Run the red power wire from your amp installation kit from the positive terminal on your battery through your car's cabin to the location of the amp. The best location for the amp is usually the trunk. Every amp has pre-drilled mounting screw holes located on each of the four corners of the amp for easier mounting. You can usually find one on the sidewall behind the carpeting.
Make sure to scrape off any visible paint so that the ground wire is in full contact with the metal of your car's chassis, otherwise the amp will not function properly. Locate your car's rear speakers -- specifically the factory speaker wires running to these speakers. Carefully splice into the positive and negative wire on both the right and left rear speakers using a wire stripper. Now attach a line of speaker wire to each splice and secure with electrical tape.
Run this wire back to your amp and hook it into the speaker-level inputs. Make sure to put the right rear positive wire into the right rear positive speaker-level input, and do the same for right rear negative wire until all four of the wires are connected. Now that your amp is tapped into your car's factory audio system, run speaker wires from the amp's speaker outputs to the speaker s or sub-woofer s you want the amp to power.
How to hook up an amp and sub to a stock stereo.
Make sure to connect positive to positive and negative to negative. Connect the red power wire and ground wire you prepped earlier to the proper inputs on your amp. Secure all of the amp's connections tightly using a screwdriver. Reconnect your car battery, and test your new audio system. If the amp doesn't seem to be working properly, disconnect your battery again and go back and double-check all of your wiring for possible damaged wire, grounded wire or loose connections.
Most Honda Accords are equipped with a noise cancellation microphone in the cabin — it needs to be disconnected, that will fix your problem! When the install is complete and I hook back up the battery neg terminal to the car, the system works and sounds good. But when I shut my car off and then turn it back on my amp comes up with the red light protection error every time after. I have no idea why. The factory system is the beats audio. Do I need to keep the factory sub installed and wired up too?
If it does, that would indicate possibly a poor ground for the amplifier. Hi Annie, I have an 06 maxima with the factory premium bose sound system. All i will need is a LOC with bass control, to tap into the rear stock sub and wire the amp kit like normal right? Also, the watt amp has watts rms x 1 channel 4 ohms bridged , and my sub is 4 ohms, watts rms watts max. Is this amp good enough to get nice bass from the sub? Or do i need to upgrade to a bigger one before i hook it up?
I want bass without having to buy a new alternator lol…. Hi Ashton, yeah you got it right. Can you do that or am I way off the mark? Hey Ben, it really kind of depends on your equipment. If not, yeah I would grab a 4 channel line output converter and use two separate RCA cables — one run the front channel and another to the sub channel. Additionally I would get a bass knob so you can have an independent sub level volume control as opposed to adjusting the bass on the head unit which will adjust bass levels to all speakers. I just installed a aftermarket radio in my 06 Chevy Equinox, everything turns on and looks like it is working but no sound is coming out.
Any ideas as to what could be wrong? You probably have a stock amplifier that needs to be powered up. Like if you have the Bose system? You would need to use the remote turn on lead from your aftermarket radio usually blue with a white stripe and wire that to the amp turn on lead in the car harness. Hello annie,awesome blog here! I am very familiar with audio systems and have performed all installs on my personal vehicles. I recently was stumped with my lastest install in a ram pick up truck. My question is if my oem amp is filtering out my signal to my 4 channel amp is it then best to tap the wires previous to the oem amp to achieve a better sound?.
Whats happening is my door speakers are either entirely flat with no tweat,or they are all tweat. FYI its a ram with a line out converter and aftermarkyamp already in place. You may need to do an audio processor that sums the frequencies off the stock amp prior to your aftermarket amplifier so you can get a true full range signal. Here are my questions. I have a F with Sony premium sound system. I can see the stock amp and stock sub.
I have read that the amp also powers the door speakers. If so, what LOC would you recommend? I have a bass knob already that connects to the kicker amp that I want to install.
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I want to keep the look of my truck stock so I may swap out the stock door speakers, tweeters, and center speaker. If I do so do you think the stock amp will do the aftermarket speakers justice? I was thinking of replacing them with Polk Audio components in the front and coaxial for the back. Hi Rob, Thanks for the comment, I appreciate it! Ah Ford and their lovely Sony system. And they have so many variations! I can understand wanting to keep the look stock. I recently did this in a Subaru with Morel Tempo speakers just did speakers and dynamat off basic stock stereo and was pleasantly surprised at the justice the stock stereo did for those speakers.
