atmasphere
Responses from atmasphere
| Bridged amp with electrostatics.. The nature of ESLs is such that they have an impedance curve that decreases as frequency increases, causing a transistor amp to make more power in the highs. So you do want to be careful! | |
| Bridged amp with electrostatics.. You can run the speakers with the normal AC ground connection. The concern with most bridged amplifiers is that neither speaker terminal is at ground, so if you connect into a setup that does have one terminal grounded, a potential (pun intended :... | |
| Bridged amp with electrostatics.. Actually the 'bridge' issues is similar for transistor amps. With *any* bridged amp, both speaker terminals should be kept from ground.BTW, ESLs in general are best driven by tubes. If you plan to do it with transistors, you will need a much large... | |
| Bridged amp with electrostatics.. So are you looking for an amplifier that is based on a bridge circuit then?Atma-Sphere, BAT, Einstein, Joule Electra are a few that come to mind. | |
| Has anyone upgraded their preamp with V-caps? We've been using the V-Cap as an option for about the last year or year and a half. The Teflon part is one of the best coupling caps out there with no reservations. If you don't like what you hear with this cap its because it is revealing a weakne... | |
| I have Maggie MG 1.6's - need amp advice No Doubt!! Clipping any large amp will eat tweeters pretty fast.Although tube amps do have more THD in general, the idea is to generate less of the distortions the ear *objects* to, and tubes are quite good at that. This goes back to that 'tube po... | |
| What's the frequency response of vinyl? If any of you guys were alive in the 1970s :) remember the CD-4 system that RCA used for 4 channel? The LPs were cut as 2 channel records, but had the rear channels imposed on a 42KHz FM carrier that was *also* cut on the record. And this was with... | |
| I have Maggie MG 1.6's - need amp advice Eldartford, this commentMost solid state amps are power-limited by current. Tube amps, whose power supplies run at several hundred volts, may hit an output voltage ceiling, resulting in a flat top on a sinusoidal signal called (for obvious reasons... | |
| Truely Balanced Pre Amps The advantage is lower noise and lower distortion, to the point that less gain stages can be employed. There is less than double the parts so the cost ought to be less than double too. And yes, there is a fully differential way to do this. | |
| Truely Balanced Pre Amps A 'fully balanced' preamp will not have the signal appear anywhere in the circuit in single-ended mode, except at an input. So all the switching, the volume control, EQ is all in the balanced domain. So how many drop out when this rule is applied? | |
| What are the trade offs? PUSH PULL vs. pure SET Hi Groovey, thanks for the link. In general Eddy is on the money. He does leave out some details that *I* think are important- namely OTL amplifiers. Take away the output transformer and you remove most of the arguments for SE. So it then becomes ... | |
| What are the trade offs? PUSH PULL vs. pure SET Yes, the triode operation of an amplifier that has tetrode or pentodes is compromised. Such tubes in triode mode are not as linear as real triodes.In triode mode, a push-pull amp still differs from a triode amplifier that is single-ended. Push-pul... | |
| I have Maggie MG 1.6's - need amp advice Dear Atmasphere,Could you write a word or two about what you mean by "The trick with any tube amp is an effective 3-4 ohm capability...". Thanks.Let's put it this way- tube amps in general do not perform as well on 4 ohms as they do on 8 or 16. Ou... | |
| Einstein OTL amps experience Hi Doc, what kind of MA-1 Mk.IIIs do you have? | |
| I have Maggie MG 1.6's - need amp advice Maggies are easy to drive up to the 'knee' of their magnet system which is not push-pull (MG 20.1s are an exception and are easy to drive at any volume). Getting additional volume above the knee requires a lot of power as the speaker dynamically c... |