+- Devialet Chat (https://devialetchat.com)
+-- Forum: Devialet Chat (https://devialetchat.com/Forum-Devialet-Chat)
+--- Forum: Devialet Expert 400/800, Original d'Atelier, Expert 210/440/1000 Pro (https://devialetchat.com/Forum-Devialet-Expert-400-800-Original-d-Atelier-Expert-210-440-1000-Pro)
+--- Thread: Does anybody have these numbers? (/Thread-Does-anybody-have-these-numbers)
Does anybody have these numbers? - Fred - 24-Sep-2015
Hello!
I was wondering if anybody had the numbers for Watt output in 8 ohm on an 400?
And how many watt is the class A amp itself?
Sorry if these questions seems strange, I am new to Devialet.
RE: Does anybody have these numbers? - f1eng - 24-Sep-2015
I do not know the power into 8 ohms, but the class A amplifier is controlling the voltage all the way up to maximum power, with the DSP controlling the current to make sure the voltage controlled by the class A amp is not compromised. So the class-A amp neither has nor needs a power rating on its own.
RE: Does anybody have these numbers? - IanG-UK - 24-Sep-2015
Paul Miller, when he tested the 200 predecessor, the 170, for HFN, gave these numbers:
120W into 8 ohms at 1000Hz
240W into 4 ohms at 1000Hz
My recollection from hearing the Devialet Head of Engineering is that the class A amp, on its own, is around 5W, but as f1eng says the class A does not work independently.
RE: Does anybody have these numbers? - hrky_zmaj - 24-Sep-2015
(24-Sep-2015, 14:22)IanG-UK Wrote: Paul Miller, when he tested the 200 predecessor, the 170, for HFN, gave these numbers:
120W into 8 ohms at 1000Hz
240W into 4 ohms at 1000Hz
My recollection from hearing the Devialet Head of Engineering is that the class A amp, on its own, is around 5W, but as f1eng says the class A does not work independently.
Hi,
here You can see that only A-class can play by its own.
http://www.6moons.com/audioreviews/devialet2/3.html, but U need appropriate speakers!
regards , Hrky
RE: Does anybody have these numbers? - Jean-Marie - 24-Sep-2015
The class A amplifier on the the D premier was 6W and I don't have any information / hints that it has changed on the 120, 200, 250.
As for the actual power it is quite easy: the 200 is 200W over 6 ohms, therefore it would be 200 * 6 / 8 = 150W over 8 ohms.
Jean-Marie
RE: Does anybody have these numbers? - Antoine - 24-Sep-2015
Indeed the class A stage can operate on it's own but it's not designed to. It's been done merely for demonstration purposes to 'prove' there's a fully functional class A stage which is in the "lead". Class A stage can be seen as the operator at the steering wheel and the class D stage is adding the power steering. This certainly should not be confused with the type of class A/AB amplifiers that can play up to 'x' watt in pure class A mode before switching to class AB operation.
A Devialet 400 can indeed output 6/8 * 400 = 300W per channel in 8 ohm.
RE: Does anybody have these numbers? - IanG-UK - 24-Sep-2015
Whilst I think the single 200 is 200W into 6 ohms (which links in broadly with the Miller figures) and a 400 is 400W into 6 ohms, I can't see how this works with the 250/800 - cannot be 250W single and 800W as a pair?
RE: Does anybody have these numbers? - octaviars - 26-Sep-2015
(24-Sep-2015, 22:27)IanG-UK Wrote: Whilst I think the single 200 is 200W into 6 ohms (which links in broadly with the Miller figures) and a 400 is 400W into 6 ohms, I can't see how this works with the 250/800 - cannot be 250W single and 800W as a pair?
At Soundstage ultra the test of the 400 this is writen in the text.
Each model number indicates the power output into a 6-ohm loudspeaker load, though in the case of the 400, 600W continuous and 6000W peak are available per channel into loads as demanding as 1 ohm.
http://www.soundstageultra.com/index.php/equipment-menu/528-devialet-400-mono-integrated-amplifier-dacs
RE: Does anybody have these numbers? - Confused - 26-Sep-2015
(24-Sep-2015, 22:27)IanG-UK Wrote: Whilst I think the single 200 is 200W into 6 ohms (which links in broadly with the Miller figures) and a 400 is 400W into 6 ohms, I can't see how this works with the 250/800 - cannot be 250W single and 800W as a pair?Now for some true confusion.
A while back, it was worked out that the original D500 was in fact 500w RMS / 8 ohm, 670w 6 ohm. Which could hint at why the D800 is, errrm, 800w 6 ohm.
http://devialetchat.com/showthread.php?tid=30&page=4&highlight=offence
I did discuss this strange matter with Devialet's Mathieu Pernot once, he advised that the D200 is effectively on the limit, whereas the D250 is not. The truth is out there ....