tweeters popping
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=29833
Printed Date: July 19, 2025 at 4:00 PM
Topic: tweeters popping
Posted By: hammondc
Subject: tweeters popping
Date Posted: April 06, 2004 at 3:45 PM
JL VR series separates powered by eclips 3640 4 channel amp (4X60). Tweeters popping at medium high volume. Why is this? what can I do to stop it?
Replies:
Posted By: mobile E
Date Posted: April 06, 2004 at 3:47 PM
i just got some vr seperates... havent installed the crossovers and there popping.. so thats proboably why... ------------- everything stolen :(
Workin on a new system :)
Peace in the middle east
Posted By: hammondc
Date Posted: April 06, 2004 at 3:59 PM
i had them installed at a sound shop so, if the xovers are not installed. I will be in jail soon.
Posted By: hammondc
Date Posted: April 06, 2004 at 5:11 PM
nope. the x-overs are in there. anything else? They are supposed to have a protection circuit to keep from blowing them. Ideas??
Posted By: DYohn
Date Posted: April 06, 2004 at 5:54 PM
Amplifier grounding and gain setting. Also quality of signal to the amp (RCS cables, etc.) and quality of the speaker wire to the tweeters. Are the woofers "popping" too or just the tweets?
Posted By: Teamrf
Date Posted: April 06, 2004 at 6:38 PM
Yea like Dyohn said you may want to check that ground. I've seen a lot of things go wrong because of a bad ground.
-------------
~The Rookie~
Rookie of the year that is...
Don't let the smoke out of your equiptment..it doesn't go back in.
Posted By: hammondc
Date Posted: April 06, 2004 at 6:47 PM
they only pop at loud volume. speaker wire is good. also, theRCA are ZeroNoise 3.5's by whoever makes them. think it would stop if I drop the gain on the amp?
Posted By: DYohn
Date Posted: April 06, 2004 at 8:33 PM
Chcek to make sure the ground is good and solid and is an unpainted bare metal connection to the chassis of your car. The gain should be set to match the input from the head unit. Was it set up properly, or just plugged in and turned on? Tweeters (or other speakers) making a "popping" sound can also be from overdriving them at too low a frequency. This will blow them in short order.
Posted By: hammondc
Date Posted: April 07, 2004 at 8:23 AM
I will check the ground. They have crossovers in place, so it is not a frequency issue. If that is all the power / volume that these speakers can take, I will never go JL again. I know it is good clean power. I never have been a fan of JL and this is my first experience with them. Not exactley thrilled.
Posted By: DYohn
Date Posted: April 07, 2004 at 10:00 AM
And also make sure the amplifier gain is set properly. ------------- Support the12volt.com
Posted By: sparkie
Date Posted: April 07, 2004 at 4:29 PM
Try turning the bass control down all the way on the headunit. If the popping goes away it will likely be that too much low frequency signal is being sent to the tweeters. Even with their proper crossover in place yu can still overdrive speakers. Crossovers don't completely eliminate the undersirable frequencies, but do gradually decrease their output depending on the type and order of crossover. A higher order crossover (2nd order or 3rd order) filter off frequencies quicker than just a 1st order (non-polarized capacitor) does. If this doesn't help the problem may be a result of induced noise from vehicle harnesses or components into the RCA or speaker leads. The other likely problem is that the amplifier is clipping (being overdriven). Tweeters are the first to alert you to this. They are also the first to blow up as a result because they can't take any abuse.
-------------
sparky
Posted By: mobile E
Date Posted: April 08, 2004 at 11:37 AM
still don't have the crossovers in... i lowered the gain on my amp and PRESTO, works perfectly. No popping, does sound a little in youre face, but i'm just getting started , i havent even installed the crossover, but i am listening to them very closely becasue i dont want to blow them anytime soon, but dont worry im running the stock crossover for now ------------- everything stolen :(
Workin on a new system :)
Peace in the middle east
Posted By: DYohn
Date Posted: April 08, 2004 at 11:45 AM
You are operating a set of tweeters without a crossover? I hope you like buying tweeters. Also, if you "lowered the gain and presto it works" then you did not have the gain set properly in the first place. I suggest you turn that gain all the way down and set it up properly, and install the proper crossovers for those tweeters before you go another minute with your system on. Unless, of course, you have money to burn. ------------- Support the12volt.com
Posted By: hammondc
Date Posted: April 08, 2004 at 12:22 PM
whats the process for setting gain??
Posted By: DYohn
Date Posted: April 08, 2004 at 12:47 PM
There are many ways to do it, but in general the input gain on teh amplifier must be set to match the output voltage of the head unit (or whatever is driving it.) Start here: https://www.bcae1.com/gaincon2.htm------------- Support the12volt.com
Posted By: hammondc
Date Posted: April 08, 2004 at 1:27 PM
that is like greek to me.  is there a simplified way?
Posted By: DYohn
Date Posted: April 08, 2004 at 2:10 PM
Simplified gain setting: 1. Turn off your system. Make sure all your connections and power/ground are good. Get some hearing protection on (like earplugs) 2. Set all amplifier gains to minimum setting. 3. Turn on your system. 4. SLOWLY turn your volume control on your head unit up until you begin to hear a distorted sound. This usually happens around 75% to 80% volume. (NOTE: if you get to the MAX and you do not hear any distortion, you either have a very good head unit or you do not know what distortion sounds like. If this happens, go to a professional car stereo shop for help.) 5. Turn the volume back down until the distortion goes away and the sound is clear. This is the MAXIMUM SAFE VOLUME on your head unit. Leave it here. Remember the setting and never go higher than this. 6. Slowly increase the gain on your amp until the distortion returns. Back it off until it is gone. THIS IS THE PROPER gain setting for your head unit's maximum volume. Leave it here. 7. Lower the volume on your head to normal listening levels and enjoy. Oh yea, and you can remove your earplugs. ------------- Support the12volt.com
Posted By: mobile E
Date Posted: April 09, 2004 at 12:41 PM
well i do have a crossover but its the factory one not the jl audio one, and im running the volume very low ------------- everything stolen :(
Workin on a new system :)
Peace in the middle east
Posted By: DYohn
Date Posted: April 09, 2004 at 4:46 PM
mobile E wrote:
well i do have a crossover but its the factory one not the jl audio one, and im running the volume very low
Don't do this. The manufacturer supplies a crossover designed specificly for these tweeters. A different crossover (ESPECIALLY OEM capacitor crossovers that came in the car!) is not sufficient unless it was specifically designed for those tweeters. You will blow your tweeters. If you don't care about this, then so be it, but don't say you were not warned! Also, running your volume very low does not mean the amplifier gain is set properly. Indeed, you cold still be clipping. ------------- Support the12volt.com
|