Planet-9

987.2 Base with Sound Plus Head Unit Upgrade

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Original source

4 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCH987.2 Base with Sound Plus Head Unit Upgrade

Reported or suspected cause

gone

Reported cause

No successful repair reported for this finding.

1
Identified cause: 0
Suspected cause: 0
Reported fixes

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 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
Sounds better in general and most importantly the inconsistent EQ issue is gone.
Original post Read captured discussion
987.2 Base with Sound Plus Head Unit Upgrade

Frequently discussed work

Replace factory ask

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
Looked at moving to a fairly high end DSP amp to replace the factory ASK, but stumbled on a Open Box
Original post Read captured discussion
987.2 Base with Sound Plus Head Unit Upgrade

Read full discussion summary

Leading evidence: 'gone' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'gone' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Replace factory ask' (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.

Read captured replies

1 matching discussions · 4 captured posts examined · 1 partial discussions

Compare 2 other evidence results

head unit

Suggestion or failed attempt

No successful repair reported for this finding.

0
Identified cause: 1
Suspected cause: 0
Reported fixes

Read evidence and context

Discussions that suspect 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.

Suspected cause
I really thought it might be the Amp causing the issues but it was the Head Unit.
Original post Read captured discussion
987.2 Base with Sound Plus Head Unit Upgrade

Replace factory ask

Suggestion or failed attempt

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
Looked at moving to a fairly high end DSP amp to replace the factory ASK, but stumbled on a Open Box
Original post Read captured discussion
987.2 Base with Sound Plus Head Unit Upgrade

Frequently discussed actions (1)

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

Replace factory ask

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
Looked at moving to a fairly high end DSP amp to replace the factory ASK, but stumbled on a Open Box
Original post Read captured discussion
987.2 Base with Sound Plus Head Unit Upgrade

Reported and suspected causes (2)

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

gone

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
Sounds better in general and most importantly the inconsistent EQ issue is gone.
Original post Read captured discussion
987.2 Base with Sound Plus Head Unit Upgrade

head unit

No successful repair reported for this finding.

0
Identified cause: 1
Suspected cause: 0
Reported fixes

Read evidence and context

Discussions that suspect 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.

Suspected cause
I really thought it might be the Amp causing the issues but it was the Head Unit.
Original post Read captured discussion
987.2 Base with Sound Plus Head Unit Upgrade

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.

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

Planet-9: 1 discussions

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

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

Outcome without a verified action link
Unit in that worked OK but really only sounded good at fairly high volumes and the EQ really fell apart at moderate and low listening levels.
Original post Read captured discussion
No unique explicit quoted action; no causal link assigned

Generation: 20261026T113718Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

Just did the first audio upgrade on my 2011 Base Boxster . Car has the SP+ Package with the ASK Amp and 3way components in the door. Previous owner had a Boss Wireless Android Auto / Carplay Unit in that worked OK but really only sounded good at fairly high volumes and the EQ really fell apart at moderate and low listening levels. I could EQ it to sound good at 3/10 or 8/10 but not both. Looked at moving to a fairly high end DSP amp to replace the factory ASK, but stumbled on a Open Box Sony XAV-AX4000 at Best Buy of all places at a price I could not pass on. Figured I'd like to have the better Sony unit regardless and a better foundation would be a good idea before I drop big money on DSP amp and the tunig. Install took me a couple hours but was not too bad and the results are a huge step up. Sounds better in general and most importantly the inconsistent EQ issue is gone. I really thought it might be the Amp causing the issues but it was the Head Unit. The entire system sounds good throught the volume range and is enjoyable to listen to at all levels. Now I get to see if I can avoid the temptation of the DSP Amp since the sound is so much better.

POST 2Original post

Hey @phanophish , that's a great find on the open-box Sony unit, and it's interesting that the inconsistent EQ was coming from the head unit all along. Now that the sound is so much better, what specific improvements are you still hoping to get from a DSP amp? Sharing what you're chasing might help others who've been down that road offer some advice

POST 3Original post

That's my dillema. The overall system sounds pretty good now. Maybe just a bit weak on the bass dynamics at moderate levels. Call it 7 or 8/10. The system the audio shop was tuning that they demoed was a solid 10/10. Also had a high dollar component speaker setup so not really a fair comparison. Maybe the best car stereo I've heard. And well, you know how that goes. I'm going to live with it for a while and then decide. I'll probably call it good enough. But I also like tinkering and the tunability of the dsp is tempting and some are fairly affordable if I decide to DIY. Thought about chasing down the connector to build a harness to avoid cutting in to the existing amp wiring so I can just plug it in and keep the wiring 100% stock to give it a try. It also sounds like the best approach is to wire directly to the component speakers and tune the bass, mids, and tweeters independently which also means more work.

POST 4Original post

I’ll probably live with it for a while before I even think about DSP. The plug-in harness idea is mainly just to keep things reversible if I ever do go down that rabbit hole.

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