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a car woofer with your surround?


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alaisneo 
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Posted: November 07, 2009 at 4:12 PM / IP Logged  
I have a 15inch Memphis woofer that im going to be putting in my house. I want to run it on my surround, vr-407 kenwood. The problem is that it only has the black outputs to goto another amp. I think this is digital some units have analog you know - + I was wondering if it were possible to hook this up another way on this unit and still get all my lows and 5 other speakers?
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DYohn 
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Joined: April 22, 2003
Location: Arizona, United States
Posted: November 07, 2009 at 6:36 PM / IP Logged  
You will need a home subwoofer amplifier for your subwoofer, the receiver will not power it.  Does that receiver have a subwoofer line-level (RCA) output?
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alaisneo 
Member - Posts: 27
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Joined: May 18, 2009
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Posted: November 07, 2009 at 6:47 PM / IP Logged  
It has a single subwoofer rca output (color coated black)
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i am an idiot 
Platinum - Posts: 13,667
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Joined: September 21, 2006
Location: Louisiana, United States
Posted: November 07, 2009 at 7:51 PM / IP Logged  
There is nothing digital about your subwoofer output.  It is black and has only one jack because it is a mono output.  Some units do have a stereo output.  I think you were referring to a red and white RCA when you said + & -.  If you have an old stereo reciever laying around, you can use that as an amplifier for your subwoofer.  Simply connect the black jack on the back of your surround receiver to the left CD input of the reciever you plan to use as an amp.  Connect your woofer to the left channel of the A speaker terminals. 
The Memphis woofer, is it single or dual voice coil?   What is the impedance of the coil(s)?
alaisneo 
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Joined: May 18, 2009
Location: New York, United States
Posted: November 08, 2009 at 2:05 PM / IP Logged  
2 x 2 are the coils ima drop it to 4 my stereo is stable at 8 and 4
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DYohn 
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Joined: April 22, 2003
Location: Arizona, United States
Posted: November 08, 2009 at 3:47 PM / IP Logged  

alaisneo wrote:
2 x 2 are the coils ima drop it to 4 my stereo is stable at 8 and 4

I have no idea what you mean... but it is not a good idea to power your sub from the amps in your receiver.

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alaisneo 
Member - Posts: 27
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Joined: May 18, 2009
Location: New York, United States
Posted: November 08, 2009 at 4:17 PM / IP Logged  
The sub has 2 coils each at 2 ohm. Im going to bridge it to 4. I have a home amp that im going to put to it. Your saying that I should not do this?
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i am an idiot 
Platinum - Posts: 13,667
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: November 08, 2009 at 6:46 PM / IP Logged  
If the receiver you have laying around has  a problem with the 4 ohm load, it will let you know.  Some older units were not stable into a 4 ohm load, but they did have some awesome protection circuitry that would shut it down if it saw a problem. 
j.reed 
Copper - Posts: 716
Copper spacespace
Joined: January 05, 2009
Location: Arkansas, United States
Posted: November 09, 2009 at 12:16 AM / IP Logged  
If you have a little money setting around you could use a amplifier which works all the way down to 2ohm per channel. Like this crown amp for an example.
http://www.guitarcenter.com/Crown-XLS-202D-Power-Amplifier-103635520-i1145680.gc
This is only an example. Im sure there are better places to buy. Maybe this will help put you on the right path though.
a car woofer with your surround? -- posted image.
alaisneo 
Member - Posts: 27
Member spacespace
Joined: May 18, 2009
Location: New York, United States
Posted: November 11, 2009 at 6:52 PM / IP Logged  
I tryed that and it did not work???? The old stereo I have the receiver is separate from the amplifier. I could not get it to work what am I doing wrong. I rn the mono bass out into the right cd input. Then I have a front and rear output that goes to the amp I did that with just the right channel. And I tried ever speaker output does not work.
I love sound
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