Forum Discussion
- rk911Explorer
Rynofire wrote:
I cannot for the life of me figure out all this amp stuff. I need to know how many amps this stereo amplifier uses per hour so I can figure out how much solar I need to recharge batteries. It only runs the 2 outside speakers from the battery. It is a Sony Xplod 600 watt amp. 4 channel.
it 's called Ohm's Law. amps can be calculated if you know the voltage and watts. The formula for Amps is Watts divided by Volts. in your case 600/115=5.2. there are many online calculators for Ohm's Law. - GdetrailerExplorer III
rk911 wrote:
Rynofire wrote:
I cannot for the life of me figure out all this amp stuff. I need to know how many amps this stereo amplifier uses per hour so I can figure out how much solar I need to recharge batteries. It only runs the 2 outside speakers from the battery. It is a Sony Xplod 600 watt amp. 4 channel.
it 's called Ohm's Law. amps can be calculated if you know the voltage and watts. The formula for Amps is Watts divided by Volts. in your case 600/115=5.2. there are many online calculators for Ohm's Law.
Well, that doesn't really work well with AUDIO stuff unless your are planning to BLAST it at FULL OUTPUT. Not to mention you are assuming 115V AC, Sony Explode is a CAR AMP and will be running from 12V DC..
600W at 12V is 50A but that would be FULL VOLUME.
While that amp may be rated at 600W, in reality you will not ever be using 600W of power. Just ten watts per channel in a 10x20 room will create more than enough volume to cause your ears to ring and after an hr some hearing loss.
Most likely you will only be using MILLIWATTs of power per channel, it does not take a lot of power to get the sound level to a point that you are hearing it at say ten feet unless you are planning on concert sound levels.
What you really need is what the amp draws at NO SIGNAL level, that most likely will be what draws more power in most cases.
Personally, I would skip the 600W amp and use whatever the stereo unit can provide which will be 10W-20W per channel which through most junky RV outside speakers should be more than enough to make the speakers crack. 600W will simply turn those speakers into smoke. - grizzzmanExplorer
rk911 wrote:
Rynofire wrote:
I cannot for the life of me figure out all this amp stuff. I need to know how many amps this stereo amplifier uses per hour so I can figure out how much solar I need to recharge batteries. It only runs the 2 outside speakers from the battery. It is a Sony Xplod 600 watt amp. 4 channel.
it 's called Ohm's Law. amps can be calculated if you know the voltage and watts. The formula for Amps is Watts divided by Volts. in your case 600/115=5.2. there are many online calculators for Ohm's Law.
well "off the batteries" you would be looking more like 48 amps assuming the two speakers could take 600 watts. As it is four channel it is cut in 1/2 assuming it wasn't bridged. There are to many unknowns to get it. An amps probe would answer your question. Of course the simple answer is 600 watts is 600 watts no matter the voltage :R - RynofireExplorerHey guys, I know nothing about car stereos and amps. I just bought a pop up and it has 2 inside and 2 outside speakers and the 600 watt amp only runs the outside speakers. That's all I know. Not gonna throw a rave with them, just sit outside by the fire and listen to country music.
- grizzzmanExplorer
Rynofire wrote:
Hey guys, I know nothing about car stereos and amps. I just bought a pop up and it has 2 inside and 2 outside speakers and the 600 watt amp only runs the outside speakers. That's all I know. Not gonna throw a rave with them, just sit outside by the fire and listen to country music.
well lacking info I would say 200 watts or so would get the job done. what's the amp hours on your batteries? - RynofireExplorer225 ah Trojans. Just running 5 led lights for 4 hours, radio/amp prob 8 hrs a day and furnace at night. I'm getting the Renology 100 watt solar charging system to recharge during the day.
- grizzzmanExplorer
Rynofire wrote:
225 ah Trojans. Just running 5 led lights for 4 hours, radio/amp prob 8 hrs a day and furnace at night. I'm getting the Renology 100 watt solar charging system to recharge during the day.
How many days? - RynofireExplorerMin 2, most 5. I am recharging with 100 watt solar panel though.
- MEXICOWANDERERExplorerNo refrigerator. No lights. Hmmm. Theoretical 100 watts for x hours. Doesn't take a Cray computer to assume there's gonna be a blackout tonight. Amplifiers are measured by output no input wattage.
A candlelit campsite seems to always begin with the immortal "But I'm only gonna..."
Personally I wouldn't offer a -guess- at this for love nor money. Stereo power consumption needs to be determined beforehand in a driveway not at a campsite. - rk911Explorer
Rynofire wrote:
Min 2, most 5. I am recharging with 100 watt solar panel though.
watts is watts and amps is amps. if the amplifier is powered by 12-volts then your max amps would be 600/12 or 50-amps. yes, you won't or shouldn't be running those speakers at full wattage. let's say you run them at 6-watts or 1% of the max volume (to illustrate the point) the formula would be 6/12 or .5-amps. if both speakers are drawing 6-watts then the formula is 12/12 or 1-amp. get it? if you ran your amplifier at a 1-amp draw continuously for 24-hrs the total draw would be 24-ah or amp-hours.
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