P17WJ and D27TG into a floorstander-advice. - diyAudio
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Old 21st February 2004, 10:25 AM   #1
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Default P17WJ and D27TG into a floorstander-advice.

After a loooooooooooooooooooong struggle finally
I 've got a pair of vifa P17WJ and D27's...
Next question is what to do with them...
I am thinking of a floorstander off the moment and later might do a TL...
mucking around with software ...these are the alignments i got...

1) 25L tuned to 39hz
2) 22L tuned to around 37hz.

Question is which alignment should i choose...

ajju.
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Old 21st February 2004, 10:33 AM   #2
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Default And

The P17 starts rolling off at around 2K and the D27 at around 1k
So i plan to cross them over at around 2k...and i intend to design and execute the crossover by myself..

I am planning to put a second order section for the tweeter and a first order section for the lpf...
I've tried simulatiing something in SPICE although wont be close to real system...
can someone comment on the results...

This is the crrossover i've been simulating......
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Old 21st February 2004, 10:40 AM   #3
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And this is the response curve i got with pure resistive loads..!

Could some one comment on these...!

thanx
ajju
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Old 21st February 2004, 10:49 AM   #4
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Now in the spice simulation, if i reppace the simple load resistor (the Speaker) with a simple model of the speaker will the results be more predictible...?

If so does any one have a model ready which i can just drag and drop and change the values...!!
Should be interesting...
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Old 21st February 2004, 11:20 AM   #5
sreten is offline sreten  United Kingdom
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try this cabinet or similar :
http://home.hetnet.nl/~geenius/Tempo.html

with this crossover and d27 mods:
http://www.audiodiycentral.com/sd200_johnk.shtml

I like overdamped reflexes that can utilise room gain.

sreten.
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Old 21st February 2004, 11:39 AM   #6
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Hi, this is my Vifa Speaker if you want i have schematic of the filter and the wood.

Sorry for my english....

Maarten
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Old 21st February 2004, 03:51 PM   #7
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Very nice Maarten,
Yes, please do post your schems. I'm sure I speak for many. Thank you.
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Old 21st February 2004, 04:05 PM   #8
Vivek is offline Vivek  India
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I am planning a floorstander with Vifa TC18WG49 and D27TG0506. Still wondering whether to make it ported or sealed.

Ajju, did you buy the drivers from Shiva?
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Old 21st February 2004, 04:51 PM   #9
fireman is offline fireman  Canada
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Quote:
Originally posted by maartentje
Hi, this is my Vifa Speaker if you want i have schematic of the filter and the wood.

Sorry for my english....

Maarten
This is definitely something I'd like to build in the future. Please post your schematics.
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Old 21st February 2004, 06:43 PM   #10
sreten is offline sreten  United Kingdom
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Just note JK is considered somewhat of a crossover
guru, so ignore his design at your peril, it is likely to
be as good as your going to get.

sreten.
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