I have an older pair of Kappas in my Ody and with an external amp they sound pretty good. But, it's all very subjective as you know. The reason I bought them was that in the place where I demo'd them, they were by far the smoothest and most balanced in the demo board. However, but a demo board and a car interior are two different worlds.

Sunil

 

Ok, now that I upgraded the speakers I am wondering what the next step may be I like the sound but would like to potentially add an amp. If I am keeping the HU stock, is a line output converter even necessary if an amp has speaker level inputs? I am pretty new to audio upgrades so could use some advice here. It seems that Pioneer GM-6400F amp has speaker level inputs, or is there something else missing?

Per Pioneer: "What, you DON'T own a Pioneer headunit? Well, we won't hold it against you. In fact we'll even help you build onto your system. The GM-6400F's speaker level inputs allow you to connect your OEM unit (or any unit that doesn't have the typical RCA-type inputs) without having to buy add-on adapters. SO, the install goes faster, you save money, and you've got a Pioneer amp in your vehicle."

 

Sorry for delay guys. I forgot about this thread. The following is what I ended up doing:

After replacing the door speakers as stated in the original post, I noticed incredible sound clarity, but not much bass response. To improve this, I felt I didnt need the line output converter or the amp to power the door speakers and scrapped that idea. But I did buy the Kicker sub and Pioneer amp I talked about in the first post. I also added a Stinger fixed line output converter for those. The result was incredible. It was exactly what I was looking for. A much better sounding system, not overpowering, but really nice sounding, and inexpensive. I spent about $600 total with installation. And the 10 inch sub was mounted in the cut out in the rear deck. I would highly recommend this if you want a cheaper improvement on the stock system.

 

Kudos on the install! Great to hear (no pun intended) that us non-Bose peeps have a few options. Was it a DIY or did you use an installer? Was any soundproofing used and if not is there any rattling? Thanks again, hoping to replicate what you did in a few months...

 

hello guys, I was curious to see replies to the last poster, I also have a 2007
Infiniti G35x, with no Navi, and I am looking to replace all my speakers, including tweets and add a subwoofer. Any thoughts out there guys would really be appreciated.

 

I would definitely go for speaker replacement at the very least. The head unit does a decent job with the new speakers. They will have better highs and mids (and possibly lows) and would sound 100% better than stock Blaupunkts. So far, I had the speakers replaced with the Pioneers and it really made a huge difference... I can actually hear the lyrics I also bought a Pioneer amp (as above) and the Kicker sub along with a line converter (passive) but haven't gotten around to the install yet. backdrft76 who did all of the above is really happy with the result, so my expectations are similar.

 

I hate my stock 2006 g35 coupe base head unit. I've tried quality speakers and a 12" sub, and it still sounds boomy (mid bass boom). I have to setthe bass at -5, and Treble +5 and it's still boomy.

 

Hey guys i have a 2008 sedan with bose.what r our otions with the bose system..I bought infiniti kappa perfect series for the door and i have a jl audio w7 12inch,Is there a way of upgrading the stock sub in the bose system without me installing this big *** w7 lol.i would like to save my trunk space but if not **** it i will install the w7.helpppp lol

 

subscribed...this is a great thread...someone should make a write up summing up all this information.

 

I have made a significant improvement in the stock head unit with subwoofer project. I also have Boston acoustic speakers in the doors, but thought it still sounded "boomy" (too much midbass).
However, I installed cap filters at the speaker that cut 0-200HZ, and WOW, what a difference.
So, what I have installed to date added to the BASE model 2006 G35 coupe head unit:

Boston Acoustic SR65 door speakers

Add Amp, to tap the signal for a sub

JL Powerwedge Max 12"

Scosche 0-200 HZ filter

Soon to come: Rear Boston Acoustics SR65 speakers for the back seat area.
also with Stinger 0-300HZ Bass Blockers.

Eventually, I will upgrade the head unit, and amps for the 6.5s but this will carry me for a little while.