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portreathbeach
Trainee


Joined: 09 Aug 2015
Posts: 66



PostPosted: Sun Sep 15, 2019 4:46 pm    Post subject: Lower door speakers not working Reply with quote

I recently bought a 2004 997. I know that the standard PCM stereo is said to be pretty bad audio quality, but I was thinking it can't sound as bad as mine.

There doesn't seem to be any bass what so ever. It appears that the lower speakers in each door are not working. I have been reading online about an ASK amplifier mounted under the driver seat. Would the standard stereo I have in my car have this amplifier? And if so, is it used to amplify just the larger door speakers, and does the PCM head unit drive the smaller speakers directly.

Any help would be great
 
  
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portreathbeach
Trainee


Joined: 09 Aug 2015
Posts: 66



PostPosted: Sun Sep 15, 2019 4:56 pm    Post subject: Reply with quote

I just checked under the seat, no amp. I then checked in the bonnet behind where the wheel foam etc. is and found the amp.

It seems to have a lot of speaker wires coming from it, so I assume it must amplify the sound for all the speakers in the car, why would only the two lower door ones stop working?
 
  
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The return of Marty Wild
Kyalami


Joined: 04 Nov 2016
Posts: 1841



PostPosted: Sun Sep 15, 2019 5:14 pm    Post subject: Reply with quote

The ASK (Sound package Plus) amp isn’t under the seat. It’s in the frunk under the tool kit if you have it.
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The return of Marty Wild
Kyalami


Joined: 04 Nov 2016
Posts: 1841



PostPosted: Sun Sep 15, 2019 5:16 pm    Post subject: Reply with quote

My amp was toast, no bass or sound from the big door speakers. If you are having the same issue, you’ll need to send it to Norway to our resident expert for fixing. His service is second to none.
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Life's too short for cr4ppy cars, keep it German!

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portreathbeach
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Joined: 09 Aug 2015
Posts: 66



PostPosted: Sun Sep 15, 2019 5:19 pm    Post subject: Reply with quote

So you had the same problem as me then. Everything working except the lower door speakers?

I am an electrical engineer by trade and if I knew which parts to change in the amp I could probably do it myself. Any idea what the part is that needs replacing?
 
  
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The return of Marty Wild
Kyalami


Joined: 04 Nov 2016
Posts: 1841



PostPosted: Sun Sep 15, 2019 5:37 pm    Post subject: Reply with quote

There was just no bass, I figured fair play, I bought the car because of how it goes... then read on here about the common issue. Speak to Tore, he’s a well renowned Porsche electrician based in Norway.

https://www.bergvillfx.com/

Make sure you have that amp first, it’s in the front boot behind the toolbox under the emergency triangle.
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Life's too short for cr4ppy cars, keep it German!

Boxster S 986.1
Cayman S 987.1 (gone but not forgotten)
 
  
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portreathbeach
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Joined: 09 Aug 2015
Posts: 66



PostPosted: Sun Sep 15, 2019 6:01 pm    Post subject: Reply with quote

I just did a bit of investigation. It appears someone has removed the amplifier fuse. I replaced it and now the lower door speakers rumble and hiss. I guess the amplifier is definitely faulty. I'll get hold of the guy in Norway.
 
  
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The return of Marty Wild
Kyalami


Joined: 04 Nov 2016
Posts: 1841



PostPosted: Sun Sep 15, 2019 6:43 pm    Post subject: Reply with quote

Yep, sounds like someone was annoyed so just stopped it working entirely. Tore is your man.
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Life's too short for cr4ppy cars, keep it German!

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portreathbeach
Trainee


Joined: 09 Aug 2015
Posts: 66



PostPosted: Mon Oct 07, 2019 6:41 pm    Post subject: Reply with quote

Great news. I sent the amp to Tore in Norway and within a couple of weeks it has been returned and my lower door speakers are now working as they should be.
 
  
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Hertsdriver
Nürburgring


Joined: 12 Nov 2018
Posts: 477
Location: Hertfordshire/London

2004 Porsche 997 Carrera 2

PostPosted: Tue Oct 08, 2019 8:33 am    Post subject: Reply with quote

Great stuff! how much did it cost to fix the amp?
 
  
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portreathbeach
Trainee


Joined: 09 Aug 2015
Posts: 66



PostPosted: Tue Oct 08, 2019 6:09 pm    Post subject: Reply with quote

I shipped the amp to Tore, cost was about £15.

He repairs the amp and sends it back for a cost of about £130.
 
  
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resigner
Suzuka


Joined: 19 Dec 2013
Posts: 1235



PostPosted: Thu Oct 10, 2019 1:31 pm    Post subject: Reply with quote

The return of Marty Wild wrote:
My amp was toast, no bass or sound from the big door speakers. If you are having the same issue, you’ll need to send it to Norway to our resident expert for fixing. His service is second to none.


This. Tore is great. The Amp is known for failing, and will result in the door subs failing. Tore gives a warranty once he has repaired, he did mine about 2 years ago. Let me know if you need his contact details.
 
  
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Phil 997
Le Mans
Le Mans


Joined: 05 Dec 2015
Posts: 15573
Location: Bournemouth,Dorset

2009 Porsche 997 Carrera 4S

PostPosted: Thu Oct 10, 2019 4:49 pm    Post subject: Reply with quote

Good job , the two places I would send mine are Torre in Norway or Cartronics

https://www.cartronics.co.uk/porsche
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911 Owners,Some Invest In The Future,
Others Enjoy The Moment Today.
 
  
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portreathbeach
Trainee


Joined: 09 Aug 2015
Posts: 66



PostPosted: Thu Oct 10, 2019 8:59 pm    Post subject: Reply with quote

Yeah. Tore gives a 5 year warranty, which is pretty good.

I need to sort out the bloody rattles now, since there is now a bit of bass with the music, there are a lot of rattles going on. Maybe need to strip the doors down and have a look.
 
  
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