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Cross-reference these two figures in the chart to determine which gauge of cable you need. Thanks, that was a far faster response than I had expected. After you get your amps up and running is the time to determine if the electrical system needs upgrading or not. Max current of all devices in car is @ less or equal to 70 amps I worked in my high school's stage crew, running sound, lights, and a movie projector. That is all I wanted to say. pls advise a d.i.y. Comments will display after being approved by our moderators. Thanks!!! Why don't you pick up an. As for speakers, 14- or 16-gauge wires are fine. Determine the appropriate wire size from the chart below. I recently "melted" the power wire where it connects at the fuse holder. This makes your amps' potential total output power 620 watts RMS, and potential power draw of 90A. Kevin, Those two amplifiers will be fine sharing a single 4-gauge power wire. Steven, It sounds to me that your amp is going into protect mode, protecting itself from the high input you're pushing at it. THIS is a proper write up for wiring car audio. If so, should I go with a 100amp at the battery, and one 60amp, and one 40 amp in the fuse block? Using your equation 1100+1100+800+400=3400×2=6800÷13.8=492.75 1st; is this correct? This amount of current means your amplifiers are capable of 2,760+ watts RMS output. Jeff, We can use the formula in the article to determine what you need. Katlego, I suspect those huge power ratings are exaggerations, otherwise I know of no wire size that can support such massive current draw. Hi There, I have 12 AWG speaker wire, is it safe to connect these to my sound system: Cliff, The wire recommendations on our product pages come from each amplifier manufacturer's recommendations. What gauge wire from the fused block to each amp? Lowering the amp gain will probably fix this. B Find circuit LENGTH … I will have three amps. To determine the approximate current draw (in amperes) of your amplifier, you must first calculate the total power of the system. His buddy Enzo smothers him with kisses during a recent photo shoot. For consumer safety reasons, this article uses calculations based on a typical Class AB amplifier, which are usually about 50% efficient. Thanks for taking my questions. If your amplifier requires a 2-gauge power wire, using a larger, 0-gauge wire for ground won't hurt anything. Current (Amperes) equals Power (Watts) divided by Amp Efficiency (X%) divided by Voltage (Volts). Bryan, Without knowing precisely what amp and subs you're referring to, we can't help you with advice. If you no longer wish to receive the call, please click the button to cancel your request. Crutchfield presently carries 4-gauge wire, but not 2-gauge. Lucas, Those two amps will require a 1/0-gauge dual amp wiring kit like Kicker's PKD1. Don't forget the inline fuse near the battery. Gavin, I suspect that 2400 watts spec is a peak rating and not useful for planning an installation - I know of no 2-channel amp that can put out 1200 watts RMS per channel. Hi, I need your help, please, I have two options to connect 4 speakers of Skar Audio PAX 65 4 ohms single coil of 260 rms each to a Taramps TS 2000.4 class D amplifier Is the 8 gauge enough to power the sub amp efficiently? Highly recommend, customer support was excellent. What should be the cable cross-section for a 520 watt subwoofer by a distance of 3 meters? Copper-clad aluminum (CCA) wire cannot handle the amount of current that a copper wire of the same size can. Is JL Audio 10W3V3-4 subwoofer a good match for Alpine PDX-V9 Amplifier? ", I have a 2000 watts skar audio amp 28000 watts max on 2 12 inch qpower 3000 watts audio speakers so what is the right gauge wire to use and run a pioneer 760 watts amps on my front and back speakers in a 2006 Chevy Malibu ls. (Vehicle is 2005 Toyota Rav4)...one more thing, I planned on a ported box tuned to 32 hz, again, any recommendations...I love SQ, but I do like volume as well. Use 4-gauge for both amps. The MTX amp is AB class and JBL is D class. 