RMB-1075 or RMB-1085

[Guybrush]

I was wondering if replacing my RMB-1075 amplifier with the new RMB-1085 Class D amplifier would improve or make my system sound worse.
I have 4 Magnepan SMGc and a Magnepan CC3 center speaker (which are all 4 ohm speakers) and a Velodyne DD12 powered subwoofer.

P.S.
I also have a PS3 as source and an RSP-1066, which I am looking to replace as soon as Rotel makes a new RSP-1069 (the gurus say in september?)without all the video related problems. I know that there is a fix, but spending a lot of money for a device that needs fixes doesn't sound good to me.

Thanks to everybody,
Simone
Grosseto - Italy

[mjb]

I like Rotels Class D amps very much, and replaced a 1075 with a 1077. The improvement was huge, not to mention the space saving. One of the advantages of Rotels Class D amps is their ability to track low impedance loads with ease, which is something you can take advantage of with your 4 ohm speakers.

[shadow 8]

I agree with Mike. My 1085 was sonically superior to my previous Rotels IMO (1095, 1080 and 1070). If you do a search there is a thread on this forum regarding the 1085 in which a number of us gave our impressions on this amp.

[style]

Hi Guybrush,

I have replaced my Rmb1075 with 2x Rb1092 and a Rb1091 for the center.

I agree with Mike shadow8: go with the Rmb 1085.. or better Rmb1077.


If do will I life in Switzerland... wrtie me a privat mail...

greetings from Switzerland
Omar

[Tha Freak]

Quite interesting…

I’m looking to go for the separate way in the future…

I presently have a RSX-1055 receiver rated 5 x 75w.

Will I see a difference adding a RMB-1085 (5 x 100w class D) or a 1077 (7 x 100w class D) ?

Since I will replace the receiver with a pre/pro+amp combo, I was wondering if I could add the amp in the meantime and benefit from a clearer and better sound ?

[Nolan B]

Quite interesting…

I’m looking to go for the separate way in the future…

I presently have a RSX-1055 receiver rated 5 x 75w.

Will I see a difference adding a RMB-1085 (5 x 100w class D) or a 1077 (7 x 100w class D) ?

Since I will replace the receiver with a pre/pro+amp combo, I was wondering if I could add the amp in the meantime and benefit from a clearer and better sound ?

a big yes!

I went from a 1055 toa 1067 and felt the difference was big. Then went form the 1067 to 1077 and felt the difference was huge. So going form a 1055 into a 1077 as an amp would be classified as a major upgrade in my opinion. I can speak for the 1085 as I have never heard it.

[Mig17]

1085 cannot campare to 1095 or 1080
is just the samp/speakers matching problems
Do you know the rule: more money = better sound :T

I agree with Mike. My 1085 was sonically superior to my previous Rotels IMO (1095, 1080 and 1070). If you do a search there is a thread on this forum regarding the 1085 in which a number of us gave our impressions on this amp.

[cug]

Do you know the rule: more money = better sound :T

Pfffff ...

[style]

Mig17:
Do you know the rule: more money = better sound :T

???

Sorry Mig17 but I agree with cug.

more money / more expensive gear = better sound

Nothing so different from reality!!!!

you can be "gaers" for $ 100000.- and I go out the half and the winner is??


too much poeple have in your "room" tooooooooo much from what they need!!! --> always the las version, the last product,... but wy don't needed really all this ops:
ah, the winner: hier is/are the different Classè, B&W,..........

Omar

[Mig17]

Sorry style
In the range of products of Rotel
more expensive 1080 or 1095 equipments alot better than 1085

[cug]

Sorry style
In the range of products of Rotel
more expensive 1080 or 1095 equipments alot better than 1085

Sure you can prove that in a double blind a/b test?

[style]

Rotel RMB D class

Hallo Mig17
without doubt.

Rmb1077 combo with RB0192 is not even comparable with 1095 and 1080!

Many here in the forum with their experience and not by tests made by specialized newspapers you can confirm!
(I personally RMB1075 first hour all RB1092 and RB1091)
In the 1090 Switzerland was also lifted by low demand for catalog ...
Having I / O bilaciate on 1095 and not available on RB1092 & Co.
Is the only point pro for the (now) old laws series 1095-1075-1080.

@cug, in a good Ht room with soundproofing is not the powerampli that makes the difference!!
Yes blind can prove the different...

Omar

[cug]

Yes blind can prove the different...Omar

Take Richard Clark's amplifier challenge and prove it. Brings you 10000 dollars. Easy earned money, right?

[style]

Sorry cug,

I don't speak so good english but your are with me with the opinion that the
new rotel d class are better vs. rmb 1075/95 or?

I think if a well-balanced between powerample / pre-pro / speakers
A good room and not have to spend exorbitant sums to get
Results of the same or very similar systems that cost twice or three times!

All want to have the top, latest models, versions, etc.. But as already written is not true most expensive = best sound.

Or?

Omar

[cug]

Sorry cug,

I don't speak so good english but your are with me with the opinion that the
new rotel d class are better vs. rmb 1075/95 or?

