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Dammit
Kyalami


Joined: 23 Sep 2016
Posts: 1914



PostPosted: Sun Dec 02, 2018 12:28 pm    Post subject: Installing Hertz DCX 100.3 speakers in the dash Reply with quote

I wanted a bit more clarity and a lot more oomph from my stereo - my old ears are struggling to hear the finer points of dialogue in The Archers when I have the roof down and a good B road to charge down.

The Hertz speakers I am using were recommended in the speaker thread, I've not yet listened to them but hope that they are good.

With that said, I suspect this method will work with any comparable speaker.

The stock speakers are Nokia/Haes 4ohm, and are fairly "built to a price", to my eye at least.





The speaker is attached with three screws, two pictured here:



And a single one at the opposite side here:



Potentially a thousand plagues lurks in this speaker mesh:



The accused:



Note the three attachment points:



There's an interesting cut-out here, by the single attachment point, which gave me an idea (more on which shortly):



This is the new unit:






I cut away the speaker from the retaining ring:







I then cut three further cut-outs in the retaining ring, spacing them equidistant from one another, meaning that there were then four cut-outs, which meant that the new speaker could drop in and be held firmly:









It's not going to fit into the grill with those tabs, so they need to be edited:



Then simply refit the retaining ring with its new passenger:







This screw barely bites into the metal tab which retains it, I'll use a longer screw if I can find one:



Old and new:







My next task is to teach myself basic CAD and create a digital version of this ring that can be run off using a 3D printer, as I have more of these to do and I don't want to have to cut up a speaker each time.
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Halcyon
Imola


Joined: 02 Nov 2015
Posts: 776
Location: Somerset


PostPosted: Sun Dec 02, 2018 4:32 pm    Post subject: Reply with quote

I just cut up all four speakers when i did mine (Alpine, in my case)

But good work fella!! Thumb
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Dammit
Kyalami


Joined: 23 Sep 2016
Posts: 1914



PostPosted: Sun Dec 02, 2018 5:14 pm    Post subject: Reply with quote

There's an argument for doing that - I've got no use for the old speakers, and they'll likely all go in the bin as I suspect selling them would not be worth the return.

Cutting the retaining rings out would therefore be getting the most use from them.

However, I'd quite like to learn Fusion 360, and play with a 3D printer, so this is a decent excuse.
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Jamesx19
Spa-Francorchamps


Joined: 10 Jul 2015
Posts: 374
Location: Brighton


PostPosted: Sun Dec 02, 2018 5:18 pm    Post subject: Reply with quote

Nice work Dammit. And great post with all the pics. I can see what my next project is going to be...
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Halcyon
Imola


Joined: 02 Nov 2015
Posts: 776
Location: Somerset


PostPosted: Sun Dec 02, 2018 5:58 pm    Post subject: Reply with quote

Dammit wrote:
....However, I'd quite like to learn Fusion 360, and play with a 3D printer, so this is a decent excuse.


Well, if i had a 3D printer and stuff, I might have done it a different way too! Grin Very Happy
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Marky911
Kyalami


Joined: 04 Jun 2009
Posts: 1915



PostPosted: Sun Dec 02, 2018 6:08 pm    Post subject: Reply with quote

Nice work Neil. Cool

You can get speaker blanks that fit into the grilles exactly the same as the old speakers did. You can then cut them and fit new speakers to those.

Part number - 996.645.049.02.01C £19 each. That's a bit rich though but typical Porsche. If you can make some cheaper then that's good. Thumb





They're the exact speakers I'm going for in the new year. I'm hoping they'll be enough of an upgrade but if not I'll add a powered amp in the front or rear footwell.
I'd rather not as its extra weight and I'm usually too busy driving to listen to music. Road trip with the wife necessitates better sounds though.

Looking forward to your verdict.
 
  
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sp1ke
Newbie


Joined: 07 May 2009
Posts: 12



PostPosted: Sun Dec 02, 2018 9:29 pm    Post subject: Reply with quote

Nice Job thumbsup

Here's a very similar video walkthrough someone else has made to show how to up cycle an old set of 986/996 speakers to make adaptors for a replacement set

https://www.youtube.com/watch?v=W0LPyCoq5k8
 
  
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Ghianightmare
Monza


Joined: 25 Apr 2017
Posts: 173
Location: Dublin


PostPosted: Sun Dec 02, 2018 10:34 pm    Post subject: Reply with quote

Nice job and write up Dammit

Just one thing I’m not sure about after reading this and the other speaker threads - can I use these in my car which has the full Bose factory kit?

I’m 99% I can but don’t want to order them until I’m 100%. Wife wants to know what I want for a Christmas...

Thanks
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Ghianightmare
Monza


Joined: 25 Apr 2017
Posts: 173
Location: Dublin


PostPosted: Sun Dec 02, 2018 11:02 pm    Post subject: Reply with quote

Nice job and write up Dammit

Just one thing I’m not sure about after reading this and the other speaker threads - can I use these in my car which has the full Bose factory kit?

I’m 99% I can but don’t want to order them until I’m 100%. Wife wants to know what I want for a Christmas...

