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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
6,500 posts
 
Well I placed a DC blocker circuit inside both my 150 and 300 to tame the hum/buzz in my 300 and remove the hum/buzz in my amplifier transformers. It worked like a charm. The 300 as well as my amplifier are dead quiet! Awesome.

The DC blocker is very simple folks. Here are some pics.

- one bridge rectifier - 8amp. 600 volt
- one .47 uf film cap - I used a nice Audio Cap Theta
- two 15,000 uf. 35 vdc caps - I used Nichicon
- one 33 ohm resistor. - I used Mills MRA12

The unpopulated board came from here;

http://www.atlhifi.com/shop/bare-pcb/pcb-for-dc-trap-blocker-filter-for-toroidal-transformers-toroid...

While I I did not expect improved sound quality, who knows? We will see.

http://s1097.photobucket.com/user/grannyring1/library/DC%20blocker?sort=3&page=1
lak's avatar
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lak
4,642 posts
 
grannyring, good idea, please keep us posted on progress and sound quality.
grannyring's avatar
grannyring
6,500 posts
 
The circuit needs to break in before I know if it has any impact on the sound quality. Right now I would say I am hearing a slight improvement in air and Micro details.  Could all be in my head 😁

However, all my toroidal transformers are dead quiet now. It costs about $50 to build one of these and place in your balanced transformer, AC distribution outlet box, or amp etc... 
grannyring's avatar
grannyring
6,500 posts
 
Just an update on the modifications I completed on the 300 and 150. Adding the DC blocking circuit did not bring about additional sound quality improvement. It did however quiet down the transformer in the 300 and the transformer in my integrated amp.

Now if you read back to an earlier post where I replaced the power cable with a nice Furutech on the outgoing female end only, this resulted in a Nice improvement to my ears. The biggest difference is more of a full-bodied sound presentation. All of the details are still there, however they are delivered in a more full bodied and meaty manner. In my system this is a big plus. However, this is both system and user preference dependent.

Looks like @kinghifi said the same thing much earlier on in this thread.

As as for the chassis dampening and removal if the steel bolt, washer, and top plate, not sure how much of the SQ improvement is due to these things.

lak's avatar
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lak
4,642 posts
 
Thanks for the update grannyring.
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