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Correct way to set gain with DMM?
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<blockquote data-quote="VWBobby" data-source="post: 7293519" data-attributes="member: 624844"><p>-01limited-, wow I couldn't agree with you more. Thanks for straightening out our little friend..... //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif</p><p></p><p>The chart I was referring to earlier was the one that someone above posted. Good work. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif</p><p></p><p>If you want to set your sub with your volume at a lower setting, you're going to need to increase your gain a little higher than normal to compensate.</p><p></p><p>Set your HU at 20 (or wherever you like) and adjust your gain until your sub is as loud as you need it but don't go past 75% gain if you can help. Most amps introduce noise and hum at anything around this level.......Most high quality or clean amps don't. When you're running your HU at 14, there's no way you're clipping it if it was adjusted when it was at 20.</p><p></p><p>As long as you don't turn your HU up past 20, you won't be clipping your sub, with the gain set correctly for this level.</p><p></p><p>To figure your amperage, you are going by your voltage at the given load.</p><p></p><p>Watts = Amps x Volts x Length of wire (resistance, or in your case impedance of your subs)</p><p></p><p>If you're trying to set your gain to your HU output, you have to measure your RCA voltage, not your voltage at the speaker terminals of the amp!</p><p></p><p><a href="http://www.the12volt.com/ohm/ohmslawcalculators.asp" target="_blank">http://www.the12volt.com/ohm/ohmslawcalculators.asp</a></p></blockquote><p></p>
[QUOTE="VWBobby, post: 7293519, member: 624844"] -01limited-, wow I couldn't agree with you more. Thanks for straightening out our little friend..... [IMG]//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif[/IMG] The chart I was referring to earlier was the one that someone above posted. Good work. [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] If you want to set your sub with your volume at a lower setting, you're going to need to increase your gain a little higher than normal to compensate. Set your HU at 20 (or wherever you like) and adjust your gain until your sub is as loud as you need it but don't go past 75% gain if you can help. Most amps introduce noise and hum at anything around this level.......Most high quality or clean amps don't. When you're running your HU at 14, there's no way you're clipping it if it was adjusted when it was at 20. As long as you don't turn your HU up past 20, you won't be clipping your sub, with the gain set correctly for this level. To figure your amperage, you are going by your voltage at the given load. Watts = Amps x Volts x Length of wire (resistance, or in your case impedance of your subs) If you're trying to set your gain to your HU output, you have to measure your RCA voltage, not your voltage at the speaker terminals of the amp! [URL="http://www.the12volt.com/ohm/ohmslawcalculators.asp"]http://www.the12volt.com/ohm/ohmslawcalculators.asp[/URL] [/QUOTE]
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