Quick Question About a Crossover

Wyloch · 2nd March 2005, 04:55 AM

Newb here. I'm building these:

http://www.wadsnet.com/~dtenney/dayton_8MTM.htm

He says to replace the 72uF with a paralleled 50uF and 22uF, but there's no 22uF in his parts list. Anyone got a recommendation of a ~72uF resistor that would work in that speaker?

454Casull · 2nd March 2005, 05:00 AM

No idea, but I think you meant to say capacitor instead of resistor.

Wyloch · 2nd March 2005, 05:10 AM

Yes I did. Thank you.

Let me take this opportunity to be more specific. If you scroll down that page, there is a circuit diagram followed by some Notes. These Notes tell you which parts from the Part List (further down the page) to use in the circuit, because the parts in the part list vary slightly from the values on the circuit diagram.

Well, everything matches up and I understand where to make tradeouts except the Note that says to "Parallel the 50uf and the 22uF to make the 72uF cap." The Part List has a 50uF, but does not have a 22uF listed, unless I am a total moron.

SO, anyone have a recommendation on what 22uF cap would work in conjunction with everything else on that Part List?

Also - would this revised diagram be correct?:

[IMG]www4.ncsu.edu/~whbuchan/buchananaudio/revised.jpg[/IMG]

Thanks a ton

Bill Fitzpatrick · 2nd March 2005, 05:18 AM

He just forgot to list it. From the same PE page as you order the 50mfd get a couple of 22mfds.

Wyloch · 2nd March 2005, 05:31 AM

Awesome. Thanks for the reply - I found it in the list. And how did my diagram look? I guess my other question is: there are two circuit diagrams, each with -V+ on them. I assume that's where you hook the input into? And since there are two circuits, do I just run two wires from each input terminal, one going to each circuit?

Also, what wire should I use to do that? Solid or stranded? Copper? What guage?

(first speaker foray here...)

Bill Fitzpatrick · 2nd March 2005, 06:00 AM

Correct.
Copper, stranded, 18ga.(zip cord is fine)

2nd March 2005, 04:55 AM	#1
Wyloch diyAudio Member Join Date: Dec 2004 Location: Classified	Quick Question About a Crossover Newb here. I'm building these: http://www.wadsnet.com/~dtenney/dayton_8MTM.htm He says to replace the 72uF with a paralleled 50uF and 22uF, but there's no 22uF in his parts list. Anyone got a recommendation of a ~72uF resistor that would work in that speaker?

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2nd March 2005, 05:00 AM	#2
454Casull diyAudio Member Join Date: Jan 2004 Location: Toronto, ON, Canada	No idea, but I think you meant to say capacitor instead of resistor.

2nd March 2005, 05:10 AM	#3
Wyloch diyAudio Member Join Date: Dec 2004 Location: Classified	Yes I did. Thank you. Let me take this opportunity to be more specific. If you scroll down that page, there is a circuit diagram followed by some Notes. These Notes tell you which parts from the Part List (further down the page) to use in the circuit, because the parts in the part list vary slightly from the values on the circuit diagram. Well, everything matches up and I understand where to make tradeouts except the Note that says to "Parallel the 50uf and the 22uF to make the 72uF cap." The Part List has a 50uF, but does not have a 22uF listed, unless I am a total moron. SO, anyone have a recommendation on what 22uF cap would work in conjunction with everything else on that Part List? Also - would this revised diagram be correct?: [IMG]www4.ncsu.edu/~whbuchan/buchananaudio/revised.jpg[/IMG] Thanks a ton

2nd March 2005, 05:18 AM	#4
Bill Fitzpatrick diyAudio Member Join Date: Jun 2001 Location: Eugene, OR	He just forgot to list it. From the same PE page as you order the 50mfd get a couple of 22mfds.

2nd March 2005, 05:31 AM	#5
Wyloch diyAudio Member Join Date: Dec 2004 Location: Classified	Awesome. Thanks for the reply - I found it in the list. And how did my diagram look? I guess my other question is: there are two circuit diagrams, each with -V+ on them. I assume that's where you hook the input into? And since there are two circuits, do I just run two wires from each input terminal, one going to each circuit? Also, what wire should I use to do that? Solid or stranded? Copper? What guage? (first speaker foray here...)

2nd March 2005, 06:00 AM	#6
Bill Fitzpatrick diyAudio Member Join Date: Jun 2001 Location: Eugene, OR	Correct. Copper, stranded, 18ga.(zip cord is fine)

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