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<blockquote data-quote="n2audio" data-source="post: 8387921" data-attributes="member: 540940">I think we&#039;re slowly accumulating all the shortcomings for you.Primarily -- that sub&#039;s a turd.It WOULDN&#039;T be such a turd if it wasn&#039;t ~$100 a few years ago, but it was, and that&#039;s BS.Crutchfield sold it for $130 which would probably have made it one of the biggest turds out there at the time.With an xmax of 5.3mm it simply isn&#039;t going to play low at ALL.I took the time to model it in a sealed box -- yours is .65-.70 I believe.&nbsp; Output peaks at about 85hz and is down 3db by about 53hz, and basically useless at about 40hz.&nbsp; Essentially, in that box, it&#039;s a mid-bass.A bigger box would flatten it out a little (not that bigger is an option), but it would still lack output nearing 40hz.A few people have suggested it needs to be ported, which would help, but again, at 5.3mm it would bottom out before it produced anything that could be considered respectable bass.So for starters, you need a better sub.&nbsp; You need to do some research for a GOOD small sealed box sub.&nbsp; Large and/or ported really isn&#039;t an option in the space you&#039;re working with.The amp - as mentioned - has a 25A fuse.&nbsp; So it&#039;s not helping the cause either.Logically you could expect something around 200w rms out of it at optimal impedance which is 2 ohms, but you&#039;re running at 4 and probably getting 125-150 -- 50-70 mentioned by others is extremely pessimistic.So you can tune the amp and mess with the box all day long.&nbsp; You&#039;re not going to get much out of it.</blockquote>

[QUOTE="n2audio, post: 8387921, member: 540940"] I think we're slowly accumulating all the shortcomings for you. Primarily -- that sub's a turd. It WOULDN'T be such a turd if it wasn't ~$100 a few years ago, but it was, and that's BS. Crutchfield sold it for $130 which would probably have made it one of the biggest turds out there at the time. With an xmax of 5.3mm it simply isn't going to play low at ALL. I took the time to model it in a sealed box -- yours is .65-.70 I believe. Output peaks at about 85hz and is down 3db by about 53hz, and basically useless at about 40hz. Essentially, in that box, it's a mid-bass. A bigger box would flatten it out a little (not that bigger is an option), but it would still lack output nearing 40hz. A few people have suggested it needs to be ported, which would help, but again, at 5.3mm it would bottom out before it produced anything that could be considered respectable bass. So for starters, you need a better sub. You need to do some research for a GOOD small sealed box sub. Large and/or ported really isn't an option in the space you're working with. The amp - as mentioned - has a 25A fuse. So it's not helping the cause either. Logically you could expect something around 200w rms out of it at optimal impedance which is 2 ohms, but you're running at 4 and probably getting 125-150 -- 50-70 mentioned by others is extremely pessimistic. So you can tune the amp and mess with the box all day long. You're not going to get much out of it. [/QUOTE]

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