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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: RE: Add some carbon fiber to the face plate. posted by HumanMedia on May 30, 2007 at 18:34:10:
The choke on the output for RFI filtering. The transformer doesn't really offer that much noise suppression. Normal balanced transformer are only able to provide between -9db and -12db pending frequency. It would be different if you were using a bifilar transformer like the Plitron NBT models...those can surpress up to -65db...but normal trannies offer very little improvement....the biggest change is the split phase reaction in the component power cord. BTW, I use a 25A NBT in balanced mode...and I have 5 - 193L's on the secondary and 1 - 193M. I also use Shakti Stones to couple with the transformer, Shakti On Lines for the wiring, and large Bybee's on the primary and secondary...and all offer an improvement in noise rejection and line frequency resonate. There is much more to PFC than just typical line filtering. Right now you are off to a good start.
It's a shame you used glue to secure the outlets...it would not have been my first choice...glues all ring at different frequencies. Instead I would have recommended a .015" thickness of EAR C-1002 to be secured to the metal cover to isolate the ringing frequency between the cover and outlet straps. Then I would have used brass hardware to secure the outlet.
Next, lets take a look at the wiring. I don't care what kind of wire you use...that's not important...but what is important is the outlets resonate character. You should place 5 wires per outlet...this is called star wiring...2 hot, 2 neutral, and 1 ground. On the rear of the outlet you will see 4 wire terminals per side (hot and neutral). Place one wire into the bottom terminal and 1 wire into the top terminal per side...this is for input wiring only....now take 1 wire and place it into the 2nd and 3rd terminal per side...this is the outgoing wiring. Why you may ask??? Because the copper wire alters the resonate frequency of the wire clamp inside the outlet. This neat little trick will reduce 50% of your harmonic ringing at the outlet. I like to use dual runs of Cardas 11.5ga for this application and the Cardas 9.5ga for the earth ground.
I hope the tips help bring you closer to audio nirvana.
Alan
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Follow Ups
- RE: Add some carbon fiber to the face plate. - audionutge@yahoo.com 04:37:17 05/31/07 (2)
- Schematic - Soundripples 08:14:01 05/31/07 (1)
- RE: Schematic - audionutge@yahoo.com 13:23:10 05/31/07 (0)
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