kijanki
Responses from kijanki
| Is there an average life span for a preamp? Atmasphere, My calculation based on Nichicon data shows that at 35degC (95degF) standard caps should have 80% of capacitance after 17.8 years. Each 10degC cuts life in half, so I would estimate not more than 10 years for caps in hotter amps unless... | |
| Misconnected interconnect XLR is superior in that respect since it cannot get loose, be plugged into output instead of input and cannot be touched since exposed inputs are female with recessed pins.Plugging and unplugging should be done always with everything switched off ... | |
| Are Disc Players Dead? "Apparently lossless digital isn't as perfect as many would lead us to believe"Files can be better than original CD. The reason for that is that CD player cannot read the same sector many times, playing in real time, thus interpolating data when s... | |
| Rookie; replace my own amplifier caps?? Jeff_jones,There is no need to form new capacitors. When capacitors are unpowered for many years electrolyte eats out dielectric (aluminum oxide) lowering breakdown voltage. Such capacitor should be powered at the lower voltage, increasing it slow... | |
| Rookie; replace my own amplifier caps?? I agree with Jallen, that Jeffrey is spot on. I calculated from data provided by Nichicon on large electrolytic caps (I published it in different thread) that standard cap running in 35degC (95degF) has 80% of capacitance after 17.8 years. Long li... | |
| Apple Mac Mini as a music server "I am using a mac mini with a Benchmark DAC 1"Shadorne, how do you feed it? I use Airport Express. | |
| Are Disc Players Dead? Vinyl isn't dead. It just smells funny. | |
| Interconnect Help I'm very happy with Acoustic Zen Absolute 0.5m XLR that I bought used for $600. Foam Teflon, oversize tubes, 7N zero crystal silver (with 1% copper), 6.1pF/ft 20nH/ft - it doesn't get better than that, at least for the price. Very clean, open, dyn... | |
| Is there an average life span for a preamp? AFAIK every preamp is class A. Saving power (class AB) is unimportant in preamps. | |
| Low damping factor but fast& high current SS amps? Negative feedback increases both DF and the bandwidth but it does not mean that high DF = fast amplifier. Amplifier might be slow to start with or have bandwidth intentionally limited at the input.Slew rate might be important but let's see how muc... | |
| Is there an average life span for a preamp? Joe - 12000hrs is nothing. The only perishable things inside (other than mechanical switches) are electrolytic caps. Their life is in order of 50years in room temperature. Every 10deg C temp. increase cuts their life by 2 (they dry-out). Since pre... | |
| Low damping factor but fast& high current SS amps? Liquy - I never said they are related. That wasn't my quote. | |
| Low damping factor but fast& high current SS amps? "How does feedback lower DF"Magfan It increases DF (lowers output impedance).Lets take amplifier that has gain of 30 (31.6dB). When input voltage is 1V output voltage is 30V. Output voltage drops (for whatever reason) 1V under 1A load to 29V. T... | |
| Low damping factor but fast& high current SS amps? Magfan - Deep feedback lowers output impedance (also lowers THD and IMD). Amplifier's configuration affects initial output impedance. Class D amps for instance connect speaker to power supply and GND (zero impedance points) all the time, only pola... | |
| Low damping factor but fast& high current SS amps? "So, I believe that high DF indirectly let's us know that the amp is trending towards high bandwidth (fast) & will be capable of high current delivery (if it's power supply is able & the music signal demands it)."High current demand is at ... |