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The Wifes stereo build

 
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Old 06 Sep 2011, 11:07 pm
xwing777's Avatar
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Default The Wifes stereo build

Heres the stereo system i recently built for the wifes PT. The first step was to build a box

with a kerf port. The plus with kerf ports is they are very efficent and are louder than a

standard port. The minus with them is they take up a lot of room in the box and are a pain

to make.



The box is 5cubic foot and tuned around 32HZ. Made from 3/4" MDF, doubled to 1 1/2"

thick for the baffle.




Reinforced with fiberglass (tigerhair) on the corners, edges and kerf areas.






Then when completed, used a rubber coating on kerf and ported wall areas (to dampen

box)




Time to test fit into rear hatch!




First round of covering and a monster can to get an idea of port area and size:






Now to add terminals and subs. For the subs i used Alpine type-r dvc at 2 ohm. These are

wired in series then both subs wired in parallel giving a 2 ohm load to the amp.








Ok now on to the car. I dampened the sides, roof and hatch areas.










An old school trick i used back when i did this for a living is using polyfill to quieting down

noise. Stuff into every recess tightly. Unlike spray foam, this will not become squeaks and

is a lot less messy. You can also remove it easily if needed unlike spray foam.



They are large open areas that you can block and stuff polyfill in (polyfill will not mildew,

hold water like other solutions either.



After doing this the car is very dead and quite (a good thing for audio)

Now i needed some extra battery power so i went with shuriken 60 (these are made by the

same company as kinetik only cheaper). I installed it on the drivers side rear behind where

the storage pocket is.








.

.


.
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Old 06 Sep 2011, 11:07 pm
xwing777's Avatar
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Default Re: The Wifes stereo build

Now to add tweeters in the mirror sail panels






**Wifes theme is sea life, hence the "fishy" covering i did for her. LOL



For the head unit, she wanted video (added dual headrest monitors as well) and for the

price its hard to beat jensen radios. Went with the 9214 and has almost any feature you

need. While i was at it, painted the bezel to match airbag and speedo housings.








Now to trigger the radio (no power at radio on 06' up PT's) i installed a fuse box under dash

triggered off a relay. ***See my how to for details.




Now back to box, i used an Alpine PDX-M12 (1X1200RMS) for the sub and a Alpine

PDX-F4 (4X100RMS). Incase you are not familar with these amps, they are very effecient

putting out the same wattage at 4or2ohms since they are digital. They also run very cool

and you can stack them on top of each other if needed. The best part is there size. They

are only 10" X 8" and around 2" thick!!







How much room does this take up? Well the box fits tightly against the rear seats and the

other side fits tightly against the rear hatch.





Still tweaking here and there, havent gotten everything completed yet but for the most part

its done. Its just slightly louder than the stock system was................lol

.



.
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Last edited by xwing777; 06 Sep 2011 at 11:11 pm. Reason: image link
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Old 07 Sep 2011, 07:58 am
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Default Re: The Wifes stereo build

Now that was a hell of a project. Really nicely done!
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Old 07 Sep 2011, 08:08 am
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Default Re: The Wifes stereo build

Super cool! Love it! Great job!
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Old 07 Sep 2011, 09:58 am
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Default Re: The Wifes stereo build

Nice looks . That box is sick. How about a lil more info on that battery..
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Old 07 Sep 2011, 10:09 am
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Default Re: The Wifes stereo build

That is precisely 47.334 times too much subwoofer (for me). I'm happy as a pig in mud with a single JL Audio 10W3v3 in a sealed box - 200W pushing it from 60hz- down.

Have you looked into using MLV or other deadening agents that aren't putting cld everywhere (dynamat et al)? I'm curious if someone has ever used a sheet of MLV + closed cell foam in place of the plastic weather barrier on the doors.

Also was looking into acoustical coating - essentially a mass layer painted on the chassis. One of these days I'll get around to sealing up my doors. I want to use concrete as part of a pseudo-box but I keep balking at screwing up my doors.
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Old 07 Sep 2011, 01:26 pm
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Default Re: The Wifes stereo build

Nice job! A bit too much speaker for me as I still need to use the hatch area to carry stuff...

What did you use for sound deadening and do you have any other pics of that?
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Old 07 Sep 2011, 01:46 pm
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Smile Re: The Wifes stereo build

Hey their xwing777,

Pretty slick work for sure man. That sir gets you a double shot of the all mighty coveted "Fro" which is reserved for only the coolest of the cool Mods on this Forum.



Only thing I might have done different might have been to upgrade the cosmetics a bit like maybe smoothing it over in glass and shooting it body color, or two tone grey and black , maybe leather, you know me. But when its all said and done, it won't make it sound any better.

Kinda with bobdole369 at least on the Dynamat. I have 4 boxes worth of Dynamat Extreme in mine, along with a rubberized undercoating and it makes a huge difference big time.

Sick work once again.
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Last edited by Candyman; 07 Sep 2011 at 01:53 pm.
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Old 07 Sep 2011, 02:33 pm
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Default Re: The Wifes stereo build

Damn nice set up! Im loving my type-r's and pretty sure she will too!
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Old 07 Sep 2011, 05:24 pm
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Default Re: The Wifes stereo build

Thanks guys for the comments

I didnt post all the pics showing the sound damping i did in more detail but theres edead throughout the car on all metal parts. Got some more pics of it gutted i will add later when i find them.

This material (like dynamat) is really only designed to prevent vibrations. It does very little to dampen the inside/outside sound. This is where the polyfill comes into play and deadens the sound. Also it can be removed if needed. Theres 1 full large bag (i think 10lb size?) in the hatch alone, 1 full bag in each side as well.

The battery is an AGM SHURiKEN SK-BT60 and measure 9"X8" and is 5 1/2" deep. It has 1500 cranking amps with a 60 amp hour rating. Fits perfectly where the pocket area is by building a simple shelf to sit it on. I got the idea from another cruiser owner on SMD forums.

The carpet material was chosen as this is her daily driver and is more durable than other materials. She does do shows though so a shiny fiberglass box would look better but i dont think it would hold up over time (scratches and chips)

Yeah the trunk area is useless now but its what she wanted

Slayer, yeah im a big fan of alpine typeR subs. While not as popular as they once were, if you give them breathing room you can get some serious bass out of them. Im still amazed at the tiny amps and how much raw power they can put out AND the fact you can stack them on top of each other without getting to hot.
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2003 cranberry 5 speed GT - Fishing with a sleeper Stage3 setup!

Last edited by xwing777; 07 Sep 2011 at 05:28 pm. Reason: typo
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