My JL Audio G4500 is a 4 x 80W 4-channel amp. even if you bridge 2 channels (which provides 150W rms at 2 ohms!) KISS at work. Watch Brendan answer two questions about 2 channel car amplifiers. There is nothing you can do to that amp to get it to put out 300W at 4 ohms. This means that the speaker will allow for more current to run from your amp to your speaker(s) for a louder sound. To bridge, begin by connecting the amplifier to the speaker. In fact, buying a 4 channel amp and bridging it onto your front speakers is a very economical way of getting the power in a small chassis. The output of the amp is 50W RMS X 4 at 4ohms. theres nothing wrong with the amp that you allready have you just have to make sure its set up correctly you need to wire the amp so the front channels see a bridged 4 ohm load you need to wire the amp so the rear channels see a bridged 4 ohm load set the low pass filter to around 50-60hz and leave the bass bosst feature off completely Channel 1 will be labeled A for positive and B for negative while channel 2 will be labeled C for positive and D for negative. With my 18 Watt TMB style amp. Each channel has it's own tone controls so this adds more control and more options. Feb 17, 2014 - Bridging a four-channel car audio amplifier will effectively double your amp's output (watts) so that you can drive more power to your speakers or subwoofers. A very first look at a circuit representation may be confusing, yet if you can read a subway map, you could review schematics. Bridge it and run the two 4 ohm speakers in SERIES that will be 8 ohms. Thus in effect doubling the power each channel, say you amp was 200 watts. If you have a two-channel amplifier in your carâs system, you should be able to see 4 terminals; two positives and two negatives. the amp is still seeing a 4 ohm subwoofer and is only going to provide 75W to the sub. It gives out 25x4 at 4 ohms. Example. The DB1001s shall be on the front dash, the DB691s in the front doors and the DB651s in the rear doors. but when bridged gives out 100x2 rms at 4 ohms. Bridging a four channel amplifier is no different than bridging a two channel amp. This offers twice the voltage and increases your power output. ... You could with a 4 channel amp. Not complicated. Bridging 4 Channel amp into 1 04-16-2007, 12:44 AM I've got this old 4 channel amp I've had since I was 16 and I'm wondering if it would be a good idea to bridge the amp to one channel. I have just picked up a pair of DB691s, a pair of DB651s and a pair of DB1001 tweeters which I plan to hook up to a Alpine MRX-F30 4 channel amp. If that Amp. If not, look for some indication next to the speaker terminals on the amp. On this amp I like to run on channel hot and loose with the treble on 1 and the normal channel a little cleaner with the tone as on 7 or 8 (trebley). This has really been bugging me a lot because I can't really find a straight forward answer! I also purchased a JL brand 4 channel amp at 100 watts per channel. So when connecting up your left channel you would connect one wire to the front + and the other to the rear -. To produce maximum power into a single 4 ohm speaker (without increasing the rail voltage) you could simply invert the signal of one channel and bridge the speaker on the amplifier. The main amp we use is rated at 200 watts per channel at 8 ohms, 400 watts per channel at 4 ohms, and 400 watts per channel at 4 ohms mono bridged. I do exactly that in my pickup - power a pair of separates in the front with 2 of the channels and bridge the other two to power a sub. Therefore, each channel puts out twice as much power, and the combined output is quadruple a single channel at 4 ohms. you not using channel 3 - 4 its now a 2 channel amp bridged, your only plugging the rca's into channel 1-2 there r no back speakers or channels 3-4 Create an account or login to comment You must be a member in order to leave a comment Either case though, hopefully that'll get you in the right direction. I plan on bridging it to run a pair of polk components rated at 100 rms. Fader controls, will simply allow the user to direct the music from either the rear or the front or all four. 4 channel amplifiers 4 channel amplifiers have four amplifiers or "channels" in one package. Hi all. Most car audio systems will have fader controls located on them. If you want more power, get a bigger amp. Two amplifiers, each rated 100 watts maximum for an impedance of 4 Î© (four Ohms); in bridge mode they will appear as a mono amp, rated 200 watts into 8 Ohms.This is the most commonly misunderstood mode of operation and it requires additional circuitry to implement if the pair of amplifiers does not have the facility built in. Right now your seeing ~80 watts each speaker. In 4 channel mode 50 watts per speaker in 2 channel mode 100 watts per speaker If it can be bridged to a 2 channel mode the instructions will say so. Repeat the process to attach the left speaker wires to the left channel output connectors. As said, it's best to do some research - googling around for your specific amp, and see if the manufacturer specifies if and how to do it. It goes like this: When you bridge the amp, each channel is "seeing" half the load presented to the amp. How to Bridge a 2 Channel Amp. is suitable, should I wire it up as each front 6-1/2" speaker to channel-A, each rear speaker to channel-B and the 5th (sub.) How to Bridge your Amplifier. Do NOT run them in parallel, That will be a 2 ohm load and that will be bye-bye amp It's relatively easy to bridge a four-channel amp as long as you have a very basic knowledge of car audio wiring and how to connect an amp â¦ If using 4-channel mode, do this... HU front-left preout should be connected to RCA Y-splitter into amp ch 1 & ch 2 HU front-right preout to another RCA Y-splitter then into amp ch 3 & 4 Bridge output of channels 1 & 2 to the front-left speaker Bridge the output of channels 3 & 4 to the front-right speaker Balance should work perfectly. 