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kijanki

Responses from kijanki

AM Station coming in through my outlet
"What surprise me is that their transmitter towers are 15 miles away and the station about 30 miles."That you know of - in my case it was small local station (probably few kW) within a mile. 
Who uses what Class 'd' modules?
Sorry for that - my memory is getting worse. Linns amp is Klimax and I thing it's properiatory class D - isn't it? 
Sound through Macbook vs DAC
"I relized that a DAC will increase sound stage, dynamics, and transparency, but is it worth the 2000 dollars" Nobody can answer this question but you. Benchmark DAC runs around $1000 and is good. Bel Canto DAC2 is, according to Stereophile, bette... 
AM Station coming in through my outlet
Most likely you have kitchen outlets on the phase that local radio station is on while the other outlets are on separate phase. I have outlets divided half-half between two phases in my house. 
Quality of amps in bridged mono ?
In bridge mode output voltage is doubled and the power is quadrupled - therefore each of the amps delivers twice more power. Power supplies are not likely to be designed for 200%. Damping factor will drop by a factor of 2. Slew rate should be 2x b... 
Who uses what Class 'd' modules?
Acoustic Reality http://www.acoustic-reality.com/eAR202, etc (ICEPower)Aivin http://www.aivin.com.cn/DT300 (http://www.aivin.com.cn/files/english/products/proweb/DT300.htm) (Tripath)Analog Research Technology http://www.analogresearch-technology.c... 
Optimal digital cable length -- science or voodoo?
Steve - I feel the same. 500GB external Firewire drive costs about $100 and can store around 1000 CDs. Second external drive can be used as a backup kept in different house. In addition other formats with more bits and higher sampling rate can be ... 
Optimal digital cable length -- science or voodoo?
1.5m might be optimal for particular slew rate of the output driver but it is different from transport to transport. Some drivers keep constant dv/dt (slew rate control) while other don't. Calculation of the reflections effect on the signal shape ... 
How much power is to much power?
DF is limited at low frequencies by the choke in series with the woofer (0.08 Ohm typ.) to about 100 and by speaker wire inductance (0.5uH/ft typ) to about 10. It doesn't make much difference between DF=1000 or DF=4000.Amp's DF at high frequncies ... 
When is digital going to get the soul of music?
Mapman -"I suppose this is the video equivalent of digital remastering in audio"...except there is no body-doubles in the orchestra. 
When is digital going to get the soul of music?
It's very strange that audio is so difficult to reproduce in digital. We are able to make beautiful real like HDTV but not the perfect audio. I suspect that in the future audio DACs will become so complicated (sound processors) only designers will... 
When is digital going to get the soul of music?
Mapman - I looked into DCs Ring Dacs to see how they get more detail thru dithering and found out that they don't. Addition of noise in not intentional - it's just byproduct of their scheme. If I understand it correctly now, they use number of cur... 
When is digital going to get the soul of music?
Mmakshak - Dithering is a postprocessing technique that came, as Mapman pointed out, from imaging. It ads noise on sub-LSB level just before filtering. Master tapes are recorded in 24bit and it is not needed there.Mapman - Trickery is used mostly ... 
When is digital going to get the soul of music?
Mapman - Puccini is an oversampling player. It uses Ring-DACs - same DACs DCS sold license to ARCAM (FMJ-23). Arcam stopped making it because of DAC manufacturing yield problems (and stopped making FMJ23). Ring DAC possesses additional 4 current s... 
When is digital going to get the soul of music?
Learsfool - everything depends on the quality of processing. It does not remove high or any other frequencies (it can be easily proved) but suffers on details of conversion. It might be, I hope, one day possible, to get perfect quality of digital ...