Guys i have a Kicker 12" L7 running on a JL 500/1 amp. This is the second sub that started popping. This one just started and it smells. What could be causing it to blow?

 

how is it wired ? gain setting etc.... more details please.

 

have your amp checked, there might be a short that's causing a surge to blow the sub

 

the sub is wired parallel, its a 2 ohm sub. should it be wired this way? im not sure what the gains are at off the top of my head, ill have to look. What should the gains be like? Running this off an alpine cda9813

 

your neg and pos wires r back word thats y its blowing

 

from the amp to the sub

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by src-rider &raquo;</TD></TR><TR><TD CLASS="quote">from the amp to the sub</TD></TR></TABLE><TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by src-rider &raquo;</TD></TR><TR><TD CLASS="quote">your neg and pos wires r back word thats y its blowing </TD></TR></TABLE>


wouldn't cause it to blow, it would just cause it to run out of phase.

check your wiring again, or make a zero signal loop out of an rca and see if your amp is screwed and sending out signal.

 

he said the amp works if it works then its shold be sending a signal


are u over powering backword??

 

my homie owns a audio shop ill ask him

 

1. Check your ground 2. are you bridging your amp? 3. IS this sub a svc or dvc?
if it's dvc you could be burning out one of your voice coils. Running the dvc sub parrallel means your running the sub at 1 ohm. therefore your amp is pushing max power. Either turn your gain down lower or wire the sub in series.

 

If the sub is a dual voice coil 2 ohm sub and like you said, you have it wired in parallel, then it is running at 1 ohm. I don't know if this could cause the probems you are having, but JL amps are supposed to run between 1.5 and 4 ohms, 1 ohm being too low.

 

check sub wiring, check grounds, check amp for shorts.

 

did u break the subs in? solo's need to be broken in, like teh manual says, but u dont have to do it for as long as they say, but they should be broken in

 

99.999999 percent of the time someone is blowing subs it is because the gains are set too high. They should be set at NO MORE than 80% max. This can be hard to judge, so if you want to be safe just turn it 3/4 of the way which is a little easier.

 

ummm...from what i get...a jl audio 500/1 amp SHOULD NOT blow an L7 easily...i've had a 1501bd (1500wx1 fosgate) amp pushing a power hx2 for a WHILE now...haven't blown it yet.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by troublecodes &raquo;</TD></TR><TR><TD CLASS="quote">ummm...from what i get...a jl audio 500/1 amp SHOULD NOT blow an L7 easily...i've had a 1501bd (1500wx1 fosgate) amp pushing a power hx2 for a WHILE now...haven't blown it yet. </TD></TR></TABLE>

the JL 500/1 can blow the L7 easily. Remember, at full tilt the JL is able to produce a bit over 600w RMS. Take a look at the L7's coil. A 2" diameter with about 1.6" inch of winding height. Now take a look at the Power HX2. It uses a HUGE (bigger than most) 4" coil diameter with about 1.8" in winding height. The Power Hx2 has almost no power compression compared to the L7.

Now how much power the subs are actually seeing is another story

 

Power is almost never what blows subs, its distortion. This is why people blow subs more with smaller amps than larger ones. To get more sound out people crank the gains, which causes the amp to output distortion. Once an amp is asked to put out more than 80% its output power the power supply begins corrupting the signal with distortion. Trust me man, I've seen it a thousand times and then some.

 

we *thinks* its distortion, but its really not. It's the extra power that kills the speakers. Speakers are transducer. They do not recognize distortion. Distortion is a form of signal. Many, i dare say over 90%, of the music produced today have distortion added to it. Why? because thats what the consumers like.

You increase distortion the more you crank up the volume ****, if you hear it or not.

When you clip the amp, the amp will try to produce more power than it's suppose to make. Amps can produce as much as over 2x the power when clipped.

Underpowering, distortion, clipping, etc are all myths. They just seems to be presented when the speaker blows. Kinda like people saying 15's are *slow*, when infact people just don't have the right enclosure, drawing them to an absurb conclusion.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GSteg &raquo;</TD></TR><TR><TD CLASS="quote">we *thinks* its distortion, but its really not. It's the extra power that kills the speakers. Speakers are transducer. They do not recognize distortion. Distortion is a form of signal. Many, i dare say over 90%, of the music produced today have distortion added to it. Why? because thats what the consumers like.

You increase distortion the more you crank up the volume ****, if you hear it or not.

When you clip the amp, the amp will try to produce more power than it's suppose to make. Amps can produce as much as over 2x the power when clipped.

Underpowering, distortion, clipping, etc are all myths. They just seems to be presented when the speaker blows. Kinda like people saying 15's are *slow*, when infact people just don't have the right enclosure, drawing them to an absurb conclusion. </TD></TR></TABLE>

Really? I guess that's why people can easily blow speakers with power ratings of 5 TIMES of their amp , because the amp is putting out 2 times its rated power. So all the people with Phds who are all telling me otherwise must all be part of a conspiracy to get people to buy bigger amps huh? Listen, no offense, but what we are calling distortion is technically called destructive interference and it is very different from the "distortion" in music. Clipping is not a myth, signal corruption at the clipping point is easily verified with the right instruments.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rochesterricer &raquo;</TD></TR><TR><TD CLASS="quote">

Clipping is not a myth, signal corruption at the clipping point is easily verified with the right instruments.</TD></TR></TABLE>

0wned by rochesterricer...

Your getting Musical distortion mixed up with Signal/Power Distortion

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">Underpowering, distortion, clipping, etc are all myths. They just seems to be presented when the speaker blows.
</TD></TR></TABLE>

The clipping distortion is actually the tops and bottoms of the frequency waves being squared out or becoming constant for small moments in time. This results in a DC waveform for a few moments. Although this power is quite a large amount, it is usually also of high frequency. Underpowering and clipping + distortion are all really the same thing. Your right, people throw the terms loosely (underpowered with too much gain causing distortion and output on your amplifier channels).

-Shane

 

Wow, never thought I would own as a trial user. Thanks for backing me up with the excellent description. I joined H-T because it seemed to have a lot of people like you who know what they are talking about. Hope we can dispell all those myths about myths.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rochesterricer &raquo;</TD></TR><TR><TD CLASS="quote">Wow, never thought I would own as a trial user. Thanks for backing me up with the excellent description. I joined H-T because it seemed to have a lot of people like you who know what they are talking about. Hope we can dispell all those myths about myths.</TD></TR></TABLE>

Well that's the cool thing about honda-tech - Your not really here to "own" but to make sure that anyone that reads whats going on in a thread learns something and then hopefully shares it to someone else.

FYI - gsteg is one of the guys that regulars here and is FULL of info so he's also only trying to help...honda-tech is a community, except more recently with alot of people talking crap on the board. You can still learn though.

Keep it up and enjoy your stay here
- Shane

 

wow, havent even looked at this thread in awhile. Anyhow, i sent the sub back, and waiting the arrival of the new sub. What do you guys recommend running this 1 12" L7. It will be running off a JL 500/1 .