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2015 Chevy Sonic/Wall/4 PSI 15's/SA 6K/Active/Arc/CDT/Singer/US Alt/XS


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So it all began this past March when I decided to get a low-cost daily driver. I found a deal on a 5 speed manual non-turbo Chevy Sonic. Built in America, 15000 miles, 1 previous owner (repo'd), and sales price about $12000. Blue Book is 15k, so this was definitely a deal.

Test pic

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Chevy Sonic Wall (4) 15's on 10k Build Log

https://www.stevemeadedesigns.com/board/topic/209412-2015-chevy-sonicwall4-15s10klithiumlarge-case-hairpin-us-alts/

(4) Fi SP4 15's | (2) Ampere 5Ks | Active! | Arc KS600.2 & KS125.2mini | CDT Silk Domes | Silver Flute 8s | 240Ah JY | US Alts

Jeep Wrangler JK (4) 8's in a 4th Order Build Log

https://www.stevemeadedesigns.com/board/topic/209841-shadow-2016-jeep-wrangler-jk4th-order4-8sdc-35klarge-case-hairpin-us-alts/

IG @walledsonic

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First order of business: stereo. I figured I'd throw 2 12's in a sealed box in the back and have an all-around decent sounding system and be done with it. I've installed 7 sub-box type installs since 1998, but it was always the quick install... Pioneer deck, coaxials in stock locations, RCA out to sub amp and subs in the trunk. I installed a passive component set twice.

I started looking around and found some decently priced components from CDT and decided to go passive after reading http://www.passivecrossovers.com/index.htm. I highly recommend the read for anyone that wants to fully understand what is going on within crossovers in general. Its a technical read, but easy to understand :) .

PRS Installed:

IMG_5055.jpg

But then I realized I had an active setup in the 80PRS I just installed. facepalm.jpg

I also added a sweet lil gauge pod on the dash and installed a Glowshift Voltage gauge. Its spot on with the 80PRS voltage reading. I plan to install the dual temp gauge on the other side; it has two seperate sensor runs, each read from 0F to 300F. One will go to the battery terminal under the hood, and the other one I havent decided yet. The engine doesnt have a direct temperature gauge (although there are apps and such), so I may install the second sensor as a coolant temp sensor.

Chevy Sonic Wall (4) 15's on 10k Build Log

https://www.stevemeadedesigns.com/board/topic/209412-2015-chevy-sonicwall4-15s10klithiumlarge-case-hairpin-us-alts/

(4) Fi SP4 15's | (2) Ampere 5Ks | Active! | Arc KS600.2 & KS125.2mini | CDT Silk Domes | Silver Flute 8s | 240Ah JY | US Alts

Jeep Wrangler JK (4) 8's in a 4th Order Build Log

https://www.stevemeadedesigns.com/board/topic/209841-shadow-2016-jeep-wrangler-jk4th-order4-8sdc-35klarge-case-hairpin-us-alts/

IG @walledsonic

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Never heard of a Chevy Sonic. Almost looks like my girlfriend's Cruze. Like that color.

The Cruze shares a lot of components with the Sonic, but I got the cheap shi*t, haha. GM used to call this platform the Aveo, but changed to Sonic in the US in 2012.

Chevy Sonic Wall (4) 15's on 10k Build Log

https://www.stevemeadedesigns.com/board/topic/209412-2015-chevy-sonicwall4-15s10klithiumlarge-case-hairpin-us-alts/

(4) Fi SP4 15's | (2) Ampere 5Ks | Active! | Arc KS600.2 & KS125.2mini | CDT Silk Domes | Silver Flute 8s | 240Ah JY | US Alts

Jeep Wrangler JK (4) 8's in a 4th Order Build Log

https://www.stevemeadedesigns.com/board/topic/209841-shadow-2016-jeep-wrangler-jk4th-order4-8sdc-35klarge-case-hairpin-us-alts/

IG @walledsonic

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I didnt take enough pics of the passive setup, but the crossovers were both hidden in the center kick. I had to drill holes into each of the A-pillar door jambs to run 2 sets (each side) of 12ga Knu speaker wires. One for the tweet and one for the mid. I'll post a pic of the wiring soon. The rear doors only required me to puncture a hole in the plastic grommet in the door jamb.

Arc KS300.4 for the whole passive setup. Pics forthcoming.

Once I realized I was going active, I needed a second amp. A coworker gave me a RF Punch 400s about 8 years ago, and he had it for a number of years. 100Wx2 at 4ohm, that'll work, until I get the tweet amp I want.

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So then I was like "f*ck it, I'm building a wall".

