If you need to connect just 2 pair of speakers to a HiFi stereo amplifier (that is, 2 speakers to 1 amp), see my article on How to connect 2 speakers to 1 amplifier. Then you’d connect your subwoofer bridged on channels 5/6 or 7/8 and set the crossover to low pass. Go to item page Power Acoustik RZ4-3000D. I’ve thought of a few alternatives but I’m curious to know what the best approach may be. Now the question arises which two speakers to wire in a single channel. Hi there. One of the reasons why is that factory amplified systems often have non-standard wiring connections for the audio path and are prone to bad noise problems if you connect an amplifier without the proper adapter or wiring. -Jbl GX862 speakers Wiring in series is safe for your stereo but cannot give you an excellent experience of listening to music. Sorry for the delay as I was having Wi-Fi problems last night. Some head units offer a feature to use the RCA outputs as subwoofer outputs, so you’ll need to check both things. Yes, you can use 2 Y RCA cable adapters to send 2 RCA outputs from the head unit to 4 inputs on an amp. Hi, I have a set of component front speakers and I am adding an a 5 channel amp. Is there any way of keeping fade control with this set up? How do I hook them up on the amp. Many thanks! Much appreciated! The best strategy is to buy a 6 amp channel or connect 4 speakers with a 4 channel amp. And if you try to increase the volume, you only get a distorted version of the music you are trying to hear. Even a pair like these value-priced ones will be fine in most cases. It uses Class D technology to run extremely cool and yet it’s small enough to fit under a car or truck seat. Many thanks! If your head unit (car stereo) only has 2 RCA jacks or two pairs of speaker outputs, that’s not a problem. I would like to use all 4 channels on the amplifier in order to use the built in crossovers for components on 2 channels and the 8″ sub on the other 2. Hi, it sounds like you might have the Rockford Fosgate factory amp system. Both have their advantages as well as disadvantages. Bridged mode capability is a special design feature in which a “push-pull” set up is created: one channel (normally used for the left speaker) produces a signal that’s the opposite of the second channel (normally used for the right speaker). and a Pioneer 12” Sub (bridged on channel 3&4). The previous owner have installed a 4 channel Boss MC 900 with only one pre amp output. 150W/300 Peak Watts. Using this, you can run RCA cables to your amplifier. In-dash stereos are very limited in how much power they can produce. I had planned on just hooking up the two front door speakers to the tweeters in parallel (two channels) and then hooking up the rear door speakers to the other two channels. The blue remote wire is connected from radio to amp everything is grounded good and I have power to radio and amp with the fuse holder. Additionally, most can be bridged to use 2 channels (or 3, depending on your needs) so you’re not restricted to using them with only 4 speakers. Whether you have a factory stereo or a great aftermarket (non-factory) one, adding an amplifier is one of the best decisions you can make. 18 gauge is enough for many installations, but 16 gauge is a great choice too if the price is right. It’s also just a good value. MUCH faster technique than most guides I’ve read. Hi MJ. Easy enough, right? I’m not sure what vehicle you have so that’s something to bear in mind. I’m using the standard deck and using a 2 channel line level converter. Did you keep the Bose amp originally and replaced the door speakers…then added the 4 channel amp/wired directly to the doors later? 3 replace with coaxial speaker higher than stock. Before diving into installing the wiring for your speakers, … I’m stuck but at least not as in the dark. The remaining 2 speakers are wired each in a single channel. On the amplifier my high level inputs only have 3 connections for each channel. That’s because they’re running directly from the +12V supply. Additionally, they offer more flexibility, as most can be configured for “bridged” operation which can give more power when you don’t need all 4 channels. It’s a good question! 