Tony Daniel Posted January 8, 2023 Report Share Posted January 8, 2023 (edited) A simple upgrade to the speaker system on the 981 is to replace the useless tweeters in the dash. I followed an old post on RENNLIST detailing changing them on a 991 and picked up a pair of Dayton Audio ND20FB-4 (£46 a pair on Amazon). The 981 grills is slightly different to the 991's and the spring clip that holds them in is a bit of a pig to get off on the first attempt. Above shows the original tweeter on the right and the new Dayton ND-20FB next to it. It fits like a glove in the speaker grill I took the back of the old speaker with the OEM cable socket and capacitor. It just peels off after de-soldering the connections, then re-solder it to the new tweeter The Dayton speakers fit exactly into the original speaker housing, and after doing one it took me 10mins to do the other side. The difference in the sound now is very noticeable and has me thinking what to do with the door speakers. I think they consist of a 200mm sub and 100mm mid range in each door. Edited January 8, 2023 by Tony Daniel 1 1 Quote Link to comment Share on other sites More sharing options...
zagamuffin Posted January 8, 2023 Report Share Posted January 8, 2023 (edited) Nice job , Intrested in doors, fit some dynamat squares while in there Edited January 8, 2023 by zagamuffin Quote Link to comment Share on other sites More sharing options...
daz05 Posted January 8, 2023 Report Share Posted January 8, 2023 Nice little mod I had been thinking of upgrading these and the centre speaker. I always feel like most of the sound comes from the top of the dashboard anyway. I've just bought 2 🫣 1 Quote Link to comment Share on other sites More sharing options...
ATM Posted January 8, 2023 Report Share Posted January 8, 2023 Do all these cars have a centre speaker - where is it? Quote Link to comment Share on other sites More sharing options...
Davidbf1.com Posted January 8, 2023 Report Share Posted January 8, 2023 40 minutes ago, ATM said: Do all these cars have a centre speaker - where is it? Centre of the dash 😂 I’ll get my coat…. 1 Quote Link to comment Share on other sites More sharing options...
Tony Daniel Posted January 8, 2023 Author Report Share Posted January 8, 2023 2 hours ago, Davidbf1.com said: Centre of the dash 😂 I’ll get my coat…. But it is! Watch about 1 min into this You tube Vid Quote Link to comment Share on other sites More sharing options...
daz05 Posted January 8, 2023 Report Share Posted January 8, 2023 8 hours ago, ATM said: Do all these cars have a centre speaker - where is it? Cars with sound package plus and above have it, centre of dash under grill. Quote Link to comment Share on other sites More sharing options...
Tony Daniel Posted February 6, 2023 Author Report Share Posted February 6, 2023 After the success of the dash speakers I have decided to go ahead and replace the 2 in each door as well so this lot turned up today. Audison 4" Mid range and Audison 8" Sub woofers. Both of these are 4 Ohms which are a direct replacement to the ones in my car with the Sound package plus fitted. I believe its a little more difficult with Bose as usual because the subs are only 1 ohm. Fitment required speaker adapters and connecters for the Porsche wiring loom, both of these were sourced from a company based in Yorkshire called SCR 1 Quote Link to comment Share on other sites More sharing options...
daz05 Posted February 6, 2023 Report Share Posted February 6, 2023 Yes but is it any good? Quote Link to comment Share on other sites More sharing options...
Tony Daniel Posted February 6, 2023 Author Report Share Posted February 6, 2023 5 hours ago, daz05 said: Yes but is it any good? The Porsche Ask speakers used for the sound package plus system are pretty poor, but maybe used for there lightness. Replacing the dash speakers really made a big difference, the mids not so much, the subs give a much much deeper bass. Sound proofing to the door is a must, the whole thing reverberated before and this caused the door handle to rattle, so I used around 45cmx60cm of Dynamat extreme on each door skin. I would have liked to have got more up around the door handle but didn't fancy taking all the air curtain off to get the inner panel off fully. 1 1 Quote Link to comment Share on other sites More sharing options...
Patt Posted February 8, 2023 Report Share Posted February 8, 2023 Good job, especially matching the branding on the cones. why not stick some sound deadening on the black door membrane, or even the door card to stop the resonance ? Quote Link to comment Share on other sites More sharing options...
