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Pioneer 12v car amp rated at 1200 watts max requires ? amp fuse

Pioneer 12v car amp rated at 1200 watts max output has two 25 amp fuses - what amperage circuit breaker should be used if located 2 feet before pioneer amplifier and 2 feet after the 12 v battery? Probably 8 gauge wiring will be used.

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Hi I would suggest 40A (i know guys will disagree) but you shouldnt be running at full 50A. Fuse are often rate at 50% - 75% of the actual consumption. By the way, 8 guage @40A will give you about a 2% drop at 5 feet. Maybe consider heavier for 40A?? Just a suggestion

Posted on Jul 25, 2009

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4 gauge minimum - period. 8 gauge is good for a single 15 amp and thats all I would trust. I've got 20 plus years experience. There is no such thing as overkill. I call it "A safety margin" I use 8 gauge for speaker wire. Also use a breaker rated for total of all fuse max draws. If 3-40 A fuses, then a 120 A breaker. Again, safety first. The breaker is there to provide short circuit protection only, you dont want it to limit the current available.

Posted on Jul 31, 2009

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How many Watts is the A1300HCQ AUDIOBAHN amplifier


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I have a audition 150 watts x 2ch bridgeable high power amp serial # 00400274 need size of inline fuse. does not show size of fuse on diagram


hi.

if it is 150 watts TOTAL power then you should use a 15 amp fuse.
(150w / 12v = 12.5amps, 15amp fuse should provide the correct protection.)

if the system is 150 watts PER CHANNEL. then it will be 300 watts total and a 30 amp fuse should be used.
(300w / 12v = 25 amps. 30amp fuse should be used.)

30 amp is normally the highest fuse recommended for an car audio system, so i would not use higher than this without taking the unit to a qualified auto electrician, to get the system checked for safety. if you have any further questions please feel free to ask.

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Just bought 2 12 in d3 dual 2 ohm subs with d5 600.4 amp. Need to know how to wire subs. They were in a box already I assumed they were wire at 2 o When i hooked One up to my amp it hit really for Jus...


what wattage are the subs and amp? if your subs are more wattage than your amp, your amp will blow fuses as cant handle the output to your subs. for example. you have 2 500 watt subs and a 300 watt amp, that is no good as amp isnt powerful enough. if you have 2 500 watt subs you need at least a 1200 watt amp to power them both. 200 watt more than the combined wattage of subs as amps should never be turned up to max as they tend to blow and overheat more quickly. 80% volume on amps is reccomended by installers and manufactures.

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Pump the brakes!
You need to know the RMS power rating of the sub you are powering.
Dont exceed the RMS power rating of the sub by more than 25%.
If you see a peak power rating on either the sub or the amp, ignor it, means nothing. Always compare RMS ratings.
Example: a Sony 12" Xplod sub, boasting 1200 watts, will only handle, 350 watts RMS, so the amp you choose to power the sub should be 350 watts RMS as well, and should not exceed more than 25% of the RMS power handling (487.5 watts).
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How do i know what size power wire to use in my car for my new radio i plan to hook up two 1200 watt amps an equalizer and a 15 in subwoofer to a 2007 chevy cobalt


Put a generator in the trunk. I am assuming this is RMS watts. This will require modification to the vehicle's electrical system. Lets look at what you are saying. You are going to use two 1200 watt amplifiers, for a total of 2400 RMS watts.

Using a simple rule of thumb based on ohm's law and assuming a little over 80% efficiency in the amps (I doubt it) you divide the total watts by 10 (the cars 12 volts – a fuge), that leaves you a value of 240 or 240 amps required to power the amps at 12 volts DC.

Now consider 20 feet of wire to the battery or forty feet of wire round trip, one for positive and one for negative. a #2 AGW wire, about the size of your finger, will give you a 1.8 volt drop or 7% voltage drop in the wire. Assuming the alternator is maintaining 13.8 (standard charging voltage) that leaves you exactly 12V at the amplifier. This sounds great but the larger alternators only put out about 100 amps so you need 2.4 alternators to supply the current the amps will need. Lets assume a standard car battery is rated at 50 amp hours, that indicates that the battery can supply about 12 minutes of power at full output. Now calculate the rest of the power requirements of the vehicle and what you are short in alternator capacity the battery makes up. I would guess you vehicle battery would be dead in less then ½ hour or you need to keep the volume way down. That indicates a much smaller amp would be a much more cost effective solution.
Good Luck,
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  • this is the web site I got the specs from
  • http://www.sonicelectronix.com/item_61_Audiobahn+A2300HCT.html
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