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<blockquote data-quote="wifiuk" data-source="post: 8216980" data-attributes="member: 659426">these are all stock speakers running from the headunit, nothing after market but they are separated, so 2 tweeters in the A pillars and back doorsand 4 mids and bassier speakers in lower front and rear doors ( factory standard )also i have the multimeter on the left below<img src="http://www.deree.com.tw/proimages/multimeter/DE-200A201A-Digital--Multimeter.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />i have tried all the settings, not sure which one to be using to tune the gain on the AMP.but when running the 50Hz test tone with 0db on my system, i cant seem to see any changes to the voltage when i turn the gain up or down ...also the speakers in the car are spitting out the 50Hz tone too .... not sure how to use the HPF to stop them playing it ..what am i doing wrong?</blockquote>

[QUOTE="wifiuk, post: 8216980, member: 659426"] these are all stock speakers running from the headunit, nothing after market but they are separated, so 2 tweeters in the A pillars and back doors and 4 mids and bassier speakers in lower front and rear doors ( factory standard ) also i have the multimeter on the left below [IMG]http://www.deree.com.tw/proimages/multimeter/DE-200A201A-Digital--Multimeter.jpg[/IMG] i have tried all the settings, not sure which one to be using to tune the gain on the AMP. but when running the 50Hz test tone with 0db on my system, i cant seem to see any changes to the voltage when i turn the gain up or down ... also the speakers in the car are spitting out the 50Hz tone too .... not sure how to use the HPF to stop them playing it .. what am i doing wrong? [/QUOTE]

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