atmasphere

Responses from atmasphere

which tube mono blocks?
Darkmoebius, just for the record, I stated that about **all** amplifiers, tube *or* transistor!To restate: If your goal is sound quality, your investment in your amplifier will be best served by a higher impedance speaker (8 or preferably 16 ohm),... 
Ortofon Per Windfeld Load Impedance?
First, my apologies for this thread going OT...Zieman, perhaps a discussion of cables is appropriate here.Cables have what is known as 'characteristic impedance'. This value is an impedance such that when the cable is terminated with this impedanc... 
Speakers and Tube Amps
Duke said it better than I can. FWIW Wilson has shown with Audio Research a good deal in the past and ARC has Wilson speakers in house. So despite the dips in impedance, Wilson's are 'tube friendly'.The Wilson Watt has long been an example of the ... 
Ortofon Per Windfeld Load Impedance?
Zieman, since our preamp is balanced we tried exactly that, since the cartridge is a low impedance source. The result- no difference. Single-ended; hard to say what you might hear since single-ended cables tend to be more susceptible to coloration... 
Ortofon Per Windfeld Load Impedance?
FWIW when you have a loading resistance of only 100 ohms, the capacitance of the cable can be neglected. To illustrate this point, even if your capacitance was as high as 0.001uf, the frequencies affected would be measured in MHz.There **might** b... 
SRA Isolation Platform under a Turntable
An SRA base under your turntable will likely be an instantly audible improvement! 
Speakers and Tube Amps
The idea that an amplifier has to double power as the impedance is halved is problematic. I say this because **in general** tubes sound better than transistors and tubes do not double their power. Instead, they will (or they will attempt) to put o... 
Ground Loop Issue 427
Hi Spencer, your DVM can measure Ohms. Just put it on the Ohms scale; the reading you are looking for between the RCA grounds and the chassis ground should be the same as connecting the probes of the meter together.Most SETs have less gain than am... 
Ground Loop Issue 427
Hi Spencer, I'm in the camp of 'you have an RF problem'. I think, based on reading all of the above, that you have more RF susceptibility with with this amp, and that the long cables are somehow able to contribute where the other amps were not so ... 
What makes for a GOOD turntable.
Here is a list of things to look for:1) a robust drive (apparently, can be idler, belt or direct, if done right).2) absolutely *no* bearing play (slop) or flexibility between the platter and the cantilever of the cartridge3) in support of #2, the ... 
Life without a remote
For years (until we got our remote system running) I kept the preamp 3 feet from my listening chair. I still do- the interconnects are 30 feet long, but the preamp can drive 100 feet no problem. So I put the preamp where I wanted, unfettered by an... 
My head hurts....
I had the pleasure of working with the Stahltek DAC at the RMAF. It accepts 16/24 bits from MP-3 all the way up to 192KHz. So we were running a lot of 24 bit 192KHz files off of a server, which worked quite well. I'm a big analog freak, but I had ... 
Do all Passive preamps exhibit this trait
Mingles, sure sounds like your experience is similar to mine, but keep in mind also the caveat 'properly designed' which I am careful to use. IMO, most of the active line stage technology you see today seriously trails behind amplifier and phono p... 
Do all Passive preamps exhibit this trait
Hi Clio09, with TVCs its a different game and in that context I agree with you. My comments apply only to passive volume controls that are transformerless.A properly designed TVC can, IMO, do better than the best PVCs; in fact I think that unless ... 
Do all Passive preamps exhibit this trait
Contrary to Clio's advice, if you want to get the most out of a passive your best bet is to match the amp and source for input and output. IOW, the source output should be just barely able to drive the amp to full output.This will mean that the pa...