ejchen
New member
I recently completed the system with the following major components that were all purchased brand new within the past few weeks ago:
Onkyo PR-SC5509
Wyred4Sound MMC-7
Sony KDL-60EX645
Sony BDP-S590
Martin Logan EM-ESLs + EM-C2 + Dynamo-700w + Motion-4s
(considered the EM-FX2s but size is too big as the surround speakers)
2 questions:
I'm not sure whether this is a generic question or would this be specific for the Onkyo PR-SC5509 configuration
Q1. What would be the recommended crossover frequency settings for the above ML speakers? Do I need different setting for music and movie?
(currently, I'm using 45 for the front speaker and 55 for the center speaker)
All ML speakers have faint hum, the 60 Hz sound?, after powering on the pre-amp and amp even when no other device around, such as tv/DVR/cable box, and no input is connected to the Onkyo PR-SC5509. only the pre-amp+amp+speakers. The hum is persistent at a constant low, but noticeable, level when the family room is quiet.
At first, I thought this might be the "ground loop" issue and I've tried the hospital grade Isolation Transformer and Panamax M4300-PM but none of them can help.
Q2. Is this humming normal? Do all audio consumer electronics emit certain degree/level of 60 Hz hum from the on-board electrical components?
any comments/suggestions are highly appreciated.
Onkyo PR-SC5509
Wyred4Sound MMC-7
Sony KDL-60EX645
Sony BDP-S590
Martin Logan EM-ESLs + EM-C2 + Dynamo-700w + Motion-4s
(considered the EM-FX2s but size is too big as the surround speakers)
2 questions:
I'm not sure whether this is a generic question or would this be specific for the Onkyo PR-SC5509 configuration
Q1. What would be the recommended crossover frequency settings for the above ML speakers? Do I need different setting for music and movie?
(currently, I'm using 45 for the front speaker and 55 for the center speaker)
All ML speakers have faint hum, the 60 Hz sound?, after powering on the pre-amp and amp even when no other device around, such as tv/DVR/cable box, and no input is connected to the Onkyo PR-SC5509. only the pre-amp+amp+speakers. The hum is persistent at a constant low, but noticeable, level when the family room is quiet.
At first, I thought this might be the "ground loop" issue and I've tried the hospital grade Isolation Transformer and Panamax M4300-PM but none of them can help.
Q2. Is this humming normal? Do all audio consumer electronics emit certain degree/level of 60 Hz hum from the on-board electrical components?
any comments/suggestions are highly appreciated.