Quote:
Originally Posted by Hifisand
i do want to say thanks for the welcome a few weeks back when I first posted.
As you own JC-1's, just wanted to tell you about what I just finished doing. Read in old Audiogon forum message from Bob Crump where he said the JC-1's needed 60 to 90 days of break-in. Mostly because of those big capacitors. Well I played the system JC-1, 2, 3, 3.7 for 90 straight days and what an improvement. That's 2,160 hours. The 3.7's are broken-in and much improved also. The bass of the JC-1's is much smoother and not so pronounced over the mid and upper levels. This difference showed up on a 31 band sound level meter the PAA-3. At sixty days my JC's were still not there yet. 1600 hours was time when things started changing for the better. my JC's are stock, but I plan to get supreme fuses in future. Have supreme fuses in the 3.7's.
A friend brought over his Ming Da 3008A Class A 40w SET amps (805 with 300B driver tube) to see if they could drive the 3.7's. These are well broken -in. They can drive to 80-95 dBC levels and they sounded great ((better than my JC-1's at the time (600 hours)). So good I bought a pair of the latest Ming Da 3008C's to see how good they will sound. They need 50 hours minimum and I am up to about 75 hours. They only play from 80- 95dBC and sound fantastic so far.
Are they better than the JC-1's? YES and NO. The minute details are slightly better on the Ming Da. However the JC-1's are sound more forward with drive. Both sound like the musicians are in the room (3.7's have a major part in that). I only plan to keep one set of amps and it will be a hard choice. Need to do more with wires before any final decision can be made. Ming Da's have the "less good" wires now. Am upgrading to new even better wires (most expensive I have ever tried). More break in to go on ming Da and wires.
Any way. Your JC-1's will get better in the future if you have not reached 2160 hours.
Sorry for the length of this.
good Listening!
Dave
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'been traveling this week and just getting caught up with important stuff!
Welcome Dave!
OH MY YES, on the JC-1 break-in. And strangely enough, early on, they would sound better one day than the next on occasion. I've got to now be pushing 1000 hours, but still way short of 2k...
In any case, my plan remains, when the 20.7s show up, will run them with the JC-1s for awhile. Next upgrade would then likely possibly be the JC-1s or, possibly move from the ET-5 to GAT. or new DAC, or New..... yeesh as always it's hard to stay on plan!