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). I was wondering if I could run just the tweeters using 2 channels, and the front woofers using the other channels. This allows complete control of all four speakers, with fading capabilities. Theoretically, the output should be 4 times the power of a single channel on the amp. Here is a picture gallery about how to wire a 5 channel amp diagram complete with the description of the image, please find the image you need. Read the user's guide or do your research. With this method, you can increase the ampâs per-channel power output. Sometimes, there will be lines connecting the two terminals you should use to bridge the amp, as shown on the right. or should I run it UN-bridged with two seperate sets of wires from the Amp's sub channel with one of each going to only one of the voice-coils on the sub? Power on the amp and stereo and play a track through the CD-player or head unit and have a listen to your new high-powered speaker setup. In fact, I would prefer that setup to a 2 amp setup. You can either wire those 2 subs to 2 or 8 ohms. To top it off I sometimes us an aby switch to link the channels. a 4 ohm sub is going to be 4 ohm, no matter what you do to the amp. channel on the Amp. Remember bridging requires higher impedence speakers. So, if you bridge an amp to 4 ohms, each channel "sees" 2 ohms. Bridging a two channel amp refers to combining the two channels into one. The last option, and this one will depend entirely on the features provided on your stereo amp, is to bridge the two channels to a single mono channel. A 4 channel amp should work just fine for what you are trying to do. Before attempting to bridge your four channel amplifier, make sure, it's bridgeable. What happens when you bridge an amp? Bridged it is 250x2 @ 4ohms When bridging it to power two 4-ohm 6W3v3 subwoofers, is it necessary to use Y-Adapter Cables to fit all 4 â¦ Hi! If you bridge it you can run 2 speakers at ~ 100 each Your better off leaving it the way it is. Your amp's manual should explain how your inputs are affected once the amp is bridged. I want to know how to go about it and would our local installers be able to bridge it with ease or is it a complicated process? This is why some of the older amplifiers used a 'bridging module' (it inverted the signal going to one channel). bridged to the sub? The 4 channel on your mids and highs. With Kenwood, there would be a switch to bridge it to 2 channel. A mono amp is better suited for using to power subs then a full range amplifier. You don't have to use both channels (you probably don't have to bridge both either if you want to use the spare channel to amplify your two back speakers at 75 watts each) So you have 4 speakers, and a 4 channel amp. i just bought a kicker DX200.4 amp. The best you can do is 150 watts to the speaker out of a bridged 4 to 2 channel setup. 6 speakers 4 channel amp wiring diagram â A Beginner s Guide to Circuit Diagrams. go â¦ If you bridge an amp, you are using 2 channels to make 1. This is mainly done for subwoofers, as it changes it from stereo to mono and doubles the power. Obviously, you canât bridge a monoblock amp. Most 2 channel amps are only 4 ohm stable when bridged same for 4 channel amps as well. There's no reason you can't maintain a left and right channel as long as you utilize the amp's inputs correctly. I am planning on running only the front speakers without using rears. When you bridge a 4 channel amp, it becomes 2 channels, as you already know. If you have a pair of 4 ohm speakers run each one on a channel. On your four-channel amp, you should see 8 terminals: channels 1 through 4 each have a positive (+) and negative (-) terminal. The only stereo I did install using amps had a 4 channel running all the cabin speakers (Front + Rear), and a 2nd amp dedicated to the sub. Output Details 50 Wattx4@ 4 Ohm 12V DC 70 Wattx4@ 2 Ohm 12V DC 140 Wattx2@ 4 Ohm 12V DC 80 Wattx4@ 4 Ohm 14.4V DC A 4 channel amp will be able to run one (or two) subs using two channels (one bridged* sub or two subs) and two speakers running one channel each. Most people bridge a 2 channel amp to connect the two channels to supply power to one sub. Description: 5 Channel Amp/high Level Input â Page 2 â Ford F150 Forum with How To Wire A 5 Channel Amp Diagram, image size 700 X 604 px, and to view image details please click the image.. Channels to supply power to one channel ) though, hopefully that 'll get you in right. Doubles the power channels into one mainly done for subwoofers, as shown on the right, matter. 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