atmasphere

Responses from atmasphere

really? .89c ground lifters?
The way it is done in pro-audio situations is to make sure the heart of the system (in a pro audio system: the mixer, in a home system: the preamp) is the only thing that is grounded. Otherwise there is a good likelihood of a ground loop between t... 
SET Preamps
If you want my opinion I really feel that if you do fully differential in the preamp, there is a huge benefit there also, IOW even though there are many very musical single-ended tube preamps, they *can* be improved upon. 
Woofers Gone Wild
Actusreus, what kind of speakers do you have? One area where there is not much you can do is if you have smaller woofers in a smaller cabinet. Once you get out-of-band there is nothing keeping the woofers from flopping around. In a case like this ... 
Power output of tube amps compared to solid states
I think they do. It would be really tricky to build a zero-feedback transistor preamp. With tubes you can do three stages of gain between the LOMC phono input and the line out, I doubt that the same can be said of transistors, at least, I've not s... 
Power output of tube amps compared to solid states
In the last 20 years the use of SETs has really increased a lot. It has resulted in a lot of speakers that were simply not available 20 years ago. So these days its ten times easier to find a speaker that works with 'current source' amplifiers tha... 
Woofers Gone Wild
Actusreus, I guess I would really challenge whether or not that cartridge and arm combo is really correct. I'm a big fan of Occam's Razor, so I'm always looking for the simplest explanation. So when I hear that, the simplest explanation to me is t... 
Power output of tube amps compared to solid states
Unsound, I think the 'harm' comes in when the speaker requires that the amp use a lot of feedback to work right with the speaker. Since our ears use the 5th, 7th and 9th harmonics as a means to perceive sound pressure, and since negative feedback ... 
Woofers Gone Wild
Bob, Yes, I don't need a filter- the electronics are flat to 2 Hz from the phono input and the speakers begin to roll at about 23 Hz and are 3 db down at 20Hz.Anytime you have a cutoff frequency, such as one introduced by a filter, phase anomalies... 
more adjectives to help define 'fatigue' vectors?
In addition to Duke's comments, fatigue can be caused by the presence of odd-ordered harmonics in the amplified signal. Our ears use the odd orders (5th, 7th and 9th) as a means to determine the loudness (sound pressure) of a sound. If these harmo... 
Power output of tube amps compared to solid states
Kirkus, Shadorne, and Unsound, I really appreciate your input over the years. Inside of what I call the Voltage Paradigm, yours can usually be counted on to be accurate comments, and always done with decorum :)I want to point you to Duke's comment... 
Woofers Gone Wild
Ported. 
End of Snell Acoustics?
I had a set for a long time and they worked great- the setup was easy and I found that tubes drove them quite well. I know of a set for sale that is part of an estate. Seems to me they only want about $1200 for the pair. Contact me if interested a... 
Woofers Gone Wild
Actusreus, I'll put it to you this way- the phono preamp I use is good to 2Hz and the amp is good to 1 Hz. I have 2 15" woofers in each channel, and they go to 20Hz. They really don't move much unless there is a bass drum whack or the like. The tr... 
rogue, ear, or other amp for quad 57
Tompoodie, if you have '57s, M-60s do not need any external devices like the Z-Music or the ZEROs. 
Power output of tube amps compared to solid states
Pubul57, Kirkus has been right on all his points but one- I've not really talked a lot about the DC coupling issue, even though I am a proponent of OTLs (the two are not always the same thing).In a nutshell though, I think true DC coupling from in...