xballking21 Posted May 20, 2011 Author Report Share Posted May 20, 2011 im about to go turn my gain down now too Quote #winning 2 DC AUDIO XL 12s 2 hifionics 2600 2 Deka yellow tops big 3 everything you need to know about car audio... Bacon strips and Bacon strips and Bacon strips Link to comment Share on other sites More sharing options...
RickyFriery97 Posted May 20, 2011 Report Share Posted May 20, 2011 (edited) ricky check my box build thread too i need to build a new one asap i work at lowes so im gettin more mdf today build that box i told you to build im going to asap im getting mdf today i just need to know how the L should be in the port TIG said like 3 inches or some shit idk 4.53 cubes after all disp. tuning-34hz 62.5 sq inches of port (13.8 per cube) sub up port back (three common walls) the port dosent bend (even though it says it does) make the port wall 17.25" long, no turn Edited May 20, 2011 by RickyFriery97 Quote 2014 Chevy Silverado Crewcab 1994 Chevy Full Size blazer Link to comment Share on other sites More sharing options...
C-Fizzy Posted May 20, 2011 Report Share Posted May 20, 2011 How did you tune the amplifier? is it clipping? Are you getting the full 2000RMS ot just cranking your gain up? 3.5cft sounds like its too small to me. Hes running 2000RMS its the BRz2000.1 but his electrical looks on the small side. Stock alternators DONT like over 2000RMS and could be casuign massive clipping. What headunit? whats max volume? what preout voltage is it? whats cliping? and i have a subaru legacy 2009 its got a 110 alternator and i have a diehard battery its pretty big im gettin a xs soon but i get like 12.77 volts i think but i havnt checked while there playing ohlawddyyy Quote under construction I hate People with crappy primered cars rolling on hubcaps that are louder then me. u hate c-fizzy? Link to comment Share on other sites More sharing options...
Sammitch0 Posted May 20, 2011 Report Share Posted May 20, 2011 That box looks perfect go off that. As far as clipping it's when the voltage produced by the electrical is too low for the voltage produced by the amplifier and causes the amplifier to clip sine waves to compensate, which will cause kick offs, bottom outs and worst of all a blown coil. The BRZ does rated but ONLY at 14.4v so if you're only getting 12.7v thats FAR from enough you're probably getting more like 1500RMS. Also it doesnt matter how high your volume is or how high it goes some headunits go up to 63 like mine but you want to play around 3/4 volume. It also helps to know what headunit you have to figure out the preouts, if you have 4v that amplifier is turned way too high if you have 2v then it could be something else. I think it's a lot of LITTLE things causing your problem. Your electrical isn't too bad but from the drop youve described thats really low. Start off with a new box, turn your gains down and learn how to setup gains with a multimeter. Quote Grand Cherokee Team Backwoods Bumpers DC 15" Level 3's /w 4 Coils Pioneer deh4200ub Pioneer 3-ways Pioneer Tweeters Pioneer GM-D9500F Audiopipe 1500.1D @ 14.4v Clarion Equalizer Knuconeptz Kollosus 0ga Knuconpetz Kollosus 4ga Coming Soon: 270xp / xs1200 Link to comment Share on other sites More sharing options...
Emmet Posted May 20, 2011 Report Share Posted May 20, 2011 whats cliping? and i have a subaru legacy 2009 its got a 110 alternator and i have a diehard battery its pretty big im gettin a xs soon but i get like 12.77 volts i think but i havnt checked while there playing 12.77 volts when its not playing? Christ... Quote i shook this one kids hand and it just folded in mine. long story short i fucked his girlfriendso.. yeah.. You want this to happen to you? Give decent handshakes people. I was gifted with an innate ability to distribute wholesale ass beatings in a timely and orderly fashion. Link to comment Share on other sites More sharing options...
matt402 Posted May 21, 2011 Report Share Posted May 21, 2011 uhh ohh... take some time to read & learn some things on here, the12volt.com, & other sites. ur system wont last long if it isnt set up properly. Quote Link to comment Share on other sites More sharing options...
monkeyleg Posted May 21, 2011 Report Share Posted May 21, 2011 Yea you need to spend a couple hours reading first. You have a DC sub but don't know what clipping is. That's dangerous. Quote Google it Link to comment Share on other sites More sharing options...
CJ18 Posted May 21, 2011 Report Share Posted May 21, 2011 The XL 15s sweet spot is 3-3.5ft3 after displacements. From the sounds of things you are clipping your amp to hell and back. The gain and bass boost are not volume or power knobs. The gain is meant to match the RCA input voltage. Most amps work from .5-6v of input voltage. So basically what you want to do is unplug your rcas from your sub amp and play a 40hz tone with the HU volume at 3/4 and the bass knob turned all the way up. You then want to take a multi meter and set it to AC voltage and check one RCA for you voltage. Lets just say you are getting 2v from your headunit. You now want to match your gain as closely as possible to 2v. If you amp is capable of running up to 6v input then that would mean if you have 6v of input at the rcas, your gain would be all the way down. Try and use the hash marks around the gain knob to get a good idea what each one is worth and set the gain accordingly. Quote Link to comment Share on other sites More sharing options...
CJ18 Posted May 21, 2011 Report Share Posted May 21, 2011 Also forgot to mention that if it sounds like complete crap at a higher volume you might want to pull the sub and check both coils to make sure they arent blown. If you were cliiping as bad as it sound you may have blown the sub. Quote Link to comment Share on other sites More sharing options...
monkeyleg Posted May 21, 2011 Report Share Posted May 21, 2011 Um sticky that shit^^^ ATTENTION NEWBIES, DO YOU HAVE AN AMP? READ THIS! Quote Google it Link to comment Share on other sites More sharing options...
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