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Old Oct 25, 2006 | 11:37 AM
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Default Need some input help please

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Last edited by infamous350; Sep 5, 2007 at 09:18 AM.
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Old Oct 26, 2006 | 02:19 PM
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What was the question again?

Clipping is caused by over driving the amplifier.

ANY AMPLIFIER CAN BE DRIVEN INTO CLIPPING NO MATTER HOW BIG OR EXPENSIVE.

So adjust your input levels into your amplifier and be done with it once and for all.
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Old Oct 26, 2006 | 04:25 PM
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So you want to know if you can run the JL amplifier in the Z's electrical system?

Sure ... but 980W is not enough power for 2 12s. Get a more powerful amplifier .. the Z's electrical system will be fine.

By the way .. subs don't clip.
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Old Oct 31, 2006 | 08:34 AM
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thnx sry i know some but not enough apartantly lee so wut is making the amp cut exsatly the protection light comes on and it clips is it because i have both subs wired in 2 ohm so then its putting out a .5ohm or something right is that the cause should i just wire them positive to negative or keep it positive to positive negative to negative sry for the typo at work got to do it quickly
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Old Oct 31, 2006 | 08:36 AM
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its 980watt RMS that should be enough thats 490 to each w6 thats perfect plus even when i ran 1 15" w3 vrc i still was clipping its so annoyin lol
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Old Oct 31, 2006 | 08:59 AM
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If you have a more powerful amplifier (ie - headroom), you will be less likely to experience clipping during demanding music/bass tracks. Your subs will be fine with a momentary overpowering, just learn to hear distortion and you will be able to protect them just fine.
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Old Oct 31, 2006 | 10:18 AM
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i have very good hearing i know exsactly how it sounds when it start disorting so do you think i should just run my 2 10" w3 d4's instead and it will be a better setup i havent had these in the z yet im just worried from teh exsperience i had from having them in the pontiac i apreciate ur input
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Old Oct 31, 2006 | 10:19 AM
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Originally Posted by infamous350
its 980watt RMS that should be enough thats 490 to each w6 thats perfect plus even when i ran 1 15" w3 vrc i still was clipping its so annoyin lol
I agree with Paul350Z, Your clipping proplem is because your gains on your amp are set to high on your amp. The gains should be adjusted to match the line level out put of your head unit.
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Old Oct 31, 2006 | 10:21 AM
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I'd run the 12W6s in favor of the 10W3s anyday ... just make sure they get their airspace

As others have said, be sure to properly set your gains. Read the tutorial on that if you need some assistance.
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Old Nov 1, 2006 | 05:55 AM
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guess i dont know as much as i thought lol so wait i thoughti could turn the gain all the way up since my subs can take it so ur sayin i have to adjust it with the headunit wasnt aware can someone guide me in the right place i have no idea how to do that funny i been installing systems for a while never adjusted to the line level output how do i know wut it is im using a alpine 9853 the one with the glide touch sry to be such a noob
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Old Nov 1, 2006 | 05:59 AM
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Also my next question before i had the head unit i installed a 7" lcd in the cubby at the time i knew i would be changing the headunit so i just plugged the lcd into a power invertor so i can use it with my modded xobx for the time being now when i install the head unit i want to hard wire it elminatiing the invertor can i just cut and strip the wires and connect it to 12v being the orange wire a beilieve and just ground the other wire? or do i need to put a fuse or resistor or something? im gunna start this on friday and want to do everything at once tryint to elminate as much trial and error
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Old Nov 1, 2006 | 06:19 AM
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Originally Posted by infamous350
guess i dont know as much as i thought lol so wait i thoughti could turn the gain all the way up since my subs can take it so ur sayin i have to adjust it with the headunit wasnt aware can someone guide me in the right place i have no idea how to do that funny i been installing systems for a while never adjusted to the line level output how do i know wut it is im using a alpine 9853 the one with the glide touch sry to be such a noob
"." are your friends.

Poorman method
1. Turn the gain all the way down.
2. Turn the volume control on the head end up to 3/4's of the way to maximum.
3. Turn the gain upwards until distortion is heard.
4. Turn the gain down a bit.

