8v fury Posted December 25, 2018 Report Share Posted December 25, 2018 Have one Sundown Audio SAE-2000d and two Sundown SA-12 Rev.3 Dual 4 ohm subwoofers. It is wired up to be at 1 ohm. What is the number I should be using to set the amp gain on the multi meter, I have search online and googled it, but coming up with different voltage numbers to have the amp set up at. Pushing it to the limits. Want more power. Link to comment Share on other sites More sharing options...
Bret Posted December 25, 2018 Report Share Posted December 25, 2018 Taken from https://knowledge.sonicelectronix.com/car-audio-and-video/car-amplifiers/how-to-adjust-amplifier-gains-using-a-digital-multi-meter/ Voltage = square root of watts x ohms. For example, a 500W RMS amplifier at 2 Ohms would configure like this: 500W RMS X 2 Ohms = 1000W. Now take the square root of 1000W and your voltage should be 31.62V you should read the entire article if you haven’t already. hope this helps. Link to comment Share on other sites More sharing options...
8v fury Posted December 25, 2018 Author Report Share Posted December 25, 2018 I have read the article. But since the subwoofers have a lower RMS then the amp RMS, would I set the voltage based off the RMS of the subs. Pushing it to the limits. Want more power. Link to comment Share on other sites More sharing options...
Bret Posted December 25, 2018 Report Share Posted December 25, 2018 Yes. The point of doing this is to set your amp so that it’s output can’t exceed the rms rating of your subs. Setting your amp gain this way does not account for distortion and you could end up setting your gain too high using this method, so take that into account. Link to comment Share on other sites More sharing options...
Ron36 Posted December 25, 2018 Report Share Posted December 25, 2018 Square root of 2000 is 44.7 so that’s your AC voltage you stop around. 2022 Ford Maverick on 22’s Skar SK1500.1 on 4 Skar VD-8’s Mids Sundown Super tweeters, Skar TX 6.5 components on Skar SKM400.4 LC2 for audio control , XS Power D680 XS Series Extra Battery Link to comment Share on other sites More sharing options...
Ayork Posted January 6, 2019 Report Share Posted January 6, 2019 I use this app for android to know what voltage. Link to comment Share on other sites More sharing options...
Kyblack76 Posted January 6, 2019 Report Share Posted January 6, 2019 Might as well just use your ear and nose. SMD SUPER SELLER The Burban Build Blazer Build sold Acura trunk build sold Link to comment Share on other sites More sharing options...
k58.cross Posted January 25, 2019 Report Share Posted January 25, 2019 Use a clipping indicator and set gain during the loudest/harshest music you intend to play. There's just too many variables otherwise to rely on the volt meter method. Different songs all have different volume levels and bass levels due to how they were mixed and how people digitized them etc etc. Just play your music loud, watch the clipping meter, and set gains so the harshest stuff doesn't clip. One aside to that: I find that certain kick drums and fast beats will clip even if the rest of the song is quiet by comparison. Those "quick clips" are going to be tough to avoid without weakening everything else you play. As long as they aren't sustained and happening very often you should be OK. Link to comment Share on other sites More sharing options...
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