14 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHBose amp has (almost) no sound
Leading reported evidence
Disconnect speakers beside the rear seats
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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Discussions that performed work without a confirmed outcome
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Performed · outcome unconfirmed
I disconnected the speakers beside the rear seats.
Leading evidence: 'Disconnect speakers beside the rear seats' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'amp as you suggested' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Check ground' (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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Performed · outcome unconfirmed
I installed an Alpine MRVV500 ($350), but that was five years ago.
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.
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
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Performed · outcome unconfirmed
My power amp (2003 C2; since replaced) doesn't have any markings on it.
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 performed work without a confirmed outcome
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Performed · outcome unconfirmed
I�ve already replaced the head unit with a pioneer AVIC.
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Discussions that suspect a cause
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Suggestion
I have an 02 996 with the exact same issue - radio sound cuts off and is replaced by a clicking noise from the speakers - curious if you were able to track down the cause.
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.
14 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.
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Generation: 20261026T113718Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
The Bose amp in my 02 C2 will sometimes be ok, other times it will just play a faint clicking sound, but no music. There is no be pattern to when it acts up. It may go months without a problem and then go out for a day or two. My aftermarket sub amp always comes on and plays and I also have a different headunit than when the problem first occurred. Any ideas what the problem could be?
Is this the power amp? And are you sure it is a Bose product? The head unit in the CDR23 "MOST" system is a Becker product. My power amp (2003 C2; since replaced) doesn't have any markings on it. I have real doubts that it is a Bose product. My guess would be Becker. Without going off on a tangent about speaker quality, I think the only Bose products in that system are the speakers.
My advice would be to upgrade the power amp.
My car has Bose speakers so I assumed it was a Bose amp. It's just the one I've usually seen in pictures of the frunk. I might upgrade the amp, but I want to see what others have experienced before I do that.
I have an 02 996 with the exact same issue - radio sound cuts off and is replaced by a clicking noise from the speakers - curious if you were able to track down the cause.
thanks.
Kevin B
And I have to correct my earlier post, which was wrong. The CDR23 head unit is a Becker product, but it plays into a Bose amp. I recommend replacing both. IMO they are the weak link in that system, not the speakers. This opinion may be a minority view.
The BOSE amps experience the same problems as the HAES and Nokia amplifiers on these cars. Unlike the head unit, the amplifiers are exposed to higher levels of moisture which in turn negatively affects the life of the amp over time more so than amps that are located in a more climate-controlled area of the car. IMHO, your amplifier could be giving you a sign it's time for a replacement. That's what I experience on BOTH of my Porsche 996 cars.
Thank you guys for taking the time to reply. It is likely the amp as you suggested. I�ve already replaced the head unit with a pioneer AVIC.
Do you have a recommended amplifier replacement? I don�t have any plans on switching out the speakers.
Thank you.
Kevin B
1. How is the head unit connected to the power amp? What happened to the dreaded MOST harness?
2. I installed an Alpine MRVV500 ($350), but that was five years ago. Most power amps have 5 channel output, with the sub output needing 2 ohms of resistance. The "sub" in the CDR23 coupe involves two downward firing 5 1/4" drivers, each of which provides one ohm. Those two drivers are wired in parallel, which works fine with the stock power amp. If you upgrade to a unit that has a 2 ohm sub output, have the sub drivers re-wired in series, and the resistance will match. You will be "short" two power outputs. I disconnected the speakers beside the rear seats. They are not missed. Have someone who knows what they are doing get the crossovers dialed in, and you should be pleased with the result.