5. As shown in the above diagram, you can connect 2 channels to a 4 channel amp using either the speaker level inputs wired in parallel or by using simple RCA adapter cables. Please help Remove the radio and disconnect the factory wiring plugs or aftermarket radio’s wiring harness. If you could let me know that would be muchly appreciated as im a bit stuck It only takes a few minutes to make a list of the parts, wire, tools, and other bits and pieces you’ll need. Speaker level signal connections near the radio (center console), Wire from the radio to amp (signal wire): 4 channels x 15′ = 60 feet, Wire from the amp to speaker wiring near radio: 4 channels x 15′ = 60 feet, Wire cutters (some crimp tools have this built-in), Wire ties (“zip ties”), 6″ length, bag of 100, A digital test meter for voltage measurement, 4 channel amplifier with speaker level inputs or amp and line-level adapter, 120 feet or more speaker wire, 18 gauge or larger, Crimp tool and butt (wire crimp) connectors (25 or more at least), 100 feet roll speaker wire, 18 gauge or larger, Connect speaker outputs to your amp’s speaker level inputs, Connect a line-level adapter to the radio then use RCA cables to the amp, Connect your radio to the amp using RCA cables directly, An amplifier with speaker-level (“high level”) inputs, Connecting to your amp’s speaker level inputs, Connecting your amp to the radio’s RCA jacks, 4 channels (4 pairs of wire) going to the amp’s speaker level inputs, 4 channels from the amp to the radio’s factory speaker wiring, Turn the stereo’s volume to 2/3 of maximum, Slowly raise the gain controls until the volume is enough. Also, I found that with my car (Impreza) I can run cables through the rubber door boots without disconnecting anything but trim, by using a heavy duty 3 foot long zip tie with the tip bent up slightly like a ski and the other end snipped off, and a little windex for lube. The great news is that you don’t need anything else. A very well written article… But I have a question… Trying to hook up an amp to my campervan stereo, but I have a continuous thumping like a very fast heartbeat when I turn the system on and try to use the stereo…. They’re great for drilling holes in the vehicle’s metal for mounting your amplifier or connecting the ground wire to bare metal. If your amp isn’t 2 ohm capable, let me know. Just set the XD600/6’s input switch to the 2ch. The sound quality will be exactly the same. The advantage of connecting in series is that your amplifier will be safe. Since there is no accessory power mode (no car battery) how can I ensure that the amp does not draw power when it’s not in use? Gallery. Let me know your thoughts. Yes, that’s correct: You’ll run RCA cables to the amp then run speaker wire from the amp. Don’t get the cheapest – instead, get a name brand model you can rely on (like the one above). Thank You, In this case (since you would like to drive the speakers from the amp) you’ll run the wire from the amp to the Metra harness. However, it’s usually fine and a LOT easier to leave the factory wiring in place and connect to it behind the head unit in the dash. Here’s an estimate of the worst-case scenario for the length of speaker wire required. (See my recommendations at the end for some great models). I already had a sub hooked up with a line level adapter..sounded nice but I wanted more from my door speakers. You may also have good luck finding an existing wire color from vehicle wiring diagrams I mentioned earlier or from a Google search. A 4 channel car amp is basically an expanded version of a 2-channel amp. – You mentioned that you’ve already got a line level adapter, so how are you connecting the signal for the 4 channel amp? An increase in load makes your amp hot that is not good for your amplifier. Likewise for the right channel. Sorry one more question. 3. If you wire 2 speakers of 4-ohm in parallel, it results in a 2-ohm load on your head unit. You’ll also need to connect the amp’s speaker outputs to the wire you ran from the radio. They should be, as that’s not a problem I’ve seen much. I know they should be cranking. The head unit’s left channel RCA jack should be connected to the left front and left rear amp inputs. Here are 2 very good amps that are both good values and compact: • Alpine MRV-F300 4 channel amp (bridgeable). A short can permanently damage the output stages of the head unit. Think I’d need to use a distribution block for the grounds too, or can stuff like this be grounded individually in a car without too much worry for ground loop noise? car stereo to a 4 channel amp. To verify this, temporarily use some speaker wire to bypass the factory wiring you’re currently using. So it’s wasting power, basically. It sounds like you’re just wanting to bypass the Bose system and drive the door speakers directly. It will not kill the stereo and you will enjoy the best quality sound. In a few cases, adapters are available to connect an amp to a factory amplified system’s audio wiring, but it’s often difficult or there are obstacles you won’t find until you get started. – 4 guage power supply :). Getting nothing. Also Read: The Best Equalizer Settings For Car Audio Bass, Mid and Trebleeval(ez_write_tag([[468,60],'speakersmag_com-large-mobile-banner-1','ezslot_4',178,'0','0'])); The advantage of wiring 6 speakers to 4 channels in parallel is that you will get full power and the quality of sound will be good. In that case you could use Y adapters at the amp or if your amp has a 2/4 ch. It can make hot and kill your stereo. Happy new year 2020 btw. Really it should be very straightforward in most cases. Hope to hear from you soon. How will I get a signal to the sub woofer? 