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how do you identify blown speakers?


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dk77 
Member - Posts: 11
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Joined: August 24, 2005
Location: United States
Posted: May 23, 2007 at 11:30 PM / IP Logged  

OK...so I've got a '91 Nissan Maxima with a cut harness.  Put everything together (used two 8-pin Deutsch DT connectors) and no sound.  Identified the amp wire and connected to remote.  The back speakers sounded terrible (they're the amped ones, I believe) and the fronts sounded fine - for a couple of moments.  The right front quit working after a couple of moments.  The front left is the only one putting out decent sound.  Checked the connections of the right front and everything checks out OK. 

I'm sure the rear noise is due to the speakers being amped, but I haven't seen any bypass harnesses available.  I must say I'm a little perplexed.  I'm going to the dealer to get the wiring diagram for the Bose system to ensure I have connected everything properly.

Anyone have any experience with this year/model?  Any input would be appreciated.

dwarren 
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Posted: May 24, 2007 at 12:05 AM / IP Logged  

Often times Bose amplified systems place the amp right next to the speaker. I just did a Pathfinder today that required an amp bypass. The two front door speakers had separate amps in the doors. The amps were bad, but the speakers were fine (like you described they sounded terrible). I however was unable to locate the amp for the rear speakers, but they worked and sounded well enough.

Other wise, a meter set to read ohm's hooked up directly to the speaker will do the trick.

DYohn 
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Joined: April 22, 2003
Location: Arizona, United States
Posted: May 24, 2007 at 3:43 PM / IP Logged  

You can also sometimes tell if a speaker has been blown by the look of satisfaction on its face and if it has a craving for a cigarette. how do you identify blown speakers? -- posted image.

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dwarren 
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Posted: May 24, 2007 at 3:57 PM / IP Logged  
DYohn wrote:

You can also sometimes tell if a speaker has been blown by the look of satisfaction on its face and if it has a craving for a cigarette. how do you identify blown speakers? -- posted image.

Wow, quite a bold statement although pretty funny. I think your membership may be suspended for a little whilehow do you identify blown speakers? -- posted image.

DYohn 
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Joined: April 22, 2003
Location: Arizona, United States
Posted: May 24, 2007 at 5:31 PM / IP Logged  
You are right.  I will ban myself.
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capt_james 
Member - Posts: 5
Member spacespace
Joined: May 25, 2007
Location: United States
Posted: May 25, 2007 at 7:52 PM / IP Logged  
dwarren - that WAS the Moderator.  LOL
dwarren 
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Posted: May 26, 2007 at 2:19 AM / IP Logged  

capt_james wrote:
dwarren - that WAS the Moderator.  LOL

I know. That was why I said it.how do you identify blown speakers? -- posted image.

KarTuneMan 
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Joined: December 14, 2004
Location: Isle Of Man
Posted: May 27, 2007 at 10:36 AM / IP Logged  

listen to all this jiborish..... with a marginal disreguard for the poor boys question.... At least dwarren attempted to answer.

GUY'S    can I play too?how do you identify blown speakers? -- posted image.

dk77 
Member - Posts: 11
Member spacespace
Joined: August 24, 2005
Location: United States
Posted: May 28, 2007 at 10:07 PM / IP Logged  

Got the system functioning correctly today.

The rear speakers had an amp right next to the speakers.  I removed the speaker inputs to the amps and connected them directly to the speakers.  The front speakers have the amp located inside the ported enclosure for the speakers.  I reconnected the inputs directly to the front speakers, and everything sounds fine.  No wonder a bypass harness isn't available.  You can't bypass the amps using a harness as there are no connectors between the speakers and their respective amps; it's a hardwired connection. 

The only thing I found odd was the resistance of the coils.  The resistance of the speakers was only 1.2 ohms each.  They work fine, but that seems to be pretty low.

The only look of satisfaction was on MY face.  But I don't smoke.

soultinter 
Copper - Posts: 170
Copper spacespace
Joined: January 16, 2004
Location: United States
Posted: May 29, 2007 at 8:48 PM / IP Logged  
supposedly not uncommon for bose to have a weird resistance figure for their speakers, I thought it was usually @ 2 ohms. Are you installing an aftermarket deck or reinstalling the factory or other?
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