150 dbs on sony xplod subs, can it be done????

[fecupe2001]

Hey guys, i bring to you this little project on wich we worked for a couple of days from scrap, the car it´s a CRX HF 89, please, i know according to lots of people that the crx "can fart a 150 dbs" , sometimes it´s not funny at all that comment since you have to work hard like any other car, yes the car helps a lot if you know what you are doing, BUT, it´s first time that we try a crx and sony xplod subs also, hope you guys like it

Details:

1989 CRX HF

Subs: 4 Sony xplod 10" 45$ subs, they are 450 watttttsssss

Amplifier: Single Digital Designs M3a

battery: Single XS Power D3400 on front

Wire: 4 runs of 1/0 cheap Soundquest gauge lol

Box: 4.2 cubic feet and 2 6" aeroports

I´m gonna post as much as i can since i went on a cruise around the caribbean in the middle of the build so i don´t have as many pics as i want, in the meantime, i can tell you this, the car has 0 work on it, and also, the box has 0 work on it, the goal was to score a 148 using 4 sony xplod subs and below 2500 watts since Street C is limited at that power around here, enjoy...

The beggining:

Once again, we have NEVER tried a rex or sony xplod subs before, i don´t have pictures of the single sub box, but we built a 1.3 cubic feet box so we could shrink it until we found the best box size for a single sub in that car since we are gonna play around A LOT with sony xplod subs now hehe, at the end of that test, best we found was 1.05 cubic feet for a single 10" sub, of course, when you add another sub the box is totally different, but, we didn´t have any time since i was going to my trip only 2 days later, so we just decided to multiply that box size x2 and add another sub just to test out if it worked or not.

1000 watts subs yoooo!!!

2.1 cubic feet box, one sub forward, one sub up and port back

Trust me on this one, we tested a few port areas, single 6" , 2 4" and 3 4" ports until we found that, single 6" aero was perfect for that pair of subs

We retuned the port until we found that, 52 hz was perfect, all the testings were made with a single Digital Designs m1b wired @ 2 ohms, single small stinger battery on front and 2 runs of 1/0 , the funny thing is that, box didn´t have even glue on it and only a few screws so we could test everything easier, but anyways, score was promising

After only one full day of testing, we definitely went with the fastest and safe route , we multiplied that box size x2 for the 4 10" subs box divided on the middle so we didn´t have more problems that we already had by using such a big box since we didn´t have any more time to test anything, I KNOW it´s no way near to be the best box design that i can get, but we were on a rush, so bare with me

So , the next day, we started on the 4 subs box , 1" MDF and 4.2 cubic feet with 2 subs forward, 2 subs up and 2 6" aeros back

We ran out of 1" MDF, so we had to seperate the chambers with a 3/4" MDF lol

We went with this kind of configuration since we also tried subs forward and to the sides but the car didn´t like the flex that much and we didn´t have ANY time to test some sexy ass dynamat lol

[n8ball2013]

if you use all 4 yes.

[EclipseChris]

Haha your not the only one who has tried.

http://forum.mwcaraudio.net/showthread.php?t=1971&highlight=sony+xplod

[fecupe2001]

Box was starting to look loud

View thru the front sub

Thru the port

Below the box, you can see the single sub box we tried lol

Xploddddeeee !!

We ran out of daylight and the neighboors were gonna complain if we burped the car at night, that night i barely sleeped thinking about the score we needed to get, our goal was to burp a 146 using the DD m1b and the shitty electrical we had, if we got it, i was pretty sure we could burp a 148 with 45$ subs and using a single 2500 watts amplifier like we wanted.

So, the next day, we got the box inside the rex, fingers crossed

BOOM!!!!

After finding the sweet spot of the box:

[fecupe2001]

if you use all 4 yes.

hehe wait for it

Haha your not the only one who has tried.

http://forum.mwcarau...ight=sony+xplod

hahaha that was awesome, we are using 10" subs tho lol

[Guest]

cant you do sub up port back or something? afaik thats the best config for crx's, but what do i know.

[fecupe2001]

cant you do sub up port back or something? afaik thats the best config for crx's, but what do i know.

Kranny, it has 2 subs front, 2 subs up and port back, only way i could fit 4 subs up it´s with a taller box because the port would need to be internally mounted and it would be past the window line, only way i could fit them would be if i used 4" aeros, but i prefered to use less ports instead of multiple smaller ports

[Socky]

i always see subs forward and port back in a crx

[fecupe2001]

Yes sir, we tried a lot of configurations and sub forward/port back its the loudest, and second one would be sub up/port back, that´s why we went with a subs forward,subs up and port back box, if you guys have seen my topics and comments, i almost never ask for anyone for any help, ALMOST lol haha, now that i built the box is that i asked kevin and terry what they thought about it, they gave me a few good inputs that i´m gonna try on the next box, but in the meantime, let´s post the results with this one, shall we???

[fecupe2001]

Panamenian record was 148.3 dbs using Soundstream subs and a 2500 watts amplifier, that car had a couple of years of testing already, we only had a few days, the next day we finished the box i went to my cruise and my buddy TOPSECRET507 (the owner of the 155 4 9515´s wall) finished the job, changed the battery, applied some resin, painted the box on the beautification process, installed 2 more 1/0 runs, changed the DD m1b for a DD m3a wich was below the power limitation on the class, box ended up looking like this:

Digital Designs M3a and 4 runs of cheap 1/0 Soundquest wire lol

I arrived from the cruise a few hours before the show, here´s your sexy latin SMD member fecupe2001 drunk as hell

And now, the fun part, the results!!! Enjoy the video

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http://www.youtube.com/watch?v=Tqq5jMRB2jM&feature=g-upl&context=G2ffdab5AUAAAAAAAAAA