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Custom Dodge Ram Interior Modifications - Custom Audio / Video All custom mods on the interior of your Dodge Ram. Dodge Ram stereo mods, alarms, electronics, shift knobs, upholstery, etc.


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  #1  
Old 05-13-2015, 02:32 PM
freyjas freyjas is offline
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Default Matching speaker impedance to Alpine amp

I have a 2011 crew cab with the Alpine system. I don't hate it, but we all know it can be improved with some easy changes.

How much power is lost when trading out the 3.5" speakers on the dash for some 4 ohm replacements? What about for the doors?

After all I've read here...I think I'm going to trade out the dash and the rear door speakers for now. And replace the alpine sub with a new enclosure and amp.

So is it better to stick with lower impedance speakers like the Infinity Reference series or not worry about the losses and go to something else with a 4 ohm rating?
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Old 05-14-2015, 07:52 AM
Aggie86 Aggie86 is offline
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Not sure how they match up but I have a 2014 with the Alpine system. I put in 4 ohm Kicker speakers all the way around and a Kicker Hideaway subwoofer. Sounds great now.
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Old 05-14-2015, 08:56 AM
TNRam10 TNRam10 is offline
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Drop in the 4 ohms and dont worry about it. You would have issues if you ran something lower.
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Old 05-14-2015, 09:01 AM
Ramdandy Ramdandy is offline
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If you put in 4 ohm, your amp will be putting out half the power 225 watts. That's about a 3 db decrease in sound. You will notice it a a slight decrease in sound. It will be lower sounding at the same volume setting than with 2 ohm. Most would think you would lose half the volume, but to decrease the vol in half, you would have to decrease your amp by 10 times (50 watt amp) or increase your speaker to 20 ohms.
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Old 05-14-2015, 09:38 AM
freyjas freyjas is offline
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Quote:
Originally Posted by Ramdandy View Post
If you put in 4 ohm, your amp will be putting out half the power 225 watts. That's about a 3 db decrease in sound. You will notice it a a slight decrease in sound. It will be lower sounding at the same volume setting than with 2 ohm. Most would think you would lose half the volume, but to decrease the vol in half, you would have to decrease your amp by 10 times (50 watt amp) or increase your speaker to 20 ohms.
This is great info. Thanks! You Canadians are alright.

I feel like the dash needs to be dialed down a touch anyway. The Alpine 3.5" sound overwhelming above about 26 on the volume...to me anyway. The low end in this set up is so poor that the highs just take over. A small dB drop up front might be just right to find some balance. Feels like tin in my ears as it is right now when it's way up.
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Old 05-14-2015, 10:16 AM
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So the stock setup is 2 ohm speakers?
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Old 05-14-2015, 10:49 AM
freyjas freyjas is offline
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Quote:
Originally Posted by ShiftJockey View Post
So the stock setup is 2 ohm speakers?
I believe it's 2 ohm for your model year, but don't quote me on that. I believe the fronts on my 2011 are 2.5 ohms from the factory.
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Old 05-14-2015, 01:13 PM
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So now ya gotta wonder about the amp.

OK...thanks for the info!
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