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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 09-17-2011, 10:28 AM
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ironchef2011 ironchef2011 is offline
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Default Alpine to JL Audio- Dash, Center and Headliner Speakers

This is the first stage in the conversion of the stock Alpine speakers in my 2011 Ram CC Sport to JL Audio.

The goal for me is to increase clarity, improve the soundstage and reduce the overly mid bass oriented stock sound system.

The speakers I chose to replace the stock Alpine 3.5" dash and center channel speakers are JL Audio C2-350x speakers. For more details, go here:

http://www.crutchfield.com/s_136C235...and%7cJL+Audio

I used the Crutchfield/Metra harness #12071039 so there would be no need to hack into the stock wiring. Just plug and play and move on with your life! The harness can be found here:

http://www.crutchfield.com/p_1207103...s.html?tp=3097

The dash and center channel speakers are easy to remove. First, gently pry up on the front of each grill to remove the cover. Next, use a 7mm socket and small ratchet to remove the two bolts holding each speaker in place. On the center channel grill, you will need to unplug the sensor built into the grill if so equipped. Installation is as simple as clicking in the new harness and performing the reverse of the aforementioned.

However, in an effort to provide higher frequencies to the front door effort to improve the soundstage, I wired in a signal line from the dash speakers and ran that wire to the door area. I'll use this later in stage two to be the signal line for a crossover for the tweeter separates. More on that later....

Next up was the headliner speakers. Gently pry on a corner of the grill and then carefully remove. It's held in place by four clips and is a little stubborn to remove so be patient. With the grill out of the way, you'll find a little 2.5" speaker and a special mounting bucket. Remove the speaker bolts with a Torx 20 driver. Once removed, I chose to use JL Audio VR-075CT for its silk dome tweeter and position adjustable mounting bucket. This is no longer for sale but information on them can be found here:

http://mobile.jlaudio.com/products_c...hp?comp_id=248

Since the 0.75" tweeter was far too small to mount into the headliner bucket, I fashioned a tweeter pod from a 2005-2010 Honda Odyssey to fill the gap and angle the tweeter accordingly. See photo for details. Please note that this tweeter uses a passive, in line crossover which is between the harness and the speaker to filter the undesired frequencies. Also, you can use the same harness as above simplify hookup.

Results- All I can say is wow. I had to readjust the EQ settings and am now completely flat on the midbass and treble settings with improved sound quality. It's not breathtakingly good yet, but an improvement nonetheless. I've heard mixed reviews on the replacement of the Alpine speakers but so far, I couldn't be happier and look forward to the four door replacements next week.
Attached Images
File Type: jpg StockvsJL_Dash.jpg (73.6 KB, 549 views)
File Type: jpg Stock_Dash&Headliner_Speakers.jpg (113.5 KB, 569 views)
File Type: jpg JL_DashSpeaker_Wiring.jpg (120.8 KB, 534 views)
File Type: jpg JL_CenterChannel.jpg (96.2 KB, 856 views)
File Type: jpg JL_DashSpeaker.jpg (109.5 KB, 762 views)
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Old 09-17-2011, 10:29 AM
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Here's a pic of the JL Audio tweeter installation:
Attached Images
File Type: jpg Headliner_Speaker.jpg (85.2 KB, 870 views)
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Old 09-17-2011, 10:35 AM
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I think you're the first person I've ever seen do anything with the headliner speakers.

Nice thread, keep it up.
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Old 09-17-2011, 10:44 AM
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Thanks!

Although minimal, their impact is noticeable in that the rear fills seems crisper.
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Old 09-17-2011, 02:11 PM
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Update: As I indicated in another thread, I tested both with and without the center channel speaker. But first, a little background as to why. In my opinion, a center channel speaker is beneficial in two scenarios: Cinema/DVD audio or regular music, but in both instances the center has to have DSP to provide just a touch of spatial imaging.

The Alpine center channel though is not DSP modified, but rather a crossed over and combined signal from the left and right channels. This might be better if it was also a speaker rated at a much higher ohm resistance to reduce its volume, but instead it's the same as the dash speakers. The result is an overly loud presence that diminishes the width of the sound stage. My JL Audio C2-350x center channel speaker actually made this situation a little worse.

By removing the center channel altogether, the width of the sound now goes from door to door. Further the newly added tweeters, combined with the reflective property of the windshield, make it so there are no gaps in the sound. In other words, it's like the entire dash is like one big stage where as before, my ears would go to the dead center and stay there.
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Old 09-17-2011, 10:34 PM
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In other words, the center channel screws things up, eh?
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Old 09-24-2011, 02:44 AM
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are you running these all off the stock amp?
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Old 09-24-2011, 07:31 AM
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For now, yes. Until I find a suitable plug/play harness that allows me to simply bypass the amplifier all together while keeping the stock head unit, I won't be adding external amplification to the full range speakers. I'm not a fan of cutting, splicing or doing any permanent changes on any vehicle.

PAC Audio almost has it. They have a harness that connects to the back of the head unit to add signal to a new amp but no return harness to connect it to all the speakers. Close!
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Old 09-24-2011, 08:49 AM
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Very cool.

Rep for sharing and I'm subscribing to learn from your efforts!
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Old 09-24-2011, 09:05 AM
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watching! Excellent project!
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