eldartford

Responses from eldartford

Phonostage Burn-in to keep unit sharp
Yesterday I accidentally tuned my FM tuner to a Rap music station and it played through my amplifier for several minutes before I realized what was going on. This caused the transistors to become very traumatized, and I expect that several hours o... 
acoustic vs. electronic
It was long believed that those early (pre-electronic) recordings had "a lot of static and noise, and no bottom or top end, with very limited dynamic range". In recent years it has been discovered, through digital conversion and analysis, that hig... 
why spikes under speakers???
First Law....You can't win.Second Law...You can't break even.Vibration must be converted to heat in some damping medium. If you "drain" vibration to the earth, you are contributing to global warming. Shame! 
Subwoofer Amp Recommendations
Sean...The DC blocking capacitor of the typical power amplifier (non-DC-coupled), is at the INPUT, not the output. The only power amplifier that I know of with a series capacitor output is (was) the Dynaco ST120, their first solid state amplifier,... 
Mono recording question...
The MONO switch on a preamp adds the two input channels together and outputs this result to both channels. This will cancel any signal that is out of phase in the two input channels. This is a good thing to do when, for example, playing a Mono LP ... 
If Audio bug never hit you, what hobby might have?
I would own my own airplane. 
advice on hiding cables
Purchase $6000 cables, and display them with pride. 
phantom center channel
Kr4...I beg to differ with you about the effectiveness of deriving a center channel from a 2-channel source. In many recordings where there is a soloist, he/she was originally recorded as a discrete channel, and was subsequently mixed equally into... 
integrateds in the modern age: consensus?
If all the source signals are at line level (which means that any TT has its own outboard phono preamp) a separate box called a "preamp" really makes no sense. It costs very little to build the selector switch and volume control into the power amp... 
Equipment Set-up Recommendations?
Tbg...I am quite sure that this vibration isolation table would clean up any mechanical vibration affecting a TT. But, my experience suggests that acoustic input to the LP remains a problem even when the mechanical input is reduced to zero. A reco... 
phantom center channel
Snofun3 is correct, for movies. If multichannel music is the objective the center front channel is the most important of all. 
Equipment Set-up Recommendations?
Tbg...It was at work several years ago, and our purchasing people actually bought the thing so I don't remember the manufacturer. However, I looked at the Halcyonics web site, and their model MOD 1M plus looks exactly like what I used. Our missile... 
Equipment Set-up Recommendations?
Tbg..OK I found the website which has a good technical description. A very clever device. The picture I found earlier looked very similar to the electronic table that I used. And the price is about the same. The performance is also similar. 
Equipment Set-up Recommendations?
I gather that the Minus K BM-1 isolation platform is an electronic device. Long ago I recounted, for audiophiles, my experience with vibration isolation in context of using a large dish of Mercury as a reflector for optical work. Ripples on the su... 
Is this ludicrous or not?
Believe it or not, the geographic orientation of a tube amp might make a difference, good or bad, who knows. On my job, I was very surprised to discover that certain test measurements of a missile guidance system were affected by its orientation. ...