Length of speaker cables


I just went from 2 channel amp to mono blocks. Is it important that I stop using 4 meter audio quest rocket 88 and downsize to 6 ft? Will there be an audible improvement?
steven0713
Another Canare 4S11 fan here, if you can run them bare or terminate them yourself they are only $1.28 per foot from Redco definitely worth a try. I'm not sure if they offer termination service but check their website.
steven0713,
First of all, the quote from Richard Vandersteen is absolutely correct. This is my experience. I went from 15' to 8' of the same Rocket 88 speaker cable and found a slight, but noticeable difference in details against a black background.  Psychoacoustics?  Possibly... But the real change came from replacing Rocket 88 and moving up to William Tell ZERO in 8' length.  That opened everything up, considerably.  eagleeye7 describes it exactly correct, just above.
It's an expensive upgrade, but if you are placing plenty of your money into mono block amplifiers than don't stop there. Feed them the signal that will yield the best results.  This also includes high quality power cables, if you don't already have them.  Note; William Tell ZERO is a full-range speaker cable.  If you are running bi-wire than you would need to buy the bi-wire combo setup.  It's very expensive.  I went with the full-range William Tell ZERO after coming from my bi-wire Rocket 88.  Man, it is awesome!
Best to you. 
@mammothguy54,
+1
Though the OP doesn't have to go as far up the AQ chain to achieve higher resolution, I would personally opt for the William Tell's, as it would be the end of a chase.
Don't believe me? 
PM ctsooner, or audioconnection (John Rutan)- the latter can give you the best info on cables-PERIOD
Bob
I am using Kimber Summit Series  Bifocal XL 2.0 Meters each terminated with WBT610 CU Banana Connectors. Part #  BFXL2.0MP0610Cu
Between my monoblocks and my speakers which accept this connector and they split the Hi Frequency & Lo Frequency.  Extremely nice.
Check them out:  https://www.kimber.com/customize/BIFOCAL-XL
Nearly any length you wish....I wouldn't make mine any longer.
Best, Steve
Thanks for all the help. Now waiting anxiously for delivery of William Tell Zeroes