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kijanki

Responses from kijanki

how to fix a CD player
Cleaning and lubricating helps, but I had once strange problem with Philips mechanism on Cambridge CD4SE player.  Felt at the bottom of the puck that presses down CD after door is closed was worn, leaving gap and making CD to wobble.    
sending signal wireless from Mac to DAC- whats the best way ?
My Mac Mini => Airport Express => Benchmark DAC3 via Toslink. Airport Express is no longer available, but you might find used or refurbish one. It limits transmission to 16/44.1 You can probably find some other Airplay receivers. I’ve heard ... 
Theoretically, How to Reduce Gain without Minimal Impact to Sound?
I have Benchmark DAC and power amp.  Benchmark recommends setting DAC's output high and amp's input low.  That way more signal amplification is done in quiet environment (DAC).  In addition it will be more immune to ambient electrical noise induce... 
Larry the Cable Guys
@jea48   This cable looks good/solid.  I would interleave "Line" and "Neutral" to reduce inductance further, but it might not be practical (difficult connectors assembly).   In addition some inductance might produce filtering effect for high frequ... 
Larry the Cable Guys
@jea48   What I said before about 4 wires having the same inductance as equivalent 1 wire would be true if 4 wires fit in the diameter of solid 1 wire - not possible because od added insulation.  With larger overall diameter of multiple insulated ... 
Larry the Cable Guys
So when you parallel four 20 gauge individually insulated wires, that gives an equivalent wire gauge of 14awg wire, (15 amps), is the net inductance the same for both conductors? Each of four individual wires will have higher inductance but con... 
Larry the Cable Guys
@jea48   I believe that he is simply wrong.  Thicker wire has lower inductance. Example:  2mm dia wire (gauge 12) has inductance of 345nH/ft, while 1mm dia wire (gauge18) has inductance of 388nH/ft  (not much of a difference) As for capacitance ... 
Larry the Cable Guys
Just one observation.  Thicker wire has lower inductance.  The reason for splinting wire into separate strands is skin effect.   For copper skin depth at 20kHz is about 0.5mm *  That would suggest keeping wires thinner that gauge 18.   In plain st... 
The Midnight Effect - Who-How?
@cleeds  Thank you for the info.  Do I understand correctly, that some AM stations have to operate at lower power at night (and critical hours), while "some" means stations that operate at frequencies of other (older?) stations?  
The Midnight Effect - Who-How?
Electromagnetic radiation or ambient electrical noise may play some role, but we are also getting quiet at the evening.  Our internal noise is reduced and focus increased (and the booze of course). @cleeds   They have to operate at reduced power,... 
The Midnight Effect - Who-How?
@cleeds   This is from FCC website: "Most AM radio stations are required by the FCC's rules to reduce their power or cease operating at night in order to avoid interference to other AM stations.  FCC rules governing the daytime and nighttime oper... 
The Midnight Effect - Who-How?
Radio stations have to reduce transmitting power at the evening per FCC regulation.  It is Section 73.187 of the Federal Communications Commission's rules to reduce power from 2 hours before local sunset to 2 hours after local sunrise.  
Loud vs. Tactile Bass
Many years ago I replaced 2.5 way with a bit larger 3 way speakers - same 30Hz extension, same amount of bass, equally tactile. The difference was in the sound of the bass - attack and decay, became more natural, more melodic.   IMHO it is not bet... 
Wool Blankets as Room treatment
Check out on second page sound absorption vs frequency.  I have 2" thick 817 panels (never installed).  
Wool Blankets as Room treatment
It will help with slap echo, but it will do nothing for mid and low frequencies.  Put wool blanket over your head while playing music - what you can hear will be reflected from the wall.   Even 2" thick double density (heavy), acoustic rigid fiber...