Planet-9

Add extra speakers at the back of the car

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YOUR RESEARCHAdd extra speakers at the back of the car

Leading reported evidence

Install subwoofer and everything

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Performed · outcome unconfirmed
It has a factory-installed subwoofer and everything.
Original post Read captured discussion
Add extra speakers at the back of the car

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Check would probably be

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Suggestion
I was discussing this with another user, but the only way to check would probably be to look at the back of the head-unit at the speaker plug and see if the wires are present on the plug.
Original post Read captured discussion
Add extra speakers at the back of the car

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Leading evidence: 'Install subwoofer and everything' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check would probably be' (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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Check would probably be

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Suggestion
I was discussing this with another user, but the only way to check would probably be to look at the back of the head-unit at the speaker plug and see if the wires are present on the plug.
Original post Read captured discussion
Add extra speakers at the back of the car

Run rear speakers

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Suggestion
The headunit can run the rear speakers on its own, so it shouldn't be difficult to add rear speakers if you run the wires from the speakers to the plug.
Original post Read captured discussion
Add extra speakers at the back of the car

Run wires

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Suggestion
The headunit can run the rear speakers on its own, so it shouldn't be difficult to add rear speakers if you run the wires from the speakers to the plug.
Original post Read captured discussion
Add extra speakers at the back of the car

Use existing setup (without additional amps wired up correctly)

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Suggestion
If by "add" you mean retain existing speakers and add more, then I wouldn't recommend using the existing setup (without additional amps wired up correctly).
Original post Read captured discussion
Add extra speakers at the back of the car

Frequently discussed actions (6)

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Check would probably be

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Suggestion
I was discussing this with another user, but the only way to check would probably be to look at the back of the head-unit at the speaker plug and see if the wires are present on the plug.
Original post Read captured discussion
Add extra speakers at the back of the car

Install subwoofer and everything

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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Discussions that performed work without a confirmed outcome: 1

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Performed · outcome unconfirmed
It has a factory-installed subwoofer and everything.
Original post Read captured discussion
Add extra speakers at the back of the car

Run rear speakers

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion
The headunit can run the rear speakers on its own, so it shouldn't be difficult to add rear speakers if you run the wires from the speakers to the plug.
Original post Read captured discussion
Add extra speakers at the back of the car

Run wires

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
The headunit can run the rear speakers on its own, so it shouldn't be difficult to add rear speakers if you run the wires from the speakers to the plug.
Original post Read captured discussion
Add extra speakers at the back of the car

Use existing setup (without additional amps wired up correctly)

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
If by "add" you mean retain existing speakers and add more, then I wouldn't recommend using the existing setup (without additional amps wired up correctly).
Original post Read captured discussion
Add extra speakers at the back of the car

Use rear speaker holes

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Suggestion
Just a quick question, I have the basic speaker system on my cayman S but with PCM and I was wondering if I can use the rear speaker holes to fit extra speakers.
Original post Read captured discussion
Add extra speakers at the back of the car

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Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

7 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

Planet-9: 1 discussions

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Generation: 20261026T190023Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

Hi everybody. Just a quick question, I have the basic speaker system on my cayman S but with PCM and I was wondering if I can use the rear speaker holes to fit extra speakers. Does anybody know if it's prewired and if the PCM unit can cope with 2 more speakers? Or is it a different hardware altogether? Many thanks! Jerome

POST 2Original post

Be carefull because the bose speakers (assuming you have them) are 4 ohm speakers. Almost every speaker on the market are 8 ohm speakers. What that means is that your amplifier will have an impedance mismatch (read: not good). You cant simply "add" speakers as you are implying (or I perceive). If by "add" you mean retain existing speakers and add more, then I wouldn't recommend using the existing setup (without additional amps wired up correctly). If by "add" you mean "replace," there are a few 4 ohm replacement speakers out there, gut I haven't tried any. I'm sure you could by a 4 ohm to 8ohm converter, but the added noise in the system plus the lossless phase transfer wouldn't probably sound good (slight echo). I'm sure others on this board know about what you can do to make your CS sound better and I'm sure others have put different speakers in it. I have another car (CTS-V) that has a bose setup and it sounds awesome!! It has a factory-installed subwoofer and everything. It takes up the whole back lid. This CS just sounds bad Sorry. There is a bass mod out there which you can find and it will sound a little better. If you read the posts on this site, many folks try to upgrade what they can hear, not hearing what they play. Good luck.

POST 3Original post

I believe he said in his post he had the basic system; that's the front only 6 speaker system, non Bose and non sound package plus amplified. Also the Bose speakers are 2 ohm and car speakers are normally 4 ohm. As far as if the rears are pre-wired, I'm not sure. I was discussing this with another user, but the only way to check would probably be to look at the back of the head-unit at the speaker plug and see if the wires are present on the plug. If you search one of the AVIC install threads, you can see what pins are the rear speaker cables. The headunit can run the rear speakers on its own, so it shouldn't be difficult to add rear speakers if you run the wires from the speakers to the plug. Good luck.

POST 4Original post

Many thanks for your replies, I'll remove the rear covers to see if there is cables and look at the head unit as well. Cheers Jerome

POST 5Original post

Suneet, You are correct. usual home speaker: 8 ohm usual car speaker: 4 ohm Bose car speaker: 2 ohm Sorry for the confusion. I *knew* that they were half of the "normal" market speakers out there. Now...if you can get text on my PCM from my iPhone ipod (latest post) then I I'd be very happy lol.. I actually did make a contribution as well.

POST 6Original post

Hi Jerome, I am interested in knowing what you found. Are there wires in the hole? What type of wire is it? Did you find any speakers that will fit and work? Thanks! Michele

POST 7Original post

Ab-so-lu-te-ly nothing, no wires. Sorry Michele.

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