Notices
Audio & Video 350Z Mobile entertainment and other electronics

Rear Speaker Replacement

Thread Tools
 
Search this Thread
 
Old Aug 11, 2006 | 04:14 PM
  #1  
nothix's Avatar
nothix
Thread Starter
Registered User
iTrader: (27)
 
Joined: Jun 2006
Posts: 5,397
Likes: 0
From: Lafayette, LA
Default Rear Speaker Replacement

Ok, first of all I'd like to appologize for not being able to search and find a solution to my problem.

Problem:
Passenger rear speaker died. I pulled out the speaker and tested it, nothing. So, time to replace it. First of all I contact an car audio store and ask for replacement for my 32 ohm 40 watt 6.5" speaker. I proceed to contact other vendors and car audio companys. Not only does everyone act like I'm an idiot, no one has any sort of solution as well. The only option I'm left with is to contact Nissan and get a quote on a replacement speaker. They want $100 just for the damn speaker, and Everyone here says they suck. I do not know very much at all about audio, much less car audio. I dont know if there are better speakers out there for less or equivalent cost.

So, what do I do? I'd like to spend under $200 to solve my problem, but I can invest more money if need be.

My main problem is finding a 32 ohm speaker to replace this one... Do I even need a 32ohm replacement???

Thanks in advance for all the help!
Reply
Old Aug 11, 2006 | 05:13 PM
  #2  
mikeg8r's Avatar
mikeg8r
New Member
iTrader: (2)
 
Joined: Jan 2006
Posts: 771
Likes: 0
From: Venice, CA
Default

did you try asking the audio guys at the store what speakers work with your car? Or try crutchfield.com you can see what models will work. Also I don't think i've heard of a speaker that was 32ohm, but I guess there could be. Sorry I couldn't be more help.
Reply
Old Aug 11, 2006 | 08:56 PM
  #3  
nothix's Avatar
nothix
Thread Starter
Registered User
iTrader: (27)
 
Joined: Jun 2006
Posts: 5,397
Likes: 0
From: Lafayette, LA
Default

The audio guys couldn't get anything that would work in the place of the stock speaker, especially not 32 ohm. I tried crutchfield.com and the best they could do was a 16 ohm, but I doubt that is going to work much either.

Hope someone can stop by and shed light on my situation, thanks.
Reply
Old Aug 12, 2006 | 06:00 AM
  #4  
Paul350Z's Avatar
Paul350Z
Living in 350Z
Premier Member
iTrader: (1)
 
Joined: Mar 2005
Posts: 4,704
Likes: 2
From: Riverside CA
Default

You might just try around here looking for someone who will GIVE you a stock rear speaker for the cost of shipping.
Reply
Old Aug 12, 2006 | 03:21 PM
  #5  
nothix's Avatar
nothix
Thread Starter
Registered User
iTrader: (27)
 
Joined: Jun 2006
Posts: 5,397
Likes: 0
From: Lafayette, LA
Default

I've posted a WTB thread and have yet to recieve any replies.
Reply
Old Aug 12, 2006 | 05:24 PM
  #6  
mikeg8r's Avatar
mikeg8r
New Member
iTrader: (2)
 
Joined: Jan 2006
Posts: 771
Likes: 0
From: Venice, CA
Default

again, i'm not an audio expert but using ohms law:

watts = (volts^2)/ohm
volts^2 = 40 watts * 32 ohm = 1280
160 = 1280volts^2/8ohm
you should be able to replace the 32 ohm speaker with an 8 ohm speaker rated for at least 160 watts (assuming 40 watts is the max for the original speaker).

Of course I could be totally wrong about this too, but the physics says this should work without destroying the speaker
Reply
Old Aug 12, 2006 | 05:38 PM
  #7  
Paul350Z's Avatar
Paul350Z
Living in 350Z
Premier Member
iTrader: (1)
 
Joined: Mar 2005
Posts: 4,704
Likes: 2
From: Riverside CA
Default

Originally Posted by mikeg8r
again, i'm not an audio expert but using ohms law:

watts = (volts^2)/ohm
volts^2 = 40 watts * 32 ohm = 1280
160 = 1280volts^2/8ohm
you should be able to replace the 32 ohm speaker with an 8 ohm speaker rated for at least 160 watts (assuming 40 watts is the max for the original speaker).

