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Speaker upgrades

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Original source
3 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHSpeaker upgrades

Leading reported evidence

Use boston acoustic 4" coaxials in the rear

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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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 performed work without a confirmed outcome
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.

Performed · outcome unconfirmed

I used Boston Acoustic 4" coaxials in the rear.

Speaker upgrades
Frequently discussed work

Replace stock speaker

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

I went with the MB Quart seperates up front and put the 5 1/4" in the door and the tweeter in the dash, replacing the stock speaker.

Speaker upgrades
Read full discussion summary

Leading evidence: 'Use boston acoustic 4" coaxials in the rear' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace stock speaker' (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.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

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1 matching discussions · 3 captured posts examined · 0 partial discussions

Compare 1 other evidence results

Replace stock speaker

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

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 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

I went with the MB Quart seperates up front and put the 5 1/4" in the door and the tweeter in the dash, replacing the stock speaker.

Speaker upgrades
Frequently discussed actions (2)

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

Replace stock speaker

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

I went with the MB Quart seperates up front and put the 5 1/4" in the door and the tweeter in the dash, replacing the stock speaker.

Speaker upgrades

Use boston acoustic 4" coaxials in the rear

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
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.

Performed · outcome unconfirmed

I used Boston Acoustic 4" coaxials in the rear.

Speaker upgrades
Coverage and how to read this overview

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.

3 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.

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

Generation: 20261026T133652Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I want to start upgrading my stereo system but want to do it in stages. First, I want to get MB Quart speakers installed. Can I just drop them in or is there some proprietary problems with the porsche stereo system. I have the HIFI system with the speakers in the doors. Basically, Can I just get the new speakers and drop them into the stock locations without any problem and wire them up to the stock system? Final question is what sizes do you all recommend. Other posts say 5.5 or 6.5 inchers in the door 1 inch tweeters and 6 inch coaxials in back. SOund good? Bob

POST 2Original post

The 6" coaxials will not fit in the back without modification. Get a 3 way component system for the front and a decent amp to power it with. 3 way components consist of a separate tweeter, 4" mid, and 6.5" bass driver. The 6.5" driver will fit behind the stock door enclosure though the shop will have to fabricate a baffle to mount the speaker on (not expensive). The 4" and tweeter can easily fit into the dash,though I am not sure if it is an exact drop in. Take a look at the JL Audio XR-653cs... Focal and Quart have similar designs. The rear speakers are the same as the dash, but I would not mess with replacing them... they are not heard anyways. If you just have to do it, just go with a 4" coaxial for fill.

POST 3Original post

Bob, I have the same car and just recently overhauled the entire system. The door speakers in the '99 with Hi-Fi are 5 1/4", and the seperates in the dash are 4" mid and 1" tweeter, same for the rear. I went with the MB Quart seperates up front and put the 5 1/4" in the door and the tweeter in the dash, replacing the stock speaker. I used Boston Acoustic 4" coaxials in the rear. If I had to do it again though I would go with Boston seperates in the front as well, but that's just MPO. Had a custom subwoofer enclosure built by www.caraudioinnovations.com in Cally. Everything looks stock when completed, except for the Alpine head unit anyway. If you would like some pictures, send me a PM with your e-mail. Mike

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