Ok, this is gonna probably be a stupid question. I just got my Fi Q 15, it's running in a 3.6cu ft box tuned to 32hz. I set my gains on my sundown 1500 to 31.6v with a 50hz test tone. I get alot of output on rap and bass tracks, but on music like Dave Matthews or John Mayer, or even Stone Temple Pilots, you really hear no bass and the sub is barely moving. I know I have a little air leak around the bottom of the gasket but I dont think that it would make a difference. I have the sub crossed at the deck at 63hz with a 18db slope. No bass boost at the amp. I really would like to know why I dont get much output. I'm happy with it on rap and bass tracks. I move my back wall and shake my windows on bass tracks, but not much output when It comes to Alternative and Rock.

Turn the crossover up higher. . .

well, what is subsonic set at?

Also, download Audacity, highlight a small range of a song and choose Analyze then Plot Spectrum.

Where it says 512, choose 16384

Change linear to log frequency.

Now move your cursor slowly from left to right watching the db level at the frequency.

Find out what frequencies in whatever song u choose peaks at the most and that's the frequency you need to get louder if you want that song louder.

Or it could be that the song doesnt have a high recording level or it's normalized like rap\bass tracks are. The db level will show you all that though.

I've got rap songs that go as high as +23Db! that's as high as i've seen it go for me so far.

dont know man i had some mettalica wangin

Most of the time it is the recording, it's not the sub. Subs are dumb, they do what they are told to do by the amp...and the amp gets the signal from the cd player..

What kind of mids and tweet(s) are you running?

Most of the time it is the recording, it's not the sub. Subs are dumb, they do what they are told to do by the amp...and the amp gets the signal from the cd player..

What kind of mids and tweet(s) are you running?

Subsonic set around 30ish I'm running crappy Infinity Reference Coaxials till I order a new front stage next week. Mach 5 audio 6.5's with some SEAS Neo tweets will be goin in there off of a JL 300/4.

well, what is subsonic set at?

Also, download Audacity, highlight a small range of a song and choose Analyze then Plot Spectrum.

Where it says 512, choose 16384

Change linear to log frequency.

Now move your cursor slowly from left to right watching the db level at the frequency.

Find out what frequencies in whatever song u choose peaks at the most and that's the frequency you need to get louder if you want that song louder.

Or it could be that the song doesnt have a high recording level or it's normalized like rap\bass tracks are. The db level will show you all that though.

I've got rap songs that go as high as +23Db! that's as high as i've seen it go for me so far.

Everything is around 50hz to 60hz and about 7-8db. I have a 60hz -3 db test tone I was thinking about using. Think that would make a difference?

I used a 50hz.

Edited June 27, 200817 yr by dakotap

Most of the bass you're looking for comes from your front stage. If that's a weak point in your system, then you'll notice a distinct lack in that area of sound.