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Bi Wiring Speakers from Luxman L-509X

I'm looking at updating speaker cables and I'm convinced that biwiring with two separate sets will be the best approach over a single set of speaker cables with matching jumpers.  

My 509 has two sets of speaker outputs and I can select for the amplifier to drive both outputs.  So my plan is to run one set of outputs/speaker cables to the woofers and the other outputs/speaker cables to the tweeters.  

My question is will this create any compromises in the performance in any way?  I don't want to end up with improving one aspect at the detriment to another.  

Am I just overthinking it?
pinball101

Showing 2 responses by imhififan

imhififan's avatar
imhififan
2,218 posts
 
The amplifier sees the same speaker load either way.
@erik_squires +1 

So highs @ 8 ohms
lows @ 8 ohms
- to -, and + to + = 4 ohms
No!!!
The high pass crossover has high impedance at low frequencies and the low pass crossover has high impedance at high frequencies.
So " - to -, and + to +" basically still = 8 ohms.


imhififan's avatar
imhififan
2,218 posts
 
The low and high pass filters means the multiple drivers are not not seen in parallel by the amplifier. They are seen as separate entities.

For a better view to understand this, please see my post here:

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

My original statement, that using the A+B outputs to bi-wire a speaker is equivalent to using just A or B stands. The amplifier won’t know the difference and hopefully you’ll see the explanation in the post.

Using simple, DC analysis for equivalent resistances is not appropriate in this case. It would work (with a lot of slop) with parallel drivers of the same type in the same section, like having 2 woofers for instance.
@Erik_squires  +1

I hope oldhvymec had read the link @Erik_squires provides for better understanding how a parallel crossover works.
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