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Post by garbulky on Sept 26, 2014 15:50:08 GMT -5
Porscheguy: I guess I misunderstood what you posted about class G and emotiva. Thought there was some new model I didn't know bout.
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Post by AudioHTIT on Sept 26, 2014 15:50:17 GMT -5
I would say call Emotiva and ask them.. No you didn't!
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Post by Porscheguy on Sept 26, 2014 16:21:06 GMT -5
Porscheguy: I guess I misunderstood what you posted about class G and emotiva. Thought there was some new model I didn't know bout. No Gar, I was just joshing I just always think its funny when people ask about new products here (meaning the OP). They tell us nothing!!
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Post by GreenKiwi on Sept 29, 2014 0:21:00 GMT -5
Compared to other CLass D setups I've seen, that Rotel unit seems awfully messy inside. I would expect a lot more refinement for $3000. I would have to agree. I like clean:
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Post by djoel on Sept 29, 2014 8:14:43 GMT -5
I do love my nCores (btw, NAD has apparently secured a deal to OEM the nCore 400s. They much have had a good deal, with a lot of volume. Stereo amp is $3k, rather than $1500 DIY. Here's the inside of that amp: Compared to other CLass D setups I've seen, that Rotel unit seems awfully messy inside. I would expect a lot more refinement for $3000. It's five channel in a stealth box, it's kinda difficult to route cables, and such in a small enclosure. Djoel
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Post by Cogito on Sept 29, 2014 9:52:21 GMT -5
Compared to other CLass D setups I've seen, that Rotel unit seems awfully messy inside. I would expect a lot more refinement for $3000. It's five channel in a stealth box, it's kinda difficult to route cables, and such in a small enclosure. Djoel I see a fair amount of empty space in that box. Modules could have easily been spaced enough so wiring could have been routed between them. I guess I just expect more for $3000.00.
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Post by Cogito on Sept 29, 2014 9:59:37 GMT -5
Compared to other CLass D setups I've seen, that Rotel unit seems awfully messy inside. I would expect a lot more refinement for $3000. It's five channel in a stealth box, it's kinda difficult to route cables, and such in a small enclosure. Djoel I guess I just expect a LOT more for $3,000.00.
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Post by memotiva on Sept 29, 2014 18:32:12 GMT -5
The Rotel class D 5 channel amp MSRP is $1200 with an ebay price of $600. Much like in a car, I could care less about what the internals physically look like if the thing performs.
Thanks to the Emo tech for providing an answer. Not the one I wanted, but it's definitely good to know and nice support for the community. My plan now is the Emotiva 200 Pre with the Rotel amp.
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Post by garbulky on Sept 29, 2014 22:34:59 GMT -5
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hemster
Global Moderator
Particle Manufacturer
...still listening... still watching
Posts: 51,920
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Post by hemster on Sept 29, 2014 23:00:19 GMT -5
^At 12,000 Euros (well north of US$15k) it had better be pristine neat! Devialet gear sure is purdy though. It reminds me of the Bang & Olufson brand.
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Post by rogersch on Sept 30, 2014 1:26:28 GMT -5
Abd it really sounds good also!
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Post by memotiva on Oct 6, 2014 11:14:09 GMT -5
Well you need pristine neat when you're selling 12k euros of snake oil
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Post by djoel on Oct 6, 2014 11:50:10 GMT -5
Not understanding what I'm looking at,looks like a PITA just to remove, or add cables. Unless the pic it's right side up?
Djoel
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Post by roeru117 on Oct 8, 2014 2:17:08 GMT -5
Devialet, very nice but very expensive. That amp can make even B&W sound decent. It would be very nice to see a class d or even a real digital amp from Emotiva. I swapped my xpa5/umc200 for a nad c390dd a while ago and it sounds so much better in stereo. It's personal, i know but the difference was substantial. That makes me very curious what Emotiva could do with this design. And a big plus is the silence of the amp itself in stead of the hum of the xpa. The reduced weight would even make it interesting for international shipping.
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Post by mgbpuff on Oct 8, 2014 7:42:41 GMT -5
Not to be critical, but how does a 2 channel unit replace a multi-channel unit? Also, I have XPA-1. UPA-2, X-100, and XPA-7 amps and they are dead, I mean dead, quiet. True that analog will pick up noise and IMF more so than digital designs, but digital designs emit these same interferences. Your HTPC and your placement and cabling paths may be responsible for some of the noise, IMO. By the way, what is a pure digital amp, you are aware that the human ear can not discern digital? One that has a digital instead of an analog input? Class D must convert to a PWM signal somewhere in the chain before brute filtering the power PWM signal into analog, so either an A/D (which accomodates most other input devices on the market) or a D(whatever)/D(PWM) conversion is required in the Cl D amp. What advantage is served by 'real digital"?
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Post by sct on Oct 8, 2014 7:54:46 GMT -5
Yes, you can have a pure digital amp, right up to the point where it pushes the signal out to the speakers. NAD does this as do others. And it will remain this way until we have digital speakers. Good luck with *that*...
SCT
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Post by mgbpuff on Oct 8, 2014 7:58:20 GMT -5
Really?
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Post by sct on Oct 8, 2014 8:02:39 GMT -5
Yep, "really".
SCT - Carry on...
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Post by roeru117 on Oct 8, 2014 8:26:18 GMT -5
@ mgbpuff, i'm sorry if i wasn't entirely clear about my setup. I used the Emo combo for stereo and surround. The NAD now works as a stereo amp and doubles as power amp for a Marantz. Since the NAD doesn't do surround, i can only compare them in stereo. Between both setups the cabling hasn't changed. I troubleshooted the xpa and the hum was coming form the unit itself. Perhaps something to do with the Dutch power grid.
Class d mostly refers to the psu that is used in the amp. The rest of the signal path is often analog. Concerning the digital part of the NAD; a little copy/paste from their website: Like the M2, the C 390DD has no analogue stages in the signal path, keeping music in the digital domain right up to the speaker outputs. All preamp functions are executed in the digital domain without the phase shift, noise and distortion that plagues all analogue designs regardless of price or pedigree.
Don't get me wrong. I loved the power and the sound from the Emotiva. That's why i am curious what they can do with this technology.
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Post by mgbpuff on Oct 8, 2014 8:30:11 GMT -5
sct - We have digital speakers now, don't you keep up with the industry? But these speakers merely have D/A's built into them with some type of amplification be it Cl D or other. Cl D sort of pushes digital to a speaker but it must be a power PWM and the filter/speaker passive filter must convert it to an analog signal before it causes speaker movement. Since the speaker is part of this filter, it influences the result which is not conducive to interoperability with a wide range of speaker products out there. Because of the complete control over all components including the speaker itself, Cl D is better suited to powered speakers than it is to components. Really!
roeru117 - The hum you are talking about is most likely transformer hum. Transformers need to have more iron for 50 hz operation than for 60 hz operation. American products are more likely than European products to have transformers that are just barely adequate for 50 hz. Conversely, European 50 hz transformers are always adequate for 60 hz (votage output is another matter). Even digital products must have transformers.
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