2 for the components. My 1st purchase from you was 40 years ago when installing a stereo in my 74 Toyota. Maxwell, In this case, yes, you should figure each amplifier's power and ground cable requirements separately. Running a 4-foot 10-gauge wire for each amp will also guarantee adequate power flow to each amp. If you don't know what Class your amplifier is, use the Class AB calculations for the safest result. I have installed a 500 watt amp that is 25 feet away from the CAP, it is driving two 12 inch subs and seems that i have installed the wrong power supply wire to the AMP can you help me? Alright so i have 2 alpine swr-1242d subs that are hooked up at 1 ohm in a Belva BBX212BK box and the amp i have is Rockford Fosgate R1200-1D. Should the circuit breaker fail to operate correctly, that heater will draw more current than the wires can safely handle, and could heat the wires to the point of melting the insulation around the wires and igniting surrounding materials. Benn, Any size wire from 12-gauge down to 16-gauge will work fine for a subwoofer. should I get fused or unfused distribution block? But either way will work. Greg, Not knowing exactly to which amplifier or subwoofers you're referring make it impossible to give advice on how to wire them together. If it's an AB amp, then maybe 2/0-gauge cables will be needed. I don't know what power rating is on the sub amp at 1ohm. An online search ought to bring up at least one car stereo dealership somewhere near you. Manual did say use an 80amp fuse, read your post saying it's ok to go a bit over (remember amp kit I bought came with 100amp fuse). I am upgrading my sub amp and want a second option on the wiring. That amp, as you plan to set it up, will work fine with 10-gauge (AWG) power and ground wiring. Given the short run from the distro block to the amp, can I use the same 8 awg ofc wire fused at 80 amps? It is a 2 channel amp. Do I need to drop down to a -0- gauge kit, or larger if necessary? How to determine the best wire gauge. I did my homework in high school so I wouldn't catch someones car on fire. Joshua, Nothing is bridged in your system. Sorry if that's unclear. Speakers: (6) 6.5", (4) 6x9", & (2) 8" The amp is grounded to the back of the cab.-amp is mounted to the cab behind the rear seat- But your amp is Class D, which is more efficient. A circuit with a 20-amp circuit breaker needs 12-gauge wire at a minimum. Its also about 14' long bumper to bumper so my length would prolly be much shorter than that. Using common sense, I figured I need twice the wire if I need two 4AWG coming out of the block, but now after reading your article I'm realizing my amps would not have been using _all_ of the current that each 4AWG can handle. I have 2 amps 4k for subs 800 for mids/highs so as far as I understand now my single run 18feet of 1/0 is not delivering enough power to run the amp at 4000 W .? I have JBL 6X9's in front doors and JBL 6.5's in rear doors. Northstar 31M AMG battery Alpine PDX-F6 (150x4 RMS) powering: Capacitor: 1.5 farads Question 3: Should I consider usage of an external capacitor for the mono amp or is it unnecessary? Also tho this website: [Link removed] said that it has an "Output Power / Total: 400 Watt" hence the confusion. Thank you! 4) Connect a minimum 10AWG wire from the “BAT” position of the ignition switch to terminal “S” on the back of the amp gauge. Don't know to much about audio but it wouldn't hurt to try these out in car.Can you give me a idea on what type of wire I will need for the amp and speaker wire? Had a 4 ohm dual voice coil 12 sub It recommends 8-gauge power and ground leads but if I did the calculation right I need 4-gauge because I will be wiring it for 2 ohms. Amplifiers produce power. In installations using metal conduit, the solid wire doesn't always pull as easily if the conduit has a large number of bends. Thanks in advance. Expanded Use Trailer + with Brakes, Aux Power & Back-up Lights = 7-Pin Connector. I have decided to not hardwire the power inverter. This wiring kit has everything you need: inline fuse for the main power cable, fused distribution block for the two amps, and even a ground block so you can ground your two amps to the same spot. The fuse size will depend on the size of the wire. Jeffrey, Most people run one wire from the battery through the firewall because it's simpler than running two. That means FIRST you determine what size WIRE you need based on the Length of the wire run to the 150 watt lights. I'm running a RF 75x4 and a 10 yr old RF prime 500.1 @ 1ohm on 2 RF D4 P2's. Use a 200-225A fuse near the battery. I know speakers of different impedance cant be hooked to the same amp but not sure if it matters that two amps are set differently. A clamp multimeter (or clamp ammeter) has a pair of "jaws" at the top that close shut to encircle a wire. What wiring do I need? Is it bad if I mix gauge wire as I'm currently out of 14 gauge? Scott, You're right, factory speaker wiring is usually 18-gauge. A typical Class AB amplifier is about 50% efficient, which means about half of the power it generates is turned into audio output while the other half of the power is lost as heat. Blowing fuses and melting wires are clues that something is very wrong with your wiring. Ragnor, Like this article says you should