Recommendation for a crossover choke

murphythecat8 · 24th December 2012, 09:16 PM

hi
I need two 0.47mH chokes. They need to be aircore and decently low DCR. I have a small budget. Any recommendation?

for your information, my crossover is:
For the Tweeter the resistors are 4R7 in series and 6R8 in parallel. Choke is 0.47mH and Capacitor is 1.5uF.

For the Midrange the RC across the driver is 12 Ohm and 4.7uF. The crossover Capacitor and Inductor for the Lowpass are 2.2uF and 0.5mH.

thanks

sreten · 24th December 2012, 09:40 PM

Hi, Beer budget is wind them yourself using a inductor calculator, rgds, sreten.

murphythecat8 · 24th December 2012, 10:50 PM

well, lets say cheap wine budget. Dont want to do my own chokes... there a panoply of different chokes to choose from. Any recommended brand?

ScottG · 24th December 2012, 10:53 PM

When it comes to "cheap" - just go with whatever brand will give you the right value at the right price.

Most of the differences come down to resistance.

murphythecat8 · 24th December 2012, 11:08 PM

really? so what type of resistor to use?

ScottG · 02:27 AM

Quote:

Originally Posted by murphythecat8

really? so what type of resistor to use?

..the resistance of the coil itself.

I think for inductors (beyond it's own resistance) it's about mechanical damping - solution there is just "pot" the thing in some higher temp. wax (..or resin, but I'd prefer the wax).

-resistors (beyond resistance) can and do sound different depending on the application, again likely a mechanical damping effect.

murphythecat8 · 25th December 2012, 03:36 AM

Okay, I thought you mean that the resistors in my crossover need to be of high quality? Is that also the case, like in the tube amp, where the cathode ressitor must be different then the plate resistors, ect

can you help me to find good chokes: they need to be aircore and decently low DCR. Theres too much choice at newark, I have no idea which to pick really....

murphythecat8 · 25th December 2012, 03:41 AM

what is a good decent low dcr value?
this is 0.22 ohm, is that decently low?
B82792C2474N315 - EPCOS - CHOKE, QUAD, 0.47MH | Newark/element14 Canada

murphythecat8 · 25th December 2012, 03:47 AM

I ahve 700 result at newark with chokes of 0.47 mh
Your Search Results | Newark/element14 Canada | Results

please somebody help

prairieboy · 25th December 2012, 04:22 AM

Erse has a good selection, prices are good, and shipping to Canada is reasonable.

24th December 2012, 09:16 PM	#1
murphythecat8 diyAudio Member Join Date: Mar 2011 Location: Somewhere in Quebec	Recommendation for a crossover choke hi I need two 0.47mH chokes. They need to be aircore and decently low DCR. I have a small budget. Any recommendation? for your information, my crossover is: For the Tweeter the resistors are 4R7 in series and 6R8 in parallel. Choke is 0.47mH and Capacitor is 1.5uF. For the Midrange the RC across the driver is 12 Ohm and 4.7uF. The crossover Capacitor and Inductor for the Lowpass are 2.2uF and 0.5mH. thanks __________________ Favorites: Electro:Kettel, Aphex Twin, Arca, BOC, James Ferraro, Simon Posford Jazz: Tristano, Coltrane, Monk, Gil Scott, Miles Davis. Rock: Zappa, Hendrix, Bob Marley, Dinosaur Jr.

24th December 2012, 09:40 PM	#2
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	Hi, Beer budget is wind them yourself using a inductor calculator, rgds, sreten. __________________ There is nothing so practical as a really good theory - Ludwig Boltzmann When your only tool is a hammer, every problem looks like a nail - Abraham Maslow

24th December 2012, 10:50 PM	#3
murphythecat8 diyAudio Member Join Date: Mar 2011 Location: Somewhere in Quebec	well, lets say cheap wine budget. Dont want to do my own chokes... there a panoply of different chokes to choose from. Any recommended brand? __________________ Favorites: Electro:Kettel, Aphex Twin, Arca, BOC, James Ferraro, Simon Posford Jazz: Tristano, Coltrane, Monk, Gil Scott, Miles Davis. Rock: Zappa, Hendrix, Bob Marley, Dinosaur Jr.

24th December 2012, 10:53 PM	#4
ScottG diyAudio Member Join Date: Feb 2003 Location: US	When it comes to "cheap" - just go with whatever brand will give you the right value at the right price. Most of the differences come down to resistance. __________________ perspective is everything

24th December 2012, 11:08 PM	#5
murphythecat8 diyAudio Member Join Date: Mar 2011 Location: Somewhere in Quebec	really? so what type of resistor to use? __________________ Favorites: Electro:Kettel, Aphex Twin, Arca, BOC, James Ferraro, Simon Posford Jazz: Tristano, Coltrane, Monk, Gil Scott, Miles Davis. Rock: Zappa, Hendrix, Bob Marley, Dinosaur Jr.


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25th December 2012, 03:36 AM	#7
murphythecat8 diyAudio Member Join Date: Mar 2011 Location: Somewhere in Quebec	Okay, I thought you mean that the resistors in my crossover need to be of high quality? Is that also the case, like in the tube amp, where the cathode ressitor must be different then the plate resistors, ect can you help me to find good chokes: they need to be aircore and decently low DCR. Theres too much choice at newark, I have no idea which to pick really.... __________________ Favorites: Electro:Kettel, Aphex Twin, Arca, BOC, James Ferraro, Simon Posford Jazz: Tristano, Coltrane, Monk, Gil Scott, Miles Davis. Rock: Zappa, Hendrix, Bob Marley, Dinosaur Jr.

25th December 2012, 03:41 AM	#8
murphythecat8 diyAudio Member Join Date: Mar 2011 Location: Somewhere in Quebec	what is a good decent low dcr value? this is 0.22 ohm, is that decently low? B82792C2474N315 - EPCOS - CHOKE, QUAD, 0.47MH \| Newark/element14 Canada __________________ Favorites: Electro:Kettel, Aphex Twin, Arca, BOC, James Ferraro, Simon Posford Jazz: Tristano, Coltrane, Monk, Gil Scott, Miles Davis. Rock: Zappa, Hendrix, Bob Marley, Dinosaur Jr.

25th December 2012, 03:47 AM	#9
murphythecat8 diyAudio Member Join Date: Mar 2011 Location: Somewhere in Quebec	I ahve 700 result at newark with chokes of 0.47 mh Your Search Results \| Newark/element14 Canada \| Results please somebody help __________________ Favorites: Electro:Kettel, Aphex Twin, Arca, BOC, James Ferraro, Simon Posford Jazz: Tristano, Coltrane, Monk, Gil Scott, Miles Davis. Rock: Zappa, Hendrix, Bob Marley, Dinosaur Jr.

25th December 2012, 04:22 AM	#10
prairieboy diyAudio Member Join Date: Nov 2010	Erse has a good selection, prices are good, and shipping to Canada is reasonable.

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