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YOUR RESEARCHC4S Frunk amp install?
Leading reported evidence
Use frunk liners and put your originals away
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Performed · outcome unconfirmed
Find a set of used frunk liners and put your originals away.
Leading evidence: 'Use frunk liners and put your originals away' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'best location' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Replace factory stereo it didnt have' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Suspected cause · Original poster
Good news is that this is probably the best location for the new amp.
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Suggestion
There was no drilling through the bodywork and since I was replacing the factory stereo it didnt have to interact with anything existing.
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Suggestion · Original poster
Before that I'll test the wiring connectors first to check that I've got
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Suggestion · Original poster
I’m planning on using the factory cables and splicing into it.
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Suggestion · Original poster
With the fuel tank the other side of the wall, installation might be tricky so I'm thinking of carefully drilling the 4 mounting holes and then using rivnuts to give me a place to bolt the amp onto the wall.
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Hey all. I'm trying to work out where to position a 5 channel amp in the frunk of my C4S. It's too big to fit where the CD changer was, which is very annoying. So I'm left looking for alternatives. The top choice currently is vertically on the wall inside the frunk. With the fuel tank the other side of the wall, installation might be tricky so I'm thinking of carefully drilling the 4 mounting holes and then using rivnuts to give me a place to bolt the amp onto the wall. Could this work or will I create problems for myself by drilling through that wall? I don't really want to drop the fuel tank if I don't have to. Are there other options? Any thoughts are welcome.
I would definitely not advise drilling into the wall that surrounds the fuel tank housing. Normally, the factory amp is mounted on the side with the C4S. Can you not repurpose the mounts? Could you please share some pictures of your project? How do you plan to interconnect with the factory wiring? Harness?
I dont have a good pic of my car available but back in the early 2000's I had the amp installed in the bottom of the frunk. It was a large amp (probably 3" 'tall/thick' x 17" x 9") and powering the subwoofer built to place in that spot behind the rear seats and just a very "low visibility" install.
There was no drilling through the bodywork and since I was replacing the factory stereo it didnt have to interact with anything existing. Once you remove the carpet you should find some holes that will feed wiring through existing holes and you can mount the amp to some backer plates/board underneath the carpet and clamp it all together, it's not going anywhere. editing to add- the advantage of mounting it on the bottom of the frunk is that you're not fighting gravity and it's working with you to keep it in place, that said mine was a C2 and I'm not sure if C4 has the same amount of space.
I was still able to get suitcases and stuff in the frunk with no real loss of space.
Thanks but the C4 and C4S have the wheel at the bottom of the frunk so this isn't really possible.
That is definitely what I'm after. What amp is that, aside from being an Alpine?
I put mine where my CD player was, found a nice amp, JL Audio, XD700/5, it's a small "smart" amp that monitors temperature, and if it is overloaded it lowers the power. If you listen to 1-2 songs loud, it's no big deal, it isn't really going to heat up.
Unfortunately not. There's the small space where the Bose amp goes and then the aircon canister and plumbing. I'll remove them again and take some pics at the weekend.
Update to this. I found the larger Bose amp. For reference in UK RHD cars it's in the wheel well. Good news is that this is probably the best location for the new amp. Bad news is as my new amp is wide/tall I'll have to cut the frunk base to do it. Before that I'll test the wiring connectors first to check that I've got
Just noticing your amplifier has the BLUE connector. I assume this is a Cabriolet? Are you planning on splicing the cables or sourcing a wire harness for the factory ISO connectors?
Mines a coupe, definitely not a cab. I’m planning on using the factory cables and splicing into it.
The only speaker I can’t find the output for is the rear sub. I suspect that there’s a 2nd amp somewhere for it, either the small one on top of the fuel tank or in the lower centre console. Hopefully the former as it will make using it much easier 🤞
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