how to bridge a 4 channel amp

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Hello Bill. Take a long speaker wire that runs from the amplifier to the sub. 8 subwoofers are an option or a dual 4 ohm voice coil subwoofer could be used. It is possible to bridge your Amplifier if you have difficulty getting sound through your Amplifier. 4-channel amplifiers provide extra power to speakers in live performance settings and can be used to boost individual channels in stereo or multi-track recordings. Check your Amplifiers manual or contact the manufacturer if you arent sure what type of cable you need. This is normally not used by most people, however, it does have some benefits as well as drawbacks. If the broken lead is connected to the Amplifier, it will create an electrical short, which could damage the device. It is necessary to reconnect everything correctly if the Amp has been connected backward. However, theyre intended for use with 4 speakers or 2 speakers and a sub not both. Thanks to all authors for creating a page that has been read 1,043,591 times. Youll find two pairs of wires - one each for the positive (+) and negative (-) channels. Unless you are an expert, it is a good idea to check your owners manual or search online before you start. The midrange will receive 1/2 the power of a 4 speaker. Use it to try out great new products and services nationwide without paying full pricewine, food delivery, clothing and more. All Rights Reserved. He worked professionally as an MECP-certified mobile installer for years before moving into the engineering field. Follow the procedure below to bridge the amp: Step 1: Locate The This may ultimately damage your amplifier. But in case you havent done it before, you can follow the guide above on how to bridge a 4-channel amp. A stereo amp may convert to a mono (bridged) amp, a four-channel amp could be converted to a two-channel bridged amp, and so forth. 3 Jan. Where to connect remote wire for and Amplifier? If it requires more power, you can adjust the crossover settings again. - Updated First, adjust the crossover switch to a low-pass filter on your amp. This includes both for normal stereo usage as well as a rating for bridge mode too. This is a very common wiring use of a 4 channel amp for situations in which youd like more power available and dont need 4 separate amplifier channels. 8 Mar, Last Updated on A screwdriver for tightening screws in the amp. Thats especially important because subwoofers are big, heavy speakers that need more power than small speakers to produce the bass sound you want. 19 Mar, Last Updated on Sorry! If youre looking to bridge a -Channel amp to subs, there are a few tips that will help make the process easier. If your amplifier does not claim to be able to bridge. Adding depth and power to yourmusic listening experienceis easy with a 4-channel amplifier. 2. Before attempting to bridge your 4 channel amplifier, make sure that it is bridgeable. Hence, check the detailed specifications beforehand. Bridging an amplifier cuts the resistance load (measured in ohms) in half, which can cause it to overheat. It will be in the general range and close to its advertised rating, however. Lastly, an enclosure or box holds both the speaker cables and the Amplifier. A 2 x 50 watts/channel amplifier is connected to two 4 ohm speakers. First, be sure to have the correct cables on hand. You can make things easier by connecting the other end of each speaker cable to one of the amplifier terminals. Flat (crossover off) or 56-60Hz high pass. If the Amp is operated at two ohms, it will produce more power and play louder than if operated at four ohms. 20 Jan, Last Updated on Connect the subwoofer output of the Channel Amp to the subwoofer. Before that lets delve into some vital details. Almost all of them can drive 4-ohm loads when bridged, but some may be able to drive 2-ohm loads on each channel. DIAGRAM How to wire a 4 channel amp to 4 speakers and a sub, Click to download the printable speaker diagram, Using power resistors for harder installations (4 ohm min. Enjoy! You can make it happen if youre connecting a dual-voice coil subwoofer. System 2: 2 speakers in parallel to each front channel = 2 Ohms x 2 + 1 subwoofer wired for 4 or 2 One solution is to run a second speaker in parallel to get 4, but thats not usually practical to do. However, itis possible to wire a 4 channel amp to 4 speakers and a sub! Learn more Bridging an amplifier combines the available channels into one channel with half the ohm (). You need to learn more! 14 Mar, Last Updated on Make sure you secure the connections and then screw the screw down to connect them. $149.99. Next, run another RCA or speaker wire from D on the amp to the negative terminal of the subwoofer/speaker. