atmasphere

Responses from atmasphere

Why Do We Use Preamps?
A preamp serves five functions:control volumeselect inputsprovide any needed gainbuffer volume control from output cableand the least understood (but nevertheless very real):control the interconnect cable, i.e. prevent the cable from having an eff... 
Tubes vs. solid state.
Minorl, of course there are electric cars too, and energy storage systems that are a lot better than the internal combustion guys would have you believe.There have been improvements in amps in the last 50 years. There are new topologies that did n... 
which is better ? MC phono stage or MM+step-up ?
If you have a low output cartridge, the phono cable will need a good 200 hours. Its best if you don't disturb it! 
Can someone give me an explaination re: power amp.
Kijanki, some tube amps will make higher distortion at very low power levels just like transistors. Others (SETs for example) the distortion becomes unmeasurable.Feedback is appearing more and more to be a poor means of ridding audio circuits of d... 
Tubes vs. solid state.
Minorl, sounds to me as if you are saying something that I've been harping on a lot- that the playback system has to take into account the rules of human hearing/perception and obey those rules. Designing to specs on a piece of paper doesn't do it... 
Tubes vs. solid state.
Paulfolbrecht, yes, General Electric proved that humans use the 5th 7th and 9th harmonics as a means to determine the volume of a sound back in the mid-60s.So how this relates to the TvsSS debate: The issue centers around feedback- by adding feedb... 
Tube preamp output impedance at low frequencies
Gmuffley, don't worry- as I pointed out, the question is does it matter? If you measure the unit at a low enough frequency you will detect the rise. More to the point is that as long as the maximum cutoff frequency of 2 Hz is observed by the desig... 
Tubes vs. solid state.
Alright- here are some basics:Given an amplifier with a propagation delay (IOW, any amplifier), and a constantly changing waveform (such as a musical signal), the application of loop feedback (negative feedback) creates a 'non-linear dynamic syste... 
Green, Eco Friendly Class A Monoblocks
So far the capacitor storage technology is still 'on the way'. It might be that EEStor is the furthest along. http://theeestory.com/The other players in the US are Maxwell and Intersil, plus there is still a company here in the Twin Cities that ha... 
Tubes vs. solid state.
Anyone here interested in what Chaos Theory has to say about amplification? 
High end tube Preamp under $4k used that competes
Trcnetmsncom, please pardon me if I offer my opinion. There is always a price one pays for being both an audiophile and a manufacturer at the same time. IOW I participate in these forums because I enjoy audio. Foster_9 asked a question that I had ... 
Tube preamp output impedance at low frequencies
The output impedance of a preamp at low frequencies has a close relationship to the size of the coupling capacitor at the output of the preamp. Many tube preamps including the Quicksilver (which has a very low output impedance otherwise) have a ri... 
High end tube Preamp under $4k used that competes
The age should not be a problem. Nor does it run hot. FWIW our MP-3 keeps up with it easily and plays deeper bass on account of its direct-coupled output. You can find them used under $4K, so its an option as well. 
Green, Eco Friendly Class A Monoblocks
Kijanki, if you have been playing with solar power you know that a lot depends on how long you use an electrical item as well as how much power it draws. What solar systems I have seen vary from a single 12V deep cycle batter powered by a single s... 
Wilson Sasha's - All evolution in Wilsons are.....
It really did not sound to me as if there was any problem with our MA-1s amps playing bass on that speaker! So I'm sticking to my story- Wilsons are tube friendly and easy to drive. Like I said- we played some very nice volume levels and the meter...