Question about Jl Audio Car Audio & Video
When connected the subs makes buzzing noise
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: jl audio E6450 cutting out
hi, have you figured out whats wrong with ur amp ...i have the same amp ....and as soon as i finished the connections ...and connect the remote on wire,,, the amp goes on ...making a ticking sound with the green light blinking and the red light staying solid on ...whats the problem please help ....how can i fix this ......my amp is a jl e6450 ....im using a panasonic cd player with a built in amp ....and thats the cd player im trying to connect to the jl amp ...please HELP
Posted on Apr 07, 2008
SOURCE: jl audio 500-5
Assuming that you've confirmed that the speaker is in good working order and that the wiring isn't shorted in any way...
There are separate power supplies for the high and low amplifiers. It's possible that the one for the sub output has failed. If that's the case, the output transistors probably failed and that's what damaged the supply.
Generally, I'm willing to help people repair their amps but this is a large, complex amplifier and it should be repaired by a qualified technician.
Posted on Apr 19, 2008
You can connect them in a series/parallel configuration. Put two of them in series and then connect the last one in parallel across the two in series. This would give you an impeadance of around 2.7 ohms. Only do this if your amp is stable at 3 ohms or less. I am not familiar with the specs of your amp. If your amp is only 4 ohm stable you can not do this.
This would also give you half the power on the two subs in series as the power for the one that is parallel. The two in series would be sharing the total output signal, where-as the one in parallel would get the entire output signal from the amp.
if you were to connect a fourth sub woofer in this configuration it could give you a 4 ohm load, by adding the fourth sub in series with the single sub that is in parallel. or in other words, yu have two sets of 2 sub woofers each in series. That gives you two 8 ohm loads (two 4 ohm subs in series is 8 ohms). Then you take the two sets of subs and parallel them (two 8 ohm loads in parallel equals 4 ohms).
If i had a picture to show you it would make sense, two subs in series that are in parallel with two subs in series.
Posted on Jun 16, 2008
if its cutting off and right back on then check your ground and your power wire makes sure both are connected good and none of your fuse's are blown, either that or you got a wire hooked up backwards in the sub.. but my guess is that the sub is hooked up wrong... that sub should be hooked up in a series or in parallel,
ok if your running just one speaker, it should be hooked up like this and 2 speakers are a different way...
this is parallel :pos to pos , neg to neg, then one wire coming from pos on sub to pos on amp then neg on sub to neg on amp but bridge the amp on your amp should be 2 pos and 2 neg in two different channels take the pos off the sub into the pos on 1 channel and then the neg from sub to the neg on the other channel,
this is series : on the sub it will go pos to neg then the other neg and pos will go to the amp, but make sure the pos and neg r on different sides of the sub, dont hook them both to the same coil
if your need more help give me your email and ill send you a pic of how to do it...
Posted on Aug 12, 2008
SOURCE: JL Audio 500/1 Amp
Do you get sound if you set it on full? If you don't get sound in any way it maybe broked. Do you smell burnt components? Is the protection light on? If so you probably have a shorted transistor inside. If everything looks normal but has no sound at all. The preamp circuit is probably not getting power due to a malfuctioning power supply circuit. The way a car amp works is it has a DC-DC converter, which steps up the 12 volts to two supply voltage. One is usually a -35V, an the other is +35V. To a totall of 70V. Power transistors don't operate efficiently on 12 volts thats why it is designed like that. A PWM (pulse width modulation) circuit which consist of a chip, and various components connected to it drives an array of Power FET(field effect transsitors) usually conected in parallel to add power. These FET drive two or more "powder iron core" transformer. The other side of the transformer is connected to large diodes, providing power to the transsistors that actually drive your speakers. The supply voltage to the section preamp section is usually the same as the battery voltage. This preamp section filter high frequency for things such as low pass, high pass etc, and through many stage of amplification using small transistor, the final stage is the large transistors that drive the speakers. If you can tell me more info I can help you with a step by step guide on fixing the amp.
Posted on Jun 28, 2009
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