1 & ch. Bridging a 4 Channel Amp to 2 Subs. Specifications for Peavey SP 2XT Speakers, Troubleshoot a Harman Kardon Soundsticks II. By using this service, some information may be shared with YouTube. 6 + 8 = 14 Ohms 3) Divide the top by the bottom to find your total impedance. Since your amp does not have an RCA output for the sub you best option is to put the sub in parallel to the speakers. plug your front rca from the hu into channels 1 and 2. connect your speakers using the diagram on the amp (see below). the impedence the amplifier sees halfs when you bridge it. 3 Answers. An amplifier is usually bridged to combine two channels to power one subwoofer, or to combine four channels into powering two subwoofers. Regardless of where the amp is getting its’ remote turn-on voltage, this will allow you to turn the amp off while still playing the radio. So cut 2 lengths of speaker cable for each side (left and right). There is nothing you can do to that amp to get it to put out 300W at 4 ohms. you would have to find out which channel uses it negative terminal and which channel uses it positive terminal to the bridge channel. There's a built in control on the amp that lets me sellect how many channels to use. Do the same with channel 4 now- remember to have the setting into 4channel mode. Today's bridgeable multi-channel amplifiers (2 or more independent channels) have an inverted channel or an on-board switch (to invert the output of the amp) as part of their design to allow bridging. Yes, two (easy) ways to hookup a powered sub in a 2-channel setup. How do I bridge a woofer when I have one single voice coil and one double voice coil? all amps that are bridgeable you will notice their bridged impedence is double the individual channel impedence. This offers twice the voltage and increases your power output. When attempting to bridge two subwoofers together, use a single or dual voice coil to connect the subwoofers to an amplifier. Learning the ins and outs of a bridged circuit is important, though, as an improper setup can damage your equipment. Your amp should have a label near the speaker output jack that indicates the output power (measured in Watts) and the minimum impedance (measured in Ohms). 1) Run the speaker wire from your amp to the sub, then another set of speaker cables to your speakers. Test your amp and other equipment by turning on your car audio system to make sure that the amp and speaker are working properly. If you amp is bridgeable you run + sub wire to ch 1 + then the -sub wire to the - of ch 2 of the amp. front left speaker should be connected to the outermost + and - for channels 1 and 2, right speaker the same for channels 3 and 4. Answer Save. This means that the speaker will allow for more current to run from your amp to your speaker(s) for a louder sound. Below is a direct link to their users manual in PDF format. You tap into the rear left and right factory speaker wiring, and run speaker wires to a speaker-level input plug that comes with the amp. If you choose to wire the subs in series, connect the negative end of the second coil in the first sub to the positive end of the first coil in the second sub (these circuits can get complicated fast). Hi, i am looking to buy a 2 channel bridgable amp that is rated and i assume only stable at 4ohms. This allows for more power (watts) to be sent to your speaker (s). Assuming the sub has a 4 ohm voice coil...and only concentrating on 2 channels, you need to take the positive from one to the positive on the sub and the negative from the other to the negative on the sub. Learn from a financial expert: How to Raise Your Credit Score. This article has been viewed 228,454 times. 1) take the front RCA' s to channels 1&2 for stereo. For tips on the best way to set up your home network, see, All tip submissions are carefully reviewed before being published. Include your email address to get a message when this question is answered. as already stated you need to provide more info about the subs and amp. He has dedicated his life to researching and writing about diet, nutrition and exercise. 2 speaker-level inputs. Bridging your amp combines 2 amp channels into one, giving you more power. Also, there is the question of whether or not your amp can handle additional speakers. it's on the small side to drive a subwoofer, but yes, you can bridge two of the channels (probably the "B" channels with that amp) to drive a small 4 … This should be indicated on the documentation pamphlets that came with the amplifier, or the amplifier itself. wikiHow's Content Management Team carefully monitors the work from our editorial staff to ensure that each article is backed by trusted research and meets our high quality standards. A two-channel amp will always be bridged into one channel and a four-channel amp will be bridged into two. Connect the black speaker wire to channel 2's negative terminal. Pull it up and you can see all the info you need on your amp. Normally, your 2 channel is running at 4 ohm for each channel. According to the manual there's two ways to run this set up and am unsure what is the better way to go? Bridging the channels increases the power output. Put the red wire into it … Mate i dont have much experience with sterio installs but from what i know a monoblock runs a sub alot better than a 4 channel amp even if it is bridgeable. How do I stop a new stereo amp from locking on protection mode with the first hard hit on bass? How do I bridge a 4 channel amp with 2 SVC subs and use all 4 channels? wikiHow is where trusted research and expert knowledge come together. Bridging a four channel amplifier is no different than bridging a two channel amp. By signing up you are agreeing to receive emails according to our privacy policy. Finally connect the negative end of the second coil to the negative bridged terminal on the amp. Step 1: First of all take the wire with the double end of your speaker and cut both the edge with the wire stripper. The majority of amps on the home theater market are only stable at 4 ohms when bridged. You’ll have one going