What speaker cable for Martin Logan motion series (AMT) tweeter.

@bobrock it seems like you’ve already got a good handle on trying different cables and helpful examples so far getting started. I got baited by a good friend 30+ years ago who had a massive supply, and later again with a few dealer friends who let me try different cables. All invaluable experiences yielding results I never expected.

Since you mentioned Mogami and what you hear, and above you mentioned AP Oval 9s, and Cardas being "too smooth"... What I can share is the AP cables and Cardas can sound noticeably different up & down the lineups with different designs of cables they offer. If you feel the Mogami are a bit lean on bass and midrange [in your system], some might say "neutral". By chance do you have access to a local dealer who will let you try different cables? Or, have you ever checked out the "lending library" service at TheCableCo?

Cardas are designed to be very warm at the bottom tiers (concealing flaws) and more open and neutral as you move up their lineup. So, top level will be much more transparent. I use Transparent exclusively… they are just that… you get exactly what your components are passing on without tonal adjustment. I have all Audio Research Reference stuff so that is perfect for me. No tonal adjustment between tiers just improved performance. Good choice if your system is up for it. AMTs are great but revealing. I would try Cardas Clear xxx and a Transparent that fits your budget. Then choose.

Given you haven’t found the right cable yet I’ll reiterate my earlier recommendation for the used AZ Satori shotgun cables for $850 that still seem to be available.  If they don’t work out you can very likely sell them for no loss so very little risk, and I think there’s a good chance they’ll do everything you’re looking for.

Thanks for all the feed back everyone.