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proffski
Über Contributor 1000+
Joined: 22 Aug 2003
Posts: 1297
Location: Tewkesbury UK
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 Posted: Fri Jan 13, 2006 12:59 am Post subject: Re: KEF 105.2 Bass Alignment |
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I may have the Thiele / Small parameters for the relevant bass driver somewhere.
Unless our learned friend boyzo has already worked out the ideal size for the cabinet I am willing to do it for you.
But in my own time as and when available.
I will need the parameters...  |
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boyzo
Intermediate Contributor 25+
Joined: 10 May 2003
Posts: 44
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| Posted: Fri Jan 13, 2006 3:52 am Post subject: Re: KEF 105.2 Bass Alignment |
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Well for a sealed box 100 - 150 liters
for a vented probably 200 liters
I dont have VAS an Qt at hand for the B300
It depends on how low you want to go in trems of F3
I think 200 liters vented would shake the house 
| qguy wrote: | Hi Boyzo, How big a box do I need ?, I am in the midst of making a new box since the old box is "Old" and some section had water damaged or to be more precise has "milk damage".. on second thought maybe I should wait for the kids to get out of the house and then make a new box
| boyzo wrote: | The thing with the 105 was its so called 3rd order bass Alignment a combination of an underdamped 2nd order sealed box in combination with a series capacitor to give a so called optimally damped 3order box.
Here I think here KEF had a blind spot.
The B300 can perform but only in a large box sealed / reflex but not in the the 105 box.
| qguy wrote: | | Does anyone have a review of the kef 105.2 ? |
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boyzo
Intermediate Contributor 25+
Joined: 10 May 2003
Posts: 44
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| Posted: Fri Jan 13, 2006 3:56 am Post subject: Re: KEF 105.2 Bass Alignment |
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Andy post your calcs...
| proffski wrote: | I may have the Thiele / Small parameters for the relevant bass driver somewhere.
Unless our learned friend boyzo has already worked out the ideal size for the cabinet I am willing to do it for you.
But in my own time as and when available.
I will need the parameters... |
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boyzo
Intermediate Contributor 25+
Joined: 10 May 2003
Posts: 44
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| Posted: Fri Jan 13, 2006 4:36 am Post subject: Re: KEF 105.2 Bass Alignment |
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Sealed 100 - 130 liters vented 200 liters tuned to 23 hz but you need to measure the actual VAS of the B300 as KEF's date is a static VAs not a Thiel Small VAS
| qguy wrote: | Hi Boyzo, How big a box do I need ?, I am in the midst of making a new box since the old box is "Old" and some section had water damaged or to be more precise has "milk damage".. on second thought maybe I should wait for the kids to get out of the house and then make a new box
| boyzo wrote: | The thing with the 105 was its so called 3rd order bass Alignment a combination of an underdamped 2nd order sealed box in combination with a series capacitor to give a so called optimally damped 3order box.
Here I think here KEF had a blind spot.
The B300 can perform but only in a large box sealed / reflex but not in the the 105 box.
| qguy wrote: | | Does anyone have a review of the kef 105.2 ? |
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