Of course I could be totally wrong about this too, but the physics says this should work without destroying the speaker
Yeah but ... I^R=W

If the amplifier doesn't have the current ability to drive an 8 ohm speaker it will smoke itself - the lower impedance acting close enough to a short circuit to cause the amplifier to over drive. This is why some amplifiers are rated to 4 ohms and others down to 2 ohms or even 1 ohm.
Reply
Old Aug 12, 2006 | 06:38 PM
  #8  
skyydiver's Avatar
skyydiver
Registered User
iTrader: (1)
 
Joined: Aug 2006
Posts: 172
Likes: 0
From: Austin, TX
Default

maybe the reason you are seeing 32ohms is because of the speaker being blown. However, if 32ohms is the actual factory spec, than you need to get rid of both of your rear speakers and look into something better. Hey...how about Focal's...uh, nevermind. Budget constraint.

Seriously, Crutchfield.Com is a great place to start. A couple of other great places to buy audio components on line are:

http://www.sounddomain.com/

and

http://acaraudio.com/default.php

They can hook you up on some great deals!


-J
Reply
Old Aug 12, 2006 | 07:20 PM
  #9  
nothix's Avatar
nothix
Thread Starter
Registered User
iTrader: (27)
 
Joined: Jun 2006
Posts: 5,397
Likes: 0
From: Lafayette, LA
Default

Originally Posted by skyydiver
maybe the reason you are seeing 32ohms is because of the speaker being blown. However, if 32ohms is the actual factory spec, than you need to get rid of both of your rear speakers and look into something better. Hey...how about Focal's...uh, nevermind. Budget constraint.

Seriously, Crutchfield.Com is a great place to start. A couple of other great places to buy audio components on line are:

http://www.sounddomain.com/

and

http://acaraudio.com/default.php

They can hook you up on some great deals!


-J

32 ohm is labeled on the speaker and 31.5 ohm is what it tested.
40 watt is also labeled.

Another problem is, research has told me that the factory system has the same speakers all around (6.5" 32ohm 40watt). That would mean that I would need to change all 4 speakers and the amp, and that would run up quite a bill, and frankly I'm not sure if I could do all of it myself.


I think the solution is simple but annoying. I'll just have to waste $100 and order one from nissan. Is there anywhere I could go to directly order from nissan and avoid the actual dealership or something of the sort. I'm thinking that might save me at least a few bucks =/


Thanks all for the help, I appreciate the efforts ^_^
Reply
Old Aug 12, 2006 | 07:39 PM
  #10  
Ichigo's Avatar
Ichigo
Registered User
iTrader: (6)
 
Joined: Aug 2005
Posts: 1,622
Likes: 0
From: PA
Default

Dude, pm me your address, I will send you one, shippings on me...
Reply
Old Aug 12, 2006 | 07:48 PM
  #11  
mikeg8r's Avatar
mikeg8r
New Member
iTrader: (2)
 
Joined: Jan 2006
Posts: 771
Likes: 0
From: Venice, CA
Default

Originally Posted by Paul350Z
Yeah but ... I^R=W
If the amplifier doesn't have the current ability to drive an 8 ohm speaker it will smoke itself - the lower impedance acting close enough to a short circuit to cause the amplifier to over drive. This is why some amplifiers are rated to 4 ohms and others down to 2 ohms or even 1 ohm.
Hehe, yeah, that's why I said the speaker should be ok. Anyways, I guess that's the important question then, can the HU support 8 or 4 ohm speakers. Just because the stock rear speakers may be 32 ohm, doesn't mean the HU can't support other impedance speakers. There will be a max output (in voltage and current) that the HU can deliver and just because you put a 160w speaker on there doesn't mean the HU will magically produce 160w of power. It will still produce as much as it can and no more.

If we assume the max power output for the amp in the HU is 40w (to match the stock speaker) and lets use a more common speaker impedance of 4 ohm then
(I^2)*R = W
10amps^2 * 4ohm = 40 watts
so the HU would have to be able to deliver a little over 3 amps max. I don't know if it can do this, but I would think it could. Yes, if you routinely listened to your stereo at max all the time, you could easily overheat the system, but I have a feeling even if you put an 60w, 4ohm speaker in the back, at normal listening levels you won't have any problem with the stock HU.

