Rennlist

Rear passenger speaker not working

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2 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHRear passenger speaker not working

Reported or suspected cause

amp and bought a refurbished one

Reported cause

No successful repair reported for this finding.

1
Identified cause: 0
Suspected cause: 0
Reported fixes

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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that report identifying a cause: 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.

Reported cause · Original poster
Concluded it was the amp and bought a refurbished one, which solved the problem but the company sent me an amp from a Cayenne which has the same electrical/optical connectors but a different mounting style, so it doesn�t physically fit the mount location for the 911.
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Rear passenger speaker not working

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Leading evidence: 'amp and bought a refurbished one' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'amp and bought a refurbished one' (1 discussions; 1 report identifying it and 0 suggest it). 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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1 matching discussions · 2 captured posts examined · 0 partial discussions

Reported and suspected causes (1)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

amp and bought a refurbished one

No successful repair reported for this finding.

1
Identified cause: 0
Suspected cause: 0
Reported fixes

Read evidence and context

Discussions that report identifying a cause: 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.

Reported cause · Original poster
Concluded it was the amp and bought a refurbished one, which solved the problem but the company sent me an amp from a Cayenne which has the same electrical/optical connectors but a different mounting style, so it doesn�t physically fit the mount location for the 911.
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Rear passenger speaker not working

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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.

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

Rennlist: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

1 acknowledgements have no verified action link; they do not establish a repair result.

Outcome without a verified action link
Concluded it was the amp and bought a refurbished one, which solved the problem but the company sent me an amp from a Cayenne which has the same electrical/optical connectors but a different mounting style, so it doesn�t physically fit the mount location for the 911.
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No unique explicit quoted action; no causal link assigned

Generation: 20261027T020439Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I posted this in my build thread but double posting here to get more eyes and opinions. For reference, car is a 2003 C4S with Bose and MOST. Everything worked great prior to PCCM+ install - then I had zero sound. Concluded it was the amp and bought a refurbished one, which solved the problem but the company sent me an amp from a Cayenne which has the same electrical/optical connectors but a different mounting style, so it doesn�t physically fit the mount location for the 911. Now, I have been messing around with the settings in the PCCM+ and discovered that my rear passenger side speaker is not working at all. I pulled the speaker out and put my ohm meter across it, it measures at exactly 4 ohms. I then shot the wires from the speaker to the amp, they look good at 0.4 ohms. I then shot the speaker wires, with the speaker connected, from the amplifier connector side and got another perfect 4.0 ohms. My conclusion is the amp is bad - is that valid or do you guys have any other suggestions?

POST 2Original post

Swap it with the working side first. Then you can blame the amp.

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