And if you ever did want to change the stereo, keep a look out for Alpine and iDatalink. So in the future there may be some nice options.
Does tieing an LOC in parallel to the speaker circuit effect the circuit impedance? I think maybe you just mean running along side with rear speakers operating. So you can and are supposed to have your LOC installed along side your rear speakers. I hope that makes sense! Next how do i connect the wires in any case?? Do i have to keep the harness plugged into the head unit or do i have to keep it unplugged as i read somewhere you cannot power the speakers from both factory hu and amp simultaneously..
And while feeding the amp output back to speakers n subs we connect speaker wires to each speaker leads, so whats the difference between amp input signal n amp output signal, its confusing me as for eg. You can take the speaker leads off the back of the stock stereo and route them directly to your amp. The LOC is your input signal. That is feeding the actual audio signal to the amp. The amplifier amplifies that audio signal and feeds it the speaker output.
How to Add an Amplifier to a Factory Stereo
What if I were to tap into the factory speaker wires without the converter by cutting and splicing a rca cord? I think he only does this in cars that have a stock amp and have a direct low noise pre-amp level audio signal. I have an 07 maxima with a Bose amplifier. Should I tap into wires that input into the bose amp or the output wires and which colors. Hey Chris, sorry for the late reply, was busy trying to survive the holiday season at our shop.
OnDemand lists black as negative and white as positive on the stock subs. Other wise, probably behind the radio. Sounds great only one problem when car goes on or off i get an annoying distortion sound on subwoofer. Try switching the source for your remote turn on lead to a different accessory power source. What would work best? When in doubt, I would go straight to the stock sub.
Where is the best place to hook up a line output converter when adding an amp for a sub? I may have missed it somewhere. Hey Keith, you can grab that signal right at the stock Bose subwoofer. Like a positive one side of sub and negative on other side of factory sub? The stock amp really is not powerful enough nor designed to run the impedance of your MTX.
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- How to Wire an Amp to a Sub and Head Unit: 12 Steps!
So definitely get the LOC and a separate amp to power your MTX — you could also get an amp that has the LOC built into it too, but either way definitely just grab your signal from the stock sub, but use that signal to feed a dedicated amp to power your MTX. I have a ram with premium alpine system. I want to add amps and a sub. The car is canbus equipped. How do I get a clean signal for amps. Anything I add must be tied in post factory amp. I need to clean the heavily processed signals. I will tune via aftermarket amps.
Not interested in complicated dsp…. Hi Fred, I feel your pain. You might want to would wait to see what JL comes up with, but it may be another 9 months or so before they release anything. They talked about this very problem at CES recently and they are in the process of designing a new product which tackles this exact issue. You can read more about the new JL Audio processor here , scroll towards the bottom of the post. With this processor you also have the option of using a digital aux in so for a dedicated super high fidelity source, you can use an iPod running through a high quality digital to analog convertor straight into the processor.
With Audison I had many defective units and it would take months, even over a year in one occasion, to have them repaired or exchanged one of the reasons we stopped carrying them. Sometimes you really only need to use two audio signals. So whichever route you decide to go, make sure you go to an experienced installer who knows what a frequency sweep is, a scope is, and what an RTA is and make sure he knows how to use them because you really need all three to set up a processor correctly in a vehicle like this.
Then when the Fix and the Twk comes out from JL you can clean it up even more. Those will be designed to do the tuning and tweaking themselves, making it a much simpler install. Hey I have a ram pickup with factory alpin system and touch screen deck. Has factory sub under back seat.. Had 4 wires going to that one sub.. Hi annie i have a question if i am connecting a line out converter on a factory rafio but there are no speakers installed the wires are there and i know which ones are going to each speaker how would i find out polarity on the wires.
Hi there, I just bought a cadillac CTS and I wanted to know if its possible to hook up a sub and amp to the stock stereo,if I can how do I do it? Of course you can! I would add one clarification to your speaker polarity testing. Thanks for taking the time to post it! For readers that need more details on polarity testing you can check out this video post or this post on wiring up a head unit when the wires have been cut. Hi i just bought a Lincoln mkz. I hooked up a line output converter and when i shut my car off the amp begins to work and apply bass.
Im not sure why this is happening i read the directions,followed step by step.
