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atmasphere

Responses from atmasphere

The 'tube-transistor' enigma by MC carts?
Nandric, my understanding is that the bobbin in the Orpheus is round, like the bobbin in a voice coil of a speaker. It is not cross-shaped like the Micro Benz use. 
Coral Beta 8s or Devore Super 8s
I have a set of Coral Beta 8s that I play with a pair of 45-based push-pull power amps that I built for fun. I have also played the speakers with our S-30. They are fast and revealing but I would not call them bright by any means- with the right g... 
Most agreed upon best speaker?
Lrsky, the field-coil powered Classic Audio Loudspeakers will do the same imaging and detail as the Sound Labs, without horn artifact. The speaker is 98 db and goes from 20Hz to 35KHz. If you search this website look for comments on the speaker fr... 
If you were a tube preamplifier manufacturer
Hi Mr. Tennis, The 12AU7 does not have a lot of gain. If you are making a low output MC phono preamp, its not the best choice. I find the sound of 12AT7s to be better than that of the 12AX7 because you can get bandwidth, but we don't use negative ... 
Phono cables
Philb7777, phono cartridges are a balanced source. Unless you have an air bearing arm, connecting the tone arm to a phono stage with a balanced input is a matter of the interconnect cable and not anything else.The balanced phono connection we deve... 
The 'tube-transistor' enigma by MC carts?
Nandric, I understand that the Transfiguration Orpheus uses a different MC mechanism than the two described above. 
If you were a tube preamplifier manufacturer
Mrtennis, correct. I personally don't use the 12AX7 because you can't get much bandwidth (the 12AX7 trades off bandwidth for gain), which is essential to getting phase relationships right. So if I need high gain, I use the 12AT7; you can easily ge... 
ampllifier design
Hi Jimjoyce25- bingo! We got great linearity out of them, but they would often ring like a bell. Handpicking them got the microphonics down, but never to the point that you can get with a 12A* series tube or 6SN7. I'd always been a fan of the 6CG7... 
Transient Attack and Amp Design
Hi Steve, I think there is plenty of evidence out there to support your position regarding smaller caps! 
Reel to Reel
The old Ampex stuff is built to run for years 24/7. Properly refurbished, the old Ampex transports will last indefinitely if owned and operated by an audiophile. 
If you were a tube preamplifier manufacturer
As a manufacturer, you have to consider the lifespan of the product itself. Any decently built amp or preamp is going to last at least 20 years. At the end of that time, where are you going to find the tubes? One thing is certain- if you built the... 
ampllifier design
The 6DJ8/6922 family of tubes, which includes the Russian 6H30 extension, are not designed for audio, and while quite linear, tend to have a microphonic signature that is considerably more pronounced than in other tubes designed for audio, like th... 
Transient Attack and Amp Design
Saki70, the difference between 8 and 4 ohms can be all that it takes; nearly every amplifier made will sound faster (as well as less bright, more natural) on a speaker of higher impedance. 
Please suggest good balanced Preamp
Tvad is absolutely correct without reservation. 
Power Amps with High Current or High Damping
Whatever is going on here, damping factor (which is over-rated) has little to do with it. The speaker has a moderate impedance without a lot of phase shift- a tube amplifier as commented in the reviews can work with it just fine. In fact you don't...