Luxman M900u Monos and C900u

Since the M-900u is stable into 1 ohm loads in stereo (rated at 1200W + 1200W), bridged mono operation will be much better than most monos can achieve without bridging.

Exactly! Hence my reason for asking about amps. I think this pairing with B&W should be awesome. Even the price points line up beautifully. And Luxman Japan uses B&W in the factory for testing.


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Since the M-900u is stable into 1 ohm loads in stereo (rated at 1200W + 1200W), bridged mono operation will be much better than most monos can achieve without bridging.

Please note that 1200W is peak and not continuous.
 
Please note that 1200W is peak and not continuous.

Adyc, yes, you are correct; however, this amp is designed to excel in both stereo and bridged monaural configurations (2400 watts instantaneous into 2 ohms monaural), so no worries for most demanding speakers.
 
Adyc, yes, you are correct; however, this amp is designed to excel in both stereo and bridged monaural configurations (2400 watts instantaneous into 2 ohms monaural), so no worries for most demanding speakers.

I agree. It seems that this amp is very good for low impedance speaker. Some amps simply shutdown at 1 ohm.
 
Hey Mike.... any big difference upgrading from L-509X Integrated to an M-900u Amp?
 
Sorry, but I couldn't not respond to this: "We can hear everything we measure, but we can't measure everything we hear" This is patently false. We can measure frequencies up to 100Ghz, and sound levels of 180db (a volcano explosion) and up. Can you hear all of that?
Actually, we can measure everything we hear, although not always know what to measure. maybe that is what you meant.
 
Sorry, but I couldn't not respond to this: "We can hear everything we measure, but we can't measure everything we hear" This is patently false. We can measure frequencies up to 100Ghz, and sound levels of 180db (a volcano explosion) and up. Can you hear all of that?
Actually, we can measure everything we hear, although not always know what to measure. maybe that is what you meant.

That is true, but we also can’t measure and interpret things we can hear. We can’t measure soundstage and if we could, we wouldn’t be able to interpret it, in addition to other items such as tone.

I’m curious, you joined in 2015 and this is your first post?

A new timely post today by Paul McGowan of PS Audio:

https://www.psaudio.com/pauls-posts/when-measurements-take-a-backseat/
 
Gotta agree with the rest of this thread. the Lux C-900u is superb. very well built, very well balanced smooth sound, very quiet.
For the price of admission its a high end bargin.

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Luxman is awesome and the C900u really is superb. Glad you agree.
 
The PS Audio video parallels what Emmanuel Go of First Sound Audio told me about how he designs his preamp. I talked about it being an "Art" on Audionirvana and a poster "Tech" got all over me saying i was all wrong. It's all science. We can measure everything. I disagreed. I don't believe measurements are the end all. Science is needed to deaign the circuit. It's the "artist" who tweeks the circuit by ear to make it sound a certain way. Ot so I believe, and some builders I know practice.
 
I agree. It’s like every cook can follow a recipe, but the great ones tweak here and there for the best tasting dish.


The PS Audio video parallels what Emmanuel Go of First Sound Audio told me about how he designs his preamp. I talked about it being an "Art" on Audionirvana and a poster "Tech" got all over me saying i was all wrong. It's all science. We can measure everything. I disagreed. I don't believe measurements are the end all. Science is needed to deaign the circuit. It's the "artist" who tweeks the circuit by ear to make it sound a certain way. Ot so I believe, and some builders I know practice.
 
Mono Vs Stereo:

- Mono has bigger soundstage.
- Mono Sounds slightly smoother.
- Mono has better transients
- Stereo has more focus, tighter soundstage

Overall, very close sonically. The power cable you pick has a MUCH bigger impact on the sound. For example, choosing the right power cable makes a much bigger difference than mono Vs Stereo.

Recommended cable on the Luxman: AQ Tornado, Hurricane, etc.



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Thinking about buying a M-900U because it has enough power for my Revel Salon 2 but your impression makes me want 2 for monos :D No home demo is available in my country so I have to buy them blind to replace my current Mcintosh MC462. Do you think one (or 2) Luxman M-900U(s) will be a good match with the Revel Salon 2?
 
Thinking about buying a M-900U because it has enough power for my Revel Salon 2 but your impression makes me want 2 for monos :D No home demo is available in my country so I have to buy them blind to replace my current Mcintosh MC462. Do you think one (or 2) Luxman M-900U(s) will be a good match with the Revel Salon 2?
The Revel Salon 2 speakers thrive on high power and would definitely benefit from a pair of Luxman M-900u amps.
 
Thinking about buying a M-900U because it has enough power for my Revel Salon 2 but your impression makes me want 2 for monos :D No home demo is available in my country so I have to buy them blind to replace my current Mcintosh MC462. Do you think one (or 2) Luxman M-900U(s) will be a good match with the Revel Salon 2?

The Salon 2’s need SLAM! With the wrong amps, they can sound like to woofers are broken. You need a bottom up amp. Bass first amp. May I suggest an Antilleon Evo.

The M900’s are beautiful sounding, wonderful mids and highs, but they aren’t a bass first amp.


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The Revel Salon 2 speakers thrive on high power and would definitely benefit from a pair of Luxman M-900u amps.
Yes. I think I will get 2. When I began this hobby, me and my brother went to a shop to audition some hifi gears, the Mcintosh and Sonus Faber. I thought the system the shop played by then was Kharma speakers with 2 M-900Us when we stepped into the shop. We was blown away by the sound of Kharma and 900U pre pow, never thought that it could be such natural and life-like. But it was more than 3 years ago and I did not want to spend that much money for 'beginner' by then.
 
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