mile098

first of all im sorry if i missed the forum, mod please move it if i did second..ok here goes:( -------------------------------------------------------------------------------- ok, pls take the time to read this. i have developed a hissing sound on my front speakers lately. i say lately because when i installed the amp it wasn't there..its not much, on the majority of the songs i cant hear it, but on some its annoying. the only thing i changed is up the gain on my front amp speakers, but not enough to clip. now it doesn't matter where the gains are set the hiss increases with the hu's volume. i've had engine whine problems before and it drove me insane and this isn't it, more like static. power and ground are 35mm^2(2 awg i think) till the trunk, distributing into 10mm^2(? awg) to the amps. im losing aprox 0.3-4 volts on the cable at full tilt from the bat to the trunk(my dmm is not 100% accurate tho). i reinfocrced the ground from bat to the engine with 35mm^2, the ground in the trunk is taken from the seat belt motor. and when ever i power up the amps i hear a slight bump on the subs. besides running another 2 awg cable directly from the bat for ground thats the best i coud find. im guessing its bad ground, what do you guys think? edit: when i turn up the volume on the HU i hear a barely noticable cracking sound, which as far as i know has to be bad ground... any input is welcome

the hiss is not engine related, and between songs its non existant, you can hear it fade out with the song..and its different intensity for each song..i thought it was a bad song at first but i tried original CD's, audio burned, mp3's the works..and its the same edit: and its the same if i play it from and usb stick and a cd

3.3 b4 sub and port diplacement, 2x12''s 32 Hz..pretty happy with it

what would be the distance in the first sketch? im no expert but i think the distance should be greater then what the pic suggests. and if you're gonna make a box that shallow be sure to use bracing for integrity

define blow? u burnt the coils or did the driver fell apart?

have a friend that had this problem, his soundstream kept popping his trunk too..and its a hatchback:) it is a bitch, he used various clips and chit and eventualy just had to turn the gains down.. with that output i think the locals already know what you got in the car:) plus the screens are a 'take me please' sort of thing. hope you got a good alarm:)

you didnt give an Op you made statements. ...... i simply stated that i have a stong chargeing system. and then i went and did another vid. to show you. i like you miles.... o yeah.. and your right in the first vid it looks like my meter is showing 12's...... and i was wondering is someone may ask about that... but i also figure that people know what its like when you look at say an alarm clock from an angle in the sun... you can see all of the numbers and its weird. see i observe things:) seriously i like your setup, and the reason im saying i think the port is too close is because any 15'' let alone 2 and on that power would have one hell of an output, and they need every sq inch of port area you give them.any obstacles in front of the port gets in the way of the woofer's 'breathing'...if they are at least a diameter of that slot port's aero equivalent distant from the back of the trunk it's all good. i tangle'd that up didn't I?:(i hope you understand what i'm trying to say

chill man, I wasn't flamming you, you put the videos to get feedback and i gave you mine.. read my post again.. the port is too close to the back IMO of course edit: and about the voltage i did say if im reading it correctly, a simple you saw wrong would be sufficiant

ok, i'm gonna risk one hell of a flamming here and ask you guys. i was nomeened R-tard of the month on CA.com for saying this so chances are it's gonna happen here too, but what the hell K my question is can you guys hear the difference between a 4 ohm and 1 ohm load? now im not talking about sitting in someone else's car and knowing it, but if you have a 2x2 sub and wiring it to 1 and 4 ohm load. i have tried it with a two different amps(a 2 channel in 2 ohm bridge) and my current RF bd 1000.1. although on a 1 ohm load and lower it ponds like a bastard it just sounds too off, sort of muddy... this all applies if the amp is stable on those loads of course just curious...

looks loud..really loud..but i have two objections tho. 1. is that with the engine on or off? in the first vid if im reading it correctly your voltage drops to almost 12 when the bass hits, you may need to upgrade to a bigger battery or alt. 2. your port is way too close to the back of your trunk, push the box further back if u can.

nice, whats the equipment in there?

you gonna have to clarify that question a little bit? i don't follow what you're asking.

soundstream doesn't work well in closed..at all. ebp is around 100 for that sub

it's always better to have a stronger amp then the power you really need. a more powerful amp will produce the power you require under all terms not just 14.4 it will run 'smoother' won't heat up as much and if you don't run it at full throtle the power consumption is less of course, so there is no need for a new alternator or much modifications to the electrical system..im not gonna recommend anything since i don't know what you guys use mostly over there, just thought i'd correct a misconception.. in any case it's a bump:)

i chcked the tinsel, all the soldering points are good. it only gets hot goin full volume, but its only 1 sub that gets hot! how would i check the coils? could it be that when i reconed the woofer didnt sit strate? when i push the sub down it feels just like the other one. when i reduce the gain it still gets warmer then the other sub, but not as bad... i need to get an oscope i guess... i just really need to fix this problem dustcaps shouldn't get warm..wait thats the sub you reconed? did you center the coils right? any stratching or anything when u push it down with your hand? and check the coils with a dmm

thnx guys...ive developed a hissing problem tho, barely noticable but still and a lil bit of a cracking sound in the speakers as i turn up the volume, have to work on that, once i get the time. probably need to tighten the ground a lil bit more..but it started today, and after i got this amp thats the first thing i listened for because there was engine whine issues in the past and it drove me absolutely insane. the only thing i changed, was turn the gain up a bit, but not enough for it to clip..ill bug you with questions after i try resolving it on my own first

ok, heres what im currently riding with HU: kenwood 7534 uy fronts: phase evolution cfs 165 amp:macaudio fearless 2000 sub:2x infinity kappa perfect 12.1 amp2: RF bd 1000.1 before this there was a chit load of different amps, HU's, not so much fronts and subs tho...but im happy with what i got now doors ready Upload Images with PicTiger Photos Gallery - PicTiger my HU, tweets, dont have a pic of the midbass but will get it soon..the box needs to be carpeted and trunk deadened. Free Photo Hosting - PicTiger if anyone's that interested you can look at some of my previous equipment on my pictiger account. heres a couple of videos i did the other day thats pretty much it for now

Because there's music out there that has content down there... true, but it's a hell of a stress on the subs, so to speak..and i dont think im missing much without it plus its so fun i'll grant you that

welcome,i remember you avatar from ca.com.me like

that was some excesive deadening there, congrats man, ure really taking your time with this, making sure everything is in order..it must pay off in he end

subs and amps don't have magic if you think something is wrong it has gotta be measureable. check the coils, the tinsel and the wiring again. did you try interchanging the master/slave amp and see if its the same? or reducing your gain level? does it get warm no matter the volume/gain level?

where was he in croatia?im not sure if i can reply in the newbie section(my home forum doesn't allow it) so you can PM me..thanks for the welcome everyone

k, so let me introduce myself living in Croatia, and have been in CA for about 3 years. Till tonight i was a member of caraudio.com till someone hijacked a mod's account and banned half the forum including me my current setup consists of: HU: Kenwood 7534 uy front: phase evolution cfs 165 sub: 2x infinity kappa perfect 12.1(ported@ 32 Hz) front amp: mac audio fearless 2000 sub amp: rockford fosgate bd 1000.1 future plans: deaden my trunk and probably make fiberglass panels for my front stage my knowledge is not vast so to speak but if i can help i will

nice score, pushing in the 60's club anytime soon?

yes thats what i mean..my hearing is far from perfect but i do hear the difference.. i don't set the gains with a dmm tho, just go by the ears