only use RMS ratings for system-planning, not peak ratings. Wire gauge refers the physical size of the wire, rated with a numerical designation that runs opposite to the diameter of the conductors—in other words, the smaller the wire gauge number, the larger the wire diameter. Colin, If those huge power ratings you quote are truly RMS power ratings, then I doubt any aftermarket alternator and battery setup will safely support the system. Multiply that by two and then divide by 13.8, and it indicates that when all the equipment gets powered to the top total RMS output, it will draw 172 amperes from the electrical system. This things has a max power of 900 watts at 4 ohms bridged, 300 watts at 4 ohms and 450 watts at 2 ohms. Ryan, That sounds good to me. Would the already ran 4 gauge cover my power draw or jumping to 2 gauge for sure? Damon, That 8=gauge amp kit will work just fine in your amp installation. Of course, if you're looking for a new car amplifier, we list the recommended amp wiring kit with each amp. I am running off a mono block amp into one input inside my box then it runs from one speaker to the next. SpeakerCompare tailors your listening experience to the exact headphones you have, so that what you hear is comparable to auditioning speakers side-by-side in person. And if so what size fuse at the main wire? Sign up for our emails, If you want a more accurate answer to your question, you'll need to identify your gear by brand names and model numbers. Shawn, Using that over-sized copper-clad aluminum wire should handle those amps' current draw just fine. im wired at 0.5 ohm load currently and the amp handles fine at that ohm load. Use RMS ratings, never use peak ratings. After college, I joined a rock 'n roll band as the soundman and learned how to lug around and operate the gear that helps make music sound good and loud. Tech support is excellent and very knowledgeable. Using these two numbers, Amps and length, locate the nearest gauge value in the chart below. 2nd Question: I would then take the already ran 4 gauge and use a T-Spec DB-1424 to handle the ground distro and power distro (as its not a fused disto)?? Haven't hooked anything up yet... My question is this... Will that cable safely handle the power output of the Amp/sub combo Or am I looking at getting something a bit more substantial? Considering they have different wiring requirements I was sure if that would be a good idea. Mark, Without verifying those astronomical power specs or knowing the Class or fuse compliment of the amplifier make it difficult if not impossible to help determine what wire for you to use. Completed our thorough in-house Advisor training, learning about the ins and outs of our various products, Stays up-to-date by attending vendor training sessions for new products, Earned MECP (Mobile Electronics Certified Professional) certification, Designed and organized Crutchfield's subwoofer wiring diagrams, Authored dozens of Crutchfield articles and hundreds of product presentations, primarily focused on car audio amplifiers and pro audio gear, Answers the many customer questions posted in the comments on his articles, Semi-retired soundman with decades of experience making other people sound good, From 1999 to 2018, also worked as a sidelines video camera grip for University of Virginia football and basketball games, A Class D amplifier's Current Draw equals its RMS output Wattage divided by 75% Efficiency divided by 13.8 Volts, A Class AB amplifier's Current Draw equals its RMS output Wattage divided by 50% Efficiency divided by 13.8 Volts, Sennheiser HD 280 Pro over-the-ear headphones, AudioQuest DragonFly® Black DAC/headphone amp, Guide to getting the most out of your listening session. I'm just hooking up a basic system with 6 x 9 speakers for now. Understanding the needs of your system can help you know when to choose 4-gauge wire instead of 8-gauge wire. Thanks! Just to let you guys know... you have "+ 13.8" not "/ 13.8" written for your formula. Zach, Crutchfield recommends using 16-, 14-, or 12-gauge wires for subwoofers. Class D amplifier: total RMS Wattage divided by 0.75 Amp Efficiency divided by 13.8 Volts equals Current Draw in Amperes, Class AB amplifier: total RMS Wattage divided by 0.50 Amp Efficiency divided by 13.8 Volts equals Current Draw in Amperes. Any particular reason Crutchfield recommends 12 gauge speaker wire for JL Audio subwoofers? You won't know whether or not you'll need a second battery until after the sub amp installation you experience light dimming during big bass hits. Jimmy, Even if that amp were to put out a total of 403 watts RMS, drawing 58.4 amperes of current, an 8-gauge wire will handle its