Visaton ke25sc or Scan-Speac D2905/9500

tsaarts · 20th February 2006, 06:12 PM

I like to build a new speakers but i can't choose a right tweeter. I have read that ke25sc is one of the best and 9500 is also good. Or should i choose something else.
Midbass driver is going to be visaton al170 but it's not firmed.
Hope You cold give me some advices.

Taco · 20th February 2006, 06:25 PM

With both you cannot go wrong. I prefer the Scan Speak, because these softdomes sound very rich and airy. For a more neutral presenation you can consider the ke25sc.

Those AL170 are great, and will make a great speaker with both tweeters. Keep the x-over <= 2000 Hz (with reasonably steep slopes, and place a notch filter on the cone break up/ resonance of the AL170).

Good Luck,
Taco

tsaarts · 20th February 2006, 08:16 PM

I have some arguments why to choose ke25sc.
http://www.visaton.de/vb/showthread.php?threadid=4286
What You think about that? There are filter scheme for ke25sc & al170 ,but there are not included not notch filter. Should i add it?
Graph seems ok without that.

mluyben · 20th March 2006, 07:23 AM

A bit late but still...
A notch is not needed for the tweeter as it incorporates an acoustic filter membrame inside.
The woofer already has a correction circuit in the above diagram. So this should work fine.

borys · 1st September 2006, 06:47 PM

tsaarts

I'm considering the same speakers as you (AL170 & ke25sc). If you already have this speakers please write somethink about them.

omba · 2nd September 2006, 03:28 AM

http://www.visaton.de/vb/showthread.php?threadid=4286

The three 1micro F caps in series and the 2.2mH inductor work as a notch filter, so you don't need to add it.

borys · 2nd September 2006, 10:22 AM

"The three 1micro F caps in series and the 2.2mH inductor work as a notch filter, so you don't need to add it."

This I know,but I'm not sure about use the ke25sc at 2,5kHz (2k) crossover point, it has fs about 1,2. Maybe it will be ok, but at 2k THD increase with spl (2 harmonic). I had this drivers but never spliced each other. I'm considering L18rnx/p as well but price in Poland is aprox 100E.
If somebody has already build speakers using visatons al170+ke25sc please write some listening impressions. Thanks !!!

mluyben · 2nd September 2006, 02:20 PM

I don't know where you got th info on the fs of the KE25SC but as far as I know it has an fs at 800hz.
I'm using it in a 3way with the Al200 and TI100 and have a X-over at about 2Khz and this works just fine. Visaton itself uses this tweeter also with a x-over at 2Khz.
The KE25SC also has a LRC element inside to compensate for impedance. So no compensation network needed for this also.

borys · 2nd September 2006, 05:07 PM

mluyben

Fs is my meas is 1192Hz :P
I have no experience with KE25sc, If you use it at 2k crossover point and its fine than everything schould be ok. Could you meas harmonic distortion at 2k, please ?? (If you can certainly).

borys · 8th September 2006, 04:02 PM

I have bought KE25SC and AL170 for my next floor stands. Now speakers are workink with crossover which is below. The front of the loudspeakers box can be at 10-15deg.

This are great speakers in good value.

20th February 2006, 06:12 PM	#1
tsaarts diyAudio Member Join Date: Dec 2005 Location: pärnu	Visaton ke25sc or Scan-Speac D2905/9500 I like to build a new speakers but i can't choose a right tweeter. I have read that ke25sc is one of the best and 9500 is also good. Or should i choose something else. Midbass driver is going to be visaton al170 but it's not firmed. Hope You cold give me some advices.

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20th February 2006, 06:25 PM	#2
Taco diyAudio Member Join Date: Nov 2002 Location: Place in the Netherlands	With both you cannot go wrong. I prefer the Scan Speak, because these softdomes sound very rich and airy. For a more neutral presenation you can consider the ke25sc. Those AL170 are great, and will make a great speaker with both tweeters. Keep the x-over <= 2000 Hz (with reasonably steep slopes, and place a notch filter on the cone break up/ resonance of the AL170). Good Luck, Taco

20th February 2006, 08:16 PM	#3
tsaarts diyAudio Member Join Date: Dec 2005 Location: pärnu	I have some arguments why to choose ke25sc. http://www.visaton.de/vb/showthread.php?threadid=4286 What You think about that? There are filter scheme for ke25sc & al170 ,but there are not included not notch filter. Should i add it? Graph seems ok without that.

20th March 2006, 07:23 AM	#4
mluyben diyAudio Member Join Date: Mar 2006 Location: Grou	A bit late but still... A notch is not needed for the tweeter as it incorporates an acoustic filter membrame inside. The woofer already has a correction circuit in the above diagram. So this should work fine.

1st September 2006, 06:47 PM	#5
borys diyAudio Member Join Date: Feb 2005 Location: Krakow	tsaarts I'm considering the same speakers as you (AL170 & ke25sc). If you already have this speakers please write somethink about them.

2nd September 2006, 03:28 AM	#6
omba diyAudio Member Join Date: Aug 2003 Location: Japan	http://www.visaton.de/vb/showthread.php?threadid=4286 The three 1micro F caps in series and the 2.2mH inductor work as a notch filter, so you don't need to add it.

2nd September 2006, 10:22 AM	#7
borys diyAudio Member Join Date: Feb 2005 Location: Krakow	"The three 1micro F caps in series and the 2.2mH inductor work as a notch filter, so you don't need to add it." This I know,but I'm not sure about use the ke25sc at 2,5kHz (2k) crossover point, it has fs about 1,2. Maybe it will be ok, but at 2k THD increase with spl (2 harmonic). I had this drivers but never spliced each other. I'm considering L18rnx/p as well but price in Poland is aprox 100E. If somebody has already build speakers using visatons al170+ke25sc please write some listening impressions. Thanks !!!

2nd September 2006, 02:20 PM	#8
mluyben diyAudio Member Join Date: Mar 2006 Location: Grou	I don't know where you got th info on the fs of the KE25SC but as far as I know it has an fs at 800hz. I'm using it in a 3way with the Al200 and TI100 and have a X-over at about 2Khz and this works just fine. Visaton itself uses this tweeter also with a x-over at 2Khz. The KE25SC also has a LRC element inside to compensate for impedance. So no compensation network needed for this also.

2nd September 2006, 05:07 PM	#9
borys diyAudio Member Join Date: Feb 2005 Location: Krakow	mluyben Fs is my meas is 1192Hz :P I have no experience with KE25sc, If you use it at 2k crossover point and its fine than everything schould be ok. Could you meas harmonic distortion at 2k, please ?? (If you can certainly).

8th September 2006, 04:02 PM	#10
borys diyAudio Member Join Date: Feb 2005 Location: Krakow	I have bought KE25SC and AL170 for my next floor stands. Now speakers are workink with crossover which is below. The front of the loudspeakers box can be at 10-15deg. This are great speakers in good value.

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