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Sub Woofer Not Working?
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ChrisA
 


Member Since: 02 Feb 2011
Location: Dorking, Surrey
Posts: 87

United Kingdom 2011 Discovery 4 3.0 TDV6 HSE Auto Stornoway GreyDiscovery 4

Of course!
  
Post #77774223rd Mar 2011 10:03 am
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ChrisA
 


Member Since: 02 Feb 2011
Location: Dorking, Surrey
Posts: 87

United Kingdom 2011 Discovery 4 3.0 TDV6 HSE Auto Stornoway GreyDiscovery 4

Here's the reply from Harman.

Hi Chris
 
I am sorry to hear of your concerns regarding the Harman Kardon system on your Discovery 4 HSE which were passed to us from our Consumer Division.
 
We have discussed your concerns with our technical team who have advised that the subwoofer performance is source dependant (music/program content) and its performance may not be as noticeable on certain tracks/broadcasted material. When the subwoofer is properly integrated into the system, you should ‘feel’ it as much as ‘hear’ it as it will be somewhat acoustically transparent due to the low frequency wavelength produced. The subwoofer in our system has a relatively narrow bandwidth and is tuned to perform at frequencies primarily below 60Hz, being seamlessly integrated with the four door bass speakers. If your CD has limited spectral content below this frequency then the subwoofer and subwoofer level control will also have limited impact.
 
Your primary line of communication should be through your Land Rover dealership; if you remain unhappy with the performance of your Harman Kardon system you could request they contact the central Land Rover Technical Services Department for further investigation.
 
Kindest regards
Kay


I felt that was a load of techo jibba-jabba which I didn't understand so posed my question again a little more clearly:


Hi Kay,

Thanks for your reply, but I'm none the wiser and nor is the Land Rover technical that I've spoken to.

To clarify: how is the sub woofer control meant to work? Previously when you turned it up you got more bass and when you turned it down you got less, this isn't happening with the Logic 7 system not just for me but for all the people I've spoken to with it installed in their HSE Discovery 4's and I have also posed this question on www.disco4.co.uk where they confirm what I'm saying.

We're looking for a means to separately adjust the sub-woofer which is there in the control screen but doesn't actually work - how can we achieve this?

I'd appreciate it if you didn't say "Go back to Land Rover" as I've already been to Land Rover and they don't know why it's not working but say it must be something to do with the Logic 7.

Many thanks
Chris


I've still not heard anything and that was 4 days ago.

For me it has become a bit of a issue as playing Madonna's "Nobody's Perfect" track the kids and myself don't get the lovely buzz in our chests that we so enjoyed in the Freelander or any of the tracks that we enjoyed being vibrated to.

The system is far from Premium Crying or Very sad
  
Post #7810991st Apr 2011 8:31 am
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stapldm
 


Member Since: 11 Sep 2006
Location: Swine Town
Posts: 2330

United Kingdom 2007 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

Thinking out loud here, but if it's supposed to work below 60hz then does anyone know if there a PC program that can generate a pure sine wave at a set frequency?

If so, a CD containing tracks of 60hz 55hz 50hz 45hz 40hz 35hz etc can be created as a test CD.

As the sub-woofer is a single channel it should activate for left or right channel (or both) irrespective of pro logic settings right?
 Dr. Ian Malcolm:
"Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should."
Transgenic tomato anyone? 
 
Post #7811041st Apr 2011 8:47 am
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BBDisco3
 


Member Since: 23 Nov 2008
Location: Cheshire
Posts: 3646

United Kingdom 

I must say I have noticed it work, but only on certain tracks - those with the heavy bass.

Lets see what they come up with next.

However is it just the chest that gets the buzz from Madona Wink
  
Post #7811081st Apr 2011 8:56 am
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ChrisA
 


Member Since: 02 Feb 2011
Location: Dorking, Surrey
Posts: 87

United Kingdom 2011 Discovery 4 3.0 TDV6 HSE Auto Stornoway GreyDiscovery 4

It's good to know that you'd expect to be able to hear 60hz sounds, my first thoughts were that you'd need to be a humpack whale and how I was going to get one in the D4 so I could do some more testing.
  
Post #7811101st Apr 2011 9:04 am
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MJIbex
 


Member Since: 13 Sep 2009
Location: Reading
Posts: 195

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Firenze RedDiscovery 4

I can definately feel the bass in my D4 - far more noticeable on the bass tracks though . Can feel the bass more than here it.

Mark.
  
Post #7811801st Apr 2011 11:02 am
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BBDisco3
 


Member Since: 23 Nov 2008
Location: Cheshire
Posts: 3646

United Kingdom 

ChrisA - Was it the thought of Madona that promted you to find that air vent Laughing
  
Post #7812071st Apr 2011 11:52 am
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DrLex
 


Member Since: 15 Jul 2005
Location: Ciderspace [Oi be in Zummerset]
Posts: 4863

Iceland 

stapldm wrote:
Thinking out loud here, but if it's supposed to work below 60hz then does anyone know if there a PC program that can generate a pure sine wave at a set frequency?
...

Tone Generator? If it's a demo version, you could extend the output duration using Audacity.
 Time flies like an arrow; fruit flies like a banana

Member of Club Med Sucks 
 
Post #7812321st Apr 2011 12:28 pm
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ChrisA
 


Member Since: 02 Feb 2011
Location: Dorking, Surrey
Posts: 87

United Kingdom 2011 Discovery 4 3.0 TDV6 HSE Auto Stornoway GreyDiscovery 4

BBDisco3 wrote:
ChrisA - Was it the thought of Madona that promted you to find that air vent Laughing


Rolling with laughter You're a funny man Mr. BBDisco3...if you're ever in Surrey be sure not to look me up. Wink
  
Post #7812821st Apr 2011 2:17 pm
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BBDisco3
 


Member Since: 23 Nov 2008
Location: Cheshire
Posts: 3646

United Kingdom 

You would hear me coming - sub woofer on max and air blowing to keep the tackle cool Laughing
  
Post #7812871st Apr 2011 2:22 pm
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ChrisA
 


Member Since: 02 Feb 2011
Location: Dorking, Surrey
Posts: 87

United Kingdom 2011 Discovery 4 3.0 TDV6 HSE Auto Stornoway GreyDiscovery 4

Rolling with laughter Rolling with laughter Rolling with laughter
  
Post #7812881st Apr 2011 2:23 pm
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