Car Audio Advice from the Audio Gurus: Use "Search thread" before posting a new Q!

[DerAlte]

Originally Posted by gigy

... just learning things the hard way. ...

THat's what a master does, right?

Originally Posted by gigy

... no fault codes of input short. ...

Huh? Input short is anyway not a fault, output short is. Did you try chalu 'grounding input with finger' test like the PA guys do? Connect speakers, damp your forefinger and place across an RCA socket! A loud brrrrp indicates amp health.

[gigy]

Tried that fingering method but no response. put in a sony 222 for the time being for the fronts only and its working fine.

[DerAlte]

Uh-oh! Needs more analysis. Try one of these Kenwood authorized service centers.

[greenhorn]

I was trying to set the gain in my KAC 5203, but for some reason, it remained constant. tried it with my nail, then a knife, then a screw driver, couldnt get my sub to go any louder.
Finally i hurt my finger in the process, dont know how, and then my amp started playing loud and clear.
Is my amp a vampire? or is it just a simple case of a sadistic amp?

Anybody know why ?

Disclaimer : PJ alert

[jithudigitised]

maybe its the green ghost.

is the gain and input sensitivity same ?

Asking coz, i have also the same amp powering my illusion electras.

[govigov]

really wierd issue with my amp/sub/ or dont know what. when i plug in one of the rca cables(all the other 3 are already in). this is for the sub(ch3) the sub goes all booomy and shudders to al its glory. it does not matter what volume, as long as the hu is turned on it does this. now i am not able to listen to any songs at all as the whole system is a mess. any ideas?

[DerAlte]

Originally Posted by greenhorn

... Is my amp a vampire? or is it just a simple case of a sadistic amp? ...

C. None of the above!

The slider of the amp pot has come loose with all you unconventional tools. Must have got deflected and was not making contact properly. Take a conventional screw-driver with a tip wide enough to sit in the slot, jiggle that plastic part a little bit, softly turn it all the way CCW and CW a couple of times checking the effect, and then set it where you want it.

Originally Posted by jithudigitised

...is the gain and input sensitivity same ?...

Yes.

Originally Posted by govigov

... this is for the sub(ch3) the sub goes all booomy and shudders to al its glory. it does not matter what volume, as long as the hu is turned on it does this. ...

Are you sure the RCA cable are connected correctly, i.e. L to amp L ... Sub to Sub amp channel? If so, is the sub channel gain set properly at the amp or is it at full on? Check once again.

Also check if the outer terminal of the connector at each end of the sub cable is actually connected to the cable. Remove the cable at both ends and check continuity with a multimeter, especially after jiggling the connector & cable around a bit. One end open might result in the amp whole-heartedly amplifying white noise also.

If everything is fine outside the HU, the HU is suspect, but I doubt if that is the case, since there are no electro-mechanical components in the HU to go loose (other than the RCAs connectors).

[govigov]

ok that issue is sorte3d out. now have sdjusted the gain as per the voltmeter setup. but it is real flat now. as in it used to sound great now it is plain flat. help? may be there is something wrong with hpf/lpf settings.

edit: what is this pink/white brown noise? how do i use that to tune the system?

[DerAlte]

What are the settings on HPF for main components, and LPF for sub?

I presume 'plain flat' means you are not getting the punch any more. Perhaps the HPF is set too high (120 or more) and LPF too less (65 or something). Ideally both should be the same, i.e. around 80.

[greenhorn]

Originally Posted by DerAlte

C. None of the above!

The slider of the amp pot has come loose with all you unconventional tools. Must have got deflected and was not making contact properly. Take a conventional screw-driver with a tip wide enough to sit in the slot, jiggle that plastic part a little bit, softly turn it all the way CCW and CW a couple of times checking the effect, and then set it where you want it.

In a way, DerAlte is right. It is none of the above, including DerAlte's technically correct explanation. Well, the correct answer is much simpler

No Pain, No Gain

[gigy]

Thanks for the numbers. the chakala guy's numbers have changed. colaba guy is available, have to take the amplifier there though. will repair and sell it off as its too big for a safe install.
i have called for blau 5 channel as its small, can be mounted behind the lpg tank, the only safe place to prevent any damage.

[DerAlte]

Originally Posted by greenhorn

... Well, the correct answer is much simpler ... No Pain, No Gain

Ahem! What / who was the real culprit?

Originally Posted by gigy

... i have called for blau 5 channel as its small, can be mounted behind the lpg tank, the only safe place to prevent any damage.

THA555? How much are you getting it for and from where?

Careful around the LPG tank, baba, take extra precautions to prevent sparks! Use crimp-type wire lugs on all wires, with heat-shrink tubing leaving only the tip that goes into the sockets. This will prevent frayed edges causing problems. Allow decent bending radius on turns, and use cable stays to firmly fix the cables in place

[jithudigitised]

Can anyone help me with the Aux In input of my Pioneer DEH P4850MP.

The case is that, i want to connect my usb/iPod/mp3 player to the said HU.But since it doesnt have any slots,i am looking at the Aux In option(HU has a IP bus connector in the back panel with ipod support, it seems).

After a lot of googling i find out that,a IP bus connector(or adapter) is needed.BUt i am not that much convinced about how to use that.

Will using the connector solve my problem,if yes,where to get the adapter.

[greenhorn]

If you're willing to be a guinea pig for this
Gutterslide.com - Pioneer IP-BUS Hack
I'm ready :P
I'd already thought of something similar earlier
http://www.team-bhp.com/forum/diy-do...x-adapter.html (DIY blaupunkt Aux adapter)

[jithudigitised]

If it dosnt cost me my HU, then i am ready.hehe