided by $44 for the 3000F versions. In banks of six for the 2.7V model too so buy in multiples of six
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Old 11-28-2016, 03:45 PM
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http://youtu.be/cKlb7NYYHTw

It's weird not having 14V batteries but I'm ok with this amount of drop so far
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Old 11-28-2016, 03:54 PM
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So it doesn't mess with the amp that the caps voltage would add up to 16.2 for 6 of them? Also is there a for sure way to figure out how many you'd need? For example I'm running a scv4000 what would I need?
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Old 11-28-2016, 04:18 PM
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So it doesn't mess with the amp that the caps voltage would add up to 16.2 for 6 of them? Also is there a for sure way to figure out how many you'd need? For example I'm running a scv4000 what would I need?
One of the cool things about caps is they can be charged up to their rated voltage or lower, so each cap in my bank is only sitting at about 2.4V. They also deliver power at all voltages, where typical agm batteries drop to 13V or below when they deliver high current.

Some amps like high voltage, some are ok with lower voltage, but they all need to see an appropriate amount of current to make power. With that SCV 4k you can see a bit of voltage drop and be ok, you could probably get away with one battery and one bank of caps and be good depending on how good your charging system is. I'm a sucker for overkill so it's hard to say what you need at a minimum. But try one bank, and see how far you can turn the knob until the voltage drops out of your comfort zone. If you make it all the way , cool. Then you know
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Old 11-28-2016, 04:25 PM
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Ok thanks! I'm running it off 2 xp2500 batts but I was curious because I'm going to try putting my system into my tiburon in the spring but I don't think I'll have the room for the batteries.
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