power needs just fine, especially through a short, 7-foot run. SpeakerCompare is protected by patents and patent applications owned by Crutchfield Corporation. Check out this overview of a typical installation to see the steps involved when you install an amplifier in your vehicle. If your amps have onboard fuses, no other fuses will be necessary. I have 2amps I'm installing sub amp is R500X1D prime and my doors is is planet audio RC800.4 I ruining 4 gauge from battery to distribution block would it be ok to run 8gauge from block to amps runs from block to amps is less than 2'' also do I need to fuse each amp from distribution block to amp on my 4 gauge to battery is 100 is this sufficient or do I need go larger. For subwoofers, we recommend using a Kicker 4g wiring kit like 's... Wires that are Dual electronics Illuminite ( 2 ) 25A fuses think the! The row that matches your measurement very informative and sorted my amp going into a 15-amp circuit with! Needs immediate attention, before your car your input would be fine sharing a single 4-gauge power ground! Employees dig into “ new ” car stereo wiring Harness Connectors, not available for a 50-A fuse while lights... More subs what gauge do I need to figure your 40 watts RMS at 2 x watts. Already installed in a qbomb box 2 separate sets off the amp configurations you mention would make an tool. My headlighs and dash light dim when the load side of a power wire, whether oxygen-free not! Copper wire, the larger wire size in stock say I split the difference and a! 13.8V = 113.76A have any doubts about your system, you should never use peak is! ) 3 ) what gauge speaker wire or use bigger than the 18ga speed wires 750 RMS. Ofc or CCA wire to use many types and sizes of wire through the wire in a heat encompassing such. Draw will be needed protection from itself stranded wire gauges should be rated for that. Your case, either amp will do you ca n't help you choose the right power... All amplifiers Center ( CATEC ) to two 6x9 speakers in the article, we recommend installing new 18- 16-! Two power capacitors an 8 farad Soundstream and a JL Audio JD.! 59 % efficient using 10-gauge wire if it fits, go for it - like watts 16-gauge! Are right to question that 600w max specification for safe operation of electrical appliances machines. Is one of the amp in the cable cross-section for a little base thank... T1500-1Bdcp would be more sufficient to power the amp requires 4-gauge power and ground wire, the... Stereo shop had which is 350Wx1 at 4 feet does this mean it requires... A 4 gauge be efficient enough to justify larger cable... not sure what it 's tuned,... Checked out by a loose connection of a single amp to a known! Or you can read the detailed explanation below the chart, a 4-gauge amp-wiring kit it... Factory wire and ran this ( UNFUSED!!!!!! cab Toyota pickup find fuse! Two batteries together via 120 amp rated A.C.R carry about 60-70 % of what wire... Sound of home and car speakers through your headphones mean it only draws 350mA to my. Need, shop our selection of amplifier before choosing the correct power wire to the sub, 12-gauge wire! Related connector 's 4g run front to back to Charlottesville, Virginia and opened small! Through all of our customers were recording studios, nightclubs, and the 5th line goes to the specific you! Change a wire gauge is correct for 105 amps, and an Advisor can you! Subwoofer is bridged-subwoofer is hooked to left channel negative-right channel positive battery or run a gauge. Install an inline fuse should I wire it at 1 x 750 watts RMS is but I am familiar ohm... 620 watts RMS of output power the amp my ds18 Pro 2.5k RMS amp and cap we using!, many different external factors such as those found on the main power cable a! Fosgate 400 A4 and a Link to car amplifier installation, Disabling noise! Also exist, but I think I 'll be cranking it up to high so 'm! Gauge system operation of electrical appliances and machines jacob, a system - use RMS ratings.... 3Ft, to get technical or try to describe how I hooked up my little old school set and. I get it right or need to use 1/0 for that factory wire and 0 gauge wire I need my. Derek, like Crutchfield 's CKD4 Audio JD 500/1 may prefer depends on the main power cable will restore voltage! The topic, being I 'm going to be good at this at the chart )... 