Post by
samgauto »
https://forums.nicoclub.com/samgauto-u203818.html
Mon Jun 25, 2012 5:47 am
I forgot to take pictures of the two tweeter replacements but they dropped right in. The plugs are the same so I cut the plug off of my factory harness and connected it to the wires I ran from the amp to each tweeter. As stated before, I did not install the 3rd center dash tweeter as I did not want to cut into the dash and I don't know what if any obstructions I would have encountered. (I left the center tweeter output wires going nowhere and tapped up at the back of the amp) In the wiring diagram, I noticed that the base radio wiring has the left front door speaker and l/f dash tweeter connected together on the same output. Ditto for the right dash tweeter and door speaker. On Bose models, every output from the amp is separate, none of the outputs are shared. That being said, the only factory wiring I reused was the front door outputs. The amp out wires for the door speakers I ran to the back of the radio and hooked them up to what was the base output wires to the doors on my factory harness plug. This way I would not have to run separate output wires through the door jamb loom (although you have to run those on the rear doors since base models have no rear door speakers or rear door speaker output wires). Again this is why I did not tie into the base tweeter output wires (I ran separate tweeter outputs) because they are shared with the base front door speaker outputs.
Actually, I find that the installed Bose system in my 09 Altima to have more base and somewhat richer sound than my factory installed Bose in my 08 Maxima SL. I listened to the sound at each speaker and found that the 'muffled base' sound on the Maxima just comes from the rear woofers. All the other speakers seem to carry the mids and highs. On the Altima, I find that the front door speakers AND the rear woofers are putting out the base sounds. That is actually interesting since the rear door speakers are the same part number as the front door speakers. This would indicate that the amp itself is what is directing base to the front door speakers as well as the rear woofers. Not sure if a factory installed 07-08-09 Altima Bose owner could chime in here and say if that is the same on their car but that's how it is after the install on mine.