Question about Audio Players & Recorders

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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- 2400W Max, High-Current Monoblock Car Amplifier
- RMS Power Rating:
- 300 watts x 1 chan. @ 4 ohms
- 600 watts x 1 chan. @ 2 ohms
- 1200 watts x 1 chan. @ 1 ohm

- Max Power Output: 2400 watts @ 1 ohm

Dec 18, 2014 | Car Audio & Video

A1300HCT Max Watts:

- 2400W Max, High-Current Monoblock Car Amplifier
- RMS Power Rating:
- 300 watts x 1 chan. @ 4 ohms
- 600 watts x 1 chan. @ 2 ohms
- 1200 watts x 1 chan. @ 1 ohm

- Max Power Output: 2400 watts @ 1 ohm

Dec 18, 2014 | Car Audio & Video

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.

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.

Jun 07, 2011 | Car Audio & Video

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.

Feb 27, 2011 | Diamond Audio D5-600.4 Car Audio Amplifier

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).

Bottom line, know your RMS numbers, not Peak.

Byron

www.distinctbeat.com

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).

Bottom line, know your RMS numbers, not Peak.

Byron

www.distinctbeat.com

Dec 06, 2009 | Sony Car Audio & Video

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,

Gilshultz

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,

Gilshultz

Dec 01, 2009 | Pioneer Car Audio & Video

Here are some specs:

4800W Max, High-Current 2-Channel Car Amplifier
RMS Power Rating:
Max Power Output: 4800 watts @ 1 ohm
this is the web site I got the specs from
http://www.sonicelectronix.com/item_61_Audiobahn+A2300HCT.html
Hope this Helps...

- 300 watts x 2 chan. @ 4 ohms
- 600 watts x 2 chan. @ 2 ohms
- 1200 watts x 2 chan. @ 1 ohm
- Bridged:
- 600 watts x 1 chan. @ 4 ohms
- 1200 watts x 1 chan. @ 2 ohms
- 2400 watts x 1 chan. @ 1 ohm

Jul 22, 2009 | AudioBahn A2300HCT Car Audio Amplifier

fuses wont restrict the current flow the amp is way too much for that sub. it may not have damaged that sub yet but it will. you might only need a 100 watts rms too run it.but you will need sowe where about 2000 watt sub too run off that amp

Dec 28, 2008 | Pioneer TS-SWX310 Car Subwoofer

Yes it should be safe to use a 13 amp fuse.

The convention with fuses is up to 720 watts a 3 amp fuse should be used and above 720 watts a 13 amp fuse should be used.

To be precise you need to know the exact wattage of the kettle.

Sometimes maufacturers will fit 5 amp fuses but these are only good for a power rating of 1200 watts maximum (at 240 volts).

So as your kettle is rated at more than 1200 watts it needs a 13 amp fuse.

Hope this is a FixYa.

The convention with fuses is up to 720 watts a 3 amp fuse should be used and above 720 watts a 13 amp fuse should be used.

To be precise you need to know the exact wattage of the kettle.

Sometimes maufacturers will fit 5 amp fuses but these are only good for a power rating of 1200 watts maximum (at 240 volts).

So as your kettle is rated at more than 1200 watts it needs a 13 amp fuse.

Hope this is a FixYa.

Oct 20, 2008 | Breville SK85XL Nova Cordless Electric...

400 watts delivered to 300 watt speakers the only way to do this would be to wire two subwoofers in series so that the power needed to drive them will be 600 watts to max, however this will increase your impedance on the speaker (8 ohms) load so what you can do to compensate is get an 8 ohm 600 watt resistor and put it in parallel with the speakers you will then have 4 ohms of impedance at a total capacity of 600 watts of power
In other words the amplifier won't blow these out now.

Oct 08, 2007 | Pioneer GM-X722 Car Audio Amplifier

Jan 21, 2021 | Yamaha CDX-396 CD Player

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