atmasphere

Responses from atmasphere

Need help on the TRL DUDE
We serviced out a Dude a few years ago. I don't recall the problem, but it does not seem challenging to sort something like that out. Any transformer that can deliver the current you need should do the job. I'd be very surprised to find out that t... 
What's more important in a difficult room, room correction or higher, clean, power?
I'm not a fan of room correction. The reason is most often what is going on is a standing wave which no amount of correction will fix. You can kill a standing wave by using a distributed bass array. The best example of this is the Swarm made by Au... 
turntable hum
You'll have to add one. One common problem with Regas is the motor isn't grounded and radiates hum to certain kinds of cartridges such as Grados.But when the motor is grounded (as well as the tone arm) then there is no hum. Grounding the motor is ... 
Transformer coupled vs Capacitor coupled?
The problem with transformers is bandwidth. Usually in a preamp level situation their bandwidth can be fairly wide, but to prevent phase shift in the audio band the bandwidth of the preamplifier circuit has to be from 2Hz to 200KHz and even in sma... 
What Class D amps will drive a 2 ohm load
OK, so what is the definition of instability for these Class-D amplifiers?Stability is the same definition regardless of the kind of amplifier. It is the ability of the amplifier to resist oscillation.Oscillation has nothing to do with whether an ... 
Up to date list of GaN Class D Amplifiers?
Anyone heard one?Is it really a game changer?Is GaN likely to reach the mass market?Yes, maybe and yes.GaNFETs are pretty cheap nowadays so anyone can design a circuit using them inexpensively. But MOSFETs aren't out of the game yet; some of the n... 
300B SET or EL34 SET
I tought my Tannoy Legacy Eaton at 89dB sensivity would be too hard for the 300B amp to drive @simna  And you were correct. In reality a Push-Pull EL-34 based amp will be barely enough power in most rooms if this efficiency is correct!SETs are sim... 
What Class D amps will drive a 2 ohm load
'Stability' is that which prevents the amp from oscillating. Just so you know. So in the phrase:As I said above, so is an 80’s NAD3020, stability is needed,- the term is being misused. In fact its unclear what is meant here. Are you saying that th... 
Congratulations Atmasphere!
I could not be happier (perhaps ignorance is bliss) with my M-60s.  I'd be at a loss to imagine how they could be improved upon with respect to sound.   Not saying the M-60s are the worlds best sounding amps, just saying that my 3.3s with the c... 
new GAN amplifier
Thorsten Loesch All Class D amplifiers are essentially delta-sigma DAC’s.This statement is false. 
What Class D amps will drive a 2 ohm load
I don't know what a Class D amp sounds like when clipping.That depends very much on how the amp is designed. Some soft clip and some don't- some 'snap' when they clip. You really don't want to do that with a powerful amp- the tweeters are at risk! 
Congratulations Atmasphere!
@mijostyn No, its nothing like that.  
Congratulations Atmasphere!
So, If I understand what Al has written, Ralph has created a symmetrical bridged class D tube amplifier.... Of course, I’m guessing, but I’d love to hear more. @timlub The tube part isn’t right, but otherwise, yes. Essentially the invention is a C... 
What Class D amps will drive a 2 ohm load
For a ten foot run I suspect that difference in gauge may well be audible with a low impedance load like that.With respect to interconnects- hard to say. The differences I've heard in interconnects are unrelated to brightness caused by increased d... 
Stereo tube amplifier recommendation with Bricasti M12 and Devore O/96
From customer feedback we've gotten, the speaker is not as efficient as you might expect- that is why I recommend the higher power of 50-60 watts. If you are in a smaller room you can get by with less power, but if using an SET and really showing ...