tweeter magnet and crossover
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=98637
Printed Date: July 05, 2025 at 7:40 PM
Topic: tweeter magnet and crossover
Posted By: audiocr381ve
Subject: tweeter magnet and crossover
Date Posted: November 04, 2007 at 11:29 PM
Hi guys! I'd appreciate any help you guys could give me. I have two questions.
1. I am mounting my tweeter to the factory location. There is this metal housing the holds the tweeter. The tweeters magnet is attracted to this metal. Is this bad? If so how do I take care of it?
2. I have crossovers for my new components that have two inputs and two outputs. High Input and Low Input. And then Woofer Output and Tweeter Output.
I am using an external amp(not the head unit). So, I go from the amp to the crossover. My question is when I plug the the signal from the amp to the crossover, what do I plug into? High Output, or Low Output?
I read the manuels and couldn't find any help believe it or not. Thanks guys!
Replies:
Posted By: audiocr381ve
Date Posted: November 04, 2007 at 11:31 PM
woops. I meant, what do I plug into, High INPUT or Low INPUT. Not output.
Posted By: haemphyst
Date Posted: November 05, 2007 at 8:09 AM
1. No, this is not bad, and nothing bad will ever happen...
2. Parallel the inputs, both high and low. Take a jumper and put it between the two positive terminals and the same for the negative terminals. Those are bi-wirable or bi-ampable systems.
------------- It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: audiocr381ve
Date Posted: November 05, 2007 at 12:21 PM
What is a jumper? Could I use speaker cable to hook them together?
Posted By: haemphyst
Date Posted: November 05, 2007 at 12:37 PM
Yes. "Jump" (thus, "jumper".) from one terminal to the next, using any sort of conductor.
------------- It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: audiocr381ve
Date Posted: November 05, 2007 at 1:18 PM
So it doesn't matter which one I plug the speaker signals into first from the amp because they are jumped correct?
Posted By: haemphyst
Date Posted: November 05, 2007 at 3:15 PM
Correct. Just make certain you jump from one positive (and negative) to the other... Still wanna make sure you don't short the outputs from the amplifier.
------------- It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: tubbs04
Date Posted: November 05, 2007 at 4:19 PM
so what happens if you don't jump them and only use the low input, but use both your tweeter output and woofer output??? ------------- ...don't crush the weasel...
Posted By: haemphyst
Date Posted: November 05, 2007 at 4:23 PM
You won't get any output to the tweeter. If they aren't both hooked up, they don't both have output.
------------- It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: audiocr381ve
Date Posted: November 05, 2007 at 5:06 PM
whats the use of the High Input and the Low Input?
Posted By: DYohn
Date Posted: November 05, 2007 at 5:10 PM
audiocr381ve wrote:
whats the use of the High Input and the Low Input?
Biamp. ------------- Support the12volt.com
Posted By: audiocr381ve
Date Posted: November 05, 2007 at 5:40 PM
2 amps?
Posted By: DYohn
Date Posted: November 05, 2007 at 5:42 PM
audiocr381ve wrote:
2 amps?
2 amps. ------------- Support the12volt.com
Posted By: audiocr381ve
Date Posted: November 05, 2007 at 5:52 PM
Thanks again guys.
Posted By: tubbs04
Date Posted: November 06, 2007 at 12:13 PM
I only have the low input side of the cross over hooked up, and the low out put and the high output work just fine.... ------------- ...don't crush the weasel...
Posted By: haemphyst
Date Posted: November 06, 2007 at 12:49 PM
Then you have a jumper INSIDE the crossover box, already doing what we suggested with the external wires. You can STILL use the external wires (I'd actually recommend it, over the little bitty computer style jumper blocks inside) to jump from the low input to the high input blocks.
------------- It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: tubbs04
Date Posted: November 06, 2007 at 6:21 PM
will it effect the way the internal "jumper" works???
------------- ...don't crush the weasel...
Posted By: jmelton86
Date Posted: November 06, 2007 at 7:02 PM
Pertaining to something similar, but not relevant (if possible); If having xover coils next to voice coils isn't good, do speaker manufacturers take this into account when designing the xover? They might as well make it inline, right?
------------- 2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001
Posted By: stevdart
Date Posted: November 06, 2007 at 7:17 PM
tubbs04: As long as the connections are electrically the same, you will just have parallel connections. No harm in that...look at it as similar to doing a Big 3 upgrade with 0 gauge wire and leaving the factory wiring in place (talked about in DYohn's subject stickied above). jmelton86: As haemphyst explained to me recently, a static inductor (voice coil) won't affect a dynamic inductor (crossover coil), or vice versa. They can be placed closely and oriented on the same plane. I don't think manufacturers, to a very large extent, take a whole lot of anything in consideration when designing crossovers for commercial systems....well, except for cost, that is. ------------- Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: jmelton86
Date Posted: November 06, 2007 at 7:26 PM
stevdart wrote: jmelton86: As haemphyst explained to me recently, a static inductor (voice coil) won't affect a dynamic inductor (crossover coil), or vice versa. They can be placed closely and oriented on the same plane. I don't think manufacturers, to a very large extent, take a whole lot of anything in consideration when designing crossovers for commercial systems....well, except for cost, that is. Really?! Not at all, huh? This makes my ideas for my upcoming upgrade much more simple to design now! -Sweet!! I'm sure lower quality companies don't, especially for coaxials -maybe a bit more for components? ------------- 2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001
Posted By: stevdart
Date Posted: November 06, 2007 at 7:52 PM
I don't know about that. I see inductors on the same plane 1 or 2 inches away from each other all the time. If one of the inductors was standing on end (90 degrees), that would be fine. But that would also cause the overall size of the crossover to be larger (more height), which would result in more cost in manufacturing and delivery. That is why I suppose the coils are left lying flat next to each other.
------------- Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: jmelton86
Date Posted: November 06, 2007 at 8:04 PM
Okay, so then it is good to have coils 90* of one another? Is that about it? I'm upgrading my door speakers. I'm putting in 5.5" woofers via an inductor and i'm placing the tweeter next to it via the included 12dB xovers inline for them. I can just mount the l/p coil and the h/p coil/cap basically anywhere behind the speaker -as long as all coils are 90* of each other, or does it not really matter? ------------- 2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001
Posted By: stevdart
Date Posted: November 06, 2007 at 9:11 PM
Give 4 or 5 inches as a safe distance if coils are mounted in the same plane. If at 90 degrees, they can be closer. You have plenty of room in a car install for crossovers. The crossovers for both my front door speakers are in the glove compartment. You have plenty of room so just secure the crossover components several inches away from each other anywhere you want. ------------- Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: haemphyst
Date Posted: November 07, 2007 at 7:01 AM
stevdart wrote:
jmelton86: As haemphyst explained to me recently, a static inductor (voice coil) won't affect a dynamic inductor (crossover coil), or vice versa. They can be placed closely and oriented on the same plane.
I think I said that a static magnetic field (the magnet in the speaker, not the coil of wire that is the voice coil) won't affect a dynamic magnetic field (the inductor in the crossover). That is why it is OK to place your crossover immediately behind, or in close relationship to, the motor structure of most midrange or tweeter components. Even most woofers won't be able to generate the necessary field from the voice coil to affect a nearby inductor.
However, the voice coil, if rediculously powered enough, (WAY up in the hundreds of watts range) COULD conceiveably generate enough field the escape the bounds of the motor structure, and affect the field of a nearby crossover inductor. That'd be about all you have to worry about. The 4 or 5 inches referenced by stevdart above will be sufficient in 99+% of your applications. ------------- It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
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