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Joined: Nov 2006
Posts: 4,013 Likes: 1
Vogon Civil Servant
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Vogon Civil Servant
Joined: Nov 2006
Posts: 4,013 Likes: 1 |
Slight snag, I guess the speaker will not be sending a full range signal to that driver, it will be high passed I would guess?
Where is the crossover?
I presume the DSP/Pre amp section sets the crossover points and then that signal is sent onto the amp?
So probably no where to grab a full range signal from? Why do you need to grab the full range signal? The sub is not going to go as high as the bass driver of the speaker anyway.
Sooloos, Roon, G series (with LPS upgrade), 800 series (with LPS upgrade), HD621, AC200, Prime and PS, DSPs old and new.
Purdeys, Moke, Leica, 'Blad. Only the best.
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Joined: Jan 2004
Posts: 2,001 Likes: 10
Knows where his towel is
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Knows where his towel is
Joined: Jan 2004
Posts: 2,001 Likes: 10 |
Slight snag, I guess the speaker will not be sending a full range signal to that driver, it will be high passed I would guess?
Where is the crossover?
I presume the DSP/Pre amp section sets the crossover points and then that signal is sent onto the amp?
So probably no where to grab a full range signal from? Why do you need to grab the full range signal? The sub is not going to go as high as the bass driver of the speaker anyway. It's the lower end I want. I would expect the mid drive to be bandpassed from around 35hz to around 5khz, however, I want the sub to do 20-35hz, but I don't think that signal will be there.
No Darling, I've had it months!
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Joined: Apr 2004
Posts: 12,733 Likes: 88
Don't Panic!
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Don't Panic!
Joined: Apr 2004
Posts: 12,733 Likes: 88 |
Mid bass driver does everything below the tweeter x-over (i.e. all the way to 35Hz, I *think*). There may be other filtering.
Bass driver is (analogue?) low-pass filtered and only deals with the bottom end, I *think*.
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Joined: Jan 2004
Posts: 2,001 Likes: 10
Knows where his towel is
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Knows where his towel is
Joined: Jan 2004
Posts: 2,001 Likes: 10 |
Being an electronic crossover it must be bandpassed as it can't send 20hz to that small 6" driver.
It is shame we can't hack the firmware to give the bass driver 'everything' below the crossover, and then simply send that signal to a sub instead and completely disconnect the bass driver.
I have to admit I thought the two mid drivers were doing the same thing, but never really thought about it before.
No Darling, I've had it months!
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Joined: Sep 2007
Posts: 1,986 Likes: 55
Knows where his towel is
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Knows where his towel is
Joined: Sep 2007
Posts: 1,986 Likes: 55 |
Being an electronic crossover it must be bandpassed as it can't send 20hz to that small 6" driver. It doesn't have to, but it may be band limited to 15Hz; no music down there and 15Hz is normal for warp filters (remember them...) I have to admit I thought the two mid drivers were doing the same thing, but never really thought about it before. This type of speaker is normally known as a 2.5 way, the 2nd low driver has an additional low pass filter to extend the low end whilst not smearing the midrange. I think you should give it a go for the price of a few metres of cable. Steve.
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Joined: Jan 2004
Posts: 2,001 Likes: 10
Knows where his towel is
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Knows where his towel is
Joined: Jan 2004
Posts: 2,001 Likes: 10 |
I think you should give it a go for the price of a few metres of cable.
Steve. Agreed, I will have a bash tomorrow.
No Darling, I've had it months!
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Joined: May 2006
Posts: 79 Likes: 1
Mostly harmless
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Mostly harmless
Joined: May 2006
Posts: 79 Likes: 1 |
As usual,
Outstanding advice.
I think I will pick up a 568.
I have a B&W 800D 7 speaker set up / DD-18 sub / MBL DAC / Sony CDP-1 / Bluray /
HD PLAYER / all high interconnects & plugs / Bryston Amps / Sony VPL200 projector--as my main system
I have the older Meridian gear in same room so I can mute main system and watch recorded sports & game shows while listening to some good 2 channel music.
Probably a better way to do this, but, my technical expertise is limited at best.
Dave
DSP7200SE / DSP5200 / 861 v4 / 218 / C15 / Oppo 205 / DSP5500 Center Piano Finish
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