HU standby power consumption/car ground vs amplifier

[ionuutzuu]

Hello guys, it's been a time since we met last time but I kinda need your help in some of my misunderstandings.

First of all I recently bought a new Kenwood 361sd budget player and since I'm from Europe I've got the universal ISO connector which doesn't want to let me power on the player w/o having my >contact on accesories so I've took the yellow +12v from >universal ISO connector and connected it to +12v that leads to the player and its remote to be able to power on the player w/o having my key into contact. Now my player has power all the time, my question is: does it drain my battery even if I turn it off completly and I take off its detachable face ?

The second problem is with an amplifier wihch is an >u-Dimension pro x500 24comp and when I tried to mount it I burned out my RCA preouts of my old Kenwood 3057UR by an accidental touch with its radiator with the table (where was holey for screws and was a perfect contact) of the car which is all - (negative) from my battery and did a short and music was playing, music decreased intensity by volume and then recovered but after that I could hear my engine in speakers. Here are some pictures to see exactly what I'm talking about: click & click.

I don't want to burn my RCAs again so I ask you guys if is a problem if I mount the amp like >this would be any problem because amp radiator would get negative from ground by the screws ?

Thanks in advance, Ionut !

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[CrossoverOre 10+ year member]

always make sure power is off when undoing or moving connections. This will help you from killing the rca output from the stereo. As for hearing the engine through the speakers there is a lot of causes and fixes for that. Check the ground loop sticky. Does the engine come through the speakers when the amp when it is not mounted?

 

[ionuutzuu]

Well my question isn't about solving the engine sound in speakers, I just replaced the player and problem disappeared. My question is about amp mounting to not encounter this again. Can I mount it directly on the table ? Its radiator will get - from car ground, would be any problem ? Are them designed to work like that ?

 

[ionuutzuu]

I solved both problems. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

For 1st, 361SD "Complete switched off (pushing SRC button for a few seconds) uses 6,5mA" was the answer from Kenwood company so it won't drain my battery.

And for 2nd I used some plastic screws and parquet foil to avoid the contact of amp with the ground.