BIB with FF225K+FT17H

testarossa2k · 18th November 2007, 01:54 PM

Hello,

finally they replaced the faulty FF225K with new one.

I had to do some modification to reduce the vibration. I discovered that the wood I used is so weak that the FE206E previously installed was vibrating itself.

testarossa2k · 18th November 2007, 08:03 PM

Well, after some time of listening.

Huge soundstage
Highs and medium not hard as the FE206E
A lot of bass, lot more than FE206E

If you turn the volume more than normal volume with some heavy bass cd( there aren't many) you hear distortion. I minimized distortion with the position of the speaker, more angle, so you're little bit out of axes.

I'm using it with 1,5 cap. But you cannot cross by ear with this combination of drivers. Infact I'm designing a crossover.Without a crossover the frequency response is not linear. I hope that I don't loose to much soundstage with a more flat response.

With second order crossover

This one is a 1st order

I will try first the 1st order crossover, because it less expensive.

Scottmoose · 18th November 2007, 09:25 PM

Personally I wouldn't try crossing over until at least 4Khz. Keep it out of the telephone band. The 225 is fine across this region.

badman · 19th November 2007, 12:49 AM

Lot of people ignore it, seemingly based upon the xmax spec. Great driver

testarossa2k · 19th November 2007, 07:29 AM

I want to cross it at 6400, to have a flat response
At least it has to be crossed over 5000hz(raccomended by fostex), otherwise I risk to burn it and there's to much distortion.

Do you think liming the angle of the panel where the driver's are mounted will decrease the diffaction?

18th November 2007, 01:54 PM	#1
testarossa2k diyAudio Member Join Date: Dec 2005 Location: Bologna	BIB with FF225K+FT17H Hello, finally they replaced the faulty FF225K with new one. I had to do some modification to reduce the vibration. I discovered that the wood I used is so weak that the FE206E previously installed was vibrating itself.

19th November 2007, 12:49 AM	#4
badman Custom Title diyAudio Member Join Date: Sep 2003 Location: Sunny Tustin, SoCal	Nice to see this driver getting used Lot of people ignore it, seemingly based upon the xmax spec. Great driver __________________ I write for www.enjoythemusic.com in the DIY section. You may find yourself getting a preview of a project in-progress. Be warned!

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18th November 2007, 08:03 PM	#2
testarossa2k diyAudio Member Join Date: Dec 2005 Location: Bologna	Well, after some time of listening. Huge soundstage Highs and medium not hard as the FE206E A lot of bass, lot more than FE206E If you turn the volume more than normal volume with some heavy bass cd( there aren't many) you hear distortion. I minimized distortion with the position of the speaker, more angle, so you're little bit out of axes. I'm using it with 1,5 cap. But you cannot cross by ear with this combination of drivers. Infact I'm designing a crossover.Without a crossover the frequency response is not linear. I hope that I don't loose to much soundstage with a more flat response. With second order crossover This one is a 1st order I will try first the 1st order crossover, because it less expensive.

18th November 2007, 09:25 PM	#3
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	Personally I wouldn't try crossing over until at least 4Khz. Keep it out of the telephone band. The 225 is fine across this region.

19th November 2007, 07:29 AM	#5
testarossa2k diyAudio Member Join Date: Dec 2005 Location: Bologna	I want to cross it at 6400, to have a flat response At least it has to be crossed over 5000hz(raccomended by fostex), otherwise I risk to burn it and there's to much distortion. Do you think liming the angle of the panel where the driver's are mounted will decrease the diffaction?

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