kijanki

Responses from kijanki

Small room....treating 1st reflection points
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Small room....treating 1st reflection points
Tom6897, Look at the link I posted. Table shows sound absorption vs frequency. I was mostly interested in taming slap echo and mid-bass frequencies. These panels are glass rigid foam. I've read that organic foam has non-linear characteristic (of a... 
Small room....treating 1st reflection points
It depends on frequency range. I bought 2" thick double density fiberglass foam panels - Johns Manville 817 (not installed yet). Sound absorption table shows good absorption at 250Hz dropping to 0.38 at 125Hz. For the lower frequencies 4" might be... 
Classe CDP-10 - Trouble reading some CD's
Dirty laser? I cleaned one in my MacMini few times using cleaning CD, but recently it refused to recognize CDs even after cleaning. I open the case and cleaned leaser gently using cotton Q-tip and Isopropyl alcohol. After that everything works fin... 
Computer vs CD/SACD discs
I also think CDs ripped to lossless files on FLAC can sound better than the original CD, my theory being the error correction while ripping produces a more stable file (but don't have a shred of engineering background to prove this).Austinbob, Mos... 
What does a Hexfred do?
Rectifier conducts until amplitude of AC voltage is lower than capacitor voltage (just after peak of the sinewave). At this point diode is reverse polarized and diode current drops to zero. Unfortunately it will conduct for a moment in opposite di... 
Why not magnetic tapes in stead of vinyl records?
Ralph, I agree. I was thinking of my air conditioned basement while others have finished attic. Humidity is perhaps the worst followed by temperature changes. 
Help fixing Receptacle
It is not simple - It LOOKS simple. Get licensed electrician. I was zapped couple of times by 220V and have to warn you that it is much, much worse than 120V. Don't take unnecessary risk. There are certain areas where saving money is not very wise. 
Why not magnetic tapes in stead of vinyl records?
As I said before - attic is possibly the worst place for storage of tapes with excessive temperatures, big temperature swings between day and night and uncontrolled humidity. I would rather store them in my basement that has pretty much the same t... 
Why not magnetic tapes in stead of vinyl records?
I guess baking and storage are different things since recommendation from National Technology Alliance states: "Storage at high temperatures ( > 74° F; > 23° C) increases tape pack tightness. This results in distortion of the tape backing an... 
Why not magnetic tapes in stead of vinyl records?
Onhwy61, Do you expect to be alive in 2089? Taiyo Yuden CD-Rs data retention is rated 100 years. Same for SanDisk flash memory. I need only 30 years - no issue for me. 
Why not magnetic tapes in stead of vinyl records?
Kijanki, I'm not having a cow- its pretty apparent you jumped in without reading the rest of this thread:The original question was "But, why don't they just copy the magnetic tape to other magnetic tapes and sell us those?"I've tried to explain i... 
Why not magnetic tapes in stead of vinyl records?
Ralph, where one gets analog recordings? Where to store thousands of tapes in proper temperature and humidity? How often to rewind them to avoid print-through copying? Ampex recommends rewinding within 3 years of storage (and to keep track of it).... 
Why not magnetic tapes in stead of vinyl records?
Practical, flexible and easy does not equate to best sound To get absolutely best sound I could hire Symphony Orchestra to play in my home, but it would be expensive and impractical. 
Why not magnetic tapes in stead of vinyl records?
Ralph, that's true, but practicality is important at home as well. I've heard opinion that best analog TVs were better than modern digital HDTV. I don't question that, but it perhaps was very expensive set in studio conditions, plus analog broadca...