The problem is present in my daily which is not a BMW but since the problem could occur in any vehicle I figured I could ask here.
The vehicle in question is a 2002 Maruti 800, which in simple terms is an Indian rebrand of a 1989 Suzuki Alto. I installed the system myself from start to end and it consists of:
Battery is very very small, 38Ah the car only has a 0.8L engine so it doesn't need much.
It works fine, sounds fine apart from a hum which is a single frequency with the car off and when the car is turned out the pitch of the hum matches the RPM. I've installed a ground loop isolator which solved nothing at all. I have a switch for the amplifier, when the amp is off there is no hum so the head unit in itself is fine.
I've routed all the power wiring to the left side of the car (passenger side where I live) and the amp is situated on the right side (driver side). Been living with this for over a year now and it's getting pretty ridiculous now and I wouldn't like it to happen when I set up a system in the BMW.
Any insight is greatly appreciated :)
The vehicle in question is a 2002 Maruti 800, which in simple terms is an Indian rebrand of a 1989 Suzuki Alto. I installed the system myself from start to end and it consists of:
- Kenwood KDC-5047U Head Unit
- 4 x Boschmann 4" 150w Speakers connected to the HU
- US Blaster USB1367 4-Channel Amplifier
- 2 x Clarion SRE2032R 8" Speakers connected to the Amp
- Kenwood KFC-W2512 10" Subwoofer Bridged over 2 channels on the amp
- Boss 1 farad capacitor
Battery is very very small, 38Ah the car only has a 0.8L engine so it doesn't need much.
It works fine, sounds fine apart from a hum which is a single frequency with the car off and when the car is turned out the pitch of the hum matches the RPM. I've installed a ground loop isolator which solved nothing at all. I have a switch for the amplifier, when the amp is off there is no hum so the head unit in itself is fine.
I've routed all the power wiring to the left side of the car (passenger side where I live) and the amp is situated on the right side (driver side). Been living with this for over a year now and it's getting pretty ridiculous now and I wouldn't like it to happen when I set up a system in the BMW.
Any insight is greatly appreciated :)
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