I think if a well-balanced between powerample / pre-pro / speakers
A good room and not have to spend exorbitant sums to get
Results of the same or very similar systems that cost twice or three times!

All want to have the top, latest models, versions, etc.. But as already written is not true most expensive = best sound.

Or?

Omar

Actually, given the following:

- amplifiers exactly level matched
- amplifiers having a more or less flat frequency response 20Hz to 20kHz
- if frequency response differs too much, an equalizer is added to one of them for leveling (listener decides to which one)
- both amps are driven without clipping

Nobody was able to hear a difference between any two amplifiers in Richard Clark's amp challenge - even between tube and solid state.

So, yes, there are differences in amplifiers. There are good amplifiers and there are bad amplifiers. But it nearly never comes down to "good sound" or "bad sound" because nearly ALL modern amplifiers (at least all quality brand products) have near flat frequency response. If they don't have that, it can be changed with an equalizer - which does exactly what its name suggests: makes two different sounding amplifiers sound equal. No matter whether one costs ten times more than the other.

What I want to say is, when you buy an amplifier:

- get one that matches the power requirements of your speakers and can handle the load the represent (nearly all modern amps over 100W are more than enough for that)

- get the one where you either like the frequency response or add an equalizer to the system

- get the one where you are confident in build quality, resale value, warranty and so on

- don't try to convince yourself that "more money == better sound", this has never been proven in any scientific test (testing method should be scientific - blind ab, level matched)

So overall - we are on the same line: I also think that 1092 is a better amp than a 1080, but not because it "sounds better". But it has a better power handling, better idle consumption, can handle difficult loads better, looks better, is cooler, has a better resale value.

Sound - no, if they have differences in frequency response, it's a matter of having some good mearuring equipment, level the frequency response and you'll not be able to hear a difference under the circumstances I mentioned above.

And, if you really buy the most expensive amp you can afford: just believe in it and you'll hear what you want to hear: that it sounds better than all the cheap crap. :B

[WI Rotel]

Actually, given the following:

- amplifiers exactly level matched
- amplifiers having a more or less flat frequency response 20Hz to 20kHz
- if frequency response differs too much, an equalizer is added to one of them for leveling (listener decides to which one)
- both amps are driven without clipping

Nobody was able to hear a difference between any two amplifiers in Richard Clark's amp challenge - even between tube and solid state.

So, yes, there are differences in amplifiers. There are good amplifiers and there are bad amplifiers. But it nearly never comes down to "good sound" or "bad sound" because nearly ALL modern amplifiers (at least all quality brand products) have near flat frequency response. If they don't have that, it can be changed with an equalizer - which does exactly what its name suggests: makes two different sounding amplifiers sound equal. No matter whether one costs ten times more than the other.

What I want to say is, when you buy an amplifier:

- get one that matches the power requirements of your speakers and can handle the load the represent (nearly all modern amps over 100W are more than enough for that)

- get the one where you either like the frequency response or add an equalizer to the system

- get the one where you are confident in build quality, resale value, warranty and so on

- don't try to convince yourself that "more money == better sound", this has never been proven in any scientific test (testing method should be scientific - blind ab, level matched)

So overall - we are on the same line: I also think that 1092 is a better amp than a 1080, but not because it "sounds better". But it has a better power handling, better idle consumption, can handle difficult loads better, looks better, is cooler, has a better resale value.

Sound - no, if they have differences in frequency response, it's a matter of having some good mearuring equipment, level the frequency response and you'll not be able to hear a difference under the circumstances I mentioned above.

And, if you really buy the most expensive amp you can afford: just believe in it and you'll hear what you want to hear: that it sounds better than all the cheap crap. :B

Couldn't put it better myself :T
What differentiates an amp from another is it power handling capabilities! If your speakers are very efficient most amps will do a good job on them, however, if your speakers are a difficult load due to low sensitivity or a complex arrangement (multiple speakers) then the ability to drive the system under all conditions without distorting is what separates the men from the boys.
What makes all the difference in a system is the speakers. The dilema of the amp is its ability to make them sing at the best of their ability. Futhermore as far as speakers are concerned personal preference is a big issue. Most guys around here are BW fans (myself included), particularly because we enjoy a neutral sound character with little coloration, however, many people are not looking for the "perfect radiator", to many most BW's have a weak bottom end! This enthusiast is the kind that thinks a sub sucks because they can't hear it (no boom) !

[style]

ampli-power

Hi cug,
I agree 100% from what do you have write... :T

one powerampli is good abd nobody can say (blinded) ah this is Rotel, this is Classè.. averyone like a sound produced from xx ampli; is a a personaly choice.
the same for the speakers.
if I say that thr rmb1077 is better as rmb1095 is sure a personaloy choice _
is a big affermation, good or bad ampli is not (at least all quality brand products..).
I can only that I PREFER the new Roitel Dclass - personal opinonion....
A difference between an amp of $ .10000 against a $ .3000 should be justified, even in the construction, design, ... (Quality of the sound ...) but a difference has to be.
Omar