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Soundgearauthority.com is reader-supported. Note: Most standard aftermarket car speakers are 4 ohms each so Ill use that assumption for my diagram. Example of wiring speakers with a tri-mode capable amplifier. With some math, we would find out that our little example amplifier puts out 14.14 volts when it reaches 50W into a 4 ohm speaker. Example #1. The easiest and a safe way to connect 4 pairs of HiFi speakers is to use a 4 zone speaker selector switch. This meant having more power available at my disposal and more flexibility even if I changed my speaker setup later. Now, turn down the pass filter dial so that you can listen to the upper range. Alternatively, I have become aware of wiring 8 speakers to 4 channels. Make sure that your amp does not overheat or get damaged in any way during the process. If youre using an amp and subs, youll need the right cable. SoundCertified.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Peak power differs from continuous power. To create this article, 37 people, some anonymous, worked to edit and improve it over time. Never run an amplifier with a speaker load thats lower than the rating! Then, use a passive crossover to connect the output of the passive crossover to the input of the component speaker. Very helpful and educating. Will this be a viable option if every 2 speakers are wired in parallel? Therefore, I recommend that you check your amps specifications before the bridging process. 16 Feb, Last Updated on % of people told us that this article helped them. April 3, 2023, By William Understand The Amplifier You're Using As with method 1, you must determine whether your four-channels amplifier can be bridged. Amazon, the Amazon logo, AmazonSupply, and the AmazonSupply logo are trademarks of Amazon.com, Inc. or its affiliates. A speakers impedance value, measured in Ohms, is just the total measurement of electrical resistance the amp will see from the speakers voice coil. Whether youre using the speaker wires, RCA cables, or line-out converter, connecting the subwoofer/speaker to the amp follows the same procedure. Both of these options are suitable for connecting multiple amplifiers to subs simultaneously. Moreover, if you bridge them, it can reduce their load resistance to a great extent. And be sure that the coil is within the range your amp can handle. This eventually brings more power to both channels. This will help to ensure optimal performance between your Amp and sub. Your. You will have to connect the speaker wires to the terminals of your amplifier. This is where bridged 4 channel amp wiring diagrams come in handy. Read on to find out how! Pros of Having a Series Circuit This is 80 Hz or below. Eight terminals on the 4-Channel Amplifier and channels marked as 1,2,3,4,5 ( Each channel has positive and negative terminals (Two Terminals + AND -), Channel 1 > A for Positive > B for negative, Channel 2 > C for positive > D for negative, Channel 3 > E for positive > F for negative, Channel 4 > G for positive > H for negative, Now connect speakers ( use wires connected to them). A 2 x 50 watts/channel amplifier is connected to two 4 ohm speakers. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); I'm a car audio fanatic and professional electrical engineer. Follow these troubleshooting tips if you have a 4-Channel Amp and speakers but no subwoofer. The good thing is that you can even bridge a 4 Channel Amp to 2 Subwoofers. Speakers dont measureexactly 4 or 8 ohms! By using this service, some information may be shared with YouTube. 4 Apr, Last Updated on Verify if it is feasible by reading the user handbook. WebThe distortion channel on my amp now sounds like what used to be my clean channel but only if I crank the volume to highest setting and the actual clean channel is dead silent. These details are mentioned in the pamphlets or mentioned at the back of the amp. This voltage difference is twice that of one channel alone. This can put too much strain on your alternator or speaker. 4 channel amps are great and have a lot of flexibility for the most part. An amp wiring kit like this one will make your life easier! If both of them have a screw-down clamping system, then you should use the speaker wire. - Updated Connect the Amplifiers SUB OUT port to the subwoofers RCA inputs using a Y-splitter cable. Check the specifications of your Amplifier to ensure it is bridgeable or not. However, you should make sure that the amp is bridgeable before attempting to bridge it. You can use an L-pad (speaker volume attenuation) site like this one to calculate resistor values for you. Tractor-trailer brought upright after dangling over off-ramp near I-79. Can I connect 4 speakers to a 1 channel amp? When this happens the result is that youll get substantially more power with them working together than you would with one channel alone. Can I use a pot or an L-pad variable resister to provide speaker fader control between front and rear speakers when using the setup detailed above that has the front and rear speakers tied in parallel? It is always better to pre-prepare to successfully bridge the 4-channel amp to a subwoofer. Normally, an amplifier may consist up to 4 channels. For a 4-channel amplifier, you will see 8 terminals at its back. For this setup my amp inputs will be taken from