Ground Loop Issues

[tyusha]

To bring this thread back on track. One more thing i noticed that with the lights on (cause of alternator whine in a stock car) my whine issue through speakers worsens.

Also is the overall speaker hum coming from mids and tweets (shhhhhhh type sound as if your playing a cassete with no recording on it) as soon as the amp powers up caused by the grounding problem or not. Is it possible that using a grounding kit could help or solve the issue?
I also ordered Audiobahn battery terminal that should be here soon. Maybe that will help somewhat....

 

[1sty]

ITs unlikely that a grounding kit will help, although I did have a someone that bought my kit mentioned it did help is alternator whine issue. I could never personaly verify the claim though. My guess is that it is highly unlikely and at best it will help, it will not cure.

Have you tried a different amp or RCA's yet?

 

[tyusha]

No cause i don't have an extra amp and or RCA's. I have my old two channel amp though... But i don't think it will help.... I don't know firsty.... I am kinda cleaning stuff up slowly but surely so it's more or less presentable. I think i might come over this upcomming weekend if that is ok with you...

 

[1sty]

When ever.

 

[tyusha]

Firsty, as far as far as i remember there was asways a low level of hum trought the front speakers... Now it's just amplified i think.... I don't know. Maybe the crossovers are what is killing me. Do you have any extra passive crossovers that we could possibly swap with my LA crossovers just to check.... I am getting frustrated Firsty....

Here is the a pic of the speakers. I think the actual crossover is the worst quality piece of this set

http://images.cardomain.net/products/lit/LITB168C_1.jpg

 

[1sty]

Firsty, as far as far as i remember there was asways a low level of hum trought the front speakers... Now it's just amplified i think.... I don't know. Maybe the crossovers are what is killing me. Do you have any extra passive crossovers that we could possibly swap with my LA crossovers just to check.... I am getting frustrated Firsty....

Here is the a pic of the speakers. I think the actual crossover is the worst quality piece of this set

http://images.cardomain.net/products/lit/LITB168C_1.jpg

Whats the crossover, the disc?

I have some crossovers we can use.

I assume the crossovers are in the doors?

 

[tyusha]

the crossover is the disc with the radiation logo.... Don't ask. The crossovers are in the front pockets.... The right crossover started to rust from being inside the door

 

[tyusha]

The saga continues...

Today i recieved my Audiobahn platinum plated Battery terminal, and the scoshe kit for my new head unit. While the scosche kit is great, at least much much better then the metra kit, the battery terminal did not help anything. At first i thought it did though. With no headlights on the whine was minimal and i could swear it was not comming from the rear at all, but the fronts still hum... But with headlights on it's a completely different storry. The whine is there and as strong as it was Soooo frustrating. Also i think my front speakers are starting to fail overall (stupid LA)... I was listening to Chilly Peppers' Californication album, loudly - at about 2/3 of the volume on the headunit (the amp is at a bit higher than half the power). The speakers are rated at 75watt RMS, while my amps maximum output is mere 50Watt per channel, or about 30 - 35 watt right now. And at that low power they clearly made this clicking surging sound, which is ridiculous. I mean they aren't great speakers, but come the **** on, its 35 watts i am feeding them. So i don't know, Firsty/ Guys... It sucks. Firsty, if nothing goes bad i am planning on seeing you this Saturday. Also do you still have any of your MBQuarts for sale? I might need them

Update as of today the 31, the rear speakers do whine with the rear channel crossover on the amp turned off and do not whine with the crossover on. THIS IS FREAKING ODD!!!!!!!!!!!!!!

 

[tyusha]

bump

 

[tyusha]

(bump)

 

[tsunami]

uhhh??? mmmm??... hope firsty can help you out... sounds like you may be on the track with checking your cross overs and possibly getin some new speakers... i have a pair of these http://www.jlaudio.com/evolution/VR650CS.html though one speaker has a tear in the rubber that connects to the cone... i was told it is repairable but not sure about the sound??... or if they were right... i could take picks (would sell em to you cheap... i think i paid 3 bills for em??)

 

[tyusha]

we shall see what firsty says, cause what good will replacing one set of faulty speakers with another do.... If they can be fixed for not too much that would be awesome. I will never touch the system again as soon as it sounds decent, i am much more of a car mechanics person, although i like good sound.... So i need a speaker that will pe able to handle 50 watt per channel safely and sound good (i don't need awesome) and maybe a small sub down the line with 2 other channels of the amp bridged....

 

[tsunami]

we shall see what firsty says, cause what good will replacing one set of faulty speakers with another do.... If they can be fixed for not too much that would be awesome. I will never touch the system again as soon as it sounds decent, i am much more of a car mechanics person, although i like good sound....

once your system is set you will add some performance stuff and then start tinkerin on your sounds again... trust me... once you start its hard to just let good enough be good enough... know what i mean...?? yeah if firsty can't help you out with speakers and you guys think that its the speakers/ cross overs those are some sweet component speakers i will look into seeing if it can be repaired and what type of pwr/sound can be expected with a repaired speaker...??

 

[tyusha]

Yeah, that'll be good. However you're not right about me tinkering with that stuff. Good sound is good sound by my standarts. I have a preaty strong willpower to top it off. And plus the performance will never end really....

 

[livingsacrifice]

Ground loops are mostly caused by incorrect grounding, so I would trace back your stock headunit ground and ground it to a nice metal peice in the car or the same place you grounded your amp. I had this Pioneer deck for a while (infact still have it but its sitting in my room) and I tried everything to get it to stop, moved all the rcas to center console and grounded it to my amp, also used 2 ground loop isolators but I still had annoying alternator noise. Thats why it's sitting in my room now, I reinstalled my old deck and no problems with alt whine at all.

 

[tyusha]

Both decks stock and my new clarion cause the issue....

Lovin' your car by the way man. Here is why

 

[tyusha]

Firsty where are you man?

 

[1sty]

The more I hear, the more I think your amp is the problem.
Could be the head unit though but unlikely.

What you are hearng with the lights on/off is very common. The more the system is loaded electricly, the worse it will become.

It could be the ground, but if you have it on bare chassis metal, and you've tried a few spots, then its probably not the issue.Yeah, I still have the quarts.

I wouldn't get to held up on the power. It doesn't exactly work that way. First off its distortion that will nuke a speaker, not the clean power level. Because of this, less power is often more damaging then too much. It is very rare to see a speaker die from a clean signal, even if its at twice the speakers rated power. Also, the amps gain is not a volume, its a setting that is ment to match the amplifers gain ratio to the voltage of the input singal. So it can be at the 9 o'clock position and stll be at maximum output. Also, the 12 o'clock postition can be way to high if the input voltage is high enough, and the amp will be throwing a ton of distortion.

 

[tyusha]

i only tried one grounding point firsty, which is where the center center console attaches to the tunnel (there is a bracket there, it's attached to where the bracket is attached to the tunnel. It makes me really sad that you think the amp is the problem. Are you ok if i come up saturday morning? I wish my car was already sound deadened, but it will be deadened the next weekend....

 

[tyusha]

do you think the speakers might be going as well?
And also yeah it's not the headunit since the problem was there with the stock headunit as well.