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2 Sundown Audio Zv3 15's in the Scion TC.

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How do you all feel about the build? Just finished by a shop in AZ called Sound Xpression. Box has 3 cubes per woofer after driver displacement and all that; tuned to 35hz. Running off a SAZ3500. What's your opinion on it? Also, any help on whether or not the ports are too small? Thanks!

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JMO... those subs need a little bigger box? and i would tune a little lower (32-33) all in all, i bet it gets nasty..port does look a little skimpy though


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This is basically all the room I had to work with.. It's a bummer I know, I would have went larger as well, both box and port, but without spilling over into the back seats, this is as big as I could go. Each port is 12" x 3.25" x 12.5".

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13 sqin port/cube... not TOO bad but not great either. I'd want more like 14-16. Port looks REALLY close to the hatch too...


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Yeah.. Port is really close to the hatch. What does that do, if you don't mind me asking? I'm young and don't have much experience under my belt, so any knowledge you could pass on will be greatly appreciated. What else could they have done w/ the ports? I pretty much left it up to them as I didn't know a ton about all the technical stuff.

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Use psp ports


4x 12" HDC3's

1x Hifonics Maxximus (rated 10,000@1ohm)

2x Powermaster D3100

8x runs of 0 gauge

1x stock alt

 

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Yeah.. Port is really close to the hatch. What does that do, if you don't mind me asking? I'm young and don't have much experience under my belt, so any knowledge you could pass on will be greatly appreciated. What else could they have done w/ the ports? I pretty much left it up to them as I didn't know a ton about all the technical stuff.
you want to make sure the ports have enough room to breatth. But they really don't need much room. Three to four inches should suffice

4x 12" HDC3's

1x Hifonics Maxximus (rated 10,000@1ohm)

2x Powermaster D3100

8x runs of 0 gauge

1x stock alt

 

155.2 dB legal (vehicle off and @50Hz) in a Ford exploder

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Should of went with 12s in the right box.


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How does everybody feel about the PSP ports? That's my best option for increasing port size area without having to reconstruct an entirely new box, correct? And just to put this back out there. Each woofer is in its own enclosure. 2 separate boxes. So how big of PSP ports for each taking into account the port size already on the box? Thanks. I wanted to go 15's, since I've always had 12's. I'm not lacking on airspace as far as recommended specs, but I fully agree these 15's need a little bit larger of a box to be maximized.

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Should of went with 12s in the right box.

 

That's why I didn't go with 15s. Better to have the right speaker in the right box.


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How isn't it the "right box"? It correlates perfectly with Sundown's recommended specs. Now, I understand that people fiddle with those numbers to achieve the sound they want, but as far as it not being the "right box", I beg to differ. I could be sounding like an idiot, as I admittedly don't know as much as you, but I'm not a believer that it is the complete "wrong box".. Any help with the port situation, though?

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To small. At lest 3.5 cubes, and at least 14 square inches of port per. You have neither. = wrong box. That's why I didn't go 15, even with the seat out its to tight to do it right.


2014 Ford Fusion SE 2.0T

JBL MS-8

Zapco ST-4X SQ, ST-1000XMii

IDQ12v4 1.8cu sealed

Alpine SPX Pro ring radiators

Hertz HV165XL

Knuconceptz OFC, Custom fit Soundrive RCAs.

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Where are you gettin the 3.5 cubes from? I'm pulling straight from Sundown's site. It reads as 3 cubes. I don't know why a manufacturer would put false or incorrect measurements on their products. I'm just trying to understand where you are getting your numbers from.

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Where are you gettin the 3.5 cubes from? I'm pulling straight from Sundown's site. It reads as 3 cubes. I don't know why a manufacturer would put false or incorrect measurements on their products. I'm just trying to understand where you are getting your numbers from.

 

I'm getting my numbers cause its a 15. 3.5 is the minimum.

Question is are you happy? If so its all good.


2014 Ford Fusion SE 2.0T

JBL MS-8

Zapco ST-4X SQ, ST-1000XMii

IDQ12v4 1.8cu sealed

Alpine SPX Pro ring radiators

Hertz HV165XL

Knuconceptz OFC, Custom fit Soundrive RCAs.

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Without seeing the inside of the box, nobody could possibly tell you if the port is too small or too big. Within the constraints of the purchaser(you) I have a feeling the box is the perfect box to meet your needs. Now if you had 12's, box would be different, 18's, then that would be a different install. My only concern is the amount of wires being ran directly off a single battery terminal. But that is just personal preference, I prefer to use fused distribution blocks for the equipment that uses less power. Just looks cleaner to me.

 

Edit, I didn't realize you put up the port dimensions, and yes, they are a little small. But within your constraints, they are needed. You're losing output, but until some of your variables change, the box will have to stay the same.

Edited by Joseph7195
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Yeah, it sounds incredible! I'm sorry if it comes off as me arguing or being condescending. I appreciate every opinion you gave me. I'm just trying to figure out if I'm able to work with I got, since it would be a costly error if the box is really that bad. I don't want it to hurt the woofers. Would small PSP port additions on each box make anything better? Or is airspace what is more crucial? I really can't get a larger box made without spilling over into the back seats, and I've already got the 15's on my hands. You know?

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What variables would be most effective and feasible to change given my constraints, Joseph?

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Just as mentioned above, the Rquired box size for a given sub. Depending on the sub, the requirements for outputs differ, and all require different enclosures. I know some 15's and sme 18's that sound best in a very small sealed enclosures. Some subs sound best in ported, but your choice in subs will ultimately chose your enclosure types. On another note, there are no trolls in this thread, nothing but good information has been given so far. Which is awesome to see!!


We don't have food stamps on the east side. Its called a link card. Man, the grocery is packed on the first of da month. I shit you not, a homie got stabbed over a can of soup.

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Yeah, it sounds incredible! I'm sorry if it comes off as me arguing or being condescending. I appreciate every opinion you gave me. I'm just trying to figure out if I'm able to work with I got, since it would be a costly error if the box is really that bad. I don't want it to hurt the woofers. Would small PSP port additions on each box make anything better? Or is airspace what is more crucial? I really can't get a larger box made without spilling over into the back seats, and I've already got the 15's on my hands. You know?

 

If you haven't noticed we have the same car. If you want them right its going to take up every bit of room behind the front seats.


2014 Ford Fusion SE 2.0T

JBL MS-8

Zapco ST-4X SQ, ST-1000XMii

IDQ12v4 1.8cu sealed

Alpine SPX Pro ring radiators

Hertz HV165XL

Knuconceptz OFC, Custom fit Soundrive RCAs.

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I'm getting my numbers cause its a 15. 3.5 is the minimum.

Question is are you happy? If so its all good.

 

My z liked right at 3 cubes. Was tuned @37 though


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