faulty driver?

testarossa2k · 20th September 2007, 08:26 PM

Hello,

I have one Fostex FF225k that could be faulty. The speaker sound distorted. I tried everything with wiring. If you have any ideas..... otherwise I will change the speaker.

thank you

PS
When I turn on the amplifier the speaker emit a low tone bump and has a big cone excursion. The other speaker doesn't have that excursion, but it has the normal middle pitched bump( so normal).

Scottmoose · 20th September 2007, 08:30 PM

Sounds like it's shot to me.

AKN · 20th September 2007, 08:35 PM

Hi testarossa2k,

You have tested to swap channels and tried with another amplifier?

Godzilla · 20th September 2007, 08:41 PM

it may be the amp, the speaker or the source. not too long ago i ordered a replacement 127e because i thought it was blown. The new driver arrived and had the same problem (similar to what you describe). Turned out to be one channel on the CD player.

Check the driver on the side that works and see if it still sounds busted. If its ok, then it's the amp or the source.

Good luck!

Godzilla

testarossa2k · 20th September 2007, 08:43 PM

yes I have swapped channel: same result.....
I also swapped cable
I inverted the phase also

I think changing amplifier will not solve the problem but I'm going to try anyway....
It's shame the ff225k is a fantastic driver when it work...

testarossa2k · 20th September 2007, 08:45 PM

I will try to use the other channel of the player...... great idea..

AKN · 20th September 2007, 08:50 PM

Quote:

yes I have swapped channel: same result.....

Exchanged speaker cables L > R and R > L in either speaker or amplifier end and still problem in the same speaker?

testarossa2k · 20th September 2007, 08:54 PM

I used the cable of the Left speaker, but the problem is still there.

Scottmoose · 20th September 2007, 09:51 PM

Curses. It didn't sound good, from your initial comments. If you've tried all the above, then it sounds like the driver's duff.

testarossa2k · 20th September 2007, 10:11 PM

I tried it with onther amplifier, the t-amp. the same situation. I tried also with the same channel of the cd player that works well with other speaker.

20th September 2007, 08:26 PM	#1
testarossa2k diyAudio Member Join Date: Dec 2005 Location: Bologna	faulty driver? Hello, I have one Fostex FF225k that could be faulty. The speaker sound distorted. I tried everything with wiring. If you have any ideas..... otherwise I will change the speaker. thank you PS When I turn on the amplifier the speaker emit a low tone bump and has a big cone excursion. The other speaker doesn't have that excursion, but it has the normal middle pitched bump( so normal).

20th September 2007, 08:35 PM	#3
AKN Enjoy good sound diyAudio Member Join Date: Aug 2005 Location: In the middle of Sweden	Hi testarossa2k, You have tested to swap channels and tried with another amplifier? __________________ / Anders

20th September 2007, 08:41 PM	#4
Godzilla diyAudio Member Join Date: Nov 2005 Location: New York	it may be the amp, the speaker or the source. not too long ago i ordered a replacement 127e because i thought it was blown. The new driver arrived and had the same problem (similar to what you describe). Turned out to be one channel on the CD player. Check the driver on the side that works and see if it still sounds busted. If its ok, then it's the amp or the source. Good luck! Godzilla __________________ www.zillaaudio.com/bib/bib.asp www.ZillaAudio.com

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20th September 2007, 08:30 PM	#2
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	Sounds like it's shot to me.

20th September 2007, 08:43 PM	#5
testarossa2k diyAudio Member Join Date: Dec 2005 Location: Bologna	yes I have swapped channel: same result..... I also swapped cable I inverted the phase also I think changing amplifier will not solve the problem but I'm going to try anyway.... It's shame the ff225k is a fantastic driver when it work...

20th September 2007, 08:45 PM	#6
testarossa2k diyAudio Member Join Date: Dec 2005 Location: Bologna	I will try to use the other channel of the player...... great idea..

20th September 2007, 08:54 PM	#8
testarossa2k diyAudio Member Join Date: Dec 2005 Location: Bologna	I used the cable of the Left speaker, but the problem is still there.

20th September 2007, 09:51 PM	#9
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	Curses. It didn't sound good, from your initial comments. If you've tried all the above, then it sounds like the driver's duff.

20th September 2007, 10:11 PM	#10
testarossa2k diyAudio Member Join Date: Dec 2005 Location: Bologna	I tried it with onther amplifier, the t-amp. the same situation. I tried also with the same channel of the cd player that works well with other speaker.

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