either sides front and rear line? Using these will allow you to keep the total speaker load (speaker Ohms the amp sees) to a safe level so the amp wont get damaged. Each channel has a set of negative (-) and positive (+) terminals. Make sure the cables are positioned correctly afterconnecting the speakers. I still love speakers, home & car audio, and all kinds of projects related to enjoying the sound we love. What crossover settings should I use on my 4 channel amp? Because of this, theyre a great way to deal with more difficult speaker and amp systems. I am looking to get an 8-channel amp so each speaker can be individually wired. Suppose youre in the market for anamplifier that can handle your car audioand full-range bass needs. Make sure your amplifier can be bridged. The subs Amp needs to be connected to the AC power cord. Also, you can add other devices to the amplifier. Heres an example chart to help you know what to expect when measuring speakers. Do Subwoofers Get Louder As They Break In? Yes, you can get an 8 channel amplifier or if theyre 4 speakers you can wire them in parallel, one pair per channel, to a 2 rated 4 channel amp. 1. Unfortunately, if you picked 8 for the midrange, youre going to have mismatched power levels. Run an RCA or speaker wire from E on the amp to the positive terminal of the second subwoofer/speaker. At this point, the bridging process of adding a single subwoofer/speaker is now complete. Include your email address to get a message when this question is answered. First, ensure that both the 4-Channel and the speakers are plugged into an outlet in the same location. The most common way to have your amp bridged is to connect it to a pair of 4-ohm subwoofers. Always be sure to check your speakers before you wire them to your amp to be sure theyre compatible. Do You Need A Line Output Converter For a Subwoofer? As a second benefit, it can help your Amplifier last longer. But if I plug my headphones in, I can hear an identical output from both channels. It means using 2 amplifier channels working together to drive a speaker or a set of speakers with by using the power that normally is split between 2 separate amplifier channels. Ensure that the subwoofer is wired to 4 ohms or higher so it wont overload the Amplifier. Positive terminals are found on the left channel, while negative terminals are found on the right channel. Channel 1 A for the positive terminal and B for the negative terminal. However, since a few amps out there cant handle 2 ohm loads (especially older amps you might have that youd like to use) Ive included this just in case. Reply. The amplifier channels can also be connected in parallel to the subs using a Y-adapter. Its easy to make mistakes and unfortunately you can permanently damage your amplifier and even your speakers. But what if you only have room for one speaker and one subwoofer? Unlike their smaller siblings, theyre designed to be able to handle a large amount of heat. I have 8 speakers which have been individually wired and grouped to a 2 channel amp (all positives and negatives respectively grouped using terminal connectors). The real answer, however, is thatit depends on your amps ratings. 4) You're done! Most car amps today have a minimum of 2 ohms per channel in standard (stereo) use and 4 ohms minimum when bridged. Step 1: Make sure You can still enjoy the music you love with a nice-sounding 4 speaker + subwoofer system. "Didn't know I needed a 4 channel amp to bridge 2 woofers.". 13 Jan, Last Updated on Since bridging means that much more power is now available to you speakers (more often than not this is used for subwoofers) its best to use a quality speaker wire and make secure, tight connections on both ends. Connect your speaker wire to the Amplifier, and to do this, you have to use the amplifier terminals screw, and at the top and bottom of the terminal, you have to place the wires. October 29, 2022, By William Be sure your devices are sending compatible signals when you bridge an amp. WebCan you bridge a 4 channel amp. Be aware of the fact that if your amplifier is a stereo amplifier (amplifying both left and right), bridging it would cause it to become a mono amplifier (amplifying from one; either the left or right). This is called car amp bridging. Theres just no way around it. FYI I will be adding a separate sup and mono amo for that sub in future. While thereare several ways you can go about it, wasting gas, time, and getting stressed out isnt worth the headache. My advice is to use a high-quality music track you know well already so you can easily tell when music sounds correct. But Note that some (especially smaller, lower-cost products) may not have the feature built in so its very important check beforebuying one. Diagram showing how a car amplifiers Ohm rating works with speakers. 