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Added 2 speakers/ sound cutting out


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Echo Whiskey 
Member - Posts: 3
Member spacespace
Joined: June 24, 2004
Posted: June 24, 2004 at 8:37 AM / IP Logged  
I am looking for some input from the experts.  I have a Sony CDX-CA720X Stereo/CD player which has worked fine with only two speakers until yesterday.  I installed two additional speakers (Sony XS-MP61) and now the stereo cuts out when I turn the volume up to a good listening level.  I have not touched any of the existing wiring, I added the speakers using the speaker wires that came with them.  What gives?
thepencil 
Gold - Posts: 1,526
Gold spacespace
Joined: December 16, 2002
Location: Canada
Posted: June 24, 2004 at 9:15 AM / IP Logged  
You can hook up 4 speaker to your cd player. 2 fronts and 2 rears. From your post, it look as if you are hooking up more than one speaker on the same speaker line. You are dropping the impedence too low for the cd player to handle. The cd will cut in and out to protect itself from further damage.
To remedy the "cuts out when I turn the volume up to a good listening level". You can tap your new speaker in to the 4 sets of speaker output of your cd player. You should be able to find two sets that are not being and just tap it in there. The speaker output wire are mark with the colour grey,grey black,white,white black, purple,purple black, green and green black.
Be careful whose advice you buy, but be patient with those who supply it.Added 2 speakers/ sound cutting out -- posted image.
Echo Whiskey 
Member - Posts: 3
Member spacespace
Joined: June 24, 2004
Posted: June 24, 2004 at 9:28 AM / IP Logged  

Pencil,  I already have two speakers up front, connected to the white & WHITE/ black and grey & grey/black wires.  What I added was two speakers to the rear via the green & GREEN/ black and purple & PURPLE / black wires.  I know that they are wired according to the Sony schematic but I cannot determine why it is cutting out.  Everything is STOCK, Sony Stereo and Sony speakers.  I am not trying to build a "POWER" system.  I am NOT adding an Amp or Subs or anything like that.  I ONLY want to hear music coming from the rear!

thepencil 
Gold - Posts: 1,526
Gold spacespace
Joined: December 16, 2002
Location: Canada
Posted: June 24, 2004 at 10:16 AM / IP Logged  
Are you connecting the speaker with speaker terminal or just twisted the wire on to the speaker? If the connection come loose they can give you the cutting in and out affect.
Check your grounding on the cd player. It is the black wire. Make sure you have a good connection to the chassis of the car.
Be careful whose advice you buy, but be patient with those who supply it.Added 2 speakers/ sound cutting out -- posted image.
Echo Whiskey 
Member - Posts: 3
Member spacespace
Joined: June 24, 2004
Posted: June 24, 2004 at 10:25 AM / IP Logged  
The speakers are connected using the standard "push on" terminals and the cd player is still grounded the same way it was two days ago.  As I said, I have not touched ANYTHING on the cd player as far as wiring goes except the speaker wires.  I have ONLY added two rear speakers.
thepencil 
Gold - Posts: 1,526
Gold spacespace
Joined: December 16, 2002
Location: Canada
Posted: June 24, 2004 at 10:36 AM / IP Logged  
If everything that you have done is correct. I can only think that the headunit is the problem.
Have you try connecting just the front speaker to the rear speaker output to see if the problem is there?
Be careful whose advice you buy, but be patient with those who supply it.Added 2 speakers/ sound cutting out -- posted image.
kgerry 
Platinum - Posts: 3,455
Platinum spaceThis member consistently provides reliable informationspace
Joined: February 07, 2004
Location: Saskatchewan, Canada
Posted: June 24, 2004 at 11:10 AM / IP Logged  
it's either going to be a pinch or short on a speaker wire or else the HU is shutting down thermally... unplug the harness at the back of the HU and meter all speaker wires for continuity to ground, if you dont get a reading at all that only really leaves a HU output problem.... either it doesnt like the new impedence and is shutting down or else it is running hotter than it should the the thermistor circuit is shutting the output stage down to prevent a melt down.... either way you may need to add an amp for your rears and not use deck power
Kevin Gerry
Certified Electronics Technician
MECP First Class Installer
Owner/Installer
Classic Car Audio
since 1979
promodeepcycle 
Copper - Posts: 152
Copper spacespace
Joined: October 17, 2003
Location: United States
Posted: June 24, 2004 at 11:43 AM / IP Logged  
your deck could push 2 spkrs just fine with a bad ground ... check the ground wire on the back of the deck .. re-ground it make sure that wire goes to a good ground..
dont be a pet monkey ..use your dmm
dalmyd1 
Member - Posts: 27
Member spacespace
Joined: February 13, 2004
Location: United States
Posted: June 25, 2004 at 2:47 AM / IP Logged  
Did you check to see if the terminals for the newly installed speakers are grounding???  That could also be your problem!

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