atmasphere
Responses from atmasphere
| SET pre-amplification? Jayb77 have you tried using a 45 or a type 10? They make less power, so you can get greater bandwidth out of the OPT (and you don't really need the power). Plus the 45 is supposed to have it all over the 2A3 (although I suspect that most of that h... | |
| I have the dreaded hum Well, you've already tried other phono/arm cables. And they work with your outboard. So the problem is in the preamp, whether the dealer thinks so or not. | |
| I have the dreaded hum So the phono preamp is a stand-alone and is OK.I'm just trying to be clear here. And the 'preamp' is full function and has a LOMC input? If nothing is connected to the inputs of that preamp, does it still hum when its in the MC position? Its OK in... | |
| "Light Loading" Amps - Music Refence and others... Al, that's what I get for relying on my memory for something like that. | |
| Telefunken 6AS7 There were actually Telefunken 6AS7Gs. They are quite rare. If I recall right, they have brownish bases. OTOH, there *are* generic Russian tubes *marked* as Telefunkens!! So you have to watch it, and IMO you will not see any huge improvement with ... | |
| I have the dreaded hum If you have a ground loop it will be in both channels. This is usually caused by poor AC ground design. Since one channel is OK, that's not likely it. Based on what I have seen so far in this thread, the problem is somewhere in the phono section i... | |
| High-end amplifier clarification? Weseixas, We did a few Stereophile shows but none of them were in '94. There may have been someone there using one of our amps though.These days at home I use a speaker that is 16 ohms and goes to 20Hz. It uses field coil drivers with beryllium do... | |
| Explain Amp classes & how effects sound? In terms of heat:class A => hottest but otherwise the most linear/lowest distortion class A2 (tubes only) grid current may flow in the tubes during part of the waveform but the tube is conducting through the entire wave cycle. This allows for m... | |
| "Light Loading" Amps - Music Refence and others... Seems to me Scott made an EL-84-based amp that made 25 watts. It too was class AB1. To get 35 watts though would require one to jump through a lot of hoops design-wise (most EL-84 designs don't make more than 17-20 watts, but a good portion of tho... | |
| "Light Loading" Amps - Music Refence and others... I suspect that Roger has a really robust driver circuit in the RM-10. IOW, its probably a class AB2 circuit.Depending on the way the transformer is spec'ed out, I could see a loss of 50% or a loss of 20% of power if you 'light load' the amp. We bu... | |
| High-end amplifier clarification? Weseixas, some of the best speakers I have heard are much more than 4 ohms. Just so you know, our amps can do a 20 Hz square wave with no measurable square wave tilt, which will not be the case with an amplifier that cuts off at 10Hz.The point of ... | |
| Phono stages anecdotes. What would be considered a trend setter? I suppose maybe our MP-1 was, as it was the first phono section (1989) with a balanced input, and pretty well defined how balanced was done with phono. | |
| Zu Soul Superfly One thing is sure- you won't have any troubles getting a set of ZUs to rock. Totems on the other hand- all the ones I have heard have needed a lot of power to get going, but once they did have that power, they did quite well. Overall though the ZU... | |
| How many tube watts for Vandersteen 2's? Pubul57, the act of increasing the bias on the tubes has the effect of reducing their output impedance. This will change the relationship they have to the output transformer.In addition, you have to also consider how the amplifier was designed. Fo... | |
| High-end amplifier clarification? Sound is very subjective, one man's euphoria is another' anathema. An amplifiers job is that of an voltage source, expensive high end amplifiers that cannot replicate such, is well ................A Pretender.Weseixas, so you exclude Nelson Pass??... |