Smartman method
1. Break out a calibrated lab microphone and o'scope.
2. Break out a test CD with a 0 VU tone recorded at 20, 25, 30, 35, and 40 Hz.
3. Connect the o'scope up to the RCA outputs of the head end and play back the test CD.
4. Adjust the volume control upwards looking for clipping in the waveform.
5. If it appears this is the maximum volume you should use - record it.
6. Return the RCA connections back into the amplifier, dawn hearing protection, install the lab microphone and do the test over again.
7. Adjust the gain control of the amplifier looking for clipping.
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Old Nov 1, 2006 | 06:24 AM
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Guess ill do the poor man method lol so i should put the volume almost all the way up basically and turn the gain up until i hear distoration then turn it down till i dont hear none and it should be good like that and any input on the hard wiring the screen your are great help thnx alot
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Old Nov 1, 2006 | 11:37 AM
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There are systems out there, like mine that are digital. So matching the gain to head unit is easy, my amps display the gain voltage so i just match it to the specs on the head unit.

You should be ok, just follow Paul350z steps.
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Old Nov 1, 2006 | 12:13 PM
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thnx alot paul and everyone else but does anyone have an idea about the lcd can i just splice it and connect it to a 12v and a ground also when i was solderng the wireing harnest to the alpine harnest i soldered the black wire to the black wire which is ground is that fine or should i desolder and ground the head unit to a screw or something? you would think a jl amp would have a display like that lol it only cost me like 600 buks lol
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Old Nov 4, 2006 | 12:36 AM
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thnx for the help everything worked out good some how the lcd works with ac and dc just soldered it to the yellow wire on the harnest and it worked perfect its now brighter and has no interference and the alpine made the bose speakers sound a good amount more crisp and louder i was gunna put the box in i think im just gunna put the w3 instead of the w6 because i like the understrut box for the tens and they only make a 12 inch box that faces the subs up which also looks really heavy w3s will be alot lighter and prolly still give me enough base the w6's might be a lil to loud sux that i have them and not using them though
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Old Sep 5, 2007 | 09:18 AM
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so im gunna trade my 2 12" w6s cause i cant find a good box. For one 10 inch w7 and some 2000 watt rms amp whcih i wont be using. I was thinkin get the 10" enclosure from zenclosure. And use my jl audio e1800d 12.5volt amp. 980watts @2ohm and i think 400@4ohm. But the w7 runs at 3ohm it says i want it to be stable. I should be fine with that setup ?


Didnt want to make a new thread so i reused this one
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Old Sep 5, 2007 | 10:20 AM
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Originally Posted by infamous350
so im gunna trade my 2 12" w6s cause i cant find a good box. For one 10 inch w7 and some 2000 watt rms amp whcih i wont be using. I was thinkin get the 10" enclosure from zenclosure. And use my jl audio e1800d 12.5volt amp. 980watts @2ohm and i think 400@4ohm. But the w7 runs at 3ohm it says i want it to be stable. I should be fine with that setup ?


Didnt want to make a new thread so i reused this one
You're better off (I think) with the single 10" than you are with 2 12" subs in the Z anyway.

The 10W7 handles 500 watts rms. At 3ohms, your e1800 amp will put out around 690 watts rms (if the specs you quoted are correct). That is plenty of overhead for some clean sub bass. As stated throughout this thread, PLEASE tune your amp properly! You can install $20,000 worth of audiophile grade equipment, but if it's not tuned properly, it WILL sound like POO!!!!!
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Old Sep 5, 2007 | 03:00 PM
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thnx alot i will defintly tune it this time i thougth i knew all my **** but relized i got alot more to learn hahah thnx for the help cant wait to put my w7 in i miss my basssss. going from 3 w6s to a stock bloseeee sub was torcher haha
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Old Sep 5, 2007 | 03:09 PM
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Originally Posted by infamous350
thnx alot i will defintly tune it this time i thougth i knew all my **** but relized i got alot more to learn hahah thnx for the help cant wait to put my w7 in i miss my basssss. going from 3 w6s to a stock bloseeee sub was torcher haha
I bet it was a rough change

Some great reading that I suggest to those who want to learn more is http://www.bcae1.com/ Lots of good and TRUE information on every topic.
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