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gandalf91

2011 Car Stereo Overhaul



Of my many passions in life music ranks among the top few. As such I've grown tired of years of mediocre stereo systems in cars. So what better project to take on next than a DIY stereo overhaul?

As of now I've completed only the first step in what will be quite a bit of work. The goal? Depth, beauty, a total transformation of the auditory experience. 

It was exam week when I received word from home that my first package had arrived and I was eager to begin. Yesterday was the day I installed (for the very first time) my first aftermarket head unit. I'm in the work force again this summer, so I have some money for decent parts. My head unit sported favorable reviews, plenty of features, and a decent built in amp, 22W RMS x4 channels (at least to hold me over until I can shell out the money for a dedicated amp). With all this in mind, the amp still did not break the bank. At just about $105 I ordered the Kenwood KDC-138 stereo receiver, complete with wiring harness, factory removal tools, manuals, mastersheets, all the documentation I could ever need, and the commendable Crutchfield service. Sure I could have bought this on Amazon for $75...but it would be just that, a bare unit. And this being my first stereo install, I didn't know what accessories I would need...Needless to say, I was very pleased with my purchase.

 

After unpackaging (and stopping to admire) the new gear, it was time to remove the old unit!

But first...disconnect the battery terminal to avoid electric shock or shorting during replacement.

 

Now for the extraction...


Now that that has been taken care of, time to prep the new wiring. I opted to solder the wiring harness to the adapter rather than crimp.

 

After soldering the wires, I utilized my newly purchased heat gun to shrink the heatshrink insulation I had placed over each wire. (Forgot to take pictures of this step.)

With the new wiring in place...

And the ground wire hooked to the chassis...

...it was time to mount the unit!

And thus concludes the first phase in my extensive summer project. Big Smile (See initial thoughts and comments -->)

  • The single largest improvement over my last receiver is the clarity in the high-mids and mids. Anything with a percussive bite is now much sharper and stronger. As I listened to Slipknot this morning, I thought to myself, "damn, Joey's drums sound a bit meaner now! I love it!"
  • Despite the boost in clarity, there is a drawback, a rather double edged sword at that. The new unit in default settings produces less bass than my stock unit. (Yes, I'm aware 22W RMS will not get the job done in the bass department especially coupled with factory speakers). On top of that, the newly acquired enhancement to the upper mid frequencies in itself draws increasing attention to the lack of bass...Quickly I found the bass boost button and basic EQ. I set the bass boost to its medium setting and increased bass and mid +1 on the EQ. While it did mitigate the problem to some small extent I am now gnawing on my hand for my subs as well as the rest of the package!
Hope you enjoyed the read! More to come. Smile
Published Monday, May 09, 2011 11:23 PM by gandalf91

Comments

 

MewMint said:

*Learns Gandalf is an audiophile*

May 9, 2011 10:43 PM
 

GmsCool said:

You actually disconnected the battery? You afraid of 12v?  HAHAHAHAHAHAHAHA

(keeps laughing)

(little bit more)

You didn't really need to, as small as the wiring is under the dash, you wouldn't even feel a tingle if your fingers were wet.

You gonna get those Polk's?

May 9, 2011 11:37 PM
 

gandalf91 said:

Lol...It told me to in the directions so I obeyed...I had no idea if I needed to or not...

And yeah, I'm actually seriously looking at those Polks for the front speakers. Thanks for the suggestion by the way. They look/are reviewed/and spec'd really nice. $100 isn't too bad for good speakers either. I think for the rear 5x7's/6x8's I'm going for Rockford Fosgates. I was looking at a couple and haven't completely narrowed it down yet. I'm looking more in the $60-80 range for those.

I was wondering what advice though you had on tweeters. Should I get all soft domes or a mix of soft domes and "harder" material for a greater variety of sound. The soft domes are definitely going up near ME as I don't like "harsh" treble. If I get a harder material though, I'm sure if it's off axis from where I'm sitting I should probably be able to get a good balance of crisp sound without it biting too hard. Also, what are your thoughts on on-axis, off-axis tweeter mounting? I'll try a couple configurations before permanently mounting them, but preliminary knowledge never hurts.

Thanks for the reads guys! :) And I would classify myself as a "borderline" audiophile. ;)

May 10, 2011 5:00 AM
 

terran698 said:

i would suggest silk dome tweeters, i have these in my truck http://www.sonicelectronix.com/item_8792_Lightning-Audio-Bolt-B3.69.3.html running off of this http://www.sonicelectronix.com/item_16642_Pioneer-DEH-P4100UB.html and since they are at my feet the sound is very good but when you move your head near the floorboard the treble starts to get very bright almost harsh.

as for tweeter mounting direction i would recommend off axis, unless your running huge subs and need the extra output.

if you do get a sub them i have to stress getting a good one(no sonys) and not using a pre-fab box. do some math and make one and you will think yourself in the end. maybe this will help http://www.soundsolutionsaudio.com/store/products/10%22-SSA-DCON-10D4%7B47%7DS4.html its a great sub for the price and in the right box, say 2ft3 tuned to 33hz(ported of course), and the output should surprise most people.

May 11, 2011 7:14 PM
 

terran698 said:

forgot to say why i listed my stuff. its because the materials in the two tweeters of the speakers i have are a hard material and if they were directional/closer to me ears i wouldn't be able to stand it without tweaking the output.

and i forgot to mention also that if you are defiantly going to get a sub then look into the infinity kappa's http://www.sonicelectronix.com/search_new.php?action=search&keyword=infinity+kappa&query_id=7402798&query_code=614837&product_type=9 they have awesome sound but the bass is a little weak. also since they are 2ohm they will pull a little more power from your head-unit for more output

May 11, 2011 7:24 PM
 

gandalf91 said:

Thanks for the input Terran! :) I already have it in my itinerary for this project to build my own boxes. I have found the right ratios and such and will either use oak or birch for the construction. Probably 5/8" sheets or something if I can find that width. Then I'll cover it in thin carpet. Only getting 8" subs..but getting some of the deepest I can get my hands on. I have looked through data sheets especially on frequency response curves to help make an informed decision, then referencing reviews for quality.

Alright, the rear speakers should serve well for off axis then. I'll go 2 or 3 way rather than component there. Save some $ and some work. For the front, I might try a scheme that produce stellar results in a BMW I heard it in..and that is to mount that tweets about one foot below ear level, and one foot in front of the face, angled very slightly but almost cross. Sounded like a charm.

They are a bit pricier than some units by Kenwood, but I'm almost definitely getting Rockford Fosgate amps. One for the subs and another for the rest of the speakers. Going to use a widely acclaimed Clarion crossover with everything I'm looking for for only $85. 3-way crossover by the way...

May 11, 2011 9:16 PM
 

terran698 said:

well if your dead set on going with 8's then i have to recommend these http://www.soundsolutionsaudio.com/store/products/Sundown-Audio-SA%252d8-Sub-woofer.html. they are by far one of the best 8 inch subs out there short of anything custom built and they are relatively cheap on top of that. interested on knowing how it turns out for you

May 18, 2011 9:49 PM
 

fatboyHD said:

hey gandalf,, how 'bout a piece of gum,,,  lol

June 27, 2011 8:13 PM
 

Blog Picks said:

2011 Car Stereo Overhaul EggXpert gandalf91 totally overhauled his car stereo. Pics included! Created

August 11, 2011 10:33 AM
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