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Acceptable voltage drop
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<blockquote data-quote="TheBigPilferer" data-source="post: 8863549" data-attributes="member: 690294"><p>That certainly is useful information, and it never hurts to always plan your system around the maximum draw, just to play it safe. With that said, unless you're competing in SPL or playing full tilt sine waves you will generally only draw about half of the maximum draw on most normal music. Exception to this would be if you're playing re-bassed/decaf music where the bass lines are basically 0 db sine waves.</p><p></p><p>I was a bit concerned about my factory electrical being up to par on my 98 QX4 (100 amp alternator with 2 year old standard lead acid battery) with 1400 total RMS in amp power, and I've had zero problems. The lowest I drop is 14.17 from 14.37, and that's with the AC on full blast, bright headlights, etc.</p><p></p><p>I'm glad I have an SUV. Cabin gain is highly in my favor, and my system is as loud as some other systems (in trunk builds) with 3x the power. Not that I really care about Spl numbers or anything personally, but I originally intended upon upgrading little by little and I've found that to be (fortunately) unnecessary. Now I'm just focused upon improving sound quality.</p><p></p><p>I actually had a Sundown SIA-1750 I was going to install that I'd picked up off marketplace in good condition, but I ended up using it for another project and selling it. It never fails to amaze me how much people are willing to pay for the Sundown name.</p></blockquote><p></p>
[QUOTE="TheBigPilferer, post: 8863549, member: 690294"] That certainly is useful information, and it never hurts to always plan your system around the maximum draw, just to play it safe. With that said, unless you're competing in SPL or playing full tilt sine waves you will generally only draw about half of the maximum draw on most normal music. Exception to this would be if you're playing re-bassed/decaf music where the bass lines are basically 0 db sine waves. I was a bit concerned about my factory electrical being up to par on my 98 QX4 (100 amp alternator with 2 year old standard lead acid battery) with 1400 total RMS in amp power, and I've had zero problems. The lowest I drop is 14.17 from 14.37, and that's with the AC on full blast, bright headlights, etc. I'm glad I have an SUV. Cabin gain is highly in my favor, and my system is as loud as some other systems (in trunk builds) with 3x the power. Not that I really care about Spl numbers or anything personally, but I originally intended upon upgrading little by little and I've found that to be (fortunately) unnecessary. Now I'm just focused upon improving sound quality. I actually had a Sundown SIA-1750 I was going to install that I'd picked up off marketplace in good condition, but I ended up using it for another project and selling it. It never fails to amaze me how much people are willing to pay for the Sundown name. [/QUOTE]
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