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EAW KF750px wiring

Printed From: Speakerplans.com
Category: General
Forum Name: Advanced Discussion
Forum Description: Advanced discussion area for higher lifeforms
URL: https://forum.speakerplans.com/forum_posts.asp?TID=106236
Printed Date: 22 March 2023 at 4:12pm
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Topic: EAW KF750px wiring
Posted By: Requiem
Subject: EAW KF750px wiring
Date Posted: 20 April 2021 at 7:27pm
Hi guys, quick one,

Don't have any equipment or any way of testing the phases to hand, and the internal xover is real hard to access (to see if it's indicated on the xover) , but I'm putting back together these tops and the colours are confusing me, so the LF wiring colours are blue and black, which is the positive and which is the negative does anyone know? Obv the terminals on the driver are red and black, so I would assume black to black but then blue to red is pranging me out, I'm thinking black may be positive?

Then we come onto the mid/hi which is on the internal xover and the colours are black and yellow.. I would usually assume yellow would be positive in that scenario but then I'm doubting myself massively now LOL

And don't say check the rear of the connector because I'm switching out socoplex for nl4's and I've already ditched the socoplex


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www.requiem-soundsystem.com


Custom Martin Audio WSX, USB & CSG Soundsystem based in Bristol



Replies:
Posted By: I-shen Soundboy
Date Posted: 21 April 2021 at 5:31pm
9v battery applied briefly to the speaker circuit should provide confirmation of polarity:
 + on battery to + on speaker,
 - on battery to - on speaker
speaker cone should move outwards.

Best disconnect x-over from a speaker before doing this on individual.cone, but as your problem is the crossover connections, it might be possible to use a known DC polarity and observe the woofer cone movement....   although I have no idea what this could do to the HF components (probably nothing good) so perhaps disconnect the HF first....
At least this will give you the original designer's designation for the black polarity, which should be consistent across the whole board.


Posted By: Requiem
Date Posted: 21 April 2021 at 11:53pm
Thanks! Would of done this but didnt have a 9v battery to hand, was hoping someone would just know..

Good to know the black cable will be consistent throughout the cab though, it was really confusing me, ive always gone along the lines of a 'warm' colour was the positive and a 'cool' colour / black was the negative, but that doesnt really make sense in this scenario

-------------
www.requiem-soundsystem.com


Custom Martin Audio WSX, USB & CSG Soundsystem based in Bristol



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