Polk Audio DXi 124 DVC, Has anyone used this? SPL/SQ?

[FeelDaBass]

Hi everyone,

I've been looking at this sub mainly because it is very cheap and I held one of the 10 inch models and liked the look and quality in my hands. I was thinking about buying 3 or 4 and putting them in a single ported box tuned anywhere from 29 to 35. I currently have a T1D215 and am very pleased with it but since these are cheap, I was considering on trying something new out. Cheap is good because I am a college student and wait for deals to come along.

But with 4 of these facing in my cabin sealed off from the trunk, running at a total of 2 ohms off my T1500-1bdCP, I thought it might be worth a shot.

So what do you guys think? Worth looking into? All 4 would be $140 or less to buy. I'm not 100% on the box design I would use either...might get me on the path to trying out bandpass boxes though..

[Joe X]

The question is if you can have 8 cubes net box and can do a baffle with an area that will support the 4 subs + port to seal off. Also those are SQ subs so probably won't like getting overpowered too much if you intend to do so.

[FeelDaBass]

I have a 98 Chrysler Concorde which has plenty of room in the trunk. I know I could fit 3 for sure, 4 I would have to do some careful measuring to fit a box where I would want it. I would be running it with my RF 1500 so I would probably use a -5 db overlap and that would be close to the RMS power of 4 woofers (1,440). Otherwise with 3 woofers would come to a total of 2.67 ohms and keep the same overlap.

With them being SQ subs, they would still have more potential to hit louder than one T1 15, right? More cone area, about the same power.. (With proper box sizes).


This box is 2.75 cu ft per chamber, total of 5.5 cu ft (for 2 15s). I would have to improvise in order to get a bigger box but is definitely doable. The seat side would have to be in a V or U shape to fit all 4 however.

[BoomZoom808]

The T1 10 I have is louder and sounds better then the pair of polk 10's I had in a fierce prefab. 4 DXI 12's would be a fun project and you could always sell it after but I think saving up for another t1 15 and running 2 would probably sound better and be louder in the right enclosure.

I also ran a pair of Polk DB 12's sealed on a GT-2200 and they sounded really good but they just don't hit hard like I know a T1 does I would even give the SQ edge to the T1 sorry kinda becoming a vs thread.

[slowfkncar]

Im pretty sure 4 12" dxi's will be louder then 1 15t1. If im not mistaken. A 12dxi and 15t1 both have 88db efficiency. They will not get as hot as a single t115. Cant tell you which one would sound better though.

[RooTxBeeR]

It should be louder, it has almost triple the cone area of a single 15. I don't know the motor force of either sub so I don't know which is stronger, but you will have more magnet and coil with the 12's to cover all the power. Honestly man, I think getting another 15, and doing what your talking about with 2 T1 15's would be better. I'm pretty sure the T1 sounds way better than those polk subs.

[FeelDaBass]

Alright, thanks everyone. I was giving it a thought since they are reasonably priced. Another T1 is close to double the price and up, and I don't exactly have the budget for that right now. But I will most likely do that down the road since I'm really happy with the SQ and SPL with the T1.

[Themidnightshot]

I'm running one in my truck on a 1k amp bridged down to 1ohm. Slot port box with 2.1 cubic ft and it hits pretty hard. Not bad for the price. I'll deffinately be getting another this weekend. I'm going to be building a bigger box though. I get a lot of compliments on the sq and some ppl think I have a pair of 12s. But for 60 bucks at best buy, I sure ain't complaining. Just worried that amp will blow it. Gains set at 1/4 so it should be good.

[Themidnightshot]

I meant 2 ohms not one haha