kijanki
Responses from kijanki
| power cords with active shielding Jim, speaker cables are antennas for the electrical noise since amplifier has low output impedance only for low frequency signals. Induced noise enters amps input thru the feedback loop. As for the ferrite - on one hand you need highest permeabi... | |
| power cords with active shielding James1969, It is possible. I had for few days CB like transmission loud voice coming thru pretty much everything at home - TV (turned off in stanby), speakerphone, radio. I noticed every time the same unmarked car with many antennas passing by.... | |
| power cords with active shielding James1969, Yes, twisting signal wires will reduce it - if it is coming as common mode. In the case of power cord your signal wires are hot and neutral (return). Pitch of the twist should be many times smaller than wavelength (17" for 700MHz) Twi... | |
| power cords with active shielding Power cable hot and neutral conductors are carrying the same current in opposite directions being, in a sense, "balanced". Twisting them will make them exposed to external fields evenly causing cancellation. Same goes for radiated field from the c... | |
| Bridge Rectifier for the heater 300b tube amp Using heftier diodes (and the bridge), as George suggested, is always a good thing. The problem with rectifiers is that at the peak of the voltage they should stop conducting (being suddenly polarized in opposite direction), but in reality curren... | |
| Musings on Switching Power Supplies (LPS for Oppo / DirecTV/ Radiance) It all depends on how SMPS is designed. They got bad rap from crude computer applications, but can be extremely quiet and are line and load regulated. Many manufacturers use SMPS for the reason of lower noise. Benchmark got 10dB S/N improvemen... | |
| No-one talks about Rowlands anymore Rowland is going down for 30 years. Perhaps Jeff Rowland doesn't know about it and keeps releasing new products? Might be good idea to call him and let him know :)There was a lot of discussion about Rowland gear on Audiogon. Just search Audiog... | |
| AES/EBU cable length; CD to DAC- 1.5 m or very short? Short cable allows to avoid reflections. The common rule is to use cable that has propagation time shorter than 1/8 of transition time one way, making it about 2ft for 25ns transition time (assuming 5ns/m propagation time). I would not go more tha... | |
| External DAC Benchmark DAC 3 is excellent - exceptional measured performance.Fantastic sound and build quality - just got it (DAC3 HGC). | |
| Obscure brands worth considering Sooner or later? I prefer later. When company has only three dealers for whole US and doesn't advertise at all the outcome is almost guaranteed in spite of fantastic product. There are many established companies to choose, that exist for many d... | |
| Obscure brands worth considering I'm not sure I would buy from "obscure" company again. Hyperion Sound, I bought speakers from, went bankrupt (very poor marketing) and now I cannot replace drivers or Xover if necessary. Drivers are "exotic" to make it worse. | |
| Test Equipment vs The Ear Often measurements are inversely proportional to sound quality. Great measurements can be achieved by usage of deep negative feedback, that will introduce unpleasant TIM distortions, that we don't even measure. TIM distortions were unknown until... | |
| Problem connecting Rega Dac to Macbook 2008 My Mac Mini S/Pdif is IN/OUT. Below copied from "About This Mac":S/PDIF Optical Digital Audio Output:Connection: Combination OutputS/PDIF Optical Digital Audio Input: Connection: Combination Input | |
| Not Enough Options for Auditioning Speakers I bought Hyperion HPS-938 speakers without audition (3 month old dealer demo) based on glowing reviews. Hyperion showed them only once in 2004, did not advertise and had very poor dealership base. Closest dealer to Chicago was in Pennsylvania. ... | |
| Problem connecting Rega Dac to Macbook 2008 Your Macbook might not have Toslink out (Macbook Air 2008 doesn't). You can verify by checking "About this Mac" and then "Audio". If it doesn't show S/Pdif there then you don't have it. You could use USB but it will be limited to 16-bit and 48... |