Zobel Network

JiggaD369 · 4th May 2005, 02:26 AM

Hi im building CAT5 speaker cables and im mostly likely gonna be installing a zobel network. my question is what resistor and cap do i need for my speakers?

here are the specs for them...

http://www.dmc-electronics.com/descr...mage%204T.html

also, when im installing the network, how and where do i install it?

Bill Fitzpatrick · 4th May 2005, 02:50 AM

I don't see the need for a zobel. What makes you think you need one?

JiggaD369 · 4th May 2005, 03:56 AM

the cat5 cable im making is 27 pair of 23 awg wire and it has a running length of 10.5 feet.

Bill Fitzpatrick · 4th May 2005, 05:05 AM

and?

JiggaD369 · 4th May 2005, 02:40 PM

alot of people have experienced their amp oscillating at 8 feet where mine is longer.

richie00boy · 4th May 2005, 03:21 PM

That's because the scrawny twisted pairs presents a capacitive load to the amp. To protect against that you need an inductor in the output of your amp, not a zobel network in parallel with it. Or just use normal beefy zip cord

JiggaD369 · 4th May 2005, 04:51 PM

well i spent over two days makin this cable and im def using it. lol. what kind of inductor and how would i place it?

Bill Fitzpatrick · 4th May 2005, 05:54 PM

About 10 turns of 14ga. insulated electrical wire wound around a 10 ohm, 5 watt resistor should do the trick. Strip the wire leads and solder to the resistor. See illustration.

Connect one end of this unit to the + amp output and the + speaker wire to the other end.

JiggaD369 · 4th May 2005, 09:18 PM

do i need buy a specific type of resistor like cermic, carbon film, etc?

Bill Fitzpatrick · 5th May 2005, 12:27 AM

A regular 5w wire wound "sand" (read ceramic cased) resistor would do for me. Others might say you need something better.

4th May 2005, 02:26 AM	#1
JiggaD369 diyAudio Member Join Date: Apr 2005 Location: New Jersey	Zobel Netwrok Hi im building CAT5 speaker cables and im mostly likely gonna be installing a zobel network. my question is what resistor and cap do i need for my speakers? here are the specs for them... http://www.dmc-electronics.com/descr...mage%204T.html also, when im installing the network, how and where do i install it?

4th May 2005, 03:21 PM	#6
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	That's because the scrawny twisted pairs presents a capacitive load to the amp. To protect against that you need an inductor in the output of your amp, not a zobel network in parallel with it. Or just use normal beefy zip cord __________________ www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, modules and more.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Zobel network.....Better bass? Yes or No	HawkeyeStoob	Chip Amps	28	28th October 2017 01:12 PM
zobel network and cat5	reddish75	Chip Amps	5	17th January 2007 09:31 PM
Zobel Network question	theAnonymous1	Multi-Way	8	13th May 2004 05:27 AM
Zobel Network	nuttinbutSQ	Multi-Way	6	16th March 2004 08:19 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

4th May 2005, 02:50 AM	#2
Bill Fitzpatrick diyAudio Member Join Date: Jun 2001 Location: Eugene, OR	I don't see the need for a zobel. What makes you think you need one?

4th May 2005, 03:56 AM	#3
JiggaD369 diyAudio Member Join Date: Apr 2005 Location: New Jersey	the cat5 cable im making is 27 pair of 23 awg wire and it has a running length of 10.5 feet.

4th May 2005, 05:05 AM	#4
Bill Fitzpatrick diyAudio Member Join Date: Jun 2001 Location: Eugene, OR	and?

4th May 2005, 02:40 PM	#5
JiggaD369 diyAudio Member Join Date: Apr 2005 Location: New Jersey	alot of people have experienced their amp oscillating at 8 feet where mine is longer.

4th May 2005, 04:51 PM	#7
JiggaD369 diyAudio Member Join Date: Apr 2005 Location: New Jersey	well i spent over two days makin this cable and im def using it. lol. what kind of inductor and how would i place it?

4th May 2005, 09:18 PM	#9
JiggaD369 diyAudio Member Join Date: Apr 2005 Location: New Jersey	do i need buy a specific type of resistor like cermic, carbon film, etc?

5th May 2005, 12:27 AM	#10
Bill Fitzpatrick diyAudio Member Join Date: Jun 2001 Location: Eugene, OR	A regular 5w wire wound "sand" (read ceramic cased) resistor would do for me. Others might say you need something better.