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<blockquote data-quote="Troponin" data-source="post: 8541204" data-attributes="member: 671853">I just had my 12 inch CAB ultra&nbsp; and cab 1600.1 amplifier installed.&nbsp; I am very impressed by the overall loudness and SPL of the speaker. I am, however, having an issue with a certain frequency. The box was built to spec, 2 ft.³ and tuned to 35 hz.&nbsp; It hits very low and does not have any problems in the low range, but it hits a certain frequency a little higher and the speaker starts to &quot;pop&quot;.&nbsp; The speaker obviously does not like that frequency and it sounds like it could be damaging.&nbsp; I took it back to the car audio place where they tried to fix it for me, but when I got the car back, I noticed the speaker was not hitting as hard. It appears as though all they did was turn down the gain.&nbsp; I went back and I turn the game back up, and the popping came back at the same frequency.I know a few people have very similar set ups on this forum, so I was really hoping that one of y&#039;all can help me pinpoint the problem and fix it.&nbsp; It&#039;s almost as if either the box was not built to the correct specs or it is not being filtered correctly.&nbsp; Is one more likely than the other?&nbsp; I am hoping to just troubleshoot this myself instead of having to take it back again over and over.The audio shop had the gain turned down to about 40%. What can the speaker handle with this particular amp? I have it turned up to about 80% now and it still sounds good other than the popping up that frequency. It only hits that frequency in certain songs,&nbsp; so for now I&#039;ve just been turning down the volume with my bass knob to make it go away</blockquote>

[QUOTE="Troponin, post: 8541204, member: 671853"] I just had my 12 inch CAB ultra and cab 1600.1 amplifier installed. I am very impressed by the overall loudness and SPL of the speaker. I am, however, having an issue with a certain frequency. The box was built to spec, 2 ft.³ and tuned to 35 hz. It hits very low and does not have any problems in the low range, but it hits a certain frequency a little higher and the speaker starts to "pop". The speaker obviously does not like that frequency and it sounds like it could be damaging. I took it back to the car audio place where they tried to fix it for me, but when I got the car back, I noticed the speaker was not hitting as hard. It appears as though all they did was turn down the gain. I went back and I turn the game back up, and the popping came back at the same frequency. I know a few people have very similar set ups on this forum, so I was really hoping that one of y'all can help me pinpoint the problem and fix it. It's almost as if either the box was not built to the correct specs or it is not being filtered correctly. Is one more likely than the other? I am hoping to just troubleshoot this myself instead of having to take it back again over and over. The audio shop had the gain turned down to about 40%. What can the speaker handle with this particular amp? I have it turned up to about 80% now and it still sounds good other than the popping up that frequency. It only hits that frequency in certain songs, so for now I've just been turning down the volume with my bass knob to make it go away [/QUOTE]

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