[Glynn]

Bose Speaker Nominal Impedance

In preparation for my audio system upgrade, it seems like I read every stereo-related thread on this forum. One thing I noticed was the different assessments of the stock Bose speakers' nominal impedance. Well, I finally got all of my speakers replaced this weekend, and I took the opportunity...

www.ssforums.com

Scosche SAGMHR-634 Speaker Mounting Brackets

Install 6-1/2" or 6-3/4" speakers in select 2005-up vehicles

www.crutchfield.com

Pick 4 ohms

CDT Audio ES-6CV

You will want to upgrade the tweeters too. If you do just the fronts, you'll find the mid-range is much clearer and the treble will sound muddy in comparison. I ran it this way for a bit before I did the tweeters.
I recently upgraded everything but the rear deck speakers and it's all running through the factory hardware. I used simple filters, or "bass blockers", with my new tweeters and it all sounds great. It could use more bass, but I don't feel like dealing with the rear deck given the options out there.

I have no experience with the PowerBass speakers. I can say in my experience, putting components in the lower door where they aren't originally does move the soundstage lower. My GTO is setup in the way you're thinking and it needs the stock tweeters changed out. SS tweeters are better than the GTO, but not by much.

For me, the Bose DSP is hit or miss and I alternate between Normal and Centerpoint depending on the song.

 

[Glynn]

Thanks Glynn! This is helpful but may add to my confusion, probably in the same way most folks reacted when they saw those readings. Did you get a drop in volume by going to the 4 ohms?

Does that also mean that any 4 ohm set that fits will work well? Kicker, JL, Focal?
Did you install separate tweeters or did you use the tweeters from a component set?

I also had a GTO but I never got into the speaker system. I wanted to but never got around to it, mostly focusing on performance mods.

To clarify, I have to replace my front door speakers. My passenger one is blown. I went to a local shop here in West Chester, PA but I ended with a $3k quote to upgrade everything. I get the same answer everywhere I go. "You need to do everything at once."

I went with the round ohm numbers from that thread and didn't notice any significant volume difference. Max volume for me is in the teens usually. Below 10 is actually clear and enjoyable if it's a quiet drive.

My GTO and SS got speaker upgrades this year and I wish I did them both a long time ago. I blame my Miata's Bose system for sounding like crap but being vastly improved by just door speakers and dynamat in the doors. Once you open Pandora's box...