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Voltage Variation Question
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<blockquote data-quote="Volvowith18psi" data-source="post: 6795146" data-attributes="member: 621805"><p>Hello all, new to the forums!</p><p></p><p>Had a question about acceptable voltage variations if you don't mind:</p><p></p><p>Car is a 95 Volvo 850</p><p></p><p>100 A/H Alt ( Stock )</p><p></p><p>Optima Yellow Top</p><p></p><p>"Big 3" Complete w/ 4g</p><p></p><p>4x BA 5 1/4" off the Kenwood Deck</p><p></p><p>1x Kendwood 9105D Amp @ 1ohm (900 rms)</p><p></p><p>1x Kicker 12" L5 in Vented box</p><p></p><p>After doing my big 3 yesterday, I was monitoring the voltage variations in the lines and had a question about what is acceptable / expected at full "bump" and what I need to be worried about.</p><p></p><p>Meter read about 14.18ish across the battery w/ the car @ idle, stereo on @ volume 0.</p><p></p><p>Now, at 95% bump, I was dropping to around 13.7+ - across the battery. The new Alt lead still showed around 14ish.</p><p></p><p>Is losing around .5v to be expected while the amp and sub are doing their job? Should I be looking into a custom Alt build? Should I be worried my car will not start in a few days/weeks even though the volume is not full most of the time when I drive the car?</p><p></p><p>I have priced one, from Ohio Gen. @ 525ish for 180-200amp direct bolt on... A bit steep, but meh, Its a Volvo lol. About the only one I can find in the 180 range that's a direct bolt up... Darn the transversely mounted 5cyl engines.</p><p></p><p>Im also looking at adding a simple 50x4ish kenwood to power my mids and highs to stop the distortion at high volume, would I need to worry about amperage draw then?</p><p></p><p>Thanks alot for your help!</p><p></p><p>Andrew</p></blockquote><p></p>
[QUOTE="Volvowith18psi, post: 6795146, member: 621805"] Hello all, new to the forums! Had a question about acceptable voltage variations if you don't mind: Car is a 95 Volvo 850 100 A/H Alt ( Stock ) Optima Yellow Top "Big 3" Complete w/ 4g 4x BA 5 1/4" off the Kenwood Deck 1x Kendwood 9105D Amp @ 1ohm (900 rms) 1x Kicker 12" L5 in Vented box After doing my big 3 yesterday, I was monitoring the voltage variations in the lines and had a question about what is acceptable / expected at full "bump" and what I need to be worried about. Meter read about 14.18ish across the battery w/ the car @ idle, stereo on @ volume 0. Now, at 95% bump, I was dropping to around 13.7+ - across the battery. The new Alt lead still showed around 14ish. Is losing around .5v to be expected while the amp and sub are doing their job? Should I be looking into a custom Alt build? Should I be worried my car will not start in a few days/weeks even though the volume is not full most of the time when I drive the car? I have priced one, from Ohio Gen. @ 525ish for 180-200amp direct bolt on... A bit steep, but meh, Its a Volvo lol. About the only one I can find in the 180 range that's a direct bolt up... Darn the transversely mounted 5cyl engines. Im also looking at adding a simple 50x4ish kenwood to power my mids and highs to stop the distortion at high volume, would I need to worry about amperage draw then? Thanks alot for your help! Andrew [/QUOTE]
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