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Discussion Starter · #1 ·
So part one of my quest to put in a real system is almost complete. Almost done with my custom made fiberglass subwoofer box. Just need to custom make a grill now that won't block the flip up grocery holder. <p>I really wanted a sub, but I didn't want a box laying around. Took some crude measurements and determined there was enough potential volume in the back right corner if I could make a custom box to make use of it. So I read up on custom fiberglassing techniques and took the plunge.<p>After the box was strong enough, I used water to measure the volume and was almost right on. My target was .60 cuft. I got .57. With some stuffing, I'm probably close to the sub's target of .75. Close enough that I can't hear the difference between the fiberglass box and a true .75 test box I made.<p>Subwoofer was $60 from crutchfield. Remaining supplies (resin, cloth, tape, brushes, etc) was probably another $80. Time, time, time, well, umm, uhhh, lots of it. Mostly adding layers of fiberglass till it was strong enough not to flex.<p>Don't ask about the rest of the stereo. Still work in progress. Still waiting for the head unit to be released. I couldn't wait though and I temporarily hooked up the front speakers and the sub to my trusty old yamaha 4x60 (good old clean undistorted power).<p>Wow...... And that's an understatement. The sound is awesome. I can't wait to get it all finished. It's fun sitting in the drivers seat listening to it. I was out there a while.<p>Anyways, here are the pics of the steps from start to finish. <p>Basically, tape it off, foil it, tape it off some more, foil it, seal car, add some resin and cloth, add more resin and cloth, wait, pop it out, add more layers now till it's strong, add a woofer ring, wrap front in fleece, soak that in resin, add more layers, add more layers, sand, wrap in carpet, and install!<p><br><IMG SRC="http://216.119.100.190/_sharedpics/xc90sub_01.jpg" BORDER="0"><br><IMG SRC="http://216.119.100.190/_sharedpics/xc90sub_02.jpg" BORDER="0"><br><IMG SRC="http://216.119.100.190/_sharedpics/xc90sub_03.jpg" BORDER="0"><br><IMG SRC="http://216.119.100.190/_sharedpics/xc90sub_04.jpg" BORDER="0"><br><IMG SRC="http://216.119.100.190/_sharedpics/xc90sub_05.jpg" BORDER="0"><br><IMG SRC="http://216.119.100.190/_sharedpics/xc90sub_06.jpg" BORDER="0"><br><IMG SRC="http://216.119.100.190/_sharedpics/xc90sub_07.jpg" BORDER="0"><br><IMG SRC="http://216.119.100.190/_sharedpics/xc90sub_08.jpg" BORDER="0"><br><IMG SRC="http://216.119.100.190/_sharedpics/xc90sub_09.jpg" BORDER="0"><p>pat<p>
 

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Re: Custom fit XC90 subwoofer. Success!! (pattyweb)

Now all you need is some duct tape to hold it in place. Hope is sounds better than it looks!
 

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Re: Custom fit XC90 subwoofer. Success!! (davelefc)

No duct tape needed. It's a good fit. That picture is before I cut off the excess carpet in back. With the grocery holder in place, it won't come out, but I can still open the grocery holder. I still do need to attach it somehow just to be certain it won't go anywhere and relocate the 12volt plug. Of course, if I don't relocate the plug or fix the bottom back so I can access the hook, someday I'll want to use them. If I do relocate and provide access, I'll bet I never use them.<p>No rattles. Doesn't boom. Sounds incredible. Enough to make me sit out there for almost two hours just listening to music. I don't think I ever would have just walked into the garage and decided to listen to my factory 'high performance' stereo otherwise. Biamping, and supplying the factory front speakers with good clean power yielded more of an improvement than I thought. On certain tracks, with certain voices and highs, they did show their weakness though. The XC90 is actually well sealed and sound proofed. I was amazed at the amount of bass I had inside, but how little I was hearing outside with everything closed.<p>Looks not an issue and wasn't a priority especially given that it's in the very back. Especially on a car where the exterior trim doesn't even line up. Or is that just my car? After sound quality, not giving up precious cargo space to a stand alone box was only other priority. We travel and use the third row alot. Need that space. And the kids want a dog....... that no doubt will find a way to chew into my box....<p>
 

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Re: Custom fit XC90 subwoofer. Success!! (pattyweb)

Excellent work!!! <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0"> <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0"> If there is only a way to hear the difference in sound quality via the forum.<p>Next step... reproduce about 100 of them and sell here or on ebay.<p>Cheers.
 

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Re: Custom fit XC90 subwoofer. Success!! (lazzerj)

Can you change the bass output for the sub via the menu on the stereo?
 

