atmasphere
Responses from atmasphere
| ARC Ref 3 Main Output Impedance Question Hifigeek1, we've built tube buffer versions of our preamp. They have a direct-coupled output. IME what you run into with tube buffers is voltage loss that is more noticeable than with semiconductors. As long as your sources have enough voltage tha... | |
| OTL Tube Amp for Maggie 3.6? Audioquest4life, there is nothing about 6K- but he did say something about trying to keep it under 6 *figures* :) | |
| What does one purchase after owning horns? Mapman, I've been involved with some field-coil driver design exercises in the last few years. It is true that you get greater efficiency with field coils, but if so it will only be by 1 or 2 db. The main thing that governs efficiency is precision... | |
| who makes auto biasing tube amps w/200 wpc the Atma-Sphere MA-2 is autobias. | |
| ARC Ref 3 Main Output Impedance Question Normally if you have a balanced circuit, 20K should be no problem. Balanced circuits **should** be able to drive 600 ohms- so 20K should be like a walk in the park. But many high end audio products don't support the balanced standard, and ARC is o... | |
| An analog question for those who record Davidnboone, if you are doing cassette you will have to find a machine and get it refurbished. Pioneer made some very interesting high-end machines that used Dolby S about 20 years ago- very nice sound, very quiet. Otherwise a Nakamichi is the thi... | |
| Anyone read TAS's Ten Most Significant Amps? Isn't the H/K Citation 2 on that list? I would not regard that as an old-timer's issue- that amplifier *is* pretty significant- it has wide bandwidth, low distortion and decent power (for the day), and if properly refurbished keeps up with modern ... | |
| What does one purchase after owning horns? Chadeffect, it does appear the newer Trio has a higher impedance. Their website does not have a lot of technical data, but it seems pretty sure that 3 of the 4 passive crossover components must be caps. If a choke is added to the bass horn, the ov... | |
| What does one purchase after owning horns? T_bone, In the case of Avantgardes, all you have to do is look at what sort of amplifier the designer is using (that is the case with most speakers). He uses a low power transistor amplifier, which explains the 'crossover' of the Trio (its all cap... | |
| What does one purchase after owning horns? Mrdecibel, I suppose this all could be boiled down to damping characteristics. How you would have to view it is like this: 1) some speakers like lots of damping and others don't.2) Some amps have lots of damping and others don't.3) Don't mix the t... | |
| What does one purchase after owning horns? I have dropped this link many times:[ur]http://www.atma-sphere.com/papers/paradigm_paper2.html[/url]It has to do with two different design, test and measurement techniques, both of which are alive and well in high end audio. Weseixas subscribes to... | |
| Phono Preamp-Nothing you like so Build your own? Heyraz, if you are doing DIY I think you will find you can do a lot better than designing around an opamp. Have you looked at http://www.diyaudio.com?Food for thought: if you set up a zero feedback circuit, even though it has the same bandwidth as... | |
| OTL Tube Amp for Maggie 3.6? There are two ways to make an OTL work with 4 ohms really efficiently.The first is to make it so big that 4 ohms is no worries (our MA-2 and MA-3 are examples of that- the MA-2 makes its maximum power into 5 ohms and the MA-3 makes its maximum pow... | |
| Can I swap a Stepped Attenuator for a Potentiomer? Switches make a difference in performance. The reason is that not all contacts are created equal- the best will be doubled up to increase contact pressure and area. So yes, the input switches can make a difference.If you are really considering doi... | |
| Best tube mono blocks under $15,000? Just FWIW, based on the impedance curve I have seen of this speaker, the MA-1 should do just fine on it- although it may be a good idea to use a zobel network centered at about 1 KHz.Alternatively a set of ZEROs could be employed. |