Is it possible to bridge 4 channels to 1?
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New member Username: Pyr0sOz Post Number: 3 Registered: Nov-04 | I have a Kicker C15A 15" 250W rms competition sub (4 ohm i think) running off a phillips dap 650 amplifier. it's approximately 75W rms x4 channels. At the moment channel 1 and 2 are bridged to run the sub,which i believe isn't quite being pushed properly because it starts distorting when you turn it up (since it's only getting 150 instead of 250W rms). I have all my amp settings and head deck settings and crossover settings etc. correct, just not enough power to push the sub properly. Is it at all possible to bridge 4 channels to 1 single channel to run the sub off 300W rms? If so how can i do it safely without damaging my equipment. and can ANYONE find a frickin manual for the Philips DAP 650??? I have looked all over the net!!! Apparently they were designed in Germany and made in Japan and are the same as some alpine black amps or something, just rebadged. |
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Bronze Member Username: Virus5877West Lafayette, Indiana USA Post Number: 54 Registered: Apr-05 | a 4 ohm sub is going to be 4 ohm, no matter what you do to the amp. even if you bridge 2 channels (which provides 150W rms at 2 ohms!) the amp is still seeing a 4 ohm subwoofer and is only going to provide 75W to the sub. There is nothing you can do to that amp to get it to put out 300W at 4 ohms. besides, get rid of that phillips and get something with some real balls. hell, even get a kicker class D sub amp and you'll be more than happy. Check out the 400.1. It should power your C15A quite nicely! |
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Gold Member Username: FishyTamarac Ft.Laud, FL USA Post Number: 1175 Registered: Sep-04 | I really don't understand what Cyrus is saying. If the amp is rated 4x75 at 4 ohms, has a regulated power supply, and is stable to 2 ohms stereo(4 ohms bridged) then it should provide around 300 watts with two channels bridged into 4 ohms. Apparently that sub comes in either dual 2 or 4 ohm configurations. http://www.kicker.com/05/05kicker.html Which model do you have and how do you have it wired? It may be wired in a such a way that it is presenting less than a 4 ohm bridged load. Most 4 channel amps aren't stable bridged to anything less than 4 ohms which could explain why it sounds so bad. -Fishy |
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Gold Member Username: CarguyPost Number: 2842 Registered: Nov-04 | Fishy, you forgot about his question. He wanted to bridge 4 channel amp into 1 channel. It is not possible. 4 will become 2, and 2 channel can become 1. |
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Gold Member Username: FishyTamarac Ft.Laud, FL USA Post Number: 1179 Registered: Sep-04 | nah, I just kind of ignored it.  If he's looking for 300 watts he should be able to get that with just half the amp. I looked all over for specs on that amp as well. There ain't none. -Fishy |
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Bronze Member Username: G3nocd3San Jose, Ca USA Post Number: 25 Registered: May-05 | NO, IT IT NOT POSSIBLE, TRYING IT EILL BLOW FUSES AND OR FRY AMP |
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Bronze Member Username: MixneffectOrangevale, Ca. USA Post Number: 85 Registered: Apr-05 | People, If you have to ask such questions because you are not sure, then why don't you just pay a professional to do the job in the first place. Or here is another idea, read a book about audio science. Asking questions like this leads me to believe that you should not get involved in the first place. I can understand having an inquiring mind, but when you cross the line it should be dealt with. Go ahead dude and start reading, you will appreciate what you have. |
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Bronze Member Username: ShadylimitedxPgh, Pa Usa Post Number: 45 Registered: Apr-05 | not a 4 channel but a 2 channel u can |
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Bronze Member Username: G3nocd3San Jose, Ca USA Post Number: 73 Registered: May-05 | I see Someone blowing fuses in the future : / |
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Bronze Member Username: ZacdavisBeloit, Wi Post Number: 63 Registered: Dec-03 | The new MTX 4 channel amps can be brigded to 1 channel, I know, sounds crazy but true. |
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nick_sq Unregistered guest | Oh it can be done. You need to put the amp in a fireplace and all channels will melt to one. Actually, on a lighter note, i had a 4 channel amp powering an orion HCCA 12 DVC...It had dual 4 ohm voice coils and i bridged 4 channels to 2 channels and ran each channel to its own voice coil. Amp did 75x4 RMS (rockford) so i got a total of at least 300 RMS to that sub. Worked out ok just make sure your left and right channels are getting the EXACT same imput signal. |
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