I'm running the Bose system with the front components changed to
4 ohms (PolksMomo) speakers being driven by a 2 channel AMP on a 03 sedan.

Would swapping out those rear door speakers to some 2 or 3 way
2 ohms speakers such as Kappa's make an improvement, the Bose
stuff just looks so cheap.

GBoy

 

Just for clarification (and I know this has been covered over and over again)...

Front door components and backseat side panel 6.5" speakers are stock NISSAN speakers, NOT Bose.

The only Bose stuff in the "Premium System" are the rear shelf 6x9's and Bose amp in trunk.

To answer your question, any replacement of the stock speakers, even the Bose ones would be an improvement. The stock HU (arguably manufactured by Clarion) is decent enough to run aftermarket amps and speakers. But to definately get optimal ideal sound quality, you want to swap out your stock HU and do a DD conversion. But, IMO and others as well, the speakers in our stock system is truly the limiting factor in sound quality.

There are some audiophiles that say you really only need quality front components and use the less expensive aftermarket speakers in the rear for fill. If you have a sub in the trunk, there are some that say leave the 6x9's out of the rear shelf and use them as open ports for your sub in the trunk.

Personally, I have Perfect 6.1's in the front, Eclipses 6.5"s in the backseat and Kappas 3-way 6x9's in the rearshelf and the Infinity Basslink in the trunk. Overkill? Maybe, but I'm happy.

Hope this helps....
doc

2004 G35 Coupe AT DG / Toyo Proxes / Stillen CAB / GroundingGear Equipped / Z tube (w/o AC line rub ) / Crawford Plenum / HKS Hi-Power Ti / DD conversion / Panasonic 7500BT HU / MTX Thunder amps x 2 / Infinity Basslink / Infinity Perfects 6.1 & Eclipses 6.5's & Kappas 6x9"s / DigitalWheelz Xenarc 7" screen / Pyle DVD HU (upper glovebox) / Escort Possport 8500 / PIAA Extreme Whites throughout / Hotchki Swaybars & Sport Coils / & a partridge in a pear tree

 

I drive a sedan, and I tossed the original speakers that were in the
front doors and I just remmembered they looked so cheap..Basslink
maybe that would fit in the trunks with my golf clubs. Some tech
guy said get the Bazooka..

 

Ahh....the Bazooka, I remember that came out when I was in high school back in the late '80's...lol. I don't know the quality of the Bazooka but I think they are quite big.

You mean these stock crappy speakers???
<a href="http://imageshack.us"><img src="http://img48.imageshack.us/img48/4498/image004yy9.jpg" border="0" alt="Image Hosted by ImageShack.us"/></a><br/><a href="http://g.imageshack.us/g.php?h=48&i=image004yy9.jpg"><img src="http://img48.imageshack.us/img48/4498/image004yy9.3650503bbe.jpg" border="0"></a>
<a href="http://imageshack.us"><img src="http://img140.imageshack.us/img140/1643/image003qz7.jpg" border="0" alt="Image Hosted by ImageShack.us"/></a><br/><a href="http://g.imageshack.us/g.php?h=140&i=image003qz7.jpg"><img src="http://img140.imageshack.us/img140/1643/image003qz7.85d153449b.jpg" border="0"></a>

FYI, this is what the Bose amp looks like....
<a href="http://imageshack.us"><img src="http://img140.imageshack.us/img140/8656/image001kc0.jpg" border="0" alt="Image Hosted by ImageShack.us"/></a><br/><a href="http://g.imageshack.us/g.php?h=140&i=image001kc0.jpg"><img src="http://img140.imageshack.us/img140/8656/image001kc0.5a3a1ab7eb.jpg" border="0"></a>

Now, compare those stock speakers to the new JL ZR525 separates that cost $850!!! lol
<a href="http://imageshack.us"><img src="http://img140.imageshack.us/img140/25/h136zr525csfcm3.jpg" border="0" alt="Image Hosted by ImageShack.us"/></a><br/><a href="http://g.imageshack.us/g.php?h=140&i=h136zr525csfcm3.jpg"><img src="http://img140.imageshack.us/img140/25/h136zr525csfcm3.3ad0637558.jpg" border="0"></a>

doc

 

Those cheap speakers look familiar, funny My Bose AMP is black.

Bet you those JL puppies sound pretty good for 850$, I only paid around
150$ for my Momo's, would those JL's sound that much better.

GBoy

 

That bose amp is from a coupe. The sedan Bose amps are black, are shaped differently, and are located in a different spot.

The JLs wouldn't sound $700 better than the Momos in your system. Your car should sound fine the way it is.

 

Do you even hear your rears?

 

.....when I'm playing Die Hard or Star Wars in my DVD player with 5.1 surround sound.....I surely do!!!!!!
(of course, I am in park while it is playing.... )



doc

 

I have 2 way kappa 62.7i's for the rear sides and it is a huge improvement over stock

Putting 3 way 6x9's in the rear deck is useless if you are running off the stock bose amp. It only outputs bass to those speakers so only the woofers are going to function.

I've got 2 way kappas there now that i did fully wire with the crossovers for future post bose amp use but I know for now the tweeters aren't getting any signal.

 

I drive a sedan, so would sound improve if I replace my stock rear door
speakers to Kappa 2 ohms speakers, or is it just fill, seems to me it could be much cleaner fill, just not sure.

GBoy