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Everything works fine when i turn my radio on and off the amp goes off and on…. I got 2 10 inch kicker competition,and a watt power bass amp,stock radio….? Did you run the remote to an accessory or ignition wire in the vehicle so the amp goes on and off with the key? Sounds like maybe you used the signal sensing feature of your line output convertor, they can do funky things like that.
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Try to find a true accessory or ignition wire to get the timing right. Hello, I just recently purchased a 04 Audi 2. I have a Infinity reference a mono-amp and 2x Infinity Reference w Inch that I used in my previous car and I have all the wiring as well looking to upgrade in the future but its what I have for now: Im thinking this will be a fairly easy task since I have everything except the LOC.
What im wondering is how would I wire the input to the LOC so that I can power both of my subwoofers. The Infinity subs would be wired to your amp just like any other setup. Your only wiring options are running each subs voice coils series, then parallel the subs for a final 4 ohm load or wire the voice coils parallel, then parallel the subs for a final 1 ohm load.
That amp is not rated as 1 ohm stable, which means you were probably running the amp at 4 ohms in your last set up. At 4 ohms it only puts out watts RMS. Your subs are rated at watts RMS each. Do I need to pull the rear speaker wires from the deck and wire them into the LOC? There is also no remote wire in the harness, how does my am know when to turn on? You may want to get your signal from the speaker wires before or after the stock amp which is located underneath the rear deck in the trunk. I have installed an amp and speakers to my factory stereo, the problem I am having now is that every time I shut off my car and turn it back on there is no signal to the back speakers.
Hi Heather, I think I know what it might be, but to really answer this I would need to know a bit more. A line output convertor? Or did you cut and splice RCA cables into the stock speaker wire? Hi Brandyn, Probably running too low an impedance to the amp, this is the most common issue I see. If your subs are dual 4 ohm voice coil, and you wired them in parallel positive to positive, negative to negative that reduces the final impedance to 2 ohms. Check out this post for more details. Theres no stock sub or anything like that its the low end model jeep.
Its got 2 RCA out-put side i dont know which one to use and about 16 diffrent places to put the wires into i thought i only needed 4 slots.. What are you having trouble with exactly? Running the power wire? Where to get your signal from? How to get accessory?
How to Add an Amplifier to a Factory Stereo | It Still Works
I tapped into the rear speakers before the aftermarket bose amplifier because ive heard tapping into the lines after the amp will really destroy the quality of sound. What can I do to eliminate the high frequencies coming out of the subs. I have a Razor amp and 2 Zstat Razor 12s. Is there a stock subwoofer??? Look for the stock amp under the center console and look for the gray 8 pin plug, pins 7 and 3; 6 and 2. It may be different in your truck, so always use a multimeter and battery speaker popper tester to confirm wires are correct.
Also, on your aftermarket amp, make sure the low pass filter is on. Have you considered maybe the quality of the product is not up to par? Or have you used this product in other applications? They have a few applications for GM trucks shown here and they kick ass. Whenever you build an enclosure while taking into account the cabin acoustics, cabin size, subwoofer parameters, you can really build an awesome sounding enclosure.
All of those things effect the sound quality and output you will achieve. If you wanted to build your own box, we like Bass Box Pro software. How do I do this? The remote turn on could be a white wire in the stock radio harness listed in directechs software for and up. You would just need to hook that up to the remote turn on lead from your aftermarket head unit blue with white stripe.
Therefore when you adjust the bass going to your regular interior speakers, you are also adjusting the signal going to the amp. This boost in signal to the amp can result in a modest increase in bass going through your subs, but it can also put more stress on your stock speakers.
With the factory premium system, the stock amp is already filtering out the bass to the stock speakers. Most likely this is because the signal for the sub is coming from the stock sub, not the interior speakers. Most factory stereos including many premium models do not have a separate subwoofer control adjustment. So whenever I sell an amp and sub to be installed with a stock system I always sell a bass knob.
A bass knob is basically a control knob that is daisy chained between the RCA connections at the amp and your high to lo level convertor. Check out this one from a BMW 3 series we recently did. Should I be able to control the bass through the bass adjustment on the factory radio? I had this same system installed on a gmc sierra and was able to control the bass through the factory radio bass controls but nor sure why it doesnt control it on the jeep?
Any suggestions would be greatly appreciated? Hello I have a question for you Annie? I just purchased an audiocontrol eqs to start my system upgrade in my chrysler with a stock head unit.