Again though, this is all conjecture. I don't know what the ratings are for the stock head unit and it's not in the manual (service or owner's)
Reply
Old Aug 12, 2006 | 07:53 PM
  #12  
mikeg8r's Avatar
mikeg8r
New Member
iTrader: (2)
 
Joined: Jan 2006
Posts: 771
Likes: 0
From: Venice, CA
Default

Originally Posted by Ichigo
Dude, pm me your address, I will send you one, shippings on me...
hehe, well there you go. the funny thing is i bet lots of people have replaced their stock speakers and never gave it a second thought.
Reply
Old Aug 12, 2006 | 07:54 PM
  #13  
nothix's Avatar
nothix
Thread Starter
Registered User
iTrader: (27)
 
Joined: Jun 2006
Posts: 5,397
Likes: 0
From: Lafayette, LA
Default

I've been chatting with a rep from crutchfield and she tells me that I do not have an amp in the factory audio system unless it is a Bose system. I know I do not have a bose system, therefore i do not have an amp. Also she shows that the exact model of this Clarion speaker (28156) should be 2ohm, and suggests I replace it with another 2 ohm speaker. Does this sound correct? If so, which speakers would you suggest. Thanks
Reply
Old Aug 14, 2006 | 02:27 PM
  #14  
nothix's Avatar
nothix
Thread Starter
Registered User
iTrader: (27)
 
Joined: Jun 2006
Posts: 5,397
Likes: 0
From: Lafayette, LA
Default

bump
Reply
Old Aug 14, 2006 | 02:37 PM
  #15  
DIGItonium's Avatar
DIGItonium
Registered User
iTrader: (1)
 
Joined: Jun 2002
Posts: 4,836
Likes: 1
From: Kansas
Default

That doesn't make sense. 2ohm makes sense for a BOSE replacement since their speakers are rated from a minimum 1/2 - 1 ohm.

I had no idea the OEM speakers were rated 32 ohms because I had them replaced with aftermarket speakers real fast. Maybe that's why the rear speakers weren't so loud. Anyhow, I didn't care much about the HU, since I replaced everything not too long after.
Reply
Old Aug 14, 2006 | 05:28 PM
  #16  
ZmanZZZ's Avatar
ZmanZZZ
Registered User
 
Joined: Aug 2006
Posts: 146
Likes: 0
From: New York
Default

that's the smart thing to do
Reply
Old Aug 14, 2006 | 05:58 PM
  #17  
nothix's Avatar
nothix
Thread Starter
Registered User
iTrader: (27)
 
Joined: Jun 2006
Posts: 5,397
Likes: 0
From: Lafayette, LA
Default

Could someone suggest some easy-install and not too expensive speaker that would work with my Head Unit? I have a JVC KD-S890. Thanks!


(by easy-install i mean that it will fit in the factory whole without problems)
Reply
Old Aug 14, 2006 | 06:21 PM
  #18  
DIGItonium's Avatar
DIGItonium
Registered User
iTrader: (1)
 
Joined: Jun 2002
Posts: 4,836
Likes: 1
From: Kansas
Default

The easy part is picking out the head unit... the fun part is installing it. This car isn't the wost, IMO, to work on.
Reply
Old Aug 14, 2006 | 08:15 PM
  #19  
maturola's Avatar
maturola
Registered User
iTrader: (3)
 
Joined: Jun 2006
Posts: 191
Likes: 0
From: Jackson. MS
Default

Originally Posted by mikeg8r
again, i'm not an audio expert but using ohms law:

watts = (volts^2)/ohm
volts^2 = 40 watts * 32 ohm = 1280
160 = 1280volts^2/8ohm
you should be able to replace the 32 ohm speaker with an 8 ohm speaker rated for at least 160 watts (assuming 40 watts is the max for the original speaker).

Of course I could be totally wrong about this too, but the physics says this should work without destroying the speaker
Just as a NOTE: the OHMs you get from the Spekear is not R (watts = (volts^2)/ohm). The OHm you get fomr a speaker is Equivalent Impedance. whcih is Z and Z ~1/R. So ohm law doesn't apply directly to those values.
Reply
Old Aug 15, 2006 | 06:48 PM
  #20  
Luv4daZ's Avatar
Luv4daZ
Registered User
 
Joined: Aug 2006
Posts: 15
Likes: 0
From: Georgia
Default

yea, the most fun you can have is hooking up ur car.
Reply



All times are GMT -8. The time now is 06:07 AM.