Tony Daniel Posted February 8, 2023 Author Report Share Posted February 8, 2023 Yes added some to the membrane and door card, avoiding the area at the top due to the air bag. The vibration is gone except for at ear splitting levels. 1 Quote Link to comment Share on other sites More sharing options...
mavis.d Posted February 8, 2023 Report Share Posted February 8, 2023 Nice, I do like an audio project Quote Link to comment Share on other sites More sharing options...
andygo Posted February 10, 2023 Report Share Posted February 10, 2023 On 2/8/2023 at 9:06 PM, mavis.d said: Nice, I do like an audio project hear hear. Quote Link to comment Share on other sites More sharing options...
daz05 Posted March 23, 2023 Report Share Posted March 23, 2023 @Tony Danieldid the first one, tested....hmmm not much sound coming from here probably not going to make much difference. How wrong was I, my music sounds so much better ! I think upgrading the centre speaker will be even better, any suggestions? Quote Link to comment Share on other sites More sharing options...
Tony Daniel Posted March 23, 2023 Author Report Share Posted March 23, 2023 44 minutes ago, daz05 said: @Tony Danieldid the first one, tested....hmmm not much sound coming from here probably not going to make much difference. How wrong was I, my music sounds so much better ! I think upgrading the centre speaker will be even better, any suggestions? Usually people disconnect the centre channel speaker, but so far I have not touched it or even looked at it, I think it's a 4" speaker like the door mids but not sure what depth. Adding sound proofing to the doors would be a good step. Quote Link to comment Share on other sites More sharing options...
daz05 Posted March 23, 2023 Report Share Posted March 23, 2023 (edited) 3 hours ago, Tony Daniel said: Usually people disconnect the centre channel speaker, but so far I have not touched it or even looked at it, I think it's a 4" speaker like the door mids but not sure what depth. Adding sound proofing to the doors would be a good step. I can see why, I think it over powers everything so with the other speakers upgraded I guess it makes sense to disconnect it. I suppose I would rather it was upgraded and keep everything else as is. Either way pleased with this little mod. I did the doors a long time ago mostly to stop the bass vibration. Edited March 23, 2023 by daz05 1 Quote Link to comment Share on other sites More sharing options...
zagamuffin Posted March 24, 2023 Report Share Posted March 24, 2023 One Limitation to sound upgrading here is the ability to tune the frequencies to get the most out of the now increased range.up to Bose have fairly basic tone controls, this is where I chime in about about my new best friend. Mr12v wireless CarPlay upgrade. It’s got 15 way DSP equalisation which in the right hands can make a savage difference. I’d advise anyone whose gone to the trouble of spending and fitting new speakers to consider getting this CarPlay and also more importantly getting some one knowledgeable to tune it properly. within the 15 band you can shift the scales as well. Proper stuff albeit dacs etc are not high end/ 1 Quote Link to comment Share on other sites More sharing options...
daz05 Posted May 3, 2023 Report Share Posted May 3, 2023 I've found some plug and play mids and tried them out tonight, really good bigger impact than the tweeters for me, I think the centre speaker is too overwhelming for the tweeters so you don't get the full effect in my car. Considering disconnecting the centre speaker. Anyway, Eton does BMW upgrade kits and Porsche is essentially using the same or very similar kit so these slot right into the doors. I had to trim a piece of the connector plug ever so slightly but honestly no big deal so all fully reversible. The Eton UG B100 are the ones I used. 👌 Quote Link to comment Share on other sites More sharing options...
ATM Posted May 4, 2023 Report Share Posted May 4, 2023 On 2/10/2023 at 8:43 PM, andygo said: hear hear. Well done Quote Link to comment Share on other sites More sharing options...
ATM Posted May 4, 2023 Report Share Posted May 4, 2023 On 1/8/2023 at 8:45 PM, daz05 said: Cars with sound package plus and above have it, centre of dash under grill. So my car has Bose. Can I still upgrade all these goodies in mine - door speakers etc - what about the amp/s? Quote Link to comment Share on other sites More sharing options...
Patt Posted May 4, 2023 Report Share Posted May 4, 2023 Nope - Bose runs a completely different current flow (Ohms) You would need to replace all speakers, amp, and head unit. Standard car is 4 ohm, Bose is 2.5 ohms generally. (household hi-fi is 8ohm. Dropping the ohms is an easy and cheap way to gain more sound for less power consumed. Hope that helps Quote Link to comment Share on other sites More sharing options...
Tony Daniel Posted May 4, 2023 Author Report Share Posted May 4, 2023 @Patt In the 991/981 the Bose speakers are not all 4 ohms, the Woofers are only 1 ohm and the Mids are 2 ohm. Quote Link to comment Share on other sites More sharing options...
Patt Posted May 4, 2023 Report Share Posted May 4, 2023 Ohh that's a great comparison. Does it show the difference in the amplifiers too ? I could be tempted to upgrade my Bose. Quote Link to comment Share on other sites More sharing options...
Tony Daniel Posted May 4, 2023 Author Report Share Posted May 4, 2023 No that chart was more to show the weight gains to adding aftermarket speakers and it just happened to also include the impendences. Quote Link to comment Share on other sites More sharing options...
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