Crossover question

anonomouse · 12:12 AM

Howdy all,

I'm building my first set of speakers, zaph ZMV5s and I'm a bit hung up on the crossovers. Specifically I can't seem to find all the right parts.

He calls for:

15 AWG Steel Laminate 2.70 mH .164 DCR
5.0 ohm Eagle 10 Watt Metal Oxid
2.0 ohms Eagle 10 Watt Metal Oxide

I am only able to find Steel Laminate 2.7 mH 15 AWG Inductors .168 DCR, will this work?

Any tips on replacements/alternative sources for these?

Cal Weldon · 2nd July 2011, 12:10 AM

The difference in the chokes is 4/1000 of an ohm. I think if you measure them you find more variance than that so consider the published difference immaterial. I'll let others chip in on the resistors. Madisound has them.

http://www.madisound.com/about/resistors.php

EDIT: I see they're out of stock on the Eagles. I've not had any problems with the Mundorf MOX type.

http://www.e-speakers.com/-strse-394...ors/Detail.bok

AllenB · 2nd July 2011, 05:22 AM

Yeah, agree with Cal on the inductor. Any 10W resistor type in those values will get you started. I believe the metal oxide variety is just a personal preference.

jmillerdoc · 2nd July 2011, 05:27 AM

Parts ConneXion - The authority on hi-fi DIY parts and components has plenty of resistors. I prefer Mills MRA5 series. You can also buy Mills at www.soniccraft.com, they are much faster in processing and shipping than partsconnexion.

anonomouse · 2nd July 2011, 07:22 PM

Thanks all I'll do what you guys say. I think i might combine a few resistors to get the desired resistance. Looks like I forgot my high school physics.

DrDyna · 2nd July 2011, 07:41 PM

I just ordered some stuff from Erse I'm not sure how good they are about shipping quickly yet, but their prices seem great.

jeffreybehr · 3rd July 2011, 07:09 PM

Quote:

Originally Posted by jmillerdoc

Parts ConneXion - The authority on hi-fi DIY parts and components has plenty of resistors. I prefer Mills MRA5 series. You can also buy Mills at www.soniccraft.com, they are much faster in processing and shipping than partsconnexion.

I too prefer Mills NI WW resistors, but if the designer specd 10-Watter, I believe 12-Watt Mills MRA-12s would be a safer choice. And I love Sonic Craft for their same-say shipping.

anonomouse · 07:43 PM

are there not resistors with the exact same specs as listed in the BOM by another manufacturer or does each man. try to create a niche for a certain market?

1st July 2011, 11:43 PM	#1
anonomouse diyAudio Member Join Date: Jan 2011	Crossover question Howdy all, I'm building my first set of speakers, zaph ZMV5s and I'm a bit hung up on the crossovers. Specifically I can't seem to find all the right parts. He calls for: 15 AWG Steel Laminate 2.70 mH .164 DCR 5.0 ohm Eagle 10 Watt Metal Oxid 2.0 ohms Eagle 10 Watt Metal Oxide I am only able to find Steel Laminate 2.7 mH 15 AWG Inductors .168 DCR, will this work? Any tips on replacements/alternative sources for these? Last edited by anonomouse; 2nd July 2011 at 12:12 AM.

2nd July 2011, 12:10 AM	#2
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	The difference in the chokes is 4/1000 of an ohm. I think if you measure them you find more variance than that so consider the published difference immaterial. I'll let others chip in on the resistors. Madisound has them. http://www.madisound.com/about/resistors.php EDIT: I see they're out of stock on the Eagles. I've not had any problems with the Mundorf MOX type. http://www.e-speakers.com/-strse-394...ors/Detail.bok __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

3rd July 2011, 07:25 PM	#8
anonomouse diyAudio Member Join Date: Jan 2011	are there not resistors with the exact same specs as listed in the BOM by another manufacturer or does each man. try to create a niche for a certain market? Last edited by anonomouse; 3rd July 2011 at 07:43 PM.

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2nd July 2011, 05:22 AM	#3
AllenB diyAudio Member Join Date: Oct 2008	Yeah, agree with Cal on the inductor. Any 10W resistor type in those values will get you started. I believe the metal oxide variety is just a personal preference.

2nd July 2011, 05:27 AM	#4
jmillerdoc diyAudio Member Join Date: Mar 2009 Location: Lawton, OK, USA	Parts ConneXion - The authority on hi-fi DIY parts and components has plenty of resistors. I prefer Mills MRA5 series. You can also buy Mills at www.soniccraft.com, they are much faster in processing and shipping than partsconnexion.

2nd July 2011, 07:22 PM	#5
anonomouse diyAudio Member Join Date: Jan 2011	Thanks all I'll do what you guys say. I think i might combine a few resistors to get the desired resistance. Looks like I forgot my high school physics.

2nd July 2011, 07:41 PM	#6
DrDyna diyAudio Member Join Date: May 2007 Blog Entries: 3	I just ordered some stuff from Erse I'm not sure how good they are about shipping quickly yet, but their prices seem great.

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