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-   -   My highly unusual (weight/practically focused) stereo project (http://forum.e46fanatics.com/showthread.php?t=976780)

Obioban 03-18-2013 09:26 AM

My highly unusual (weight/practically focused) stereo project
 

terzinator 03-18-2013 12:26 PM

Cool stuff. How much weight were you able to lose?

I don't know that I'd do a stereo project to eliminate weight. I think if I laid off pizza and beer for a while, I could shed 25 lbs.

Obioban 03-18-2013 01:40 PM

Quote:

Originally Posted by terzinator (Post 15260933)
Cool stuff. How much weight were you able to lose?

I don't know that I'd do a stereo project to eliminate weight. I think if I laid off pizza and beer for a while, I could shed 25 lbs.

Well, the stereo isn't the only place I'm making my car lighter, it's a comprehensive effort across the board. Also working on myself, but for wedding pics and to make the car lighter :loco:

Total project loss was ~17 lbs, ~12 of which was due to the stereo reduction.

There's very few huge weight loss points on this car, particularly if you're not willing to give up civility (I'm not). Little projects like this don't seem like a lot alone, but do several of them and suddenly you've made a significant difference.

Currently my goal is to get the car to <36 weight with greater than e9X (M3) power (NA).

terzinator 03-18-2013 02:39 PM

I have a 325 Touring, so trimming a few lbs from the car is kinda irrelevant for me. (Half the time I have groceries in the back!)

Obioban 03-18-2013 03:09 PM

Not sure why weight loss would be any less meaningful on a touring (or why you like bolding so much)? :hmm:

terzinator 03-18-2013 05:50 PM

Bold for emphasis. It's there, and it's free. One click and voila. I don't use it all the time, because then it would get predictable.

Anyway, I hear ya on weight, and it IS meaningful.

All's I'm saying is that I don't think I'm going to seek weight reduction from stereo equipment. I would be far more interested in choosing audio components that achieved the highest possible sound quality, rather than choosing them based on their lack of heft. (For example, bigger magnets in speakers often result in richer sound.)

PS: 16" wheels are lighter than 18" wheels, but you don't see many folks choosing 'em for their E46's these days! (Even if they cleared the brakes!)

PPS: I don't have a sunroof, and I have manual seats. That's gotta save a few lbs. right there, no?

Obioban 03-18-2013 06:31 PM

Quote:

Originally Posted by terzinator (Post 15262200)
Bold for emphasis. It's there, and it's free. One click and voila. I don't use it all the time, because then it would get predictable.

Anyway, I hear ya on weight, and it IS meaningful.

All's I'm saying is that I don't think I'm going to seek weight reduction from stereo equipment. I would be far more interested in choosing audio components that achieved the highest possible sound quality, rather than choosing them based on their lack of heft. (For example, bigger magnets in speakers often result in richer sound.)

PS: 16" wheels are lighter than 18" wheels, but you don't see many folks choosing 'em for their E46's these days! (Even if they cleared the brakes!)

PPS: I don't have a sunroof, and I have manual seats. That's gotta save a few lbs. right there, no?

No sunroof wagon is awesome!

Power seats are 2 lbs per seat heavier than manual-- less kickass.

I have the smallest wheels will clear my brakes (and my brakes are significantly lighter than stock).

Nothing I chose has reduced sound quality vs stock. The only thing I really compromised was rear passenger sound quality-- should be improved in the front, plus the dsp interface :). Magnet strength is what matters-- not weight... Which is why I used speakers with expensive but strong magnets.

Mc 007 03-18-2013 07:20 PM

Obioban always on work :-)

eljay 03-20-2013 08:31 AM

Nice! I'm bookmarking this to learn more about what I gotta do about my audio situation. I'd like to do a 6-speaker setup without a sub, so your setup and pics give me some idea on how to clean up what I have and hide everything.

Looks nice and hidden!

Obioban 03-20-2013 04:54 PM

Update: Sounds awesome :D.

Significantly better than stock HK. Certainly no booming bass, but there is a base range, unlike stock, which is exactly what I was going for. Now I can hear the entire song :rolleyes:

Not even noticeable that there's no rear speakers :)

basketthis 03-21-2013 08:17 AM

Thanks for this. Interested in pics of the photoelectric license plate cover. :D

bmwmen 03-21-2013 10:30 AM

Quote:

Originally Posted by Obioban (Post 15260355)
Unlike most stereo projects, the focus of mine was not particularly to improve sound quality (though that should be a nice perk of it). My goals were as follows:
1) Increase trunk space
2) Reduce the total weight of the car
3) lower the COG
4) recover some 50/50 weight distribution

......

Result:

http://www.lindvigs.com/obioban/stereo/IMG_4805.jpeg

And bolted down:

http://www.lindvigs.com/obioban/stereo/IMG_4793.jpeg

......

What kind of speakers are these? What specs?

Obioban 03-21-2013 11:04 AM

Polk 6501s.

I actually removed the boom mat from the back of them yesterday.

bmwmen 03-21-2013 05:40 PM

Thanks for the answer. How do you like them? It looks really good i must say. Appreciate the work and effort you put in the installation and car. It are the details that matter i think!

Obioban 03-22-2013 06:26 AM

Quote:

Originally Posted by bmwmen (Post 15272881)
Thanks for the answer. How do you like them? It looks really good i must say. Appreciate the work and effort you put in the installation and car. It are the details that matter i think!

No complaints, they sound great :D

Obioban 10-11-2013 11:16 AM

So, the CSL thread inspired me to get off my ass and finish this project. I changed to this sub:

http://www.pioneerelectronics.com/St...ront_large.jpg

Which only weights 4 lbs.

To get it to fit into the stealthbox housing, I had to grind ~.5cm of metal off the outside of the speaker, ~.5cm of material off the inside of the stealthbox, and make new mounting holes inside the stealthbox, but it all worked out.

Amazingly, it actually make more bass than my previous setup :clueless:

Expected this to be a 1 hour project, ended up being more like a 6 hour project. Still, car is lighter, so I can't complain!


http://i1010.photobucket.com/albums/...ps91f959db.jpg


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