@mikey8811 - It is my understanding that the SL line was meant to be budget/entry level, not providing near the sound quality of the Matrix HD or even the older Magnum MA.
@hiendmmoe - I do have Matrix HD 38 interconnects, but didn't notice quite the jump in sound improvement as the initial installation of the Matrix HD speaker cables provided in my system. Definitely a synergy there, but I would describe it as just 'incrementally more great sound' as opposed to going from a 'good' to 'great' jump in sound quality that the speaker cables provided.
@hiendmmoe - I do have Matrix HD 38 interconnects, but didn't notice quite the jump in sound improvement as the initial installation of the Matrix HD speaker cables provided in my system. Definitely a synergy there, but I would describe it as just 'incrementally more great sound' as opposed to going from a 'good' to 'great' jump in sound quality that the speaker cables provided.