This is the crossover I am using for a DIY center speaker.
This is my first so now that I have the parts, I am confused as to which way to wire the crossover components. I know what goes where of course, but for the inductors...Do I use the outside wire for the input and the unside wire for the output to the speaker...visa versa...or does it not matter at all?
http://www.partsexpress.com/projectshowcase/cynosure/crossover.jpg
some pics of what I am talking about. Does the input wire go to the inside or outside wire?
<a href="http://img201.imageshack.us/my.php?image=inductorff5.jpg" target="_blank"><img src="http://img201.imageshack.us/img201/4452/inductorff5.th.jpg" border="0" alt="Free Image Hosting at www.ImageShack.us" /></a>
Thanks everyone,
Dominick
This is my first so now that I have the parts, I am confused as to which way to wire the crossover components. I know what goes where of course, but for the inductors...Do I use the outside wire for the input and the unside wire for the output to the speaker...visa versa...or does it not matter at all?
http://www.partsexpress.com/projectshowcase/cynosure/crossover.jpg
some pics of what I am talking about. Does the input wire go to the inside or outside wire?
An externally hosted image should be here but it was not working when we last tested it.
<a href="http://img201.imageshack.us/my.php?image=inductorff5.jpg" target="_blank"><img src="http://img201.imageshack.us/img201/4452/inductorff5.th.jpg" border="0" alt="Free Image Hosting at www.ImageShack.us" /></a>
Thanks everyone,
Dominick
No, either wire is fine.
For stereo, what the hell make them both the same, but the parasitic elements (winding capacitance, leakage, etc) are very small for most passive devices and can almost always be ignored.
If there are multiple inductors in your design do not place the windings so that they are in line or parallel. 90 degrees is what you want, this means if one is vertical, you can have only three inductors maximum, unless you leave some space. Maybe three or better four times the largest dimension for inductors in alignment, more if you can spare the space.
Two inductors near each other are called a transformer.
For stereo, what the hell make them both the same, but the parasitic elements (winding capacitance, leakage, etc) are very small for most passive devices and can almost always be ignored.
If there are multiple inductors in your design do not place the windings so that they are in line or parallel. 90 degrees is what you want, this means if one is vertical, you can have only three inductors maximum, unless you leave some space. Maybe three or better four times the largest dimension for inductors in alignment, more if you can spare the space.
Two inductors near each other are called a transformer.
I have read some information where it is suggested to wire air core inductors with the input to the inner wire and output from the outer wire.
Just passing along the info.
Just passing along the info.
Do you recal if a reason was given? I am most curious.rabbitz said:
Capacitors have an outer foil attached to one lead and some have been said to have a somewhat different sound when connected one way or the other. So its not unusual to see a schematic where they are marked for direction. I don't recall ever seeing an inductor (other than the very speciallized with a built in permanent magent) marked for orientation or polarity.
If there is an advantage of one way over the other I'd like to know as I am currently building quite a complex crossover that has 7 inductors in it.
There was no reason given but had a comment on inductor polarity... "Please observe for optimum audio performance" and then showed the correct method.
This was from a well respected professional loudspeaker designer who offers a design service, kits and completed products so is very experienced.
I've been wiring mine that way since and even though I have never tested it, surely can't do any harm.
This was from a well respected professional loudspeaker designer who offers a design service, kits and completed products so is very experienced.
I've been wiring mine that way since and even though I have never tested it, surely can't do any harm.
rabbitz,
I tried wiring it the way you suggested and my project blew up. Can you refund my money? jk
Dominick
I tried wiring it the way you suggested and my project blew up. Can you refund my money? jk
Dominick
Dominick22 said:
Huh? What the.... you plugged your speakers into mains voltage... you're kidding?
It's a joke. No one (I hope) did this.
Once when I was about 9, I plugged an automobile horn into a wall socket, it was very loud but not for long.
Once when I was about 9, I plugged an automobile horn into a wall socket, it was very loud but not for long.
Well now I'm disappointed. All these years I had hoped I was using a non-polarized choke in a circuit that likes that sort of thing.
yes rabbitz,
I was kidding! Great pic post though. Sometimes, noobs like me enlighten the vets with me simple questions. I bet most people think that their is absolutly no difference simply because they never asked.
Thanks a ton for helping my project be a success.
By the way, I posted the finished center speaker at
Center Channel *PICS* under the loudspeaker forum.
Dominick
I was kidding! Great pic post though. Sometimes, noobs like me enlighten the vets with me simple questions. I bet most people think that their is absolutly no difference simply because they never asked.
Thanks a ton for helping my project be a success.
By the way, I posted the finished center speaker at
Center Channel *PICS* under the loudspeaker forum.
Dominick
I really don't know if it makes any difference but added it to the thread for those interested. Maybe some one knows the theory behind it as I certainly don't.
Dominick22 said:
I don't think that's the reason Dominick. I think the reason is that in an AC circuit where the current has to flow both ways through the choke it seems a little odd that someone can claim there is a right and wrong way.
My two cents.
ok---im about to get dumb--but i want to learn.
I guess it makes sense that speakers are ac, but i always thought that they were dc since the source is rectified in the amp before it reaches the output channels??
Can you explain this for me please?
Thanks,
Dominick
I guess it makes sense that speakers are ac, but i always thought that they were dc since the source is rectified in the amp before it reaches the output channels??
Can you explain this for me please?
Thanks,
Dominick
The connection of the inductor would make a difference if you're trying to align them in a specific orientation to couple them, but in general it won't make squat all difference electrically.
In sound terms it will make a difference if you think it makes a difference 😉
The output of an amp is AC, however much the purveyors of snake based liquids try to claim.
In sound terms it will make a difference if you think it makes a difference 😉
The output of an amp is AC, however much the purveyors of snake based liquids try to claim.
rabbitz said:
I could be wrong but judging from the photo the current on both inductors (parallel and series) enters the coil from the outer wire (B) and exits from the inner wire (A). I am assuming here that the connectors in the pic are inputs from the amplifier (terminal cups).
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