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Car Audio Equipment
Amplifiers
Setting amp gain with multimeter - load or no load???
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<blockquote data-quote="momofx" data-source="post: 7917339" data-attributes="member: 645287"><p>Ok guys I did a small test with an old 12" 300wrms 4ohm Hifonics sub I have laying around together with a 50Hz 0dB sine wave from Bass Mekaniks CD, (head unit volume was well below half so no distortion / clipped input) and honestly there is BARELY any difference with and without the amp having a load. Here are the pics to prove the results //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif</p><p></p><p>This is without the sub connected :</p><p></p><p><img src="http://i265.photobucket.com/albums/ii230/momofxxx/XB2/Img_0161.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>This is WITH the sub connected (0.04 AC drop - not even really worth worrying about!) :</p><p></p><p><img src="http://i265.photobucket.com/albums/ii230/momofxxx/XB2/Img_0160.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Think I have found my answer //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif Besides annoying the neighbors and risk of destroying the sub plus shaking stuff off the shelves in my garage lol, I think using the dmm method with no load, IS OK in my book!</p></blockquote><p></p>
[QUOTE="momofx, post: 7917339, member: 645287"] Ok guys I did a small test with an old 12" 300wrms 4ohm Hifonics sub I have laying around together with a 50Hz 0dB sine wave from Bass Mekaniks CD, (head unit volume was well below half so no distortion / clipped input) and honestly there is BARELY any difference with and without the amp having a load. Here are the pics to prove the results [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] This is without the sub connected : [IMG]http://i265.photobucket.com/albums/ii230/momofxxx/XB2/Img_0161.jpg[/IMG] This is WITH the sub connected (0.04 AC drop - not even really worth worrying about!) : [IMG]http://i265.photobucket.com/albums/ii230/momofxxx/XB2/Img_0160.jpg[/IMG] Think I have found my answer [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] Besides annoying the neighbors and risk of destroying the sub plus shaking stuff off the shelves in my garage lol, I think using the dmm method with no load, IS OK in my book! [/QUOTE]
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Setting amp gain with multimeter - load or no load???
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