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<blockquote data-quote="Immacomputer" data-source="post: 4968347" data-attributes="member: 570419">Rarely will headunit preouts put out what they&#039;re rated at and rarely will the labels on the amps be accurate. Setting the gain to 2v on the amp will be just as random and spinning it blindly; in both cases the chances are that it is going to be set incorrectly.The ISF is the Infra Sonic Filter. It is used to help reduce power at very low frequencies. This being set on and too high will result in a loss of output down very low in frequency.The Phase adjustment can be used to &quot;delay&quot; the signal your subs are getting to help the bass sound more like it is coming from up front and to help it be in phase with the front speakers. This won&#039;t really affect the output but it can be very helpful in fine tuning.Your problem is that you went from a sealed enclosure to a shitty pre-fab ported enclosure. Just throwing random subs into a randomly designed enclosure is going randomly give you results. The results could be good or bad but most of the time, they&#039;re going to be bad. If you&#039;re looking for bigger and better sound, you should look into a decent single driver to run on the amp with a properly designed enclosure and not some scorpion flea market trash.</blockquote>

[QUOTE="Immacomputer, post: 4968347, member: 570419"] Rarely will headunit preouts put out what they're rated at and rarely will the labels on the amps be accurate. Setting the gain to 2v on the amp will be just as random and spinning it blindly; in both cases the chances are that it is going to be set incorrectly. The ISF is the Infra Sonic Filter. It is used to help reduce power at very low frequencies. This being set on and too high will result in a loss of output down very low in frequency. The Phase adjustment can be used to "delay" the signal your subs are getting to help the bass sound more like it is coming from up front and to help it be in phase with the front speakers. This won't really affect the output but it can be very helpful in fine tuning. Your problem is that you went from a sealed enclosure to a shitty pre-fab ported enclosure. Just throwing random subs into a randomly designed enclosure is going randomly give you results. The results could be good or bad but most of the time, they're going to be bad. If you're looking for bigger and better sound, you should look into a decent single driver to run on the amp with a properly designed enclosure and not some scorpion flea market trash. [/QUOTE]

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