How many amps does this stereo amp use per hour??

Forget 600W. Your stereo will never ever produce 600W. Average efficiency of speakers is around 95dB with one watt of power. That is a lot of noise. These things are notorious for overrating and there really is not any standard for rating. High quality home stereos are rated in RMS power usually into 8 Ohm load with stated level of distortion (THD). The only way to get any idea how much your stereo consumes is to measure DC current at 12 V at average volume and at high volume. My guess is it will be less than 3A. Multiply average DC current by hours of use to get rough estimate of ampere-hours(Ah) it will take from your batteries.

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.

Your audio amp is probably consuming something like 2 or 3 amps at moderate volume. I would be more concerned about the furnace draw, motors draw a lot more power than solid state amplifiers. If you have 225 AH of usable capacity, you should be good for a couple of days without recharging. Operating with the 100W solar panel in a full day of sun, you should be golden with the devices you've listed and the run times.

At some point, it gets really obvious that a battery monitor is needed (not that set of idiot lights that are typical). Monitoring the voltage of the batteries may get you close but the monitors are much more accurate. I have a Victron and it is very capable. Trimetric is also a good solution and the combination of that monitor with their charge controller is something many Forum members have used.

Good luck with your solar charging.

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.

No 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.

Min 2, most 5. I am recharging with 100 watt solar panel though.

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?

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.

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?

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.

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