Thanks
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Dammit
Kyalami


Joined: 23 Sep 2016
Posts: 1914



PostPosted: Mon Dec 03, 2018 9:51 am    Post subject: Reply with quote

sp1ke wrote:
Nice Job thumbsup

Here's a very similar video walkthrough someone else has made to show how to up cycle an old set of 986/996 speakers to make adaptors for a replacement set

https://www.youtube.com/watch?v=W0LPyCoq5k8


I had watched that one, I thought it made sense, just wanted it to be a little neater and with greater retention of the speaker - that chap uses glue, whereas if you cut out bits of the retaining ring for the ears on the speaker it holds it firmly in place with no requirement for a bonding agent.
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Dammit
Kyalami


Joined: 23 Sep 2016
Posts: 1914



PostPosted: Mon Dec 03, 2018 9:52 am    Post subject: Reply with quote

Ghianightmare wrote:
Nice job and write up Dammit

Just one thing I’m not sure about after reading this and the other speaker threads - can I use these in my car which has the full Bose factory kit?

I’m 99% I can but don’t want to order them until I’m 100%. Wife wants to know what I want for a Christmas...

Thanks


I believe that you can - hopefully someone else will weigh in, but my understanding is that the MOST fibre optic stuff is between the HU and the amp/s, with the speakers all fed via standard metal wire.

A quick test would be to unscrew one of your speakers and see what it is, of course.
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Ghianightmare
Monza


Joined: 25 Apr 2017
Posts: 173
Location: Dublin


PostPosted: Mon Dec 03, 2018 10:09 am    Post subject: Reply with quote

Thanks. I’m PCM 1 so pre MOST I believe. Speakers ordered
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stewhp
Spa-Francorchamps


Joined: 28 Sep 2016
Posts: 264
Location: Essex


PostPosted: Tue Dec 04, 2018 6:51 am    Post subject: Reply with quote

I believe that the Bose speakers are a lower impedence than your normal 4 Ohm versions.

Think they are only 2 Ohm. They should be marked when you take them out.
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Current car: 996 Carrera 4S, Carrara white
Previous cars:964 Carrera 4, 964 Carrera2
964 Turbo 3.6
 
  
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Ghianightmare
Monza


Joined: 25 Apr 2017
Posts: 173
Location: Dublin


PostPosted: Tue Dec 04, 2018 10:13 pm    Post subject: Reply with quote

Oh crap... now I have 4 speakers on the way Confused
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Dammit
Kyalami


Joined: 23 Sep 2016
Posts: 1914



PostPosted: Tue Dec 04, 2018 10:24 pm    Post subject: Reply with quote

Get a Torx driver and pull one put, it's marked quite clearly on the base of the magnet.

If it's indeed the case that Bose/MOST systems are 2 ohms for all the speakers then I'll happily buy a pair of 100.3's off you, and I imagine someone else will take the others - then you can buy a set that will work (if they are available).
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Ghianightmare
Monza


Joined: 25 Apr 2017
Posts: 173
Location: Dublin


PostPosted: Tue Dec 04, 2018 11:21 pm    Post subject: Reply with quote

Thanks Dammit - I had a look at a US supplier site - Crutchfield - and all of the speakers the offer for 2002 Bose are 4 ohm, so all is good.

Too cold and wet outside to go near the car. I’ll drive it to work on Friday and pop one out in the nice warm underground car park

Worst case is the6 won’t be a loud, but as you are aware, anything is better than the originals...

Thanks again. Very Happy
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maldren
Österreich


Joined: 07 Oct 2016
Posts: 941



PostPosted: Wed Dec 05, 2018 8:50 am    Post subject: Reply with quote

Hi Neil,
have you listened to the new speakers with the old amp? Do they sound significantly different/better?

I'm looking to upgrade my system but I have the MOST system, you're right of course, the fibre part is between the radio and amp and I'll probably fit a new head unit as well. I'm less worried about it looking original so I'm thinking of following Alex's lead.
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Mike
2003 996.2 C2 Coupe Arctic Silver
 
  
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Dammit
Kyalami


Joined: 23 Sep 2016
Posts: 1914



PostPosted: Wed Dec 05, 2018 9:28 am    Post subject: Reply with quote

Not yet- I've got 10 days of holiday to use up this month or I lose it, so I'm off every Friday, and then the last two weeks - so my plan was to do some work on the car on Friday.

You'd be welcome to pop over and give it a listen if you wanted.
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maldren
Österreich


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PostPosted: Wed Dec 05, 2018 10:23 am    Post subject: Reply with quote

Dammit wrote:
Not yet- I've got 10 days of holiday to use up this month or I lose it, so I'm off every Friday, and then the last two weeks - so my plan was to do some work on the car on Friday.

You'd be welcome to pop over and give it a listen if you wanted.


PM sent
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Marky911
Kyalami


Joined: 04 Jun 2009
Posts: 1915



PostPosted: Wed Dec 05, 2018 11:06 pm    Post subject: Reply with quote

Yes, please report back on the difference without any other mods Neil.

As I've said I'm hoping to just get away with replacing my 4x 4 inch speakers with the hertz ones and leaving things there. I like the factory look of my CDR-22 as well so that's all that's powering them.

I don't have any door speakers. Simply the 2 dash and 2 rear quarter ones.

I'm not expecting massive improvements but as long as we can hear the music ok, that'll do. Thumb
 
  
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