13 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHRear speaker size upgrade
Leading reported evidence
Install "pccm clone"
Performed · outcome unconfirmed
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 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
Installed a "PCCM Clone" that has wireless CarPlay, backup camera, and sub output.
Leading evidence: 'Install "pccm clone"' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install "pccm clone"' (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.
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 also added a factory 997 BOSE powered sub that is form fitted behind the rear seat.
Install factory 997 self powered sub behind the seats
Performed · outcome unconfirmed
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 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 kept the factory 6-channel HAES amp and installed a factory 997 self powered sub behind the seats.
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
As mentioned before, I replaced the dash and rear 4" speakers with Kickers.
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
Was going to replace the 2-ohm HAES door subs, but after bench testing them, they were still in good shape.
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
With some creative engineering, you could put just about any size speaker in the back, but if you're trying to keep it stock looking and use the factory speaker ports, then that's the problem for anything larger than 4.5" speaker.
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.
13 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: 20261027T070717Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
"fit" is relative. With some creative engineering, you could put just about any size speaker in the back, but if you're trying to keep it stock looking and use the factory speaker ports, then that's the problem for anything larger than 4.5" speaker. Why? Because the speaker ports are designed for the factory speaker mounts are integral to the side panels. In fact, you have to retrofit standard 4.5" speakers to make them fit the factory design or use aftermarket adapters.
For me, I just put fresh 4.5" drivers in the dash and rear. I also added a factory 997 BOSE powered sub that is form fitted behind the rear seat. The sound is leaps better than the original stock. The OE speakers were trash when I took them out. Good luck!
So did you fit 6.5 behind the rear grills or no? I'm asking the group if you can fit 6.5 behind the rear speaker grills. If not what size did you fit with minimal modification.
Actually Teilegott is right. I wasn't thinking specifically about the exact size... it's actually 4 inch 4-ohm drivers in the dash and rear speakers mounts. 5 1/4" 2-ohm speakers in the doors. That's based on factory amplifiers.
But no, the dash and rear speaker mounts will ONLY accept the factory "tear drop" speaker design which supports a 4 inch driver and a small tweeter (if keeping it component style). Coaxial speakers work just as fine IMHO.
If you want to retrofit a 6.5" speaker, then that will take some modification to the side panel because the rear speakers do not mount to the metal side panels of the car but instead integral to the plastic interior panels.
There is room for 6.5" or maybe even 8" speakers in the location where the factory rear speakers are. You might need to move the center of the speaker a bit but the depth is there. As
@ZuffenZeus
mentioned, the speakers attach to the plastic panel. A better mounting method is a good idea for good sound and mechanical reliability.
Don't worry about the rear speakers and concentrate on the front 4 speakers for your front sound stage. The rear is just fill.
I'm planning a big stereo replacement and probably will eliminate the rears. The band is always in front of you not behind.
Delete the complete OEM System and rebuild everything. New Stereo (Kenwood, Pioneer, Alpine), 5 Channel Amp, 3 Way front, OEM Subwoofer Box with 2 Tang Band W5-1138SMF Subwoofer or new box with a 6.5" Woofer in it - and enjoy. The position of the front Speakers are not that bad.
This is what i was looking for. If i delete or cut out the oem speaker from the plastic grill, i figured a larger speaker could be installed behind it.
Please dont do it. It�s a horrible idea and makes no Sense.
If you want more Bass in your 996, put a subwoofer in it. With bigger Speaker you dont get a better sound.
Change the front speakers, change the amplifier, put a Subwoofer in it and enjoy.
I researched the tangs and their specs were lower than what I expected. So I went with infinity component speakers that were cut down to fit into the box. I plan on changing the oem head unit and amplifier to an 8 channel to provide power to each set of speakers. My car has the upgraded audio option so it has two woofers in the door, not one like most. If I installed a 3 way 6.5 in the rear panels I figured that would help with any additional high notes.
I kept the factory 6-channel HAES amp and installed a factory 997 self powered sub behind the seats. All it needs is a 12V+ constant, 5V+ amp trigger, ground, and line level audio signal. As mentioned before, I replaced the dash and rear 4" speakers with Kickers. Was going to replace the 2-ohm HAES door subs, but after bench testing them, they were still in good shape. Installed a "PCCM Clone" that has wireless CarPlay, backup camera, and sub output.
The sound is leaps better than before.
