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Old 06-05-2009, 01:56 PM   #1 (permalink)
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installing subs and amps

i have navi in my car and was wondering if i did put a sub and amp in the back truck area do i run the wires to my head unit or can i connect the wire to the bottom of the speaker in the back? im a noob at audio stuff for cars
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Old 06-05-2009, 02:25 PM   #2 (permalink)
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any body?
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Old 06-05-2009, 02:58 PM   #3 (permalink)
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You should be able to come off the rear speakers, BUT you will need a LOC. Don't just hook up the rear speaker wires to the amp. That would be ... bad.
Google "wiring up a car amplifier". Lots of info out there that you NEED to know if you are going to do it yourself. If you do it wrong, you will be spending alot more $$ than if you just paid someone to do for you.
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Old 06-08-2009, 11:35 PM   #4 (permalink)
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you should run a rca cable from the amp to the back of the head unit. also a remote wire
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Old 06-10-2009, 01:04 AM   #5 (permalink)
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It does help to google first but in simple (inexpensive) form: get a LOC or line output converter, several feet of high quality RCA cable (monster, streetwires etc). I am assuming since u have navi u have the premium system. So for u it should be pretty straight forward. Find a place in ur trunk to mount the loc preferably on a metal surface or close to one so u can ground the loc nearby to a clean unpainted metal surface. Tap the positive wire of the loc into the positive sub wire which is green and the negative wire of the loc to the negative sub wire which is red. Unplug ur sub btw and u will see the wires and DONT plug it back in afterwards! Run ur RCAs from the loc to ur amp. Run speaker wire from ur amp to ur sub or subs and ur done. Run ur ground, power and remote wires to ur amp and ur done! U will be able to control the volume of the sub with the factory stereo too! Google to find out where to connect remote wire if u don't know.
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Old 06-14-2009, 08:08 PM   #6 (permalink)
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I don't have a premium sound system in my 2006 civic lx, could I connect the loc to the rear speakers?
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Old 07-08-2009, 04:53 PM   #7 (permalink)
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Originally Posted by AtomSmasher5 View Post
I don't have a premium sound system in my 2006 civic lx, could I connect the loc to the rear speakers?
Yes u can but it will only sound as good as the factory signal which is crap without some sort of DSP or signal processor.
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Old 07-08-2009, 07:02 PM   #8 (permalink)
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i have navi and i was lazy to take out the head unit so i got a converter box and ran through my stock sub wiring to my amp to sub it work great and i can use my head unit to adjust levels and stuff but the only sucky thin is that i had to put in a kill switch for my amp so it doesnt drain my battery everytime i turn off my car.... let me know if to need more help
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Old 08-28-2009, 10:03 PM   #9 (permalink)
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Ryan so you dont have to do that tap your REMOTE into your Antenna or ACC. So it doesnt drain your battery and you dont ahve to worry about a switch.
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Old 09-01-2009, 03:01 AM   #10 (permalink)
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ryangold is right. All you need to do is get a conversion from high level to rca output and connect your amp with rca's. Then what you should do is set your crossover on the amp to the highest setting since the signal is already crossed over by the stock headunit. You don't want any missing frequencies.
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Old 09-03-2009, 07:11 PM   #11 (permalink)
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what is a converter box and where do i get one?
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Old 09-22-2009, 02:47 PM   #12 (permalink)
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Thank You!
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Old 09-22-2009, 11:07 PM   #13 (permalink)
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with a stocked system you cant run wires to the head unit you need a divider box which gets connected to your factory speakers and spits out the RCA cables for you to connect your amp
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Old 09-23-2009, 06:24 PM   #14 (permalink)
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which is also known as a Line Out Converter or a Hi/Lo Converter.
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Old 09-24-2009, 10:07 AM   #15 (permalink)
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Originally Posted by padrepiimp View Post
you should run a rca cable from the amp to the back of the head unit. also a remote wire
Experience, and common sense, tells me you should run your wiring off the receiver or source. This meaning your RCA's and your Remote. Also, be sure to run you run them on the opposite side of the battery/power cable running from your battery positive (+) to your amplifier.
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Old 11-30-2009, 02:17 AM   #16 (permalink)
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I'm not too knowledgable on audio and all this deal but I had my brother-in-law install my system today. I'm still using the factory headunit and speakers but running an aftermarket amp and sub. I had all that on a previous car so all I had to get was an LOC. We went to wal-mart and got a scorche LOC and a wire for remote. I remember that he disconnected the plug that goes into the factory sub, and wired the LOC to the wires of the factory sub plug. He ran the wires to the front of the car. He didn't have to take out the radio to do any wiring at all. It seemed pretty simple. It sounds awesome though. I have a Memphis Belle1300 pushing a 12" Memphis sub. I'll post pics eventually.
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Old 11-30-2009, 02:21 AM   #17 (permalink)
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Quote:
Originally Posted by FIVEsixONE View Post
Experience, and common sense, tells me you should run your wiring off the receiver or source. This meaning your RCA's and your Remote. Also, be sure to run you run them on the opposite side of the battery/power cable running from your battery positive (+) to your amplifier.
I have done plenty of audio installs, and you need not feed a turn on lead from the source, it just needs 12v when the car is on. That keeps it from turning the amp on and off with the stereo anytime you just hit the power button....now either way is acceptable, but it's all personal pref.

Also, you cannot run RCA's from any stock system unless a LOC is involved, OR you have high level inputs directly on the amp as some do.

I ran a LOC on my STI and it was perfect, I plan on using it on the Si when I do my install as well...there are a couple of threads showing exactly how to.
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Old 11-30-2009, 02:22 AM   #18 (permalink)
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Quote:
Originally Posted by CvcSi2008 View Post
I'm not too knowledgable on audio and all this deal but I had my brother-in-law install my system today. I'm still using the factory headunit and speakers but running an aftermarket amp and sub. I had all that on a previous car so all I had to get was an LOC. We went to wal-mart and got a scorche LOC and a wire for remote. I remember that he disconnected the plug that goes into the factory sub, and wired the LOC to the wires of the factory sub plug. He ran the wires to the front of the car. He didn't have to take out the radio to do any wiring at all. It seemed pretty simple. It sounds awesome though. I have a Memphis Belle1300 pushing a 12" Memphis sub. I'll post pics eventually.

That is what alot of folks do for the LOC, right off the sub. I am just waiting on a warm day to do mine.
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Old 11-30-2009, 02:25 AM   #19 (permalink)
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Originally Posted by Silum2k6 View Post
That is what alot of folks do for the LOC, right off the sub. I am just waiting on a warm day to do mine.
My wife was in the car with me so I was not able to really turn up the bass too much (she doesn't like loud music lol). I had it at low base through the radio and still sounded so much better than that factory sub.
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Old 12-01-2009, 01:23 PM   #20 (permalink)
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I had my amp and sub installed at best buy and I also have the navigation. It cost me 125 bucks for the installation and the LOC. The tech hid the LOC under the stock sub and speakers and ran the rest of the wires under the floor mat. He then hooked up the remote wire to the dash lights as they are always on...sounds great...sound levels are pretty good....have them give you a quick amp tune while you are in there and you should be pretty happy
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