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  3. 124327-158

Has anyone tried these stunning new CPT power cord?

   Considering the many, many brands of power cords I've tried in my very well accomplished high-end system, I have never been so impacted by these Core Power Technology power cords. Within a very short period(15-20) minutes my system literally came alive. Soundstage opened wider and deeper. The background became dead silent, space between instruments and stage members were more focused and everything sounded cleaner and musical than ever. My highs had a glorious crispness and symbols shimmered. Midrange through my 2" horn became more dynamic and punchy. My 15" bass driver tightened and dug low with great control. My Rel G1 which is a fabulous sub on its own but with a CPT 150 on it is another story. Running high pass from my sub to my Audiozen Noah amplifier, music depth is just stunning. Lower end bass is authoritative and clean with solid grip and impact. 
   My experience with these power cords is truly magical. The scary part of the above is I only have one 150 on my sub and one 300 from my wall to my 6 outlet bar. I still need 3 more to complete my system. I could just imagine the level after that...In closing, I cannot emphasize enough to try one of these in your system. I CANNOT and WIIL NOT take these out as they are that good. But hold your jaw, cuz what you've been listening to will just become real after Core Power Technologies. 

Cheers....and let the tapping begin.......



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grannyring's avatar
grannyring
6,506 posts
 
Unfortunately it does seem as though transformers will buzz. That has been my experience. You may find that 80 or 90% of them don’t buzz, but some of us will always get the buzzers.

i’m going to build a DC blocking circuit and place it inside my 300 to see if that quiets it down.

My system is dead quiet before the 300. I can now hear a very slight buzz when I’m about 10 feet away and not listening to any music. It did it before my modification and my modification helped just a tiny bit.

Wonder if someone can just purchase a transformer from the builder and replace it?
t_ramey
632 posts
 
@grannyring 

Do you have a link for the damping material your using? I have a bunch of the dynamat type stuff leftover from my truck I'm wondering would add anything to the inside of my 1800.
geoffkait's avatar
geoffkait
23,365 posts
 
This seems like the appropriate time to mention that cork works fairly well under transformers, not to mention loosening the screws or even GULP removing the screws OMG! that strongly couple the transformer to the chassis. Of course low frequency high permeability mu metal should be wrapped around the transformer as the induced magnetic fields are not really that good for the sound. If I say this often enough maybe it will permeate. 😛

grannyring's avatar
grannyring
6,506 posts
 
I used cork also per your post! I used 1/4 inch directly under the tranny and over the CLD material. @geoffkait the tranny still buzzes and what are your thoughts about a DC  blocker circuit? 

Instead of tightening the nylon screw tight, I will remove it and see if that helps....
grannyring's avatar
grannyring
6,506 posts
 
The tranny is the only thing in the chassis. No other circuitry to protect from magnetic fields in these units, unless you think it is degrading the sound to the hard wired power cable on the unit.
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