Can You Bridge a Car Stereo Head Unit For More Power To The Speakers?
Technically speaking yes it is possible, you can bridge the 4 outputs on your stereo to 2 channels because afterall it contains an internal amplifier. Now doing so may result in more power output in the short term, but long term you could cause possible damage and fry the circuit inside. Although this mainly happens because of heat issues, which can be easily overcome with a attached computer cooling fan to prevent overheating onto the rear heat sink were that mosfet transistors are mounted. With taking extra cooling methods into your consideration, its very unlike that you are going to run into problems. However, if its boiling hot outside during summer weathers bridging your car stereo could lead into overheating problems and it might shut down randonly during music playback placing itself into protection mode. Most cheap headunits are not bridgeable, but particular Kenwood and Pioneer ones are fully capable of it due to containing a high quality amp from the factory that has time and investment put into it and not cheaply made like other knock off brands.
When car audio users want to bridge the rear channels on their car stereo its mainly because they want to add a subwoofer to the rear channels and keep the front for vocals or treble. This is a very good idea and even we recommend it if you don't want to install a car amplifier into your vehicle, but you just have to take cooling methods into your concern to keep everything running nice and cool. So yes go ahead will full confidence because bridging a car stereo is possible. But also to point out directly that this may increase the distortion and clipping levels to be reached more quicker at higher volume levels sooner. This is because the amplifier inside the car CD player is trying its absolute best to push out them extra watts under a lot of electrical stress. If you want to know how to bridge a car stereo for more power you might find theses instructions useful to give you an idea of what you need to do exactly.
1) First of all you will need access to the back wiring harness plug that goes into the back of the car radio. So using din tools or a flat heat screwdriver remove it from the single or double din slot in the dashboard.
2) Now that you have clear access look for the rear speakers wires. These are green and grey coloured on most aftermarket car stereos. Once you have found them, you will need to disconnect the existing wires from both pairs of rear channel output wires.
3) Right so you are ready to bridge over the channels. Think of it like this, a bridge is provided above most rivers to allow you to get across from one place to another, it is kind of the same scenario for car audio. So connect speaker wire onto one side of the left rear speaker onto the negative wire, the one with green with the black stripe and connect the other end of the speaker wire the positive side onto the plain gray wire. You can now bridged both rear channels on your car stereo amplifier.
4) All you need to do now is connect the required speaker to the bridged channel, wiring it how you normally would following correct polarity and attaching the wires onto the terminals of the driver.
3) Right so you are ready to bridge over the channels. Think of it like this, a bridge is provided above most rivers to allow you to get across from one place to another, it is kind of the same scenario for car audio. So connect speaker wire onto one side of the left rear speaker onto the negative wire, the one with green with the black stripe and connect the other end of the speaker wire the positive side onto the plain gray wire. You can now bridged both rear channels on your car stereo amplifier.
4) All you need to do now is connect the required speaker to the bridged channel, wiring it how you normally would following correct polarity and attaching the wires onto the terminals of the driver.
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