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Old 28th February 2004, 03:55 PM   #1
pia2o is offline pia2o  Spain
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Question Choosing drivers

Hi.

I'm beginning whith mi first speaker diy project. I decided a pair of boxes about 14l. But I dude with the drivers. For tweeter, the VIfa XT25, cause range extension: the FS 500Hz permit easy crossover cut.

For the mid-woofer, I like the detailed sound of hard cones (magnesium, fiberglass, kevlar...) about 6.5-7". The branches that I can buy here are Vifa, Peerless, Scan-Speak, Monacor & Focal. 50-100$. My candidates are:

Peerless 850439 HDS 164: good frecuency response, without peaks. Good for my box volume, but less diameter than the others, perhaps few bass?

Vifa PL18W0: good volume box too, but the paper cone...

Vifa MG18 or XG18: really like this drivers, But their Vas are high.

Do you think the correct volume box is a minor problem? Any other driver with fiber glass or similar with low Vas?

Thanks.
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Old 28th February 2004, 04:29 PM   #2
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Peerless drivers are renowned for their excellent bass performace, the 850467 HDS w/phase plug is not exemp from this it gives out good wallop. So then would the HDS w/out plug.

The XT25 is a deceptive beast, yes it has a low fs and high power handling so you would think it can do low xovers, but from what I have seen posted about this driver is it most definately sounds better the higher you cross it.
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Old 28th February 2004, 08:30 PM   #3
sreten is offline sreten  United Kingdom
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for your first project you should use any one of the umpteen
designs available for 6.5"/1" combination of drivers.

For hard cones try this :

http://home.hetnet.nl/~geenius/DD8.html

Your very, very, unlikely to design better than this first attempt.

Its fairly straight forward to adapt to internal volumes
10L to 20L and various other bass alignments types.

Though for subwoofer use I advise a very compact sealed box.

Note that the impedance compensation is optional,
Ls,Cs & Rs, and I can't see the point of including it.

sreten.
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