l7 making odd noise

[mcsoul 10+ year member]

what are the dimensions of the box and the port(s).

 

[king ranch 5,000+ posts]

its not blown its reading exactly 4.3-4.4ohms

 

[king ranch 5,000+ posts]

i played both subs seperate at low to mid volumes both are playing and i free aired the one sub that i was getting the sound from and i heard a sound but not the same sound the sound i heard free airing was like bottoming out i am pretty sure

this is some pics of the sub and a video at the very end of the vid around the 2:10 mark you can hear the slight noise i guess the rest of the video i didnt have the camera close enough

still waiting for the video to upload

 

[king ranch 5,000+ posts]

upp

 

[king ranch 5,000+ posts]

what are the dimensions of the box and the port(s).

box is 33 high double baffle 28 deep and 13.5wide= 5.65 before subs or port displacement and the port is .16 so that drops to 5.49 and say both subs take up .20 drops to right around 5.2-5.3

internal is 30.75x26.5x12

the subs are mounted facing the roof and the port is facing the rear wall its on 6 inch aero tuned at 33-34hz

port length is 10.08 and thats with the flare as well the straight piece is only 9.08

so not sure exactly wat the subs displace so anywhere from 5-5.3 anywhere in there

 

[king ranch 5,000+ posts]

bump

 

[IA2 10+ year member]

Well I'm glad to see the sub looks to be in good shape. Does it do this at only a certain volume or frequency range?

 

[king ranch 5,000+ posts]

yea only at high volumes and only on certain freqs most noticeable on the song blue berry yum, and 3 peat

but it doesnt look like the tinsel is slapping so idk i am just gonna play it until it gets worse where i can hear it without listening for it you know what i mean

 

[king ranch 5,000+ posts]

anyone got anymore ideas

 

[a_steezy]

i doubt 50 more watts is much considering i set gains with a dmm and they arent constantly seeing a true 800rmsand from a few things i read on here ported boxes can make the sub handle power better and can actually give the sub more than rated at times and its only 50rms more per sub

and wouldnt both be doing it and not just one

1. you my friend are retarded, ported boxes lower the power handleing as less resistance is held on the sub and it moves up and down a whole lot easier, sealed holds the pressure on the sub as it moves down, causing more resistance and more power handling, you obviously have no idea what you're talking about

2. you first day with your subs hooking them up you turned your gains all the way up and fed the subs the full 1664 without even easying them in???

3. weren't you the guy that wanted a custom glass enclosure to seperate the back window seats and you were looking for the 'coolest' looking sub regardless of performance to show it off in the sick glass 'box'???

 

[king ranch 5,000+ posts]

deff not me i didnt care about how cool the sub looks

and they have been on 425rms for about 3 months so they have had time to break in and i am giving them 800rms a piece now so they should be fine many people feed their subs the rated power right out of the box and have no problems

why dont u go somewhere no one wants to read your comments

 

[a_steezy]

eh, sorry bout the glass box thing, wrong person, someone else with a ford f150

but mkay, still i win on the ported box thing!!!!!

 

[king ranch 5,000+ posts]

well i did read on here a discussion i cant find at the moment but was reading a ported box allows you to give more than rms since you can tune the box and something called a subsonic filter can fix too much excursion problems

 

[pimpinmex803 10+ year member]

im haveing the same sound come from one sub only at high volume i have 2 L7 12 dual 2 running off a sundown 1500 at .5 ohm

 

[king ranch 5,000+ posts]

wat size is your box and wats it tuned to

and wat sub is it one close to the port of away from the port