Member Since: 11 Jan 2005
Location: Shropshire
Posts: 18296
Nickhearne wrote:
BN wrote:
Been outside, got cold and could vaguely hear some 'woofing'. I thought it was just vibration, but there is definately something there, Well blow me down, what a useless 'woofer'
Like I said... its there and will vibrate yer bum if your sat there
1st Nov 2005 6:30 pm
BN
Member Since: 18 Mar 2005
Location: Here
Posts: 6463
simon wrote:
Nickhearne wrote:
BN wrote:
Been outside, got cold and could vaguely hear some 'woofing'. I thought it was just vibration, but there is definately something there, Well blow me down, what a useless 'woofer'
Like I said... its there and will vibrate yer bum if your sat there
MrsBN reackens its not as good as the washing machine.
1st Nov 2005 6:32 pm
blue meanie D3 Decade
Member Since: 04 Aug 2005
Location: Newbury
Posts: 6861
as long as I'm not the only one that thinks it's a bit on the limp side then!
nothing like as vocal as the ones in the d2s then!
and theeeeennn......???
1st Nov 2005 6:37 pm
Nickhearne
Member Since: 28 May 2005
Location: Beaconsfield Bucks
Posts: 992
BN wrote:
simon wrote:
Nickhearne wrote:
BN wrote:
Been outside, got cold and could vaguely hear some 'woofing'. I thought it was just vibration, but there is definately something there, Well blow me down, what a useless 'woofer'
Like I said... its there and will vibrate yer bum if your sat there
MrsBN reackens its not as good as the washing machine.
Range Rover Sport Estate 2.0 P400e Hse Dynamic Black
D4 HSE Santorini Black
Almond Arabica hide & Walnut trim Now sold
Discovery 3 TDV6 SE
Zambezi Silver Ebony leather Now sold
1st Nov 2005 6:38 pm
blue meanie D3 Decade
Member Since: 04 Aug 2005
Location: Newbury
Posts: 6861
Nickhearne wrote:
BN wrote:
simon wrote:
Nickhearne wrote:
BN wrote:
Been outside, got cold and could vaguely hear some 'woofing'. I thought it was just vibration, but there is definately something there, Well blow me down, what a useless 'woofer'
Like I said... its there and will vibrate yer bum if your sat there
MrsBN reackens its not as good as the washing machine.
twin tub or upright? and theeeeennn......???
1st Nov 2005 6:42 pm
BN
Member Since: 18 Mar 2005
Location: Here
Posts: 6463
blue meanie wrote:
Nickhearne wrote:
BN wrote:
simon wrote:
Nickhearne wrote:
BN wrote:
Been outside, got cold and could vaguely hear some 'woofing'. I thought it was just vibration, but there is definately something there, Well blow me down, what a useless 'woofer'
Like I said... its there and will vibrate yer bum if your sat there
MrsBN reackens its not as good as the washing machine.
twin tub or upright?
Oh no only the best a Bosch washer/tumble dryer. Best on fast spin apparently.
1st Nov 2005 6:44 pm
jeff
Member Since: 18 Jun 2005
Location: Cornwall
Posts: 393
From memory I think SE has a 'passive' sub and the HSE an 'active' one.D3 TDV6SE
Defender 110 V8 lpg
Member Since: 04 Aug 2005
Location: Newbury
Posts: 6861
yes but the active one comes with the logic 7 upgrade and theeeeennn......???
1st Nov 2005 8:51 pm
adara
Member Since: 14 Nov 2005
Location: Eastern Europe
Posts: 152
Now, I have some (living room) HiFi experience and for the life of me I can't figure out how can a passive suboofer (like the one from my SE HI ICE system) be energized in a car... In a normal loudspeaker cabinet the passive subwoofer is vibrating in response to another active speaker... The sub in my Disco is vibrating even when the tailgate is open, so there must be some source of power for that, not just resonance from the other speakers... To get a glimpse of how the sub looks like without dismantling the car, check out this photo: http://www.disco3.co.uk/gallery/displayima...amp;pos=12
1st Dec 2005 7:08 pm
Pelyma
Member Since: 06 Jan 2005
Location: Patching, Sussex
Posts: 15496
The picture looks like the BIW line before going to the best paint shop in any car factory in the world (that's what LRW called it anyway)DS3 TDV6 HSE - Silver with Alpaca (old one) Gone
DS3 TDV6 HSE- Silver with Alpaca (new one) Gone
D4 HSE Lux - Montalcino Red Gone
Porsche Cayenne V8 Diesel S
Now, I have some (living room) HiFi experience and for the life of me I can't figure out how can a passive suboofer (like the one from my SE HI ICE system) be energized in a car... In a normal loudspeaker cabinet the passive subwoofer is vibrating in response to another active speaker... The sub in my Disco is vibrating even when the tailgate is open, so there must be some source of power for that, not just resonance from the other speakers...
The sub will derive its feed via a passive crossover network from a sum of the left and right feeds to the other speakers. This is common practice and simply requires good network design to work well. In the Logic 7 system, the sub will have its own dedicated power amplifier channel that will be fed from the head unit via an active (i.e. signal-level) low-pass filter. There will probably also be some equalization in the active version to tailor it to the car's acoustic environment.
1st Dec 2005 8:31 pm
adara
Member Since: 14 Nov 2005
Location: Eastern Europe
Posts: 152
OK, now this makes sense. I wouldn't call it a passive subwoofer though...
In this case the term 'passive' simply refers to the fact that the loudspeaker doesn't have its own dedicated amplifier and is driven via a passive network.
Incidentally, the type of system you were referring to in your earlier post where a loudspeaker is driven acoustically from the vibration of another driver is known as a 'parasitic driver' and is actually pretty rare these days!
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