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New member Username: Minderaser66Milford, Connecticut United States Post Number: 1 Registered: Jul-11 | Hey all, First of all let me start by letting you guys know I've been installing car audio for many years. A long time ago I had a friend who worked at an installation co. and he taught me how to get it done. I am not a pro by any means but I can def. get the job done neatly and correctly. I've prob done about 10 full systems in my own rides and quite a few for my friends. Also numerous single item installs, i.e. head units, amps, speakers and so on.. The only thing I never really dealt a lot with were mono amps. I know you can run more than one speaker from a mono but I've never really had much interest in them. I stopped at a tag sale the other day to check out an outboard motor and spotted this Fosgate p3001 amp. The guy was about 60 yrs. old and i don't think he even knew what it was. So for 5 bucks I walked away with it, hoping it would work. Well, it works, actually it is quite powerful for a mono 300w rms amp. My question is - Why would a mono amp have two inputs marked left and right and two sets of speaker wire inputs marked a and b ? Like I said, mono amps are not my specialty so any remarks to enlighten me would be helpful. I've never owned a mono. The only difference between the p3001 and my p5002 is the speaker outputs say left and right while the 3001 says a and b.. Sorry for rambling. Thanks, Steve |
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Bronze Member Username: Joe1234Post Number: 88 Registered: May-09 | http://www.rockfordfosgate.com/rftech/library/2004/3_Amplifiers/MAN5274B_RF_Punc hMono-MAN.pdf |
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Gold Member Username: KaerfplSpencerport, NY USA Post Number: 1184 Registered: Jun-06 | The A & B terminals is there for you to wire a Subwoofer in each one. Let me explain: Lets say you have two Subwoofers. They are each SVC 4 Ohm Subwoofers with 150 Watts RMS. You can wire Subwoofer #1 into terminal A and Subwoofer #2 into terminal B. As long as the connections are in Parallel (positive to positive and negative to negative), you will be creating a 2 Ohm load, which will put out 300 Watts RMS. Here is a picture on how to wire each subwoofer to it's own terminal: http://images.the12volt.com/12voltimages/1_4ohm_svc_4ohm.gif If you didn't want to do this, you can also wire the Subwoofers into a Parallel connection, and then use the negative terminal for A and the positive terminal for B, which will also create the 2 Ohm load as well. Below is a picture of the example of the Subwoofer wiring: http://images.the12volt.com/12voltimages/2_4ohm_svc_2ohm.gif For another example, lets say you have one DVC 4 Ohm Subwoofer with 300 Watts RMS. As long as the Subwoofer is wired in Parallel, you can use the same method like above, using the negative from terminal A and positive from terminal B to create the 2 Ohm load. Below once again is another picture for the Subwoofer wiring: http://images.the12volt.com/12voltimages/1_4ohm_dvc_2ohm.gif |
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Bronze Member Username: Joe1234Post Number: 89 Registered: May-09 | And as for the inputs, the right and left channels get mixed into a mono signal, so the subwoofer(s) play all bass the stereo signal carries. |