4 channel amplifiers add more channels into a more compact and efficient design than separate amplifiers would have. If there’s not a decent enclosure (if there are bad air leaks, etc) poor bass happens. Unfortunately, not all speakers will sound good in all car doors. Should I be plugged into output or input on the amp end? Basically, if you want to use all 6 speakers you’ll need to connect 2 pairs in parallel on the amp. ¿ do you advise 4 channel amp + 1 subwoofer amp for the set up or a 5 channel instead? Then go with one of the other 2 options if that doesn’t make you happy. Hi there, Taylor! Alpine MRV-F300 4 channel amp (bridgeable). Always use a reliable connection. Your amp wiring kit will also include a fuse holder that should be installed near the battery as well (most kits include instructions, by the way). Hey Marty – You rock, thanks for the great info. So you would 1) run RCAs from the head unit to the amp and 2) run speaker wire from the amp to the speakers or factory speaker wiring in the dash, depending on your installation. I have a mrv-v500 5 channel amp hooked up and 2 subs. ¿How big and powerful I need my subwoofer to be? ¿How do this subwoofer outputs work? That sounds reasonable if I can fit everything – I’ve got a compact sub under the passenger seat so I’m trying to fit anything under the driver’s, space is limited. Bob. Never simply twist the wire together and wrap it in electrical tape. Do you find any difference in avoiding the factory speaker wires to speakers? Speaker level inputs are common on many 4 channel amplifiers. Connect the amplifier to one speaker. Hi brother.. Thanks and keep safe! Most likely yes, it will be slightly better with +3dB for the rear doors since the highs are facing away from you and you lose sound on them. I have a Sony MEX N4200BT so do I run the rca cables from the radio to the amp and use some speaker wire from the speakers that’s in the doors to the amp? I have an aftermarket Enon G2110F with Qpower 300 watt front speakers and Qpower 700 watt rear speakers ( cheap I know but they sound bad ) and have a crunch 1000.4 channel amp I want to install. any help would be great! … I have a non-powered 12″ JL sub woofer I want to add to the system bridged on channel 3 & 4 screw downs. Hi Marty, your article is very helpful and I was looking for some help with my situation. In this case it sounds like the tweeter outputs are high-pass only and that those won’t work. Daz. It also allows the installer to extend the power wire 1-3' by using the inline fuse holder to add cable to the main run (leaving the 16.5' as one unit and using the FH-44 to "splice" a few feet of wire) Signal for your 4 channel amplifier installation kit is carried by two Klarity Kable 5 Meter (16.25') RCA Cable. Just like you, I also love different music products and in my spare time, I share my knowledge with audio lovers on this site. To do so, run a length of wire from the radio to where the amp will be installed, then allow a little extra and enough length to run around curves and interior parts. Blue connectors are normally the right size for 18-16 gauge wire. Should I ditch the old amp or can I use it to drive the sub-woofer? The headunit only has 2 channels and no rca outputs. If you only have one amplifier, then the value you found in step one is all you need. I recommend a few tools. Once all wiring is connected, bundle it up using wire ties or, optionally, a little bit of electrical tape wrapped around. That shouldn’t be a problem if the amp is ok and wiring is good. Here is my project… I’ll message you at the email address you provided. 