overdriving amp...
Thread Starter
Instructor
Joined: Mar 2016
Posts: 137
Likes: 7
From: Nebraska
overdriving amp...
Just spent this evening trying to install my new aftermarket headunit, and ran into some issues. First problem was when I hooked it all up I wasn't getting any sound, after searching some I figured out I needed to power the amp wired so I connected the blue headunit wire to the blue/white wire and re-hooked it back to the car. Got sound this time but it was all over driving to the amp and was extremely loud just being on 1 volume. What did I do wrong?
Non bose system, no navigation, no xm on my car. The new headunit is this; Planet Audio P9640B Double-Din 6.2 inch Touchscreen DVD Player, Receiver, Bluetooth, Wireless Remote
Non bose system, no navigation, no xm on my car. The new headunit is this; Planet Audio P9640B Double-Din 6.2 inch Touchscreen DVD Player, Receiver, Bluetooth, Wireless Remote
Drifting
Joined: Nov 2013
Posts: 1,503
Likes: 906
From: Tulum, MX
First thing I would do is check the gain setting on the amp. turn down to 1/4 of the way. set volume on HU to 3/4 and slowly turn up the gain till you head distortion. back gain down a tad and you should be good to go
Thread Starter
Instructor
Joined: Mar 2016
Posts: 137
Likes: 7
From: Nebraska
where is the stock amp located? Like I said, before yesterday I didn't have a clue cars without bose systems like mine still had an amp, didn't know you could change the settings either! Thabks!
Tech Contributor
Joined: May 2003
Posts: 7,035
Likes: 134
From: North Augusta, SC
The stock amp doesn't have any gain adjustments 
Another reason why you need an interface adapter.
The amp needs a line-level signal going into it (RCA connections), if you connected the speaker wires directly to the amp input wires then that's your problem.
Did you use an adapter? If you did, and it has pots on it, try adjusting them. If not, buy the C2R-GM24 you found for $30 or get some RCA fittings at Radio Shack.
Another reason why you need an interface adapter.
The amp needs a line-level signal going into it (RCA connections), if you connected the speaker wires directly to the amp input wires then that's your problem.
Did you use an adapter? If you did, and it has pots on it, try adjusting them. If not, buy the C2R-GM24 you found for $30 or get some RCA fittings at Radio Shack.
Thread Starter
Instructor
Joined: Mar 2016
Posts: 137
Likes: 7
From: Nebraska
Tech Contributor
Joined: May 2003
Posts: 7,035
Likes: 134
From: North Augusta, SC
The RP3 should have RCA plugs on it, plug them into appropriate front/rear left/right outputs on the radio and it should work fine.
In C6, ALL cars are treated like they're Bose, you shouldn't be cutting off the RCA's and attaching the speaker wires to the RP3 (as non-Bose instructions say to do)
In C6, ALL cars are treated like they're Bose, you shouldn't be cutting off the RCA's and attaching the speaker wires to the RP3 (as non-Bose instructions say to do)
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Thread Starter
Instructor
Joined: Mar 2016
Posts: 137
Likes: 7
From: Nebraska
It did have the rca jacks on it but we cut them already ;( there are no rca speaker outputs on the back of the headunit.
There's no line level audio outputs on the headunit, it's an amplified headunit. I think that may be the issue... andon't I just read in the paper that if the aftermarket radio does not have low level outputs that I'll need LOC (line out connectors?)
Simple things like this always turn out to be a pain one way or another for me...
There's no line level audio outputs on the headunit, it's an amplified headunit. I think that may be the issue... andon't I just read in the paper that if the aftermarket radio does not have low level outputs that I'll need LOC (line out connectors?)
Simple things like this always turn out to be a pain one way or another for me...
Le Mans Master
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