mattman said:
At a guess - bad connections, soldering, running power alongside RCA's...
Ditto
You're not the first one to have a dodgy install from the retailers and you certainly won't be the last.
If your father wanted you to get it done properly, then take it to a respectable car audio specialist and get recommendations from other people. To do something properly, you need to research first.
As examples, I have two friends, both don't know anything about car audio except playing it loud. Both have $3000 systems in their car which I happily offered to install for them for a small payment of a slab of beer. Instead both of them (at different times) did their installs at JB and Strathfield.
One of my mates had his done at JB which installed the amps on the roof of the boot (under the shelf/rear speakers) with strange plastic clips and cable ties! You can imagine what happened next when after a few months and plenty of road bumps later, one amp came un-done and fell off. It survived but I question it's quality now and the other amp is hanging on for dear life. They also cable tied the power wire to the ABS cables and did a shocking job of looming the power cable through the side doors, some of it was hanging out under the plastic! Anyways, I tidied everything up, fixed the looms at the battery/firewall/side doors, tested the dropped amp (seems okay), mounted the amps properly on the sides of the boot where there is just a nice plate of metal to mount them on and ground them with the shortest cable.
The other friend had similar problems from Strathfield but on top of that he had a dodgy HU to start with anyway so that was replaced under warranty. Besides the dodgy install, the system sounds like 5hit because he doesnt know how to equalize the system to project a nice sound (not just the smiley face setup..) it sounds flat and tacky but he plays it loud anyway...
And this is coming from a guy that did music (acoustic/electric/bass guitar) in high school!!
...derr
He still hasn't let me fix the install yet so I guess people are actually content to pay $3000 + intall fee and have a horse 5hit system.
I'll never understand the world...