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some help needed with the design

 
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BorisB
Introductory Contributor


Joined: 23 Feb 2011
Posts: 1
Location: Bruges

PostPosted: Mon Feb 28, 2011 10:33 pm    Post subject: some help needed with the design Reply with quote

Hello, I'm a Belgian student and I've two pairs of KEF drivers

One pair of KEF B200 SP1039 woofers and one pair of KEF T27 SP1032 tweeters.
I am planning to build two enclosed boxes, each with a tweeter and with a woofer.
I've installed a program, BassBox 6 Pro, which I gave the parameters of the B200's. The internal volume is 32,71 liters.
The dimentions are 55,9(height)x35,9(width)x23,5(depth) centimeters
The way I want them to look like is this
And about a cross-over design, I've chosen to do create a 2nd Butterworth order cross-over. But I'm stuck with finding the right parts.
What is your opinion about my speaker project, if I may ask and does anyone of you know an online shop where I can buy conductors and inductors?

Thanks in advance,
Boris
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T.O. Chef
Senior Contributor 100+


Joined: 31 Aug 2007
Posts: 150
Location: Toronto Canada

PostPosted: Tue Mar 01, 2011 10:44 pm    Post subject: Reply with quote

Hmmmm.
I'm pretty sure that wee Tangent box is a whole lot smaller than 32+ liters.
Maybe close if it goes back about 1 meter in depth. But that's not too practical is it? Maybe tall and slender is better?

The very Best in the World for the bits you need right here:
http://www.falconacoustics.co.uk/

Have fun! It's a very fulfilling hobby, and we're all anxious to see how your project unfolds.
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Music is food for the soul.
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SaSi
Senior Contributor 200+


Joined: 24 Aug 2008
Posts: 223

PostPosted: Sun Mar 20, 2011 6:26 pm    Post subject: Reply with quote

The drivers you have are the ingredients of a KEF 104 or 104ab. That particular version of the B200 works well with an ABR so I would assume it shouldn't be used in a sealed box. Check the low frequency excursion simulations.

Perhaps look for a pair of B139 passive radiators and appropriate crossover and build along the design of the 104?
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audiolabtower
VIP Contributor 500+


Joined: 06 Jan 2009
Posts: 544

PostPosted: Sun Mar 20, 2011 7:27 pm    Post subject: Reply with quote

Actually the 1039 was used successfully in the original 103, a closed box without ABR slightly smaller than the 104 with rotatable baffle, which got better marks for colouration than the 104 in the original 1st Hi-Fi Choice test of 80 or 90 speakers by the great (and lamented) Angus McKenzie. Both were top recommendations, 104 for pop and 103 for classical/acoustic).
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