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-   -   designing crossover and enclosure without a data sheet.Help please (http://www.diyaudio.com/forums/multi-way/236200-designing-crossover-enclosure-without-data-sheet-help-please.html)

WIGANWEZ 18th May 2013 08:56 PM

designing crossover and enclosure without a data sheet.Help please
 
hi all

I have just got these drivers TC14wg0508 i have done endless emails and research on these and i am beginning to loose hope.

they are made by VIFA audio i have emailed them for a data sheet and they have never replied to me. the only spec i have is something i found on a website that the closest i have got but its the WG06 not WG05 posted below

any idea how i would calculate crossovers and box volume (on about building a 2 way enclosure tomorrow)

hope someone can help

Many thanks

Wez

Google Translate

http://www.nasotec.com/acecart/bin/b...a/qna/1877.gif

WIGANWEZ 18th May 2013 10:37 PM

the speakers are 4" drivers if that helps.

WIGANWEZ 18th May 2013 10:46 PM

also would anyone agree on a 7.5Litre enclosure based on what we know. basically 60-80w 4 inch driver with matching tweeter. will check back in morning.this is al for my final college project so immense pressure right now in an area im no expert in :( cheers

wintermute 18th May 2013 11:50 PM

If you don't have the T/S params, your best bet is to measure them yourself.

If you have a desktop computer, then the built in sound card should be adequate. for a laptop an external USB sound card is probably needed (as laptops generally don't have a line in).

I use REW for software. available here --> REW - Room EQ Wizard Room Acoustics Software

The help files for REW should have info on making a suitable cable and doing the measurements.

Tony.

system7 19th May 2013 12:51 AM

Quote:

Originally Posted by WIGANWEZ (Post 3496223)
the speakers are 4" drivers if that helps.

I very much doubt it...;)

More like 5.5" drivers in the 149mm rebate Vifa tradition:
Vifa Tc14wg49-08 Polymer frame
Vifa PL14WJ-09-08

http://img153.imageshack.us/img153/1...pl14wj0908.jpg

Paper (?) drivers suited to 9L closed box by the look of the Vas of 9L and Qts of 0.51.

This Troels Gravesen design would be about right electrically:
Vifa PL14WJ-

WIGANWEZ 19th May 2013 07:51 AM

Quote:

Originally Posted by system7 (Post 3496279)
I very much doubt it...;)

More like 5.5" drivers in the 149mm rebate Vifa tradition:

Vifa PL14WJ-


I was going of cone area.the drivers are from Rouark audio who have kindly donated a set of drivers and tweeters that would match my college amplifier project. the 5.5" driver shown above looks much cheaper in design than the set of vifa i have.they have more of a shiny plastic coating with a wooden dome dust cap (i think there called that :confused:) was hoping to make a two way ported enclosure today but will have to put it on hold till i can sort the dimensions.don't fancy ordering the birch ply for it to be all wrong :D

system7 19th May 2013 09:20 AM

It's called a phase plug, and is usually made of plastic... :snoopy:

http://img35.imageshack.us/img35/5619/ruarkepilogue.jpg

Are we looking at drivers that resemble these in the Ruark Epilogue variants? :magnify:

Do the cones look like polymer or paper from behind?

WIGANWEZ 19th May 2013 09:33 AM

they are the ones.i feel so dumb right now :confused:. thanks for that thought id hit a dead end.off to research on Ruark Epilogue. am i still looking at a enclosure like mentioned below

Vifa PL14WJ-

WIGANWEZ 19th May 2013 09:35 AM

i would say polymer im off home in a minute so will check when in :)

AllenB 19th May 2013 09:56 AM

It's hard to say that you wouldn't need to make slight crossover adjustments with a new speaker based on visual inspection over a forum, despite similarities with another design. That said, I believe System7 will get you as close as one could.


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