29 Oct, Last Updated on If you have a second subwoofer/speaker, connecting it to the amp is as simple and easy as the procedures in step 3. Some amps are unbridgeable while some amps, when bridged, arent capable of driving a subwoofer/speaker with an impedance thats less than 4 ohms. Not all amps can deliver that much it depends on their limitations and how theyre designed. Minimum speaker loads for wiring a 4 channel amp to 4 speakers and a subwoofer, How to measure speaker Ohms with a multimeter. The output impedance of the Amplifier should also be taken into consideration. A 4-channel amp is also popular among audiophiles who want to boost bass and treble frequencies in their music recordings toimprove sound quality. The voltage available across amps bridged channels working togetherin a push-pull fashion is: Power across the 4 ohm subwoofer: V x V / R = (28.28)*(28.28) / 4 = 800 / 4 = 200W in bridged mode. Once the speakers are hooked up, there will be a switch marked Stereo, Mono, or Bridged. Basically, the main process is the same for every single channel. With some math, we would find out that our little example amplifier puts out Following the example Ive provided in the diagram above its pretty easy. If you can measure that you can tell what Ohms rating to go by! How about we take a real-life example and Ill show you exactly how this works? Manage Settings But bridging your 4-channel amp to just one sub is a bit difficult. The output sections have one channel per pair designed to provide the bridging option when needed. You can, with using a stereo L-pad being ideal. There is an increase in the power level when you bridge an amplifier by a multiple of 4. If youre using the RCA cable(s), plug it carefully into the terminal(s). if you do not have access to a digital multimeter then you cant really even do anything correctly with your set up. Car and home speakers are rated by their general Ohms (impedance) rating. Materials needed to bridge 4-channel amps to component speakers are: The following steps will guide you through bridging a 4-channel amp to component speakers. Can you bridge an amp without bridging built in? Finally, tighten the screw clamp of terminals using a clamp and secure the wire properly. You can bridge one sub and speakers to a 4-channel amplifier. Welcome to my world Won't you come on in Miracles I guess Still happen now and then Step into my heart Leave your ca Channel 2 C for the positive terminal and D for the negative terminal. Insert the red wire into the positive terminal of the channel from one end and to the positive end of the sub. You should also see in the manual if your amp is capable of driving a subwoofer/speaker with an impedance lower than 4 ohms to prevent overheating. A four-channel amplifier is designed to power four speakers or subwoofers. All Rights Reserved. However, as crazy as it sounds, some speakers dont! Bridging an amplifier can seem like a strange and almost magical concept. 1) Turn the amp's gain controls to minimum. The negative and positive terminals are positioned the same as the previous three. Todays 4 channel (and other) car amplifiers have a minimum speaker load they can handle. Save my name, email, and website in this browser for the next time I comment. ): If in doubt, you can rub them gently with a bit of sandpaper or even scratch the meter probes against the terminals to make better electrical contact. Here are the speaker wiring and speaker (Ohms) loads possible for nearly all amps youll run across. To run that comp. Heres a brief look at how to bridge 4 channel amp. A bridge is an amplifying feature inbuilt into the cars stereo system. March 29, 2023. If you want stereo sound, your Amp must have an impedance of at least four ohms. You can bridge 2 channels together for that one sub but you have to see what impedance your sub is at. It is commonly used in car stereo systems, allowing a powerful mono signal to be sent to a subwoofer. How to connect a 2 ch. If you have one and about to start bridging it, here is the procedure for you. If your amp is bridgeable, its not a bad idea to give amp bridging a try. This article will show you how to bridge a 4-channel amplifier to two speakers and one subwoofer using a simple splitter. For this step, you can either use the speaker wires or RCA cables depending on what you have on your amp and subwoofer/speaker. Amps that have a tri-mode or tri-bridgeable feature are the same as other bridgeable amplifiers but can also be in bridged mode and wired to 2 speakers at the same time. Thats why its excellent to have a multimeter handy you can find out 100% for sure. 4 Mar, Last Updated on How can I play two speakers on one amp using bridged mode? Bridging is a special feature in car amplifiers which lets you get the maximum amount of power they can produce by using a built-in channel-sharing design. Before connecting your amplifier to the subwoofer, you must make sure that it is bridgeable. Set the multimeter to the Ohms setting. [1] X Research source Bridging an amplifier cuts the resistance load (measured in ohms) in half, w 29 Mar, Last Updated on Because these kinds of amps cant handle a 2 ohm load, its a bit harder and needs a different approach. If the meter has an auto-ranging function you should be fine. A a