Need help with Focal 7K415 build

heinz1964 · 5th February 2010, 11:17 AM

hi

I have 4 Focal 7K415 drivers wich I would like to make a 2.5 way or maybe a 3.5 way speaker.

For the mid and treble I have different options. For now Tangband 4W1320 fullrange. Later A small coax. Planning to crossover at 200 - 400 HZ. Using a Hypex 2.100 digital amp/DSP.

Is it possible to go below 35 Hz with these drivers?

First problem is the cabinet type. I would prefere anything else than a bassreflex enclosure.

Maybe a TL or closed cabinet type. I don't know how to calculate a TL and simulations of the closed box shows Fs (-3db) of 80 Hz.

Specs of Focal 7K415

Fd: 32 Hz
Qts: .26
Sd: 163 cm2
Vas 56 l
R 8 ohm

erickalan77 · 26th June 2011, 08:51 AM

did that project work out ? do you want to sell a pair or the four 7K415 ? Do you know where to get some ?
~e~

5th February 2010, 11:17 AM	#1
heinz1964 diyAudio Member Join Date: Jan 2007	Need help with Focal 7K415 build hi I have 4 Focal 7K415 drivers wich I would like to make a 2.5 way or maybe a 3.5 way speaker. For the mid and treble I have different options. For now Tangband 4W1320 fullrange. Later A small coax. Planning to crossover at 200 - 400 HZ. Using a Hypex 2.100 digital amp/DSP. Is it possible to go below 35 Hz with these drivers? First problem is the cabinet type. I would prefere anything else than a bassreflex enclosure. Maybe a TL or closed cabinet type. I don't know how to calculate a TL and simulations of the closed box shows Fs (-3db) of 80 Hz. Specs of Focal 7K415 Fd: 32 Hz Qts: .26 Sd: 163 cm2 Vas 56 l R 8 ohm

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26th June 2011, 08:51 AM	#2
erickalan77 diyAudio Member Join Date: Jun 2009 Location: california	did that project work out ? do you want to sell a pair or the four 7K415 ? Do you know where to get some ? ~e~

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