1 should I reinstall stock speaker back One idea I had was to just leave the dash tweeters on the factory wiring and let them get a signal / power that way, while using the RCA output to the amp to drive the four door speakers on each of the four signals. Hi Jerry. A great example is this AmazonBasics 100 foot roll. Hi Vic. Never connect both types at the same time! If you can, try to get another LOC and keep the receipt in case you need to return it and try that. Great info! Stated behind it 20w.maybe stands for rms. If it’s not already installed and you haven’t run the wire yet, I’d use 8 gauge. It’s 45W x 4 or 90W x 2 & also has a high-pass crossover option. Good morning, Mike! 3000W 4-Channel Razor Series Class D Amplifier My apology, for some reason I did not see notice of your comment before. Copyright © 2017-2021 SoundCertified.com. There’s a lot to cover here so I’ll try to keep it organized. The result is cleaner sound, less distortion, and great volume – you can crank your music even higher! After installing hundreds of amps in vehicles just like yours I’ll share with you the fundamental tips you need for great results. For example, a 4-channel amplifier has 40 watts RMS on each channel, so 40 Watts x 4-Channels = 160 Watts RMS. So to summarize using it like this should work: – Channels 1-2: 4 speakers connected, 2 in parallel to each channel If using speaker level inputs on your amp, also connect 4 pairs of wire to the output of the stereo. The amp is a blaupunkt 1404 and the rca plug labels are a little confusing. current 4 channel amps do not the list the output of the channel i.e., RF/LF, RR/LR. One comment I do have is that the 4 gauge power supply is larger than you need for that amp. Basically, yes if you connect both pairs of RCA outputs from the HMR 10 to the Boss you will have front & rear fader controls if you’ve got all 4 speaker outputs from the Boss amp in use. Without the brand and model number it’s a bit harder for me to say. Ive tried everything and can only get a very bassed and muffeled soumd out of these 360 watt 5 way 6x9s. The amp is designed in a way that it won’t matter, and it won’t hurt anything. It will be 2 ohms/2 in this case, or about 1 ohm, which is too low for an amp. I spent hours researching and thank god i came across your site. You can damage your head unit or amp), Hi Marty, thanks for taking the time to help us all. Does this sound right? RCA cables (line-level connections) are the preferred way to connect a signal to your amp if you have that option. I hope you can help me out with this or have the time to. Hi MJ and thanks for dropping by! I have a question. It sounds like the 3.5″ are some type of midrange/treble speakers. Or at the least, 1 100 ft roll and 1 50 ft roll. In the meantime I might get everything going with the tweeters on factory wiring until I can get this (wasn’t sure they’d even get a signal with RCA plugged in). My understanding is that the powered crossover splits and cleans up the signal and sends more sound (power) to the amp? That’s because it likely has internal crossovers for the woofer, tweeters, mids, etc. Install the Power Wire. Line level converters are designed to allow connecting to an amplifier’s RCA inputs by converting speaker outputs from a stereo to a low-level signal an amp can use. (Note: I edited your comment to keep it small). Before re-installing the radio connect this wire and run it alongside the speaker wiring. I recommend a 100 foot roll for many installations with a 4 channel amp (see why below). Hello Antwon. If using speaker level inputs on the amp, use the connections shown above. White represents the left channel white red represents the right. The disadvantage is that you cannot listen at full volume for a long time. You can try this method in a safe way without changing any equipment. Just a quick question I have a 4 channel amp and am planning on running the front and rear speakers through it. If the power supply is always on, you can wire an on/off switch to the +12V output, then go to the Pioneer’s ACC wire to act much like an ignition switch on/off wire would. That’s interesting about the amp you have not having the same high-level inputs as the others. Also, be sure your 5 ch. To do that, the amp needs to be 2 ohm capable (else it can’t handle the load). You can also straighten a thin coat hanger and bend the end in a round loop so it won’t snag and use that, too. A great resource for that is The12Volt.com, where you’ll find wiring diagrams for your vehicle and color codes listed. Strip a small part on both the stereo’s speaker wire and your amp speaker wiring. Considering buying an amplifier? Hi there. The GM-D8604 has far more power available in 4 channel mode than the 6x9s (80W each) can handle anyway. If i change the sound to the left side of my car on my head unit i can hear very faint almost no sound coming from the speakers. The information I received from Marty was detailed and methodical, making it easy for a novice such as myself to comprehend and act on. This then plugs into the speaker level input connector. That will mean you can’t finish your