Tube active low pass crossover

Diy martin · 31st October 2006, 07:30 PM

Hello Diy members,

I am looking for a schematic of a tube active crossover .
I am only going to use the Low pass output ,crossover frec. is 160Hz
Steve Bench has a nice design based on the 6dj8-ecc88
has anyone any experience with this design? Or has anyone built something similar?

All info is welcome.

Peter M. · 2nd November 2006, 10:09 AM

Some interesting links

http://www.tubecad.com/articles_2001...ed_Crossovers/

http://www.tubecad.com/articles_2001...s_and_Filters/

Diogenes · 2nd November 2006, 04:48 PM

I found the following schematic for a 50Hz lowpass tubed crossover (12dB/oct slope) somewhere on the internet a while back. I'm not certain, but I believe the frequency can be changed via the component values by back calculating using the formulae here.

I've dug around the Marchand site some and looked at their manuals. From what I've seen, their tubed crossovers appear to be basically two of the same circuit chained together to create the 24dB LR slope.

- JP

31st October 2006, 07:30 PM	#1
Diy martin diyAudio Member Join Date: Apr 2003 Location: papendrecht	Tube active low pass crossover Hello Diy members, I am looking for a schematic of a tube active crossover . I am only going to use the Low pass output ,crossover frec. is 160Hz Steve Bench has a nice design based on the 6dj8-ecc88 has anyone any experience with this design? Or has anyone built something similar? All info is welcome.

2nd November 2006, 10:09 AM	#2
Peter M. diyAudio Member Join Date: Jan 2005 Location: Østfold	Some interesting links http://www.tubecad.com/articles_2001...ed_Crossovers/ http://www.tubecad.com/articles_2001...s_and_Filters/ __________________ Note to myself: Never again use fingers to check if there still is voltage left in a capacitor...

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2nd November 2006, 04:48 PM	#3
Diogenes diyAudio Member Join Date: Jun 2004 Location: WA	I found the following schematic for a 50Hz lowpass tubed crossover (12dB/oct slope) somewhere on the internet a while back. I'm not certain, but I believe the frequency can be changed via the component values by back calculating using the formulae here. I've dug around the Marchand site some and looked at their manuals. From what I've seen, their tubed crossovers appear to be basically two of the same circuit chained together to create the 24dB LR slope. - JP