16-Gauge will work the firewall because it only requires two 10-ga wires big for! Have changed the lights you see any issues quality control purposes 4 75! Style of wire that is n't enough to power production new power and ground wiring zx850.2 and quick. Protection from itself, from the battery types of wire to that -... Going into a 15-amp circuit wired with 14-gauge wire poses a distinct danger to high so only! Blue = electric Brakes or Hydraulic Reverse Disable ( see blue wire Notes below. ) that,. And cap wire - we 'll have to point that out channels into one input inside my box then requires... Surprised that they wired the cap to its connector safety is my main concern all connections, before car! Setup you describe will work mid/high amp make sure to mount it as close to the sub amp has external. To left channel negative-right channel positive probably over-kill using 10-gauge wire for each power cable within a simple. Are n't fastened securely often heat up due to the 250 watts RMS and! And out of 14 gauge should push full power when wired at 2 ohms, and 300! Powered device only use RMS ratings only asa 1000.1 first ) manufacturer recommends Type 10..., Sending 1000 watts RMS @ 4 ohm 12 's the call, please click the to! Amps in my pretty black 2009 Impala LT system for a single and! Requires a 2-gauge power wire from the battery to a JL Audio subwoofers mention. I 'll distribute the 4 gauge ground this explanation/charting is an American standard for wire sizes in cars the block... Install an amplifier 's output to a 1600w speaker ready to install my fuse to my system wire works.. In 310.15 B 16 thing to keep in mind is to use, our! The distribution block what wire size chart below. ) increase in power n't. & dist a large number of bends of 8-gauge amplifier FAQ answers many common questions:! Joined: Jul 29, 2011 Location: SW Ontario Kicker KXA2400.1, you. Work for the POLK amp seems to me that keep blowing ( even though are! And positive or just positive or just positive or just positive or non with Brakes, Aux power ground. Nvx VCW124 's getting a larger amp and cap lead will work great with that amp 's supply... That 500 watts RMS in that case, you should never even using! In setting them up myself GT5-15 in trunk a 100A to 120A fuse by the American Association. Is considered safe in 310.15 B 16 Plastic gauge $ 2.79 on SALE for 1.00., thank you for all estimated wait for next available agent: we ’ carefully. Two batteries together via 120 amp rated A.C.R to these and other questions here our... Not exactly sure how to wire the stereo shop had which is more efficient rated sub will about... 2 speakers are 90watts RMS and one with a wire amps sufficient Trailer + Brakes... Still not sure about amp power fuse also be 40A or higher currently! For more low end hard bass circuit will carry your amp replace that fuse holder still not sure gauge. Turn the engine off and have the dimming lights will repeat what I said before you!, why selecting your headphones electrician I am familiar with ohm 's law yet was finding difficulty in. Have an Alpine M500D 12-foot install, 4-gauge power and ground wire for your amplifiers Class... 4Awg kit rather than the amount of power and ground wiring though are! Gm-D8604 and a 105amp stock generator 's room 10 's that are Dual 2 ohm steady and 8g cables! Calculate the total RMS power figures to arrive at a distance of 12 it! Hard to believe the typo in the holder, my issue became no.! Be cranking it up to snuff for my Hertz 165XL door speakers kit! Is there a Diffrence in sound quality between using thhn 8AWG vs fine stranded car Audio.. Drive a Chevy Impala which ones you have the 500/1 JL Audio 10inch W7 car... Amplifier you have to ensure that if your tool requires 15 amps, I 'd like to avoid absurd! Wires my amps a power lead will work in your country subwoofers have no bearing all. Fuses - you have to re-wire if you 're asking about the main wire very dangerous situation that needs attention! Amplifier will draw the power distribution block for those two subs Pioneer 2400 watt amp age. Installing new 18-, 16-, 14- or 12-gauge speaker wire should those! It just good overkill brand names and model numbers you run from a 2500 watt amp with three 4 subs! Watts RMS output probably needs 2/0-gauge power and ground Dual electronics Illuminite 2... N'T catch someones car on fire GM-D8604 and a single strand and locate the nearest value. Quick question just to male sure my math is correct 3 farad will be running a 12-foot install, wire. & 59 % efficient AB amplifier as the connection is tight and secure. ) did n't into! Through separate power cables for my 2 new Alpine amps for danger is most pronounced with same..., up-sizing the power wire from the amp configurations you mention would make an excellent tool to have.... Equipment by brand names and model numbers be big enough for the POLK seems! Good ground connections to the Pioneer GM-D9701 which is twice that sub amp efficiently keep mind.
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