project. The only thing that could’ve made this better is if you could have tossed in some 5 chan pointers as well as having 6 rca inputs on the amp. Hi Sam. The problem is that all six speakers are 2ohm, and while the amp is also 2ohm, it’s my understanding that connecting in parallel would drop that down to a total of 1 ohm, or wiring in series (which is a bit more complicated in tight spaces) would increase it to 4ohm and may reduce sound. Each front amp channel is wired with 2 speakers in parallel for 4 ohms per channel. ¿Should I put my tweeter crossover in -3 db for the front if they are located in the dash and to +3db to the ones embedded to the rear doors? However, depending upon your choice you can change the setup.eval(ez_write_tag([[250,250],'speakersmag_com-leader-1','ezslot_2',183,'0','0'])); eval(ez_write_tag([[250,250],'speakersmag_com-banner-1','ezslot_0',140,'0','0']));Also Read: Connect Phone To Car Stereo With Aux Cable. Any input would be greatly appreciated! 3. Installed speakers are….Six speakers 8in 100W/300 Peak Watts….One Subwoofer 10 In. However, the good news is that you won’t need to get rid of the FiX-86. When a signal is boosted and sent out to your car’s speakers the voltage is much higher and the speaker can receive much more power. Your particular amp can handle a lower load than some other amps, so you can (1) run both the 6x9s and the tweeters off of 2 channels, or (2) run the tweeters and the 6x9s off of front/rear channels. I have tried switching out my RCA wires completely as well and it didn’t fix the problem. Yes, you probably should use -3dB, but really it’s best to try it and see. Please advise asap. Yes, if you’re connecting the left speakers to 1 & 3 and right to 2 & 4, that’s exactly right. However, you don’t need to spend much money! Hey Marty, • By using a self-tapping metal screw and cordless drill (my preferred option as it’s fast, easy, and works basically 100% of the time). Hopefully you’ve found this post useful. How did the factory speakers sound? The KTP-455U won’t need very large power wire so that’s another plus. Thanks! The maximum volume you’ll be able to get from your speakers will be pretty low, too. The Best Equalizer Settings For Car Audio Bass, Mid and Treble, How to wire 6 speakers to a 4 channel stereo, How To Wire a 4 Channel Amp To 6 Speakers, The Best Audio Settings For Vizio 5.1 Soundbar, Vizio Sound Bar Turning ON/OFF By itself [solved], Vizio Sound Bar Lights Flashing Up and Down Solved, Vizio Sound Bar Flashing White Lights Solved. Thank you. If so you’ll either need to use an integrator to keep the amp, or delve into replacing it, which will be harder. I gave it 4 stars because the wiring instructions are a little confusing there are 2 power leads and 2 ground leads coming out of the amp so I contacted soundstream which I must the customer support was awesome I found out you have to twist the 2 power leads together and wire to your main power wire same with the grounds. Hi Serge & thanks. Ordinarily the subwoofer amp/etc shouldn’t be able to affect the 4 channel amp. I would say since you’re going to use distribution blocks anyway, just run the amps to the ground block and then out with a single ground wire to a good ground point such as: • Seatbelt bolt location (brass/finished bare metal bolt to the body) If you can’t find any let me know and I’ll look one up for you. Well in this case I was focusing on 4 channel amps as per the topic. Series wiring and parallel wiring. You need to be 100% sure that there’s nothing in the factory speaker wiring that could be causing an issue. The wires are color-coded to make installation easier. Hello, Louis. (Audi a3 8p). Personally I would use #2 from the get-go as it’s a sure thing. So far your diagrams have helped out tremendously but I’m stumped at this point. That’s a good idea about running your wire in the doors! The HPF you can use to block the low-end bass and get more volume & power without them distorting (set somewhere around 56-60Hz or so is good if you have the option). Thanks. I’m assuming the ground I’ve got for the sub is good enough since it doesn’t hum, but right now I think it’s just a single 10 gauge into a scuffed up portion under a seat bolt. Separate front/rear fader inputs health of your comment setting the rear of few! 6 speakers to the vehicle body RCA outputs should be very straightforward in most cases you can connect 6 is... Designed in a way that it won ’ t working this kind of have to connect 4 speakers on channels! Would set the crossover to low pass unit to amp is 2Ω stable for each audio channel 4 mono. 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