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Old 05-28-2011, 06:02 PM   #1
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Default Small 4-chan amp installed

I wanted more from my factory radio but didn't want to go all out and replace the entire system. I upgraded the factory speakers to Polk db571s then searched for the smallest 4-channel amp I could find. I ended up with this Alpine amp. It takes speaker level inputs and amplifies them. Plain and simple.

Click the image to open in full size.

It is designed as a plug and play add on for non-amplified Alpine systems. It plugs into an Alpine head unit and the factory harness plugs into it. After doing some research, I found out that people are installing these on non-Alpine systems too. You can find its specs all over the web.

The wiring harness is this http://www.redtagcellular.com/produc...s-03%252b.html adapter for some bluetooth thing. If you plug those two small connectors into the big connector, it's basically a pass-through cable. This allowed me to add the amp inline without cutting the factory wire harness.

Click the image to open in full size.

I cut off the Alpine connectors, and cut the speaker wires (8 wires for 4 channels), constant 12v (yellow), switched 12v (red) and ground (black). Then I soldered and heat shrink wrapped the lines.

Click the image to open in full size.

When I was done, I had the Alpine amp with a Ford connector on the ends. The bundle of wires included 4 speakers channels, constant 12v, switched 12v and ground -- all in one neat package. The only snag I ran into was the switched 12v (red wire) wasn't getting anything when you turn the ignition key. After a little spark chasing, I ended up using the orange with black stripe coming from the factory wiring harness and connected that to the blue with white stripe going into the amp.The Alpine amp had a bunch of other wires I didn't need. I just bundled them with a wire tie.

Click the image to open in full size.

The wires on the amp were maybe 2-3 feet long on each side so everything reached the back of the factory head unit with the amp tucked behind this panel. It fit snugly so I didn't even have to bolt it in or anything. I could've tucked the amp just under the factory radio, behind the radio controls. There was plenty of room but you have to push some wiring harnesses around. I didn't want to bother with that. Besides, that space at the bottom of the radio stack is prefect.

Click the image to open in full size.

This is what it looked like before and after the install. Nothing is visible. Nothing under the seats. Nothing on the back wall of the cab. Nothing under the hood.

As far as sound quality goes, it's a huge improvement over stock. It's not earth shaking like the $500-1000 upgrades but for my tired old ears, it's heavenly.
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Old 05-30-2011, 07:44 PM   #2
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Now that is a sharp little setup! Excellent job on the install.
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Old 05-31-2011, 09:56 PM   #3
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Quote:
Originally Posted by ElTauro View Post
Now that is a sharp little setup! Excellent job on the install.
+1. Its nice when someone puts thought into it and does it right, i like your improvement!
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Old 08-24-2011, 07:04 PM   #4
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Do you have in depth instructions on connecting the wiring? I suck with anything electrical and that pic looks overwhelming.
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Old 08-24-2011, 07:11 PM   #5
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I like your setup.... I saw those little units when I was doing my buying online for my install of a sub/amp. But when I saw it was only for an alpine head unit I bailed....

You've brought my interest back... I think I may do this as a compliment to the sub...

Nice Work!

Carl
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Old 08-24-2011, 07:17 PM   #6
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How would one wire this solution if I already had the PAC-OEM-FRD24 adaptor?

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Old 08-24-2011, 07:17 PM   #7
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that is a great setup. probably better quality than some of the cheaper 4 channel amps on the market.
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Old 08-24-2011, 07:17 PM   #8
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Click the image to open in full size.

I'm not sure what that is that I circled in the picture. What does it connect to?
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Old 08-25-2011, 09:11 PM   #9
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Propellerhead.... how does it sound? Is there a noticeable increase in volume and clarity? Is the bass a little more pronounced?
Also what is the brand name on the harness you used... your link doesn't work for me.

Thanks

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Old 08-26-2011, 04:54 PM   #10
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I think I found the harness but I'm not positive if this is it. Propellerhead will have to confirm.

http://www.aftermarketcellular.com/ic/QCEXP-1.html

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Old 08-26-2011, 04:54 PM
 
 
 
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