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4ohm dvc sub to a 4ohm stable mono amp?


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porschedrifter 
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Posted: April 01, 2010 at 1:39 PM / IP Logged  
Ok. Last night I was a little tired and ordered a DVC sub instead of a SVC accidentally.
I'm building a little system for my sister's car.
Amp: AUDIOBAHN DUB2502 ==
    * 4 Ohm Stereo: 250 x 2
    * 2 Ohm Stereo: 375 x 2
    * 4 Ohm Mono: 500 x 1
Sub: Sony XS-LD105P5
    * Impedance : 4 + 4ohms
    * 350W RMS   
Now I need some help on the wiring...
Is there any other way I can wire it apart from (parallel) = 2 ohm load or Option 2 (series) = 8 ohm load?
If I wired the sub in series at an 8ohm load then connected the wires to my amp's two channels (instead of bridging) wouldn't that just be a 4ohm stereo load?
I'm basically asking what the optimal connection for this sub would be, one DVC sub. Or am I stuck wiring series and bridging to the amp as normal?
awdeclipse 
Copper - Posts: 285
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Joined: August 05, 2007
Location: Michigan, United States
Posted: April 01, 2010 at 1:45 PM / IP Logged  
Wire in series, 8ohm load. Then hook up to the amp bridged mono. That will be a 4 ohm load that the amp "will see" (half on each channel)
This is what I've always done in the past for stereo amps. For a mono only amp, i'm not sure the same holds true with regards to the amp seeing half the load on each channel.
porschedrifter 
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Joined: January 07, 2008
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Posted: April 01, 2010 at 2:12 PM / IP Logged  
What i'm confused about is, If I wired the sub in parallel, then connected it to my amp's two channels making it stereo, what would the ohm load be then?
porschedrifter 
Member - Posts: 24
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Joined: January 07, 2008
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Posted: April 01, 2010 at 2:43 PM / IP Logged  
Like this: 4ohm dvc sub to a 4ohm stable mono amp? -- posted image.
Is this possible, if so what would the ohm load be?
DYohn 
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Joined: April 22, 2003
Location: Arizona, United States
Posted: April 01, 2010 at 5:08 PM / IP Logged  
No.  Wiring the voice coils in parallel creates a 2-ohm load, period.  Wiring your amp that way may or may not fry it, depending on the amp.  Either wire one VC to each channel by itself or wire the sub for 8-ohms and bridge it.  Or use only one voice coil and bridge the amp and keep the volume down so you don't over drive the VC.
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porschedrifter 
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Posted: April 01, 2010 at 5:24 PM / IP Logged  
Thanks for the reply.
I was considering wiring each VC to each separate channel, but I was looking for an easy way around adding another wire terminal to the box.
Can you help me understand how it's different from wiring the sub parallel and then just branching off the same wire and connecting to both channels of the amp? If it stays a 2ohm load, and this amp is 2 Ohm Stereo stable then doesn't that accomplish the same thing?
Or am I way off?
porschedrifter 
Member - Posts: 24
Member spacespace
Joined: January 07, 2008
Location: New Jersey, United States
Posted: April 01, 2010 at 5:39 PM / IP Logged  
I would be getting more power to each VC if I wired each VC to each channel. I want to avoid the series to 8ohm load wiring as well as just one single VC.
i am an idiot 
Platinum - Posts: 13,670
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Posted: April 01, 2010 at 9:23 PM / IP Logged  
The amp will make the same exact power into an 8 ohm mono load as it will into a 4 ohm stereo load.  I am not saying close to the same power.  I am saying the same exact amoount of power.
z03mz03m 
Copper - Posts: 244
Copper spaceThis member has made a donation to the12volt.com. Click here for more info.spacespace
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Posted: April 02, 2010 at 12:28 AM / IP Logged  
porschedrifter wrote:
but I was looking for an easy way around adding another wire terminal to the box.
Don't use wire terminals just drill a hole the size of the wire (two if needed) and caulk around it(them)inside and out; and make sure you leave plenty of extra wire to reach the amp.
Wire terminals = air leak = VERY BAD.
porschedrifter 
Member - Posts: 24
Member spacespace
Joined: January 07, 2008
Location: New Jersey, United States
Posted: April 02, 2010 at 12:47 PM / IP Logged  
i am an idiot wrote:
The amp will make the same exact power into an 8 ohm mono load as it will into a 4 ohm stereo load.  I am not saying close to the same power.  I am saying the same exact amoount of power.
HAHAHAH, Thanks for that bit of an epiphany... I'll just do the 8ohm mono wiring then!
See, this is why you guys are needed in this world, to help people like ME
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