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2005 mustang factory subs


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05gt 
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Location: British Columbia, Canada
Posted: March 16, 2006 at 6:59 PM / IP Logged  

I put in a aftermarket amp to connect these subs to, and at the amp I have 1 ohm is there a way I can wire to have 2 ohms at the amp

the subs are 1.2 ohm per voice coil, they are dual voice coil subs

the way I have them wired is on one sub I went (+) to (+) to amp and then (-) to (-) to amp

how can I make it 2ohm load at the amp

arrow12 
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Location: United States
Posted: March 16, 2006 at 9:44 PM / IP Logged  
I am pretty sure you can't get a 2 ohm load with thse subs.  About a 1 or 4 ohm load is about it I think.
That's my opinion. Take it, leave it, or correct me.
05gt 
Silver - Posts: 628
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Posted: March 16, 2006 at 9:57 PM / IP Logged  
I got about a 2.4 ohm load out of it
arrow12 
Silver - Posts: 527
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Posted: March 16, 2006 at 10:00 PM / IP Logged  
How many subs do you have?  I think I am a little confused on that.
That's my opinion. Take it, leave it, or correct me.
05gt 
Silver - Posts: 628
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Joined: October 30, 2005
Location: British Columbia, Canada
Posted: March 17, 2006 at 12:12 AM / IP Logged  

There are two factory subs in this car, one in each door, and they are both 1.2ohm dual voice coil

stevdart 
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Joined: January 24, 2004
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Posted: March 17, 2006 at 6:19 PM / IP Logged  

05gt wrote:
the way I have them wired is on one sub I went (+) to (+) to amp and then (-) to (-) to amp...I got about a 2.4 ohm load out of it

The wiring you described is parallel, so you wired the coils together in parallel.  If you measured the result with the speaker unhooked from the amp, and your meter was adjusted for its own internal resistance, then you measured the DCR of the combined coils correctly.  Meaning, if that is the case, then each of the coils is a 6 ohm impedance coil.

The impedance is higher than the DCR reading you get with a meter.  And the reading would be in error if the sub was connected to a power source.  And...with a parallel connection you know that each coil is of a higher value than your combined reading, not a lower value.

6 ohm paralleled with 6 ohms = 3 ohms, and we are talking about impedance, not DCR.  If you measure a 3 ohm load with a meter you should read about 2.4 ohms (impedance / 1.25 = DCR).

Here are your wiring options.  You can buy a more powerful amp and run these at 6 ohms, or take a gamble on overheating the amp with a 1.5 ohm load.  And be sure you know what the power rating for those subs is.  How much factory power did these subs get?

Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

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