ar_t
Responses from ar_t
| Searching for power amps with low damping factor. Since when is 200 low? 20 is low. The first Ayre amp had a low damping factor, as it is open loop. The new ones are also open loop, but maybe higher.I know service guys who would stick a resistor in the output of cheap receivers to keep amps from ... | |
| balanced vs unbalanced You can't hear a difference, eh? Maybe it isn't properly implemented. A lot of SS gear is not. They seem like to use the garden variety circuit that comes out of some "cook book", and it leaves much to be desired.The leads on our phono setup is le... | |
| balanced vs unbalanced All things being equal, and assuming that the balanced is properly implemented (a lot of times it isn't!), balanced is the way to go.Depending on the circuit details........some may need jumpers, others will not. | |
| UcD vs TriPath Digital amps. Maybe yours are. They are not a fixed frequency, and the deviation is tens of kHz. If you want to bridge them, you have to tie them together somehow so thay they oscillate at the same frequency.But yes...........44 kHz is one order of magnitude off. | |
| UcD vs TriPath Digital amps. I looked into using the Tripath stuff a few years back, and I was not crazy about it. I have reason to believe that they got the distortion down at the risk of playing games with the dead time. In a manner that might lead to shorted transistors.Th... | |
| StepUp & StepDown Votlage Transformers? A lot of those have internal switches for 120/240. Pretty sure the Rowland does, as most of his work is for export.Transformers are heavy to schlep back and forth. Sending stuff back and forth to the factory is not fun.Check to see which ones are ... | |
| StepUp & StepDown Votlage Transformers? I can only think of two variations on the same technology:Auto-transformers.......primary and secondary share windings."Regular" transformers....primary and secondary use independent windings.Don't advise auto-transformers for what I suspect you h... | |
| Best preamp is no preamp: always true? Not a matter of impedance matching. A matter of drive impedance. | |
| CDP transports when do know they died Swing mechanisms are alledged to have that problem. I think it may be blamed more times than it deserves to be.However, I have opened players that someone oiled the hell out of the platter motor, covering the laser head with oil. I did have one pl... | |
| CDP transports when do know they died "Routine lube and oil" on the platter motor might come flying out, spraying everything when and if it does spin. Use caution. | |
| Is the NAD 3020 the best value of all time? They cost less than $200 back in '80.......so they can't be worth much now. The switches became intermittent with age, and as the caps dried out, they developed instability problems. Part of the reason it sounded good was the voltage gain stage of... | |
| whatz up with tape input/outputs? How would leaving them off make for a "pure sound"?How would you add that feature in later if, and when, you needed it? I see lots of uses for one, as do others here. | |
| Bridging mono amps Bridging mono amps is easy, especially since you have inverting outputs. You would notice a bigger difference if you tried to bridge a stereo amp that shared a power supply. The monos may actually sound a tad worse, as the supply rails will now ha... | |
| Can a simple DIY volume knob replace a pre-amp? What you are refering to is called a "passive preamp", which is nothing more than just a potentiometer, aka volume control, stuck in a box of some sort, with RCAs in and out.I know a lot of guys using them, and they do work well within their limit... | |
| Class D Amp For 'Stats? The UcD based amps do have a slight interaction. Less than ICEpower based amps. I have extensive experience with both.The gang at Hypex is confident that it will handle low-Z loads. Tell the truth, I have never tested them that way. (We only offer... |