eldartford

Responses from eldartford

Shure V15VxMR to be discontinued
Sean...Believe me, sean, it can be done. Analog implementation of the necessary algorithms was not possible, but digital servos can be absolutely phenominal.You want "fluid damping"? No problem...just a few lines of code. Oh and what would you lik... 
SACD vs DVD-A speaker set-up geometry
Ears...Antiphonal music has been around for centuries, but until now could not be recorded properly. Classical chamber music is sometimes performed "in the round" especially in small private performances. Many people have performed in orchestras, ... 
Slew Rate?
The only way that an amplifier can deliver current is by applying voltage to the load. You cannot deliver amperes without volts, so it is not an either/or proposition. However, an amp with a "weak" power supply might be designed to deliver a high ... 
Slew Rate?
Repeating something I have mentioned before, "settling time" tends to be the same as rise time, but really is not of interest in audio amps because musical sounds have leading edge transients, but die away gradually. This characteristic is used in... 
Can OTL's drive ribbons well?
In a tube amp, it's the output transformer that limits frequency response. Tubes themselves function nicely at RF frequency, and so do transistors for that matter. With an ultralinear circuit (with transformer secondary taps for feedback around th... 
Shure V15VxMR to be discontinued
Sean would have had my agreement up until the last 10 or 15 years, during which my work involved electromechanical systems including many digital servos. (It was a missile guidance system, and had about a dozen servos of one kind or another, but a... 
To tone control or not to tone control
Because of their bad reputation, and to satisfy purists, tone controls of many preamps can be bypassed. So it is no harm to have them, (and when no one is looking, you might like to use them). 
Chesky recording recommendation, please
Yes: the artists matter a lot. Last night I dug through my CDs (which have seen little use since I went to high res) and pulled out a 1982 Decca recording of the Tchaikovsky violin concerto, performed by Kyung Wha Chung, a young (then) woman from ... 
Tandberg sounds bright.
Edle and Tomryan...Your playback equipment may be tubes, but think about how many transitorized circuits the signal went through before it got onto the CD or LP. 
Order to Shut out or Light on a System?
I used to have a big problem remembering to do this right, but I solved it by buying an inexpensive Adcom ACE-515, which, in addition to providing a bunch of 115VAC outlets, also sequences them properly. The ACE-515 keeps high current switching ou... 
SACD vs DVD-A speaker set-up geometry
Kr4 is correct as to what is recommended. However, few people can arrange their rooms exactly as specified. Also, bipole/dipole speakers work fine. As always, speaker type and placement makes a difference, but IMHO there is no hard and fast "right... 
Crossovers
If I remember correctly there is a 90 degree phase shift (between woofer and tweeter) for each 6 dB filter section. So, 6 dB is 90 degrees, 12 dB is 180 degrees, 18 dB is 270 degrees, and 24 dB is 360 degrees. Note that the 24 dB filter restores i... 
There's a sucker born every minute
People who live in glass houses... 
Shure V15VxMR to be discontinued
No doubt resonance of the arm/pickup is an issue. Conventional wisdom is to arrange for the resonant frequency to be in some particular range that is thought to be best.In thinking about WHY my servo controlled "Biotracer" arm in the Sony turntrab... 
Multichannel amps that can drive low impedances?
Correct Sogood51...Three CarverPro ZR1600 will give you six channels for less than three grand.I had an experience where I screwed up the wiring in some speaker cables so that a short of about one ohm existed. Paralleled with this was the 4 ohm Ma...