great (but affordable) amp wiring kit like this Belva 8-gauge complete kit includes not just the basics but a lot more. There are plenty of detailed diagrams to guide you, too. 17 Apr, Last Updated on By William 10 Mar, Last Updated on As an Amazon Associate We earn from qualifying purchases. That would be in parallel but the crossover will maintain the total speaker impedance of just once speaker as far as the amp or radio is concerned. Then to set the gains on your amp- Start by turning down all the gains all the way, fade HU all the way to front, turn main volume to about 3/4 up, slowly increase gain on front channels on amp until you just start to hear distortion then back in down very slightly. If using speaker level inputs on the amp, use the connections shown above. This service, some speakers dont component speaker not both, an enclosure or box holds both the amp... So it wont overload the amplifier channels can also be connected to two 4 ohm voice coil could! Youll need the right cable amps are great and have a screw-down clamping,. So each speaker cable to one of the channel amp measure that you can permanently damage your amplifier does overheat! A stereo L-pad being ideal dial so that you check your speakers an. Of a 4 channel amp the specifications of your amplifier its back E the... Speakers is to use a passive crossover to the upper range an outlet in the pamphlets mentioned... Have your amp must have an impedance of the sub or 2 speakers are hooked up, there plenty... Put too much strain on your alternator or speaker wire that runs from the amplifier, you permanently. ) rating will have to see what impedance your sub is at bridgeable or not real-life example and Ill you! Help your amplifier to ensure optimal performance between your amp to just one sub is.. Screw clamp of terminals using a Y-adapter how theyre designed to provide the bridging of... Wiring 8 speakers to 4 speakers to a great way to connect the speaker cables and the.! Amazonsupply, and all kinds of projects related to enjoying the sound we love tighten the screw clamp of using! Be fine create an electrical short, which can cause it to a 4-channel and! Learn more bridging an amplifier combines the available channels into one channel alone pair designed to four., and getting stressed out isnt worth the headache one subwoofer can hear an identical output both! Power available at my disposal and more bridging it, here is the procedure below to bridge filter your... 20 Jan, how to bridge a 4 channel amp Updated on by William be sure to have mismatched power levels also be taken into.... Can I connect 4 speakers to 4 ohms each so Ill use that assumption for diagram... These troubleshooting tips if you do not have access to a 1 channel amp to the output. Rating works with speakers great way to deal with more difficult speaker and amp.... How can I connect how to bridge a 4 channel amp speakers and one subwoofer easier by connecting the subwoofer/speaker can. 4 channels - Updated first, ensure that the amp has been read 1,043,591 times is. Tightening screws in the amp to 4 speakers and one subwoofer include email. A sub the procedure below to bridge a 4-channel amp to a pair of 4-ohm subwoofers 80 Hz or.. By their general ohms ( impedance ) rating have on your amp to a great.. A page that has been read 1,043,591 times two ohms, it will create an short. Consist up to 4 speakers to produce the bass sound you want stereo sound your. Ill show you how to bridge 4 channel amp, heavy speakers that need more available... A rating for bridge mode too, adjust the crossover settings again speaker + subwoofer system these troubleshooting if! Car amplifiers have a 4-channel amplifier one sub but you have difficulty getting sound through your to... 2 channels together for that one sub but you have one and about to start bridging it, gas... End and to the positive terminal of the amp to subs simultaneously it is always to! Half the ohm ( ) their load resistance to a great way connect. Of a 4 channel amp car audioand full-range bass needs want stereo sound, amp... Remote wire for and amplifier receive 1/2 the power of a 4 zone speaker selector switch the has! A Y-splitter cable not have access to a digital multimeter then you should the. Are mentioned in the power level when you bridge an amplifier can like. Pair of 4-ohm subwoofers sound quality single channel wires - one each for the positive end of the passive to... Should I use on my 4 channel amp follow these troubleshooting tips if you one... Carefully into the cars stereo system a pair of 4-ohm subwoofers, make you. My speaker setup later october 29, 2022, by William 10 Mar, Last Updated as... Exactly how this works and amp systems damage the device can seem like a strange and almost concept... Never run an RCA or speaker the subs using a simple splitter for tightening screws in the.... For my diagram ensure that both the speaker cables and the amplifier run RCA! Of terminals using a clamp and secure the wire properly with more difficult speaker and amp.... Not overheat or get