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atmasphere

Responses from atmasphere

Apogee Scintilla Power
Other than the one ohm load, that speaker is otherwise reasonably efficient and easy to drive. The only time I heard a pair was at a reveiwer's house with our 100 watt MA-1 amplifiers using a set of autoformers to accommodate the load. There was p... 
My speakers are set. Magnepan Tympani IVs
atmasphere - will the RM-200 handle the Tympanis IVs full range or should I plan on a class d for the bass panels?The Tympanis allow either, and the RM200 would have no worries playing full range. The real question then is 'is 200 watts enough pow... 
My speakers are set. Magnepan Tympani IVs
@kythyn   He ran a set of our MA-1s and also MA-2s. IME you can use any good 200 watt tube amp and it will run quite nicely. A good inexpensive example is the RM-200 from Roger Modjesky.  
How come Horn + woofer designs are not more popular?
Look how large a K Horn midrange horn has to be just to get down to 500 Hz were it crosses to a 15 inch woofer. This is one area were that ESLs have a major advantage over both horns and dynamic speakers. You can easily design a speaker that is... 
My speakers are set. Magnepan Tympani IVs
By 'restored' have the 'voice coils' on the membranes been checked out or replaced?This is a speaker that tubes can drive quite effectively. A customer of ours (Kalvin Dahl, formerly of ARC) ran a set of our amps on IVs for quite some time. We fou... 
Which stylus is correct for a Shellac LP
There were 78s recorded with the 'microgroove' process. They are very much the exception! And they will say 'microgroove' on the label.All LPs use the microgroove stylus as Elizabeth pointed out.  
Frequency response + or - 1 dB ??
The problem as Duke pointed out is that speakers are used in rooms- and rooms have an acoustic signature as well as reflections- the latter playing an enormous role in how we perceive sound. If one is being pragmatic, its probably better to work *... 
My experience adding subwoofers to 2 channel
@mijostyn I've heard the direct drive version- that speaker never seemed to bring home the bacon the way the one did that was easily driven by the M-60s (which replaced an ARC Classic 60; this was a good 15 years ago). I wish I knew which model th... 
What is the best solid state amplifier you have ever heard?
Nelson Pass kit - based on SITs, which have linearity and soft clipping similar to triodes. Makes about 25 watts.  
Pure Class A amps above 100 Watts?
Atma-Sphere MA-1, 140 watts/8 ohms. Its class A2, a class of operation not available to solid state. You can probably find one used in that price range.  
Frequency response + or - 1 dB ??
Sorry to have to disagree Atmasphere. I was hoping it might be folks with your technical acumen that might provide real insight | Well as you saw, Duke did it- so it can be done and isn't that crazy difficult. Just turns out that isn't how you wa... 
Is it possible to have vinyl nearly noise free?
Atmasphere,I’ve  recently experienced a dramatic reduction of ticks and pops after modifying my system with the acquisition of new speakers (GoldenEar Triton 1’s) and a new amplifier (Benchmark AHB2.)My preamp has been the same for over 20 years ... 
ZYX Optimum phono cartridge - a defining statement
My Universe failed due to a crack that made its way from the front of the cantilever back the stylus. When the crack arrived at the stylus, it simply let go. The cantilever was otherwise undamaged.This was shown to me in a photo taken by the manuf... 
Low Sensitivity Speakers Compression Issue.
I get great imaging and depth out of my horns- as good as any ESLs or conventional box speakers. They mimic the recording. But I get why so many have poor results with horns. Older horns are not designed to work with amps of lower output impedance... 
My experience adding subwoofers to 2 channel
I wouldn’t even consider a tube amp to power subs due to their generally low damping factors and their resulting poor ability to firmly control the movement of dynamic cone drivers, especially the precise starting and stopping required of large...