Free Tip for Jumpers

My experience with three different models of Wharfedale monitors is that:

1) replacing the metal bars from the factory with jumpers improves the overall sound of the speakers 

2) the metal in the jumper cables matters with silver tipping the sound up towards treble emphasis compared with copper

3) connecting both red and black speaker cable leads on the HF terminals has a similar overall effect as connecting silver jumpers, emphasizing treble frequencies, while connecting both speaker cable ends to the LF terminals will emphasize bass and midrange and slightly roll off treble

4) cross wiring the + and - leads to the HF and LF terminals affects soundstaging, adding more detail to and widening the stereo image, with the positive lead attached to the HF terminal of the speaker slightly emphasizing treble, (opposite of what is described above?) but not to the same degree as attaching both cable ends to the HF posts.

I found these results on all three types of Wharfedale speakers of different vintages and costs.  Newer Wharfedales come with instructions on these various wiring configurations when using single wire cables.  

I have tried all kinds of homemade jumpers and some cheaper commercially available versions.  I am currently using some jumpers from AliExpress that are supposedly silver plated OCC copper with rhodium plated copper spades that cost between $11 and $45.  These seem super well made and sound fantastic to my ears.  The Worlds Best Cable jumpers mentioned in this thread from Amazon are supposed to be Canare wire, look well-made and are probably leaps ahead of the metal plates that come stock with many speakers.

YMMV

kn

I have biwire (4 x 13 AWG) OCC copper speaker cables and a pair of Spendor SP2/3R2 biwirable speakers. I have tried all the possible permutations (except for high quality, pricey jumpers) and my preferred method of connecting the speakers is as follows:

- at the red speaker terminals: tie together two 13 AWG cables and connect them to the midbass terminal, then use a stock gold plated metal jumper plate to connect the midbass and tweeter terminale

- at the black speaker terminals: ditch the stock plate and do a normal biwire (one 13 AWG cable to midbass and one to tweeter

I haven’t tried the above solution but with the colors reversed, maybe biwiring the red terminals instead would have resulted in a somewhat different sound?!

Looks to me as if @knownothing  knows something. Thank you for sharing @donquichotte, thank you. Great to hear folks systematically experimenting and sharing their results!

I’ve been doing this for years myself and recently did some trials on jumper cables that were quite eye opening! I'd show a pic but I still can't seem to post pics on here.