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atmasphere

Responses from atmasphere

I need some techy help in order a preamp--resistor values.
I've used passives and a slew of actives for 40+ years. Each has a sound. Each interacts with cables and associated electronics. There is no free lunch.SMD resistors have lower inductance and thus have a different sound than leaded parts. Howe... 
power amp/pre amp input and output impedence question
The rule of thumb is the input impedance should be at least 10 times the output impedance!'Input impedance' referring to the amp, 'output impedance' referring to the preamp.  
High value, giant killer speakers?
Audiokinesis (Duke) has made giant killers for a long time.His Dreammakers are better than many speakers that cost 3 times more. They are also easy to drive which always helps keep amplifier distortion down. Very neutral, nice extension, excellent... 
I need some techy help in order a preamp--resistor values.
OK I'm not a fan of passive controls- so often I've seen them reduce bass impact and dynamic quality while otherwise seeming to be 'neutral'.But having been in the industry for over 4 decades I can tell you that expensive resistors are expensive :... 
What Class D amps will drive a 2 ohm load
Of course you can take my word for anything I say I hear.  Also, because I am not in the business I tell things like it is without concern for politics.  I didn't doubt you :)This thread should have been finished after the 5th post. I think your... 
Help chose : Hafler 110 preamp or Carver C2 preamp ??
Why these two preamps? Are there none others in the area? 
Warm Class D for horns?
I'm panning to build a 3 way loudspeakers, radial horn, super horn tweeter, and woofer, at first I was considering just use Class D for the 12" woofer, but what about Class D amp for the horns and super tweeter, anyone using?efficient speakers ... 
Tube amp mono block recomendations
Any thoughts or experiences with the ANK kits. The 300b mono blocks can be had in my price range including the C core Interstage models.A single 300b is only good for about 7 watts. Your speakers need considerably more power than that. What are t... 
What Class D amps will drive a 2 ohm load
Stereophiles JA’s summation, "practical use with speakers whose impedance doesn’t drop below 3 ohms."No good at all with the OP’s speakers we are talking about here.245W into 8 ohms315Wpc into 4 ohms when I tried to measure the clipping power into... 
Tube amp mono block recomendations
Our M-60s work very nicely with the Audio Notes. IME it is helpful to give them a bit of power- while they are easy to drive and a benign impedance for tube amps, I would characterize their efficiency as 'moderate'; about 90 or so dB. So in most r... 
Tube amp forethought
Uh, is it just me? I don't see anything in particular about the ESL57 in the OP- just Quads.So ESL63s or any later model like the 989 could be in the mix. My experience with the Quads has been that you really have to watch it with the ESL57 becaus... 
Good amp pairing for Zu Dirty Weekend?
All the ZUs I've seen are pretty tube-friendly. Anything 15-60 watts will do nicely. 
Would switching amps make a big difference?
Of the list above I would do the Sachs or deHavilland. The Backert Labs is an excellent preamp; IIRC it employs an output transformer. Since your amp is single-ended input I don't see an advantage with that. I also have a preference for 6SN7s as a... 
Warm Class D for horns?
Let's talk about this, would like to know more how Class D evolved over the years and who are the manufacturers that are on the vanguard fo design of this amplification topology...Oh.. Class D analog, Class D digital... never found a consensus, ... 
sansui 2000a 35 wpc 8ohms and kef c80 4ohm
I'd be careful! That series (which IIRC includes the 5000) didn't have the most stable output sections. The 2000 held together better than the 5000 though- I saw a lot less of the 2000s than the bigger units when I serviced this sort of thing for ...