orljmh,
Thank a lot bro, when I posted the question, the answer thread wasnt post yet, sorry about that. Could you possibly take some picture of the bose speakers? I just currious to see how it look. But so far I think it doesn't have enough trebble. I want to change all the speakers soon and add a sub.
Thanks a lot for the fiberglass link,

Ratman

 

what happens if i just switch the speaker witha an 8omh speaker?

 

The speaker would "see" 1/4th the power.

The 8 ohm is a measure of resistance across the circuit. This resistance "resists" flow.

That may mean 1/4 the volume but that depends on other things like speaker sensitivity.

I hope this helps.



2004 G35 Coupe 6MT
Volk GT-7's/ TEIN Basics
Falken 245/35/ZR19 & 285/35ZR19
Kinetix Racing Camber Rods/ K&N Typhoon CAI

 

cool info..............

04.5 G coupe / TB/Willow / 5aT ( I do enough shifting with my bikes) / Premium / Splash guards / Trunk mat // 01 Yamaha R6 / 02 Yamaha R1

 

I just wanted to clear up a misconception I see on this otherwise very helpful page.

*You can not measure a speakers effective impedance by measuring its DC resistance with an ohmmeter!*

Speakers have very complex electrical characteristics (they are not just resisitive, they have a large inductive component as well as capacitive), and their impedance actually varies quite a bit over the audible frequency range.

Here is a good web page and impedance graph:
http://www.installer.com/tech/sit.html

They actually show you how to measure the impedance at different frequencies.

The DC impedance you measure with an ohm meter is just that - the DC (i.e. 0Hz) impedance. The DC resistance is almost always much lower than the AC resisitance. To find out what it is at the frequencies it will be used at (20Hz to 20kHz), you need a more sophisticated test.

As you can see from the graph, a "4 ohm" or "8 ohm" speaker is actually a wide range of impedances at different frequencies. Manufacturers typically specify the minimum or the average of this range when they pick a single 4 or 6 or 8 ohm value.

To get back to the original post - I don't think you can say for certain that these are 2 ohm speakers. Over the audible frequency range, they are likely to be 4, 6, or 8 on average, and only 2 or 4 ohms at DC.

Hope this helps,
Fred

 

When you replaced the door speaks and amp how did you do it. Do you have Double Din Conversion or did you just add the speakers and amp to the stock stereo?

 

First of all, my sound setup sounds fantastic--lots of car sound people have listened to it and think it was very well-done. I used the stock head unit because it's way, way too much hassle to recover all the steering wheel functionality with another unit (which would help the sound some, no doubt). My goal was a very stealthy install, so my whole install looks like a stock G35 all the way except for the big amp mounted to the back of the rear seat (still can't see unless you open the trunk). We did convert to RCA connections throughout, though. Remember, I disconnected the wimpy rear passenger speakers and replaced the 6x9s with high-end Boston Acoustics models to sound-match the ProSeries 6.5s in the front. Used an Eclipse EA3532 amp to drive everything (disconnected anemic Bose amp and put custom subwoofer compartment behind left rear wheelwell). Hope that helps. The car rocks--if you want monster subwoofer hit, though, you need to do something bigger with more power--I just wanted good musical reproduction that would fill out the BA Pros.
Tom

 

I was wondering if someone can help me. I am looking for a stock amp for the coupe. Does anyone know where I can get one??

 

Ummm so whats the deal are the Premium Audio speaks 4 ohm or 2 ohm? Theres conflicting posts in this thread :P please help! I want to install something better than the Bose soon.

Thanks

Proud 03 6MT owner :P

 

just wondering, if i wanted to change my tweeters or midrange in the front (either one) do i need to set the new pair with a crossover? or do i just pop the replacement in?

 

Here is a list of the actual sizes and impedences of the speakers from the coupe:

In the doors:

6.5" Midrange. Impedence: 2 ohm.
1" Tweeter. Impedence: 4 ohm.


In the rear side panels:

6.5" Midrange (Does not have a tweeter). Impedence: 2 ohm.


In the rear deck (with Bose system):

6" X 9" Woofers (No Tweeter). Impedence: 2 ohm.

Verified for the 2004 G35 Coupe with Bose, using a Fluke T5-600 Electrical Tester.


2004 G35 Coupe 6MT
Volk GT-7's/ TEIN Basics
Falken 245/35/ZR19 & 285/35ZR19
Kinetix Racing Camber Rods/ K&N Typhoon CAI<P ID="edit"><FONT class="small"><EM>Edited by ramborami on 05/17/04 09:34 PM.</EM></FONT></P>