AveoNetwork.com Archive -- on AveoForum.com

edited

AveoRob wrote:

don_deezy wrote:like i said, my practical application means nothing to your theory. You wanted to see my "deezy meters" i showed them to you and you still wont beleive that its possible. Beleive what you want, im the one doing 154.6db on the termlabnoff an 85A alternator with 1 battery and 2 amps.

So, coming back to this discussion, help me with some clarification. In the pictures you posted, it looks like your meters are measuring AC volts? and AC amps? That is what you are showing, correct? 126.7 VAC and 41.6 AC amps? With that calculation, you get over 5000 AC watts.

But this was an alternator post, and correct me if I am wrong, but I think that is a DC output in an auto alternator, hence my assumption that we are talking DC volts, not AC.

So why are you using AC volts as the basis for your calculation? Why not measure the DC amps from the system and use the 14.4 DC volts for a calculation to determine if your DC system needs upgrading?

Audio signals are A/C. He is measuring the output of the amplifier.

Also, measuring the output is the only way to get the true reading of what the system was putting out. If read on the input side it would be even higher because of the losses/inefficiencies of the amplifier.

exactly what they said.

edited

If you go back and read the first post it is actually a question of upgrading the alternator because of the amplifier he wants to install pushing 2000-3000 watts. It is illustrated clearly here that it can be done on a battery and without an alternator upgrade.
However, as I have already stated in here, that is only something that will work in the manner that don has done it. Running the system to push insane wattage for very short bursts. If running longer periods a larger alternator as well as additional batteries would be preferable in my opinion.

Now, for your statement. How is AC output from an amplifier a "scam"? Energy doesn't just magically appear in this equation. Please provide me with factual information if I am incorrect as I am not an electrical engineer.

Thank you Matt. It will be a daily commute not just comps, so looks like i need to try and cram more in the little space I have available with an extra battery. The sub amp I picked up is a Hifonics BXI2610D, that requires 0 guage and a 250 amp external fuse ...not to mention the 2 PDX 4.100's I have that are 60 amps a piece

As far as your multi channel amps they will not pull the full amperage 60 amps unless you run them clipped. So you will be fine as far as the front amp amperage draw is concerned.

Clipping:
The distortion that occurs when a power amplifier is overdriven. This can be seen visually on an oscilloscope, when the peaks of a waveform are flattened, or "clipped" at the signal's ceiling.

Thanks C3. Glad to know the 4 channel's wont be a big strain on top of the mono amp