from the switch to the stereo and one from the amp to the stereo. If the dual VC was 2x 4 ohm, that would give 2 ohm; if the SV is 4 ohm, you add the 2 to get 6 ohm. For output, connect the amp's right negative output terminal to the sub's negative terminal, and the amp's left positive terminal to the sub's positive terminal. Use the positive from channel 1 and the negative from channel 2 to one of your subs. Separate about a half inch of the edge and pull out the insulation. Thanks to all authors for creating a page that has been read 228,454 times. Read the user's guide or do your research. Make sure your amplifier can be bridged. I'm using the bridged 2 channel that sends out 150 RMS per channel… Be sure that your use the values for bridged mode, it is usually double the minimum impedance as stereo mode (meaning you need a much high impedance to run a bridged system) a… If it is capable of driving (powering) low impedance loads, then it can be done. Use extreme caution; wiring your amplifier incorrectly can cause severe damage to your equipment. To bridge the amp, connect the subwoofer or bridged speaker positive (+) terminal to the positive amplifier bridged terminal label, and the speaker negative (-) terminal to the negative bridged amplifier terminal also. 48/14 = 3.43 Ohms (rounded), You can also use an impedance calculator such as this one. These 2 terminals are normally the outter most on these 2 channels or the amp will be marked on how to bridge it. Bridging an amplifier cuts the resistance load (measured in ohms) in half, which can cause it to overheat. If wiring in parallel, connect the negative end of the first sub's second coil to the negative end of the second sub's second coil. The formula for finding total impedance for speakers wired in series is Z1 + Z2 + Z3 …. On your four-channel amp, you should see 8 terminals: channels 1 through 4 each have a positive (+) and negative (-) terminal. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. Locate the four terminals where the speaker wire hooks up to the amp; there will be a positive and negative terminal for each of the two channels of the amp. Bridging a two-channel amplifier for your car audio system is very easy to do, but if done incorrectly, you'll get no sound from your speaker(s). What are the disadvantages of bridging one or more subwoofers to an amplifier? How to Bridge a 2 Channel Amp. input switch that shouldn’t be needed. It is (Z1 x Z2 x Z3…) / (Z1 + Z2 + Z3…) =Ztotal. ), you can blow out your amplifier. Some amps are not rated for going lower than 2 ohms, so keep that in mind when bridging an amp. Joseph Eitel has written for a variety of respected online publications since 2006 including the Developer Shed Network and Huddle.net. Then use the positive from channel 3 and the negative from channel 4 to your other sub. Channel 1 does the positive side, and channel 2 does the negative side (depends on the amp). If your amp supports a 2 ohm load to the mono channel then wire your Voice coils in parallel then hook it to the mono channel. This means you will connect the positive wire to terminal A while the negative wire is connected to terminal D. For sub 2, connect the positive lead wire to terminal E while the negative lead should go to terminal H. Now your amp is bridged! Then connect each half of the cut remote wire to each of the 2 connections on a toggle switch. The same with the other sub + ch3 - ch4 that's how to bridge your amp. a 4 ohm sub is going to be 4 ohm, no matter what you do to the amp. The minimum impedance that amp can handle in bridge mode is 4 ohms so do not attempt to go any lower. Favorite Answer. Before attempting to bridge your four channel amplifier, make sure, it's bridgeable. wikiHow's. It's important to keep in mind that when you bridge a two-channel amp, the speaker resistance---measured in ohms---is cut in half (i.e., 4 ohms would go down to 2 ohms). He graduated with honors from Kellogg Community College in 2010 with an Associate of Applied Science. If you're only using 1 speaker/sub, you run it in Mono. If you’re ready to begin the integration process, come talk to us specifically about the details of your system - room, speakers, amp, listening position, style of music, current bass problems. Relevance. Bridging a two channel amp refers to combining the two channels into one. If it's bridgeable, then it can either run 2 ohm load (double power) for each channel (non-bridge) or briged into one channel at 4 ohm load. If the amplifier is used, or lacks documentation, go online and check for the specifications on the manufacturer's website. Step 2: Now, move the screw of terminal 1, the first channel anticlockwise. Next, connect the negative end of the first coil to the positive end of the second coil. The term "bridging" means that you're combining two channels of your amp into one. If it doesn't then just hook each voice coil to a channel. Locate the specification labels for your system. By using our site, you agree to our. Best to bridge amplifers that are specifically designed for it. If you are wiring the coils in parallel then run a wire from the first positive terminal to the second positive terminal and a wire from the first negative terminal to the second negative terminal. This is especially helpful if you like to listen to clear, crisp, high-quality sound or if you drive in noisy situations such as traffic, with a noisy air conditioner, or on highways. If you really can’t stand to see another ad again, then please consider supporting our work with a contribution to wikiHow. You could connect a speaker to each channel. Use caution when wiring any electrical devices. A few use the left negative and the right positive. Preparing to Wire Your Subs to a Bridged Amp, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/7\/7b\/Bridge-Subwoofers-Step-1-Version-4.jpg\/v4-460px-Bridge-Subwoofers-Step-1-Version-4.jpg","bigUrl":"\/images\/thumb\/7\/7b\/Bridge-Subwoofers-Step-1-Version-4.jpg\/aid1390341-v4-728px-Bridge-Subwoofers-Step-1-Version-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"