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Robbie010

How to Bi-wire Type A Crossover

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Without realising it I have bought bi-wire speaker binding posts for my clone la scala project.

 

Rather than tossing them on a pile of spares and buying another set of normal binding posts can someone tell me whether I can (and how to) connect the bi-wire binding posts to the Type A crossover in a bi-wire configuration?

 

Thanks. 

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Can you make sense of a schematic, or a wiring diagram?

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3 hours ago, Robbie010 said:

Without realising it I have bought bi-wire speaker binding posts for my clone la scala project.

 

Rather than tossing them on a pile of spares and buying another set of normal binding posts can someone tell me whether I can (and how to) connect the bi-wire binding posts to the Type A crossover in a bi-wire configuration?

 

Thanks. 

 

This won't be too difficult...

 

Relabel the input terminals as input low.   Use the two empty terminal barrier strips as input high + and -.  Move the wire going to the 13uf cap from the current input + to the new input high +.

 

Cut the common wire between the output woofer - and the output mid -.  If you cut it close to the woofer out - screw you may have enough to shift the remaining wire to the left.  In the end, one common wire from input low - to woofer out -, one common wire from input high - to output tweeter - and output mid -.

 

Now, connect your top binding posts to input high, and the bottom binding posts to input low.

 

For single wire from your amp, you will need to strap your + binding posts together and your - binding posts together.  For biamp/biwire, remove the straps.

 

Actually, you made your speaker a little more versatile!

 

I hope I visualized that right.

 

Mike

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51 minutes ago, mboxler said:

 

This won't be too difficult...

 

Relabel the input terminals as input low.   Use the two empty terminal barrier strips as input high + and -.  Move the wire going to the 13uf cap from the current input + to the new input high +.

 

Cut the common wire between the output woofer - and the output mid -.  If you cut it close to the woofer out - screw you may have enough to shift the remaining wire to the left.  In the end, one common wire from input low - to woofer out -, one common wire from input high - to output tweeter - and output mid -.

 

Now, connect your top binding posts to input high, and the bottom binding posts to input low.

 

For single wire from your amp, you will need to strap your + binding posts together and your - binding posts together.  For biamp/biwire, remove the straps.

 

Actually, you made your speaker a little more versatile!

 

I hope I visualized that right.

 

Mike


Thanks Mike,

 

I’m going to have to break this down and work through it bit by bit. I’m a visual learner so will need the crossover in front of me to make sense of this. 
 

👍🏻

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Thanks Mike,
 
I’m going to have to break this down and work through it bit by bit. I’m a visual learner so will need the crossover in front of me to make sense of this. 
 


I’m the same way
Any pics to show this would be great
I learn things by being a hands on with these type of jobs. And photos help me as well
Great question and a great answer
Hopefully some pics or a drawn out diagram of how to do this would be great


Sent from my iPhone using Tapatalk

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Wait.. what? Why not just just use one set of the binding posts and ignore the other?

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3 hours ago, Thaddeus Smith said:

Wait.. what? Why not just just use one set of the binding posts and ignore the other?


I realise that this the “easy” way of doing it but if I’ve got bi-wire binding posts why not utilise them and do it properly!?

 

4 hours ago, carlthess40 said:


I’m the same way
Any pics to show this would be great
I learn things by being a hands on with these type of jobs. And photos help me as well
Great question and a great answer
Hopefully some pics or a drawn out diagram of how to do this would be great


Sent from my iPhone using Tapatalk


I will take pictures and do a diagram while I’m following Mikes instructions and post them when I’m done. 👍🏻
 

 

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15 hours ago, carlthess40 said:


I’m the same way
Any pics to show this would be great
I learn things by being a hands on with these type of jobs. And photos help me as well
Great question and a great answer
Hopefully some pics or a drawn out diagram of how to do this would be great


Sent from my iPhone using Tapatalk


here is a before and after image..... I think this is right!

 

Before:

5CAC98B5-2DC9-4D43-B921-73C67409B332.jpeg.99227fbe2a481866e31de3e77ca83adc.jpeg
 

After:

 

B642B312-F29B-47CD-9514-94E430C8EF6C.thumb.jpeg.2d729c6421ab1e9513176095f60985a5.jpeg

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Upon a short going over of your wiring it looks correct to me but I'm no expert. And you had the extra terminals on your terminal block already, just begging for something to do:)

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I like the colors!  I believe you should move the common wire that connects to tap 0 from input L - to input H -.  The autoformer is part of the high pass filter. 

 

Mike

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Agreed with the post immediately above.  Beyond that it looks right.

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14 hours ago, mboxler said:

I like the colors!  I believe you should move the common wire that connects to tap 0 from input L - to input H -.  The autoformer is part of the high pass filter. 

 

Mike


like this:

 

5FB14EC0-C432-409F-93C6-B2A9CF79FF91.jpeg.bccbee956f9d980474276b77b01d3dd9.jpeg

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Looks good to me!  You have now created two separate filter circuits.  They will become one parallel circuit when the binding posts are strapped.

They can also be paralleled when "strapped" at the amp...bi-wiring.

They can also be run as separate circuits, each connected to its own amp...bi-amping.

 

Mike 

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