With regard to subwoofer cables - interconnect and power cord - I have some pretty enlightening experince.
Several years ago, I tried comparing a Synergistic Research AC Master Coupler (a shielded twin coax design) and a DIY power cord based on Kimber 8TC (a braided speaker cable) on my Mirage Substrata 1500 (a design very similar to the original Sunfire subwoofer). As my system integrates 2-ch and hometheater applications, I can listen to stereo playback without using the sub. To my amazement, the differences between the power cords can be heard without using the sub! With the SR cord, the sound is significantly cleaner and more detailed. My theory is it's due to the shielded nature of SR cord, which reduced the electromagnetic interference (EMI) produced by the sub's switching power supply from radiating through the power cord.
Fast forward to several months ago as I was preparing to replace the Mirage sub with a Velodyne DD-12. Since I plan to move the new sub closer to the rear wall, I decided to replace the sub-end connector (Eichmann Silver Bullet) of my subwoofer cable (XLO Pro 100) with a 90-degree Cardas GRNO. The "downgrade" was so awful that I changed it back the next day. The Cardas GRNO change alone made the sound - full range sound - slow and fuzzy.
The last episode took place this week as I replaced the SR AC Master Coupler (now called the AC Master Coupler Classic) with a SR Active AC Master Coupler (the X version, not the latest X2 variant) with Active Shielding technology. This time the most staggering improvement was in my humble analog cable TV picture! Video noise was reduced and details were improved. I suspsect the improvement is due to better shielding (Active Shielding) in the new power cord.
Alan Hsu
Several years ago, I tried comparing a Synergistic Research AC Master Coupler (a shielded twin coax design) and a DIY power cord based on Kimber 8TC (a braided speaker cable) on my Mirage Substrata 1500 (a design very similar to the original Sunfire subwoofer). As my system integrates 2-ch and hometheater applications, I can listen to stereo playback without using the sub. To my amazement, the differences between the power cords can be heard without using the sub! With the SR cord, the sound is significantly cleaner and more detailed. My theory is it's due to the shielded nature of SR cord, which reduced the electromagnetic interference (EMI) produced by the sub's switching power supply from radiating through the power cord.
Fast forward to several months ago as I was preparing to replace the Mirage sub with a Velodyne DD-12. Since I plan to move the new sub closer to the rear wall, I decided to replace the sub-end connector (Eichmann Silver Bullet) of my subwoofer cable (XLO Pro 100) with a 90-degree Cardas GRNO. The "downgrade" was so awful that I changed it back the next day. The Cardas GRNO change alone made the sound - full range sound - slow and fuzzy.
The last episode took place this week as I replaced the SR AC Master Coupler (now called the AC Master Coupler Classic) with a SR Active AC Master Coupler (the X version, not the latest X2 variant) with Active Shielding technology. This time the most staggering improvement was in my humble analog cable TV picture! Video noise was reduced and details were improved. I suspsect the improvement is due to better shielding (Active Shielding) in the new power cord.
Alan Hsu