atmasphere

Responses from atmasphere

Why 24/7 warm-up period on amps?
Rower30, I do not blame you for taking that position, and no doubt this is why there are a number of 'HiFi' fuse products now available.However you can also consider the fuse to be a common denominator in the AC chain, in that you might use the sa... 
Tube question for the electrical engineers
If you are using Chinese signal tubes the life may be less than 2000 hours if you are using LOMC and need low noise. They can be very quiet but can go downhill in only 1000 hours.Had you considered a step up transformer for the phono section? You ... 
Lifespan of a quality solid state amplifier?
I'm with Cathode on this one. 
Tube question for the electrical engineers
A line disruption should not affect the tubes at all.OTOH, it is normal for signal tubes to start out quiet and slowly built up noise as they age. In the old days there were some tubes that were rated for 10,000 hours but no-one does that today. S... 
Balanced XLR to RCA Adapters: Good or Bad?
My experience is that adpators are not a good idea- they will rob the system of life and impact. So my vote is to change the connectors on the end of the cable.The advantage of running balanced in the phono is (especially if you run LOMC) that the... 
surface noise and cartridge/ phono pre questions
Jonathon, I'm guessing that you've not heard one of our preamps in probably 15 years! Time to hear one again :)I agree that its possible to use feedback without surface noise issues, but- its a lot harder to do. In addition, I have found that univ... 
Current Delivery for Magnepans
IME 100 watts is plenty for the 1.7. Since its a 4 ohm load, that means to make 100 watts the amp has to make 5 amps.That's a far cry from 40 amps... in the case that you mentioned, the 40 amp spec has nothing to do with amplifier power. Instead, ... 
Lifespan of a quality solid state amplifier?
Hi Herman, I too have taught in technical schools and my stint in the service industry goes back to 1974. That's how I financed my way through the Minnesota Institute of Technology. The use of 'half life' is my own and simply comes out of experien... 
Lifespan of a quality solid state amplifier?
English is an evolving language. 'Half life' works really well in this case since you have the statistical issues of a single cap and also that of several.In the case of a single cap its half life is 20 years on average. IOW, you will find that it... 
Building balanced interconnects--ideas
Don't shield the wires separately. You want the twisted pair to have a common shield. 
Lifespan of a quality solid state amplifier?
Herman, that is the correct use of 'half life' in this case. This is what they teach you in technical school. I have seen it borne out many times in the last 40 years. 
Lifespan of a quality solid state amplifier?
Filter capacitors have a half life of about 20 years. What that means is that in a 20 year period, about half of the caps will have failed. This is true of transistor and tube amps.Sometimes when the cap fails the ESR goes up like Kijanki was talk... 
Reel to reel repair - is it worth it?
This machine is certainly worth fixing even if you have to pay $250.00. Once you find out what good tapes sound like $250 will seem really cheap. 
Building balanced interconnects--ideas
FWIW, the whole idea behind balanced line cables was/is to make it so that the cable does not have an artifact- regardless of the cost of the cable.To accomplish this there is actually a standard that has been in place for the last 60 years or so.... 
amp for VMPS - RM/X
VMPS is tube friendly- we used our amps with them at CES the last couple of years. So you have a lot of options.