breaking process - what progress expected ?

nuforce-casey · « **Reply #20 on:** 9 Feb 2006, 08:17 am »

Quote from: Antoine

But that's the "problem", the 16 solid core copper wires in my cable are not twisted, they are aligned in parallel, not touching each other except in de plugs of course. By twisting the cables you make them indeed more able to withstand EM/RFI noise. As I see it in your explanation there's no difference between one single core or 16 cores when they are not twisted, right? So in my cable I would still suffer from the noise excited from the NuForces?

Guess with the Nordost flatline, you have 16 antennae in parallel

Antoine · « **Reply #21 on:** 9 Feb 2006, 08:27 am »

That's what I thought!

But then I understand you and Paul should also be looking for different cables then.

So there's no way to stop this RFI noise exciting from the NuForces because of its design? (500kHz switching power supply)

skrivis · « **Reply #22 on:** 9 Feb 2006, 02:20 pm »

Quote from: Antoine

That's what I thought! But then I understand you and Paul should also be looking for different cables then.

So there's no way to stop this RFI noise exciting from the NuForces because of its design? (500kHz switching power supply)

You would normally put a ferrite core on the cables connected to the unit, just like you should see on the cables (like the monitor cable) on the back of your computer.

The maker could also put ferrite cores or beads inside the chassis.

None of this is likely to be wonderful for the music.

I wonder if the NuForce amps are FCC Class B rated?

ctviggen · « **Reply #23 on:** 9 Feb 2006, 02:32 pm »

Is there an analysis of what this RFI is? I have a spectrum analyzer. I wonder if I could sense it? I doubt it -- 500 kHz is too fast. My spectrum analyzer is built into an oscilloscope and I don't think the oscilloscope's bandwidth is high enough to view 500 kHz.

rustydoglim · « **Reply #24 on:** 10 Feb 2006, 01:17 pm »

Off course it is FCC rated.
skrivis, have you heard Ref 9 yet?

ctviggen · « **Reply #25 on:** 10 Feb 2006, 02:00 pm »

I've been using the Ref 9 for powering my center channel. I've only been using it for a few days, though, and only for items "taped" on my Replay PVR. No movies or HDTV as of yet. I have to say that it's a very, very revealing amplifier. The other night, I went up to the center channel because I couldn't take the popping coming from it. I realized the popping was from the announcer's microphone! Now, that's something I didn't hear before. I also hear background noises (in Antiques Roadshow -- yes, I am a dork!) to a degree I've not heard before. In other words, the people milling about is what I'm hearing. Additionally, the voices have a realism that I'd not heard before. I've not heard a hint of any extraneous (i.e., not in the original material) noise. Zero, zilch, nada.

On the other hand, it's like going from an amplifier used to play records where the pops, hiss, and scratches were in the background, to an amp that not only has realism for music but also causes the pops, hiss, and scratches to come to the foreground. Now, as this amplifier is so revealing, it almost makes it hard to listen to bad sound recordings for shows. This weekend, I'll watch a DVD (during the snow storm/blizzard that's supposed to hit), and I'll see what happens to voices of DVDs. As my system is transitioning to a DVD-only and HDTV-only system, I'll be interested to see what it'll be like.

cynamon · « **Reply #26 on:** 10 Feb 2006, 03:49 pm »

Hey, this it topic is now far away from "breaking" issue.
Nevermind.
Yesterday I take back my IA-7 to dealer studio. We hooked it up to the system to check if all is OK and to give me the farewell session.
As a player worked Gamut. Damn, it was a really great sound. The problem is Gamut cost 5k$ in Poland. So, the NF is very revealing and do not be missled by its price. It is relatively cheap but does not allow to spare on source components.

My old CDP which does not work with NF now deliveres good sound hooked up with ASL 1001 tube amp. But comparing ASL+Gamut to IA-7+Gamut then NF wins. Tricky.

If you find any budget class CDP which works with NF pls let me know

paul canady · « **Reply #27 on:** 10 Feb 2006, 04:27 pm »

Cynamon, this is what I have been saying about Nuforce. You will hear your weakest link which starts with the first in the chain, cdp. I have two upgraded cdp's which are great and now my weakest link is the pre/amp.
I will be getting a Nuforce p9 pre to match with my Arcam processor. Don't look at the price of the Nuforce amps as they are priced way below a reference quality amp. I dont know what your budget is but just a suggestion, get the 8.02's on closeout and a p8 pre/amp, even if you have to save up for the p8. Meanwhile have your cdp upgraded for about $800us. Having a stellar cdp will be a huge difference. What I am hearing is that the Denon 2900 upgraded is great with these, beat out a couple stock players in the 10k range. It is amazing that even the 10k players and above have cheap parts inside.

rustydoglim · « **Reply #28 on:** 11 Feb 2006, 05:42 am »

Quote

If you find any budget class CDP which works with NF pls let me know

Try Oppo OPDV971H with an Apogee DAC.
OPDV971H can play DVD-Audio for 192kb/s
Or use it to play CD and use DAC for upsampling.
Total cost of the whole setup is half the price of an upgraded CDP.
What you get is also one of the best DVDP in the world.

paul canady · « **Reply #29 on:** 11 Feb 2006, 11:34 pm »

Jason, That Apogee combo is only $400?

paul canady · « **Reply #30 on:** 12 Feb 2006, 03:56 am »

Hi Jason, Does the Marantz SA11-S1 sound better than the Apogee and Oppo combo?

paul canady · « **Reply #31 on:** 15 Feb 2006, 07:19 am »

Albireo, The dealer is pretty close to the break in period being at 190 hours! I know mine has reached over the 150 hr mark and it was like someone had flipped a switch. The bass was the same but the mids and highs changed. The mid bass got a little richer and the highs are smoother.
Same openess and staging. I am wodering if they change at the 300 hr mark. The mid bass is the weakest part of these amps on my system and probably most others. But, I would not give up the stage that these throw out for a better mid bass. These amps would be better judged at the 150 hour mark and above. A friend of mine upgraded his 9.02's and said if the new 9 SE amps sound anything like this than everyone will be sending in there 9.02's for upgrading. Nuforce set out the hook and bait!

KJ · « **Reply #32 on:** 15 Feb 2006, 02:46 pm »

Quote from: paul canady

Does the Marantz SA11-S1 sound better than the Apogee and Oppo combo?

The SA-11S1 is a very fine unit, but it is also much more expensive than the Apogee/Oppo combo at $3500 retail. Price aside, I think it sounds better.

-KJ

rustydoglim · « **Reply #33 on:** 17 Feb 2006, 04:16 am »

Quote

A friend of mine upgraded his 9.02's and said if the new 9 SE amps sound anything like this than everyone will be sending in there 9.02's for upgrading. Nuforce set out the hook and bait!

Hey hey hey, we don't play tricks

.02 is due to minor improvement so it cost us mainly labor and R&D so we offer it pratically for free.

SE is the result of more R&D and significant parts upgrade (not the amp circuit but power section). Read about the SE improvement on our website. Not everyone have the world class system to hear the difference in SE but the good news is that upgrade is always available

paul canady · « **Reply #34 on:** 17 Feb 2006, 04:57 am »

Jason, he upgraded his own unit. There are people out there that can upgrade equipment and make them sound so much better! I would not own a stock cdp! That is one of the biggest improvements you can make to a system. If you do not have a very good quality cdp than the Nuforce amps can not shine. Like I said before, these amps are not your typical $2500 amps. They have a sound like no other amp and I have read where a tube output stage is great with these.[/quote]

rustydoglim · « **Reply #35 on:** 17 Feb 2006, 05:49 am »

Agree.