The best solution for bi-wiring posts is generally to attach one speaker lead to one set of posts and the other lead to the other set. For example, connect the + speaker lead to the + woofer post and connect the - speaker lead to the -tweeter post. This way each driver, woofer and tweeter, sees one biwire strap and the speaker cables. If you connect both speaker leads to the same set of posts, then one driver sees two biwire straps and the other driver sees none. The split post arrangement usually results in a more coherent blend of the woofer and tweeter.
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Chord recommends a diagonal connection which worked out great:-
As a general rule, the treble connections are usually reckoned to produce better sound quality than the bass connections. However, in many cases, we find that a diagonal connection produces the most musically coherent sound. To do this, connect the positive (+) speaker cable to the positive treble connection and the negative speaker cable (-) to the negative bass connection. So in effect, the cable is connected diagonally. This is quick, easy and fun to do and the results are easy to hear.
Really - whatever sounds better to you. You have to play around.
That said, despite the fact that Alan Shaw (designer) believes aftermarket jumpers are nonsense, I found a definite improvement by changing the stock jumpers to Audience AU24. I was experiencing some bass muddiness in my room and the jumpers really cleaned up the sound.
But that is a preference and may be the last thing one would want in a room where the speakers were sounding a bit bass-shy.
Ran into Bill Low recently and he said when single wiring with jumpers it CAN matter which post you use…who knew? Bill knew (!)…My previous speakers were single wired due to the designer's recommendation (Alan Yun, Silverline Prelude speakers), and my current Sonist Recitals are biwired per design recommendation…with speaker cables recommended by Bill during that conversation (apparently single biwire cables should have disparate runs to deal with isolation benefits…he was right again!). Coherency all around. Note that I made a pair of what I thought were groovy "better than stock" jumpers for the Preludes, and they sucked. The supplied brass strips sounded better.
Yes, there are no hard and fast rules on how you want to connect the cables to the bi-wirable binding posts. The best configuration is the one that sounds best to your ears and preference.
Yashu, may I ask what speaker cables are you using with the SHL5 Plus? Are you using the stock metal links that come together with the speakers or they have been replaced with aftermarket jumpers?