My passive X-over is done!

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My passive X-over is done!

Postby Stormen on Thu Sep 20, 2007 3:08 am

Just got done with my passive x-over last night, and thought you wanted to see it :D

The filter is made with Duelund Coherent Audio components... The Lexan plate that the filter is mounted on is 90 cm long ;)

If you don't know what Duelund is you can read some tests here:

http://www.humblehomemadehifi.com/Cap.html

http://www.tnt-audio.com/accessories/duelund_xover_e.html

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Pure Passive is the purest form of music!

'68 VW Fastback - McIntosh - Duelund - B2 Audio
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Postby mulletboy2 on Thu Sep 20, 2007 3:47 am

Stunning mate, simply stunning :D
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Postby Scott Buwalda on Thu Sep 20, 2007 6:03 am

It is absolutely beautiful! For those of you that don't know what you're looking at, the passive crossover you see here cost more than an entire Alpine Status F#1 system. Carsten competes in the EMMA pure passive class in Denmark, for none other than Team Hybrids.

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Postby Stormen on Thu Sep 20, 2007 6:23 pm

Thanks Scott and Mark...

Just got the filter in the car and hooked up...

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And how does it sound... It's so goooood.... It's so natural...

It's when you get to this level of X-overs you know why they sound so much better then running active!!!

Need to go to bed now... Need to sleep... So tired!!! Getting to old for only 5 hours sleep a night for 2 weeks straight....
Pure Passive is the purest form of music!

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Postby dlechner on Thu Sep 20, 2007 6:43 pm

HOooooooooooooolllllllllllllllllyyyyyyyyyyyyyyyyyyyy CRAP!

That is one of the most beautiful car audio peices I have ever seen!

I so wish I could hear it!
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Postby Dave Brooks on Thu Sep 20, 2007 8:47 pm

Man I'm speechless. You surpass me beyond all measure 8) 8) 8)
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Postby mulletboy2 on Fri Sep 21, 2007 1:39 am

Very nice mate.. and that's probably understatement of the year :D
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Postby jsketoe on Tue Sep 25, 2007 10:31 pm

yup...I almost got wood.
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Postby Chris O. on Sat Sep 29, 2007 6:05 pm

Damn that is beautiful!!!!
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Postby dwvw on Sun Sep 30, 2007 12:02 am

Amazing! Do you have pics of the rest of the car? The trunk looks very classy.
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Postby McC on Mon Oct 01, 2007 2:23 am

Absolutely beautiful! Shame I won't get to have a listen!
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Postby AllstarGN on Fri Oct 05, 2007 12:28 pm

WOW...VERY Well done, I just went and kicked a dent in my car for not being more like yours! "Why can't you just sit still and sound nice like everyone elses car? Nooo you gotta idle bad, shake , shimmy and be a general nuisance" I swear my car is female!
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Postby winslow on Tue Oct 09, 2007 10:12 am

I was under the impression that you need to mount your inductors at right angles to each other.
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Postby jc2 on Tue Oct 09, 2007 1:38 pm

It's the inductors you need to worry about. The magnetic flux from an inductor can induce a current in an inductor mounted close by if second inductor is mounted parallel with the first . By mounting on einducto perpendicular, the flux from one cannot indcue a current in the other, the flux lines just don't go in the right direction.

In most audio frequency crossovers I haven't seen an issue. I see way more problems with the inductors picking up power line noise.
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Postby Stormen on Tue Oct 09, 2007 2:50 pm

winslow wrote:I was under the impression that you need to mount your inductors at right angles to each other.


Your right... But these inductors are cast in some kind of material (can't remeber the name) so they don't effect each other like normal aircoils.
The round things is inductors the ones that look like chocolate bars in each corner are caps and the ones tha looks like a pencil is resistors...
Pure Passive is the purest form of music!

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