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Quote from: nuforce-casey on 8 Nov 2009, 09:44 pmQuote from: paularthur on 8 Nov 2009, 09:28 pmPower in general and the R9SE:It was amazing to hear the system come together over the course of this listening session. I cannot express the importance of keeping, at least transistor, components on all the time. Interestingly, my tube gear does not exhibit the dramatic transformation I heard with the 9?s. Generally, I find the LAMM, Artemis and Music Reference sound right in less than an hour. Once fully broken in of course.I think this has more to do with the power cord and speaker cables used rather than the Ref9 in general. What takes shape during the power-on is that the dielectrics slowly re-orientates/polarizes. WIth thicker dielectric, they simply takes longer to fully polarizes. We used regular factory AC cords and Nuforce Focused Field, and I can hear the sound changes within 1 track (the P9 and CDP are always left on). There are also no big reservoir capacitors in Nuforce products, unlike regular Class A amps (with capacitors as large as coke cans) to charge up.CaseyCasey presented an explanation as to why I heard what I had reported. In retrospect I realized my comments were actually for the entire system going through warm-up. This caused me to think about the entirety of the system as I described what I heard. I concluded there were many things I had not taken into account with regard to my comment on the 9?s need for a long warm-up.I have now revisited this and have come to the most unbiased conclusion I am capable. Let me set the stage. I left all electronics on and playing for no less than 24 hours except for the amps and the Lamm pre-amp. I fired up the Lamm three hours prior to auditioning the system but left the amps off. My hopes were to take all the other components out of the warm up process. Let me also preface with the system in which the evaluation took place:The material was Loreena McKennitt Nights from the Alhambra. A live recording at this venue in Spain. All components have had no less than 250 hours and some considerably more break in time. The source was the MSB Platinum Reference CD III Station with Purist Audio Design (PAD) Aqueous Anniversary AC cord and PAD Proteus Provectus single ended interconnect. The Lamm LL2 served as the pre-amp. It has the PAD Purist Anniversary AC cord and JPS Labs Aluminata interconnects. Power amps are the Nu Force RSEv3 with JPS Labs Aluminata AC cords. All electronics s are powered by a PS Audio Power Plant Premiere with a JPS Labs Aluminata AC power cord into a brand new generic wall outlet. Speakers are supplied by PAD Proteus Provectus bi-wire cable to the Analysis Reference external X-over to which the Analysis Audio Omega Reference full range ribbon speakers are connected by Analysis Audio pure silver jumpers.Initial impression: The system was quite constrained in all dimensions. In particular, it sounded as if I were listening with the performers at the end of a long tunnel. Not reverberant but an image with the corners shaved off the hall and two dimensional. Instruments were merged together in their presentation across a flat horizontal field. There was no ?air? or fine detail. Frequency extremes were significantly truncated. Loreena?s voice had a pasty quality without any depth and a noticeable suppression of accurate sibilance.This continued slowly becoming somewhat more transparent at about the 30 minute mark. By the end of disc one (55 minutes) bass was returning but still poorly articulated and her voice began to take on a more transparent quality though lacking in body. Sibilance had a much more real character.Transparency continued to develop the image but there was a clear lack of depth and the midrange continued to be lacking in body across all the instruments and voice. By the end of the second playing of disc one (about 1 ? hours of play time) bass had substantially returned, was well defined and the hall had gained a more lifelike perspective. It now had edges but three dimensionality was still lacking.About 1/3 into the third playing of the disc (approximately 2 hours) her voice had gained much of its sonority, the hall was becoming quite clear and instrumentation began to be easily identified in space and time. Individual lines of the intricately woven instrumentation was becoming obvious but still lacking in the three dimensionality I know this system is capable of.By the end of the disc and then starting over through the first few songs the hall had become large and was now separated from the speakers. Loreena?s voice had a quality of a woman before you. The instrumentation was alive and vibrant. At this point I left the room.I returned as the forth playing began (about three and half hours of continuous play now). The system had returned to its pinnacle. The players were clearly described in space and the instruments had body and texture. The hall was laid out clearly before me in height, depth and width. This is a truly exciting performance and when the system is right I?m swept up in the vibrancy of the sound and exhilaration of the performance. It took about three hours or so to achieve this. I cannot say if it is the speaker cables or AC cord as suggested. There is no way to test this and turn the amps off. But, if so, it remains the case that a warm-up is certainly warranted whatever the ?actual? reason. I conclude and reiterate, leave the amps and everything else, except tube gear, on for the best sound. Good listening,PaulP.A.U.Lwww.precisionaudioonline.com
Quote from: paularthur on 8 Nov 2009, 09:28 pmPower in general and the R9SE:It was amazing to hear the system come together over the course of this listening session. I cannot express the importance of keeping, at least transistor, components on all the time. Interestingly, my tube gear does not exhibit the dramatic transformation I heard with the 9?s. Generally, I find the LAMM, Artemis and Music Reference sound right in less than an hour. Once fully broken in of course.I think this has more to do with the power cord and speaker cables used rather than the Ref9 in general. What takes shape during the power-on is that the dielectrics slowly re-orientates/polarizes. WIth thicker dielectric, they simply takes longer to fully polarizes. We used regular factory AC cords and Nuforce Focused Field, and I can hear the sound changes within 1 track (the P9 and CDP are always left on). There are also no big reservoir capacitors in Nuforce products, unlike regular Class A amps (with capacitors as large as coke cans) to charge up.Casey
Power in general and the R9SE:It was amazing to hear the system come together over the course of this listening session. I cannot express the importance of keeping, at least transistor, components on all the time. Interestingly, my tube gear does not exhibit the dramatic transformation I heard with the 9?s. Generally, I find the LAMM, Artemis and Music Reference sound right in less than an hour. Once fully broken in of course.
IA7V3 has two big cap and will take longer time to break-in than 9V3SE. Is this a new IA7V3 or upgraded from V2?
I sent my ia-7 v2 for upgrade, but i think they returned a brand new IA-7 v3. I am happy about this. But is this why it will take longer time to burn in? At this moment it does not sound anywhere near the IA-7 v2 before the transplant.
I start to miss the high resolution of my IA-7 v2. The problem is, however, that the IA-7 v2 I have was a second hand one and the previous owner had them run in before passing it to me, so I never know how it sounded when it was new too.
