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Old 08-04-2011, 09:18 AM   #1
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Interesting post. I appreciate your honesty. I figured there could be an issue with the Bose 5.25 woofers so that is why I went ahead and purcahsed two kicker 5.25 (4 ohm) woofer. I will probably load the box with these and may move the Bose 2 ohms to the doors or even sell the Bose 5.25s.

I'm curious as to what the enclosure will sound like with the kicker components in there. I heard about someone putting focal components in their bose unit and ended up being satisifed.They also added the unit after the fact and upgraded their deck but did not change the factory amp. Again, I am no audiophile, so I do not need earth shattering bass, just looking for a slight improvement. Think I can get it done with the kickers?
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Old 08-04-2011, 11:15 AM   #2
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Pacileo,

I have the bose rear deck with Focal Utopia Be subs. It going to take A LOT of tunning and proper equipment to make that box sound good. I invest 7k into my system just to get the right sound and at the end of the day was it worth it...................propably not. Don't get me wrong my system sounds GREAT but not what 7k in a full sized non convertible car would sound like. Fact is that the boxster is not acustics friendly and no matter what you do you wont be 100% happy.

With that said, once you open the Bose box up make sure you have a new seal to put around the edges as the original seal wont be as tight once broken.

I attached a diagram of my car just for reference.

Oh and here are pics of my install...
http://s338.photobucket.com/albums/n430/JDeMircift/Porsche%20Stereo/

Good Luck!
James D
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2001 Boxster Artic Silver / Black Interior
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Old 08-04-2011, 11:32 AM   #3
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Quote:
Originally Posted by Pacileo01S
Interesting post. I appreciate your honesty. I figured there could be an issue with the Bose 5.25 woofers so that is why I went ahead and purcahsed two kicker 5.25 (4 ohm) woofer. I will probably load the box with these and may move the Bose 2 ohms to the doors or even sell the Bose 5.25s.

I'm curious as to what the enclosure will sound like with the kicker components in there. I heard about someone putting focal components in their bose unit and ended up being satisifed.They also added the unit after the fact and upgraded their deck but did not change the factory amp. Again, I am no audiophile, so I do not need earth shattering bass, just looking for a slight improvement. Think I can get it done with the kickers?
Just because the "picky-ness" of BOSE, I think the Kickers would sound better. However, the Kickers might need more air space than your box allows.
Airspace changes frequency responce for the speakers. To overcome this you will need to stuff the speaker enclosure with some poly fill (Walmart fabric department). This will slow down the soundwaves to immulate a bigger enclosure area for airspace. I would research on how much airspace your Kickers need and compare it to how much airspace your enclosure has. Formula for airspace: Length x Width x Height= cubic inches/feet
On another note: Unless your amp has a built in crossover that you can use for your kickers, I would HIGHLY recommend a passive crossover (least expensive) or a new amp with a built in crossover. A passive crossover connects in between the amp and the speaker. A crossover is as basic as a coil ($20) to a crossover network ($100). This will eliminate unwanted frequencies to your Kickers. e.i. 10khz and above. You don't want high frequencies going to your Kickers, only mid-midbass.
You might want to check if your head unit has a dedicated output for selectable crossover. I know mine does.
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Old 08-05-2011, 05:01 PM   #4
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Thank you all for the help and insight. I am going to start my project tomorrow. I'm going to continue doing some research on the kicker's specs and see what I can dig up. I will keep everyone updated as I begin the install. thanks everyone!
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Old 08-09-2011, 08:37 PM   #5
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Project Finished

So I just wanted to post and let everyone know my install is complete.
IT sounds unbelievable, I really lucked out. So for anyone looking to do a similar install for a resonable cost here it goes.

I bought a used bose sub box $200- pulled the bose speakers, did some minor customizing, fit the Boses in my doors (pulled the old haes speakers from doors). The Bose speakers actually really make a huge difference and they are also 2 ohm like the orginal Haes (for reference)

Loaded the Bose box with two 5.25" kicker DS speakers (4 ohm), ran a pair + - directly into my new Head Unit right side rear hook up, ran another + - to the other side for the highs (left rear hook up)- $30.00 speakers wire free, (had extra laying around)

Got a wiring harness kit from a seller on Ebay with a nice porsche mounting plate to tie in my dash and door speakers w/factory amp- $160 (Very Simple and straight forward)

Got a Pioneer AVIC brand new-(steal) found on ebay- still boxed never opened $260.

*** Important the Head unit really made most of the difference- when I put the Bose Speakers in the doors prior to installing the Head Unit they only sounded slightly better.

I am also sure if I hooked the rear Bose box and Highs directly to the factory radio they would have also not sounded to hot. I believe with the rears on the factory radio it is a direct connect and the factory HU is only delivering around 16watts

Any additional questions-feel free to ask
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