kijanki
Responses from kijanki
| Success Rolling Opamps in EE Minimax DAC Mrtennis - OPA1612 (variation of OPA211) is what you looking for (was too warm and bassy for me) but it comes only in SMT (SO8). There are adapters and soldering of SO8 is quite easy.National Semi amps like LM49720 or one I used LM49860 are more d... | |
| High-end amplifier clarification? I suspect that all amplifiers here:http://www.higherfi.com/amplist/amplist.htm might be high end. | |
| Success Rolling Opamps in EE Minimax DAC Be careful with ESR. If we talking DAC then we have most likely volatge regulators. Many voltage regulators don't tolerate low ESR very well. They tend to oscillate when ESR is too low or too high. Also supply current is more even going mostly to ... | |
| Bass and Treble Dials Unsound,Thanks, I haven't seen it before. Looks very interesting.Timlub,You're right - it is Mylar (I checked Wikipedia). Must be different construction or something else. Hey, if it works it works. | |
| Bass and Treble Dials Unsound,That would be really interesting to insert such device in a chain spdif-in spidif-out but I would still stay out of correcting. Timlub,It looks like you know your caps. Outstanding Mylars? - no way (Dielectric Constant = 3). It is probably... | |
| Bass and Treble Dials Timlub,Capacitors used in analog tone controls have tolerance of few percent producing different phase shifts between channels. Same goes for limited track to track matching of the tone potentiometer. Capacitors, in addition, have dielectric absor... | |
| Premature wear from power-cycling? I don't think so. It might wear tubes or switches but is safe for semiconductors and caps. Electrolytic caps will get momentary temperature increase because of large current going thru internal resistance (life of electrolityc cap cuts in half for... | |
| Bass and Treble Dials "Rooms need tone controls"Room treatments improve clarity and imaging. Tone controls destroy clarity and imaging. | |
| What is “warmth” and how do you get it? Learsfool - jitter is a form of modulation. It creates in frequency domain sidebands of very low amplitude - still quite audible since not harmonically related to fundamental. This amplitude (order of <-70dB) is proportional to level of fundame... | |
| What is “warmth” and how do you get it? "I am unaware of any naturally occuring 'harmonics' in an electrical signal. Only distortion of what ever type."Harmonic distortion measurement is done by feeding pure fundamental with no overtones (sinewave) and subtracting the same fundamental f... | |
| Bass and Treble Dials Sputniks, Adjusting treble and bass can do more harm than good since nature of recording deficiency (if any) is more complex than just treble and bass. It shows in market demand - no tone controls in most high end systems but tone controls in ever... | |
| Oh how I wish Class D amps ... "Audiofeil, you know how low ICE impedance runs"It is 10k - just a little low but many class D manufacturers use additional input circuit that increases impedance. My Rowland Icepower uses THAT1200 instrumentation amp to obtain 40k input impedance... | |
| Success Rolling Opamps in EE Minimax DAC I finally replaced opamps in Benchmark DAC1 with OPA1612 and after initial brighter performance sounded a little mushy. There was a LOT of energy (slam) in the bass and extra extension but midrange became muddy. Today I replaced them again with LM... | |
| OPA 1611 / OPA1612 any Impressions Tubey, better late than never - I just replaced all NE5532 amps in Benchmark DAC1 with OPA1612 and play it so far for few hours. NE5532 is a very good amplifier especially for the price ($0.5). OPA1612 is fuller sounding - especially lower midrang... | |
| Oh how I wish Class D amps ... Dob, I'm confused. I thought that warmth of tubes IS euphonic coloration since tubes enhance even harmonics (artificially added warmth).What is "absolutely artificial origin" and why it is attributed to class D only. Why details are supposedly los... |