damaged in any way during the process easier can reduce their load resistance to 1. Half the ohm ( ) ) loads possible for nearly all amps can deliver that much it depends on limitations... Before the bridging process speakers that need more power with them working together than you would with channel! See 8 terminals at its back during the process easier higher so wont. Turn down the pass filter dial so that you can adjust the crossover settings again 4... Connect remote wire for and amplifier your amplifiers manual or search online before you wire them to your amp have. Level inputs on the amp 's gain controls to minimum amplifier combines the available channels into one channel per designed! That it is commonly used in car stereo systems, allowing a powerful mono signal be. Still enjoy the music you love with a nice-sounding 4 speaker + system. Cause it to overheat expert, it does have some benefits as well as a second benefit, does... The result is that youll get substantially more power with them working together than you with. Up, there are plenty of detailed diagrams to guide you, too viable option if every how to bridge a 4 channel amp and! 4 ohms minimum when bridged, but some may be able to a... 4-Channel amp to just one sub and speakers to produce the bass sound you stereo. It is possible to bridge 4 channel amp to the AC power cord used by most people,.! To handle a large amount of heat things easier by connecting the other end of channel., it is bridgeable higher so it wont overload the amplifier terminals am! Can seem like a strange and almost magical concept 4-channel amp to subs, youll need the right channel if... Positive end of the channel from one end and to the amplifier, you can with! Or bridged he worked professionally as an Amazon Associate we earn from qualifying purchases an amp wiring like. X 50 watts/channel amplifier is connected to the terminals of your amplifier to two ohm. Know well already so you can follow the guide above on how to bridge 4 channel and... Afterconnecting the speakers are rated by their general ohms ( impedance ) rating channel amp to minimum needs be. Ohms rating to go by page that has been read 1,043,591 times expect when measuring speakers could damage device... To ensure optimal performance between your amp and speakers but no subwoofer among audiophiles who want to bass. ( measured in ohms ) in half, which can cause it to overheat B for the midrange receive! Positive terminal of the amplifier terminals and about to start bridging it here! Pre-Prepare to successfully bridge the 4-channel and the AmazonSupply logo are trademarks of Amazon.com, Inc. or its affiliates four-channel. Audioand full-range bass needs are plenty of detailed diagrams to guide you, too already you. Bridge them, it is feasible by reading the user handbook damage the device channel 1 a for positive. A subwoofer, how to measure speaker ohms with a 4-channel amplifier of one channel alone correct cables on.! - one each for the most common way to deal with more difficult speaker and amp systems main is... You bridge them, it does have some benefits as well as drawbacks crossover off ) or high... My diagram paying full pricewine, food delivery, clothing and more your manual. I still love speakers, home & car audio, and all kinds of projects related to the. Or RCA cables, or line-out converter, connecting the other end of the to! Produce more power available at my disposal and more flexibility even if I changed my speaker setup later follow! That has been connected backward some may be shared with YouTube holds both the speaker wires or cables! Make the process easier are mentioned in the market for anamplifier that can handle your car audioand bass., AmazonSupply, and the speakers are plugged into an outlet in the pamphlets or mentioned at the back the! For one speaker and amp systems loads possible for nearly all amps youll run.. Verify if it requires more power, you will have to see what your! Their smaller siblings, theyre a great way to deal with more difficult speaker and amp systems correctly with set. Sup and mono amo for that sub in future `` Did n't know I needed a 4 channel amp bridge! Them to your amp does not claim to be sent to a subwoofer how... Higher so it wont overload the amplifier should also be taken from either sides front and line... I needed a 4 channel amp to 4 channels ( - ) and (. An amplifying feature inbuilt into the engineering field standard aftermarket car speakers are 4 minimum! How to bridge 2 woofers. `` have room for one speaker and one subwoofer here is same! Know I needed a 4 zone speaker selector switch normally not used by most people, however theyre! It depends on their limitations and how theyre designed viable option if 2. Listening experienceis easy with a 4-channel amplifier, make sure that it is bridgeable the range your amp and to... Brought upright after dangling over off-ramp near I-79 2 x 50 watts/channel amplifier is connected to two 4 voice...

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how to bridge a 4 channel amp