Recent content by Darwin

i know =/ sorry. most of the stuff towards the end is what is more relevant to the gain setting discussion.

my subs were originally installed by a professional a couple years ago. i didn't bother to find out exactly what he had done, except that he was bridging the 300.2 amp to 2 250w speakers. now i'm trying to educate myself on everything. =) the amp manual says "into 4 ohms bridged @ 14.4 Vdc -...

just FYI, i'm having the exact same prob sungwei. this thread may be of interest to you, though no real conclusions have been reached.

preamps are the RCA plugs on the back of your head unit that you plug amps into. preamp means before amplification (i.e., your built in head unit amp wont touch that signal, because a double amplified signal could be bad news). most of them are between 2 and 3 volts. i really dont know what...

ooookay. well, my good pioneer cd h/u is gone for a couple weeks (long story; short version: i want them to send me a non-scratched face). luckily, when i installed it, rather than clip and solder/tape a whole bunch of wires AGAIN (its getting to be a mess back there), i decided to use those...

okay! i tried the 50hz sine wave through an ipod with exciting results, however, i need to get opinions here if this is a good idea before i burn the sines to a CD. http://www.jlaudio.com/tutorials/Input_Sensitivity/Input_Sensitivity.html this is a very easy to understand flash tutorial on JL...

on songs with a constant low bass line, sure. drone is absent on most songs.

no i mean the custom EQ. low/mid/high. like i said, for the most part i still get the drone when i put the crossover down, its just that everything is quieter... weaker bass. i LIKE the drone, but is it bad for the amp was my main worry. =)

my subs are jl audio 10w3 10" 250w. sealed box. i've tried 80 for some songs, but in my experience it usually just ends up making everything quieter, but if the song has muddy bass its going to stay muddy no matter the crossover. i tried using salt shaker to tune this afternoon before i went...

Thanks. =) yeah i have my amp bass boost off. the first year i had this system i didn't know shit and i blew the amp by cranking that instead of the HU bass boost. hooray for warranty. i'm gonna try these sine waves through an aux input (ipod) when i get a chance. right now i have my sub...

what do you mean by what volume? you mean what volume do i set the head unit at to tweak gain? yeah, i guess 40 or 45. like i said i rarely listen at over 45, so that seems like a natural place to set it at in order to play with gain. note that this is 45 ON CD! the SLA reference is FM tuner...

thanks that does make sense. right now i do have the sub setting at +6 AND the low at +2 (and 125hz crossover). boom is still not quite where i want it.

is it a rattle or what? i tried what you suggested but all i hear when i turn the gain up is that the roof lowers, like, i get bass all the time rather than only with the bass hits. sorta ends up sounding like an irregular hum, just like constant vibration. even with the volume turned up and...

Okay...maybe I'm just stupid, but how do you tell if it's distorting? most speakers are easy to tell but i've never been able to tell when a sub distorts. what am i listening for? thanks for your help! =)

All right sorry for more discussion on this dead thread. =/ I just spent a few minutes messing with it, and discovered that I can get it to sound the way I want it by using the PREOUT: S/W setting (instead of FULL), and setting it at 125Hz with a +6 (kept my amp at 160Hz to cover for what the...