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Upgrading c4 sound system

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Old May 2, 2023 | 02:14 PM
  #1  
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Default Upgrading c4 sound system

Hey guys, so just found out my rear passenger amp is shot. I currently have a sony head unit (XAV-AX5500) and a 10” rockford fosgate sub with a single channel amp.

My question is multiple parts first off whats the voltage and amps the stock amps are rated for?
Is it in my best interest to replace the amps with a 4 channel and power aftermarket speakers or can the stock ones power good aftermarket speakers?
And how much will these amps cost?

Also side note im making a customer fiberglass subwoofer if anyone is interested I will make a post when its complete with the journey.
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Old May 3, 2023 | 07:34 PM
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Originally Posted by jon55380
Hey guys, so just found out my rear passenger amp is shot. I currently have a sony head unit (XAV-AX5500) and a 10” rockford fosgate sub with a single channel amp.

My question is multiple parts first off whats the voltage and amps the stock amps are rated for?
Is it in my best interest to replace the amps with a 4 channel and power aftermarket speakers or can the stock ones power good aftermarket speakers?
And how much will these amps cost?

Also side note im making a customer fiberglass subwoofer if anyone is interested I will make a post when its complete with the journey.
If you need the original amp, let me know. I've got one I just pulled from my track car
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Old May 7, 2023 | 08:27 AM
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Originally Posted by 1Eyed Willie
If you need the original amp, let me know. I've got one I just pulled from my track car
thanks for the offer! I actually decided after a ton of research to replace the rest of my system completely (4channel amp and 4, 6.5” speakers).

I will probably be selling the rest of my stock bose system that works for anyone that sees this.
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Old May 9, 2023 | 05:18 PM
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Default Sorry to highjack your thread

I am trying to sort out the aftermarket stereo system someone installed on a 1989 convertible I picked up last year. When i bought the car the system was unhooked from the battery and all the speakers looked like Fred Flintstone installed them. I started chasing some wires until I discovered the spaghetti mess of wires and relays under the driver dash kick panel. I decided to just leave that mess alone and focus on chasing the headunut connections to the speakers in the doors and rear deck to the amp.

I was able to get it working somewhat but clearly the system was overpowered for the speakers. I replaced the door speakers and got decent sound but could not turn it up without distorting everything. I then tried replacing the rear speakers and another 4 channel amp I had over the weekend. The amp turned on for about 5 mins then shut off and I could not get it to work. I reinstalled the old amp thinking it would work but still no power to the amp.

I chased the main power wire from the battery after confirming the remote wire was sending power to the amp and discovered a 60 amp fuse blown. Im not an electrician but I don't know how I could has blown that size fuse doing what I did. Everything was unhooked from the battery when I swapped amps.

Any ideas on how that fuse got toasted so I don't do it again with the replacement fuse?

Sorry to highjack but I literally have zero stereo install knowledge!!!

Ted
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Old May 9, 2023 | 07:13 PM
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Originally Posted by tfvesquire
I am trying to sort out the aftermarket stereo system someone installed on a 1989 convertible I picked up last year. When i bought the car the system was unhooked from the battery and all the speakers looked like Fred Flintstone installed them. I started chasing some wires until I discovered the spaghetti mess of wires and relays under the driver dash kick panel. I decided to just leave that mess alone and focus on chasing the headunut connections to the speakers in the doors and rear deck to the amp.

I was able to get it working somewhat but clearly the system was overpowered for the speakers. I replaced the door speakers and got decent sound but could not turn it up without distorting everything. I then tried replacing the rear speakers and another 4 channel amp I had over the weekend. The amp turned on for about 5 mins then shut off and I could not get it to work. I reinstalled the old amp thinking it would work but still no power to the amp.

I chased the main power wire from the battery after confirming the remote wire was sending power to the amp and discovered a 60 amp fuse blown. Im not an electrician but I don't know how I could has blown that size fuse doing what I did. Everything was unhooked from the battery when I swapped amps.

Any ideas on how that fuse got toasted so I don't do it again with the replacement fuse?

Sorry to highjack but I literally have zero stereo install knowledge!!!

Ted
no worries on the hijack, im literally in the middle of re doing my system atm.

as far as the fuse I would definitely sort out the wire cluster first if you haven’t already. My guess would be you have a frayed wire or something not wired up correctly.

Im also not the best at wiring but fuses dont typically blow unless subjected to an unusual circumstance. At my work where we have many simple wires its usually a frayed wire touching something it shouldnt be that causes a fuse to pop.

also check the fuse size recommended for your sub. For my 4 channel im installing it calls for a 70amp fuse, i doubt thats your problem but itd be good to have the proper size anyway.


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Old May 10, 2023 | 02:38 PM
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Hi Jon. Hope you are getting your sound system sorted without too much headache.

I cleaned up and tightened the power connections on my aftermarket system before I installed the new 60 amp fuse. Viola! Power was restored to the amp so now i had to reattach the speaker wires. The original amp hook up only had four speaker ports that had both fronts crammed into one port( 4 wires) and both rears crammed into a single port (4 wires)

I separated each speaker and used all 4 ports, one for each speaker. My sound was restored but it soundz like complete sh*t. I tried adjusting the settings on the side of the amp and it made it slightly better but the bass is overwhelming even with the headunit on 0 bass.

Am I missing something? I am plannjbg on removing the rear speakers to resucure them in the floor enclosures which are rattling and vibrating lile crazy.
I also read about installing RCA filters for the connectors from the headunit to the amp.

Any suggestions from those members who actually know how to properly install an aftermarket system would be awesome.

Thanks Jon!!

Ted
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Old May 10, 2023 | 03:50 PM
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Got any pictutes of things? Like the amp connections and a good description/diagram of wire colors to each speaker. And how are you comimg from the head unit to the amp - hi/speaker level or RCA?
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