Focal Design PLEASE HELP>!

[jleaman]

Ok so i won some drivers off ebay. My fav brand and make. FOCAL. yes.. now to see if any one can help me complete a box design Towers. and ported.

i got 4 x focal 7v412jm's
and 2 x tc120tdxt's.

Can any one help. ?

 

[planet10]

Re: Focal Design PLEASE HELP>!

i got 4 x focal 7v412jm's
and 2 x tc120tdxt's.
Can any one help. ? [/B]

Specs?

dave

 

[jleaman]

here is alink so far that i have found im lookin right now.

 

[jleaman]

opps..

http://www.speakercity.com/specs/focal_ts.shtml

 

[claudio]

hello,
on Focal HP doesn't exist this model:http://www.focal-jmlab.fr/fr/compo/V.htm

Maybe it is out of production?

Claudio

 

[jleaman]

yeah they are out of production last year Still great drivers brand new never used still in original boxes.

 

[planet10]

With the bass drivers' low Q it looks like an ML-TL or an aperiodic box might be the answer (you won't find me recommending a vented box very often)

And of course i'd build it as a bi-pole -- you did get 4 🙂

dave

 

[jleaman]

well dave im going sealed. and ill do what you recomend. Also can you draw up a little diag and post it for me. you can describe it till the cows come home. illl never understand ya. but you draw a simple desighn ILll totaly know what your saying.

PWEEEEESSSSSSSEE
PWEEEEESSSSSSSEE
PWEEEEESSSSSSSEE
PWEEEEESSSSSSSEE DAVE!!

 

[jleaman]

PWEEEEESSSSSSSEE
PWEEEEESSSSSSSEE
PWEEEEESSSSSSSEE
PWEEEEESSSSSSSEE DAVE!!

ahemm...

 

[planet10]

PWEEEEESSSSSSSEE
PWEEEEESSSSSSSEE
PWEEEEESSSSSSSEE
PWEEEEESSSSSSSEE DAVE!!

ahemm...

yes jason, but not in the next couple hrs or so...

dave

 

[jleaman]

oh ok . sorry..

 

[planet10]

What are the driver's physical dimensions?

dave

 

[jleaman]

i dont know ill have th drivers in a few weeks.. do you want me to ask? the guy..

 

[planet10]

i dont know ill have th drivers in a few weeks.. do you want me to ask? the guy..

geez... i thot you were going to start building these tomorrow LOL.

the dimensions would allow the picture to be prettier.

dave

 

[jleaman]

i was asking for picture to get ruff idea for what your taling qbout then. when i get them ill post ever thing i know about them to finnish them off and start designing x-overs.

 

[planet10]

Ok, spud, here is the initial box -- based on golden ratio dimensions. With some fiddling we'll make it reach the floor.

dave

 

[planet10]

And here is the response based on the T/S in the link you posted. F10 of 42... should be pretty good once you put it in a room... and it has no bafflestep loss.

dave

 

[jleaman]

and this will sound good.?

 

[planet10]

and this will sound good.?

Depends on how good you do on the XO (and a bunch of other details 🙂)

dave

 

[planet10]

Martin King's Focal TL uses similar drivers, that might give you some ideas.

The back driver is run FR or can be rolled off 1st order at the BS frequency, about 465 Hz.

dave