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Discussion Starter · #6 ·
Re: Custom fit XC90 subwoofer. Success!! (david)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>david</b> »</i></TD></TR><TR><TD CLASS="quote">Can you change the bass output for the sub via the menu on the stereo?</TD></TR></TABLE><p>No. This sub is NOT connected to the factory stereo in any way shape or form.<p>The ONLY way to ONLY add JUST a sub to the factory stereo and have that feature work is to purchase the OEM sub from Volvo. However, if you've got the 3rd row with AC, you then don't have a place to put it. <p>There was a post a while back by another member that purchased the OEM sub, took it apart, mounted the amp in the rear left well, and then just ran the speaker wires to his own stand alone box. I tried searching to post that link but search hasn't worked for a few days now, at least for me. I could do something similar to connect my sub to the factory head unit but I'm on a path where I'm just installing a whole new system.<p>pat<p>
 

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Here's a link to that DIY info<br><A HREF="http://www.mtwest.net/jraymond/xc90/subwoofer/index.htm" TARGET="_blank">http://www.mtwest.net/jraymond...x.htm</A>
 

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Re: Custom fit XC90 subwoofer. Success!! (pattyweb)

Any info on your head unit, tapping in & or using steering wheel controls, etc?
 

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Re: Custom fit XC90 subwoofer. Success!! (seattlexc90)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>seattlexc90</b> »</i></TD></TR><TR><TD CLASS="quote">Any info on your head unit, tapping in & or using steering wheel controls, etc?</TD></TR></TABLE><p>From the very niclely done <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0"> DIY instructions, it looks like it will require a dealer software install to activate the controls on the head unit's audio controls. (see Appendix A in the DIY @ the bottom.)<br>
 

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Discussion Starter · #10 ·
Re: Custom fit XC90 subwoofer. Success!! (seattlexc90)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>seattlexc90</b> »</i></TD></TR><TR><TD CLASS="quote">Any info on your head unit, tapping in & or using steering wheel controls, etc?</TD></TR></TABLE><p>Well, the 'plan' right now is to partially dismantle a Pioneer DEH-P880PRS and install it behind the face of an XC90 radio I got from a totalled XC90. The factory 'head unit' is very modular and comes apart very easy and I'm able to make use of all the buttons. The two knobs 'might' be an issue. The pioneer remote has all the buttons I need and I'm hoping to connect the volvo buttons to that. The unit was just released this past week and I'm waiting for pioneer to answer some questions for me (xm,bluetooth) on that unit before I buy it. Hopefully in the next two weeks I'll be getting to work on that.<p>There is a german company that makes an interface for the steering wheel controls. PAC-Audio also has one in the works but it's not released yet. However, I may just pass on reintegrating the steering wheels controls, because I actually think they are very poorly placed. I just don't like how they're placed and that I need to either look, defeating the purpose of steering wheel controls, or I need to feel around to find the button. I've pushed the wrong button before (even while just turning the car).<p>Just out of curiousity, who here drives with their finger tips on the FRONT of the wheel? How many of you hold the wheel in a fashion that doesn't require you to regrip or move your hand to access the controls? Or do you just grab the wheel and manage the buttons with your thumb? I've tried it with my thumb and either my hands are too big, or too small, it's just a pain and it's tiring trying to feel and 'find' the right corner to push with the one finger.<p>The one thing I really really miss from my 2k durango was it's steering wheels controls. It had a few buttons on EACH side of the steering wheel BEHIND the wheel. And the buttons were right where your INDIVIDUAL finger tips would rest. You could press a button without looking or feeling. And each button fell under a different finger. I just don't think you could provide an easier way to use those buttons than they did. <p>So, some options I've been looking at are to either buy the pioneer steering wheel remote and mount it backwards or I also found a very very small four button remote that I would just stick to the backside of the steering wheel. It comes with a small receiver that I would rig up to my buttons.<p><br>
 

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Discussion Starter · #11 ·
Re: Custom fit XC90 subwoofer. Success!! (spideyman)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>spideyman</b> »</i></TD></TR><TR><TD CLASS="quote"><p>From the very niclely done <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0"> DIY instructions, it looks like it will require a dealer software install to activate the controls on the head unit's audio controls. (see Appendix A in the DIY @ the bottom.)<br></TD></TR></TABLE><p>I've just built an enclosure. I have no way of powering it from the factory volvo system unless I also purchase and dismantle the volvo sub.
 

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Re: Custom fit XC90 subwoofer. Success!! (pattyweb)

<B>GREAT JOB!! </B><IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/embeer.gif" BORDER="0"> I have made a custom fiberglass enclosure before and it is no easy job. Looks solid. I used a Boston Pro series back when I did mine because it would run in a small box... Thanks<p>Todd
 

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Re: Custom fit XC90 subwoofer. Success!! (Colorado XC90 T6)

Agreed, very nice work...<p>Tim
 

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Re: Custom fit XC90 subwoofer. Success!! (Colorado XC90 T6)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Colorado XC90 T6</b> »</i></TD></TR><TR><TD CLASS="quote"> and it is no easy job.</TD></TR></TABLE><p>Very true. But I would not call it hard either. Just lots of time. I'd never done anything like this before although I have worked with resin.
 
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