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Cut out metal clasps and such:

IMG_4745.jpg

Chevy Sonic Wall (4) 15's on 10k Build Log

https://www.stevemeadedesigns.com/board/topic/209412-2015-chevy-sonicwall4-15s10klithiumlarge-case-hairpin-us-alts/

(4) Fi SP4 15's | (2) Ampere 5Ks | Active! | Arc KS600.2 & KS125.2mini | CDT Silk Domes | Silver Flute 8s | 240Ah JY | US Alts

Jeep Wrangler JK (4) 8's in a 4th Order Build Log

https://www.stevemeadedesigns.com/board/topic/209841-shadow-2016-jeep-wrangler-jk4th-order4-8sdc-35klarge-case-hairpin-us-alts/

IG @walledsonic

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Rear anti-roll bar:

IMG_4354.jpg

Also installed the GM Performance Suspension... Shock valving from the Sonic RS and a 20mm drop (opposed to the 10mm in the RS).

I removed the battery from under the hood at some point. Installed an insulated standoff on an aluminum bar. I ground some copper bus bar down to fit the factory power fuse block and then was able to run the rear cable from this node.

IMG_4550.jpg

Had some dynamat left over from a friend and also from a previous trunk build (98 Acura CL, circa 2006, no pics):

IMG_4560.jpg

Chevy Sonic Wall (4) 15's on 10k Build Log

https://www.stevemeadedesigns.com/board/topic/209412-2015-chevy-sonicwall4-15s10klithiumlarge-case-hairpin-us-alts/

(4) Fi SP4 15's | (2) Ampere 5Ks | Active! | Arc KS600.2 & KS125.2mini | CDT Silk Domes | Silver Flute 8s | 240Ah JY | US Alts

Jeep Wrangler JK (4) 8's in a 4th Order Build Log

https://www.stevemeadedesigns.com/board/topic/209841-shadow-2016-jeep-wrangler-jk4th-order4-8sdc-35klarge-case-hairpin-us-alts/

IG @walledsonic

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I wanted to save on weight, so I though using aluminum angle would be a great idea. I put some neoprene foam (from HFT) in before placing the batteries in the tray.

IMG_4569.jpg

It worked well, but was chafing the plastic sides of the new XS batteries. I started looking at other options.

Chevy Sonic Wall (4) 15's on 10k Build Log

https://www.stevemeadedesigns.com/board/topic/209412-2015-chevy-sonicwall4-15s10klithiumlarge-case-hairpin-us-alts/

(4) Fi SP4 15's | (2) Ampere 5Ks | Active! | Arc KS600.2 & KS125.2mini | CDT Silk Domes | Silver Flute 8s | 240Ah JY | US Alts

Jeep Wrangler JK (4) 8's in a 4th Order Build Log

https://www.stevemeadedesigns.com/board/topic/209841-shadow-2016-jeep-wrangler-jk4th-order4-8sdc-35klarge-case-hairpin-us-alts/

IG @walledsonic

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New mat, covered the roof. There will be more roof work later.

IMG_4583.jpg

Oh snap, got some wood.

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Thats the last time I'd ever fit an 8' board in this car again.

Dat BUS doe

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Getting the floor and back wall designed and installed

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Mmm tasty birch

IMG_4937.jpg

Chevy Sonic Wall (4) 15's on 10k Build Log

https://www.stevemeadedesigns.com/board/topic/209412-2015-chevy-sonicwall4-15s10klithiumlarge-case-hairpin-us-alts/

(4) Fi SP4 15's | (2) Ampere 5Ks | Active! | Arc KS600.2 & KS125.2mini | CDT Silk Domes | Silver Flute 8s | 240Ah JY | US Alts

Jeep Wrangler JK (4) 8's in a 4th Order Build Log

https://www.stevemeadedesigns.com/board/topic/209841-shadow-2016-jeep-wrangler-jk4th-order4-8sdc-35klarge-case-hairpin-us-alts/

IG @walledsonic

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Getting the birch in with plenty of PL 3X on the entire underside and in between the 2x4s

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The rear deck has a vertical rear face, so we fashioned up a box that was disassembled and installed inside the car.

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I kinda regret not building the box-roof into the ceiling of the car, but live and learn. :)

Kreggin

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The shell is in!

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As can be seen, the box just barely clears the airbag and there is a 3"ish gap between the box roof and the ceiling.

IMG_4972.jpg

Chevy Sonic Wall (4) 15's on 10k Build Log

https://www.stevemeadedesigns.com/board/topic/209412-2015-chevy-sonicwall4-15s10klithiumlarge-case-hairpin-us-alts/

(4) Fi SP4 15's | (2) Ampere 5Ks | Active! | Arc KS600.2 & KS125.2mini | CDT Silk Domes | Silver Flute 8s | 240Ah JY | US Alts

Jeep Wrangler JK (4) 8's in a 4th Order Build Log

https://www.stevemeadedesigns.com/board/topic/209841-shadow-2016-jeep-wrangler-jk4th-order4-8sdc-35klarge-case-hairpin-us-alts/

IG @walledsonic

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