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Message: <blockquote data-quote="-------" data-source="post: 8636975" data-attributes="member: 673930">pertty happy then <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite7" alt=":p" title="Stick out tongue    :p" loading="lazy" data-shortname=":p" />and i forgot to say stock alt, 100 amps bat, no caps and only dropped to 13.8vyesterday i try to quick find the resonant freq of my car and came out ir 46/47hz , just use a spl app on my fone put a low vol so i can check for db diference before the app/phome mic hits the limit (max 93db) and got the signal generator and check each freq gave me move spl at the same vol...below 46 start to lose 1 db then 2db and so on so on, over the 47hz the same, 46 and 47 the exact same db</blockquote>

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