Atma-Sphere M60 monoblocks + ML ESL 11 = Inferior combo


Hi guys,

Today I borrowed home a pair of pure OTL-Tube M60 mononblocks to combine with my ML ESL 11s (which base are partially driven by a Class-D amplifer of 275 watts) with very poor results. Unfortunately, although the M60s where only to cater for the diaphragm panels (at least in theory), when combined with the speakers, the soundstage collapsed, vocals felt muffled and absent deep into the sound picture, almost hidden away, and the base went out of control (got larger and louder in a negative way). I also lost details. The Monos are a pair of brand new demos and shined this morning together with a pair of smaller Vivid monitors.

My current SS - a Bryston 4B3 delivers so much better combined with the ML ESL 11s. Someone that can explain what I did just experience? I thought that OTL tubes and High sensitive Martin Logans of todays generation where to be a marriage in heaven.

Kind regards 

 

  

andy_wonderwall

@bdp24

Thanks for advice. 

These speakers sounds interesting. Will not break the bank either. 

Its a shame no dealer in Sweden carries them. Would be interesting to listen to them to see how they compete (in my ears) to a pair of large MLs.

KR

@andy_wonderwall have you tried pairing up a really good tube preamp in front of your Bryston 4B3 amplifier?  If not, this can yield another very nice result too.  What  preamp are you using with your Atma M60 mono tube amps now?

@andy_wonderwall -

' I am lucky to have a dealer that are willing to borrow me MBL N15s monoblocks so that I can compare different technologies on the MLs'.

 

The MBL's should be able to drive just about anything, but if I were to get them, I would just get a pair of Radialstrahler's.

Bob

 

Andy, Roger Modjeski designed his Music Reference RM-200 tube amp specifically to deal with low-impedance loudspeakers. When they occasionally become available on the used market, they fetch around $2,000 for the original version, a grand more for the Mk.2. A pair of KT-88 tubes are used to create 100 watts (per channel), into all impedances. The RM-200 is a VERY unusual tube amp.

In his original review in Stereophile, Michael Fremer placed the amp in the mag's Class A Tube category, and in a follow-up review found the Mk.2 iteration to be an even better amp. It has remained his "moderately"-priced reference tube amp for over a decade, and he recently declared the RM-200 MK.2 to be one of his most-cherished hi-fi possessions.

@decooney 

A Theoretica Applied Physics Bacch SP-adio. It is a crosstalk eleminating sound processor with a DAC doubling as a pre-amp. Works gr8 for me. But combining with a nice tube preamp is also something to consider!