Bi Wiring Speakers from Luxman L-509X

Hello,
Just buy better jumpers. Nordost jumpers are $175. Then run a better single cable if you need it to go to the woofer or bass terminal. Just so you can hear some differences in sound try leaving the jumpers on. Then connect your speaker cables to the high side or tweeter terminals. After that to get a more neutral sound do one black on the bottom and the one red on the top to each speaker. I say get some nice jumpers to start with. Nordost has a reference series set of jumpers too incase you have really expensive gear. This store in the Chicagoland area lets you try before you buy:
https://holmaudio.com/
Try it out first. Also, Let the cables load up for a day or so for a true test. 

PS @oldhvymec

The humps on the left are not a function of the crossover at all.  They are the natural occurrence of the woofer in a ported cabinet. So long as the box, port and woofer are there you'll see that, no coils or caps needed.

So one hump is the driver one is the port and on the right that's the XO right? 

Not 2 ports on the left, Driver and port?

Thanks E

Regards

Hey @oldhvymec

A single driver in free space produces a 1 hump curve, where the peak is called the driver's resonant frequency. You’ll see this in any woofer spec sheet:

https://www.madisoundspeakerstore.com/approx-8-woofers/seas-excel-w22nx001-graph-e0077-8-graphene-co...

Put that woofer (all alone) in a sealed cabinet cabinet and the impedance curve will have 1 hump with a new resonance point.

Add a tweeter with the appropriate crossover and you will have 2 impedance humps. The Magico S1 Mk II for instance:

https://www.soundstagehifi.com/index.php/equipment-reviews/973-magico-s1-mk-ii-loudspeakers

Click on the link near the start of the article and scroll down.  That peak just below 50 Hz is the woofer/cabinet system alone.  The peak above 1kHz is the combination of the low and high pass filter sections.

Now, port that woofer in a cabinet and you’ll get 3 peaks total. The single woofer peak will turn into two. 

Best,

E

@oldhvymec

You might find this discussion useful. In it we go over the impedance of a woofer in a sealed cabinet:


https://speakermakersjourney.blogspot.com/2016/12/crossover-basics-zobel_8.html