eldartford

Responses from eldartford

Please Help Can't get rid of radio station.
Dirty contacts in the phono pickup wiring can cause this.In order to hear the audio modulation of the radio station RF signal you need a diode, and some corrosion products can serve this function. Also, make sure all the shields are well grounded.... 
Subwoofer X/O frequency experiments
Davehrab...Hey, those Russian babes really got to you! I am sorry to say that they are about 21 by now, but still quite desirable.With regard to "safe" design decisions, military stuff is much more conservative than commercial. The consequence of ... 
Using 120V amp in a 100V area
It all depends on whether the equipment has a regulated power supply or not. A piece that I just bought does have a regulated supply, and, according to the owner's manual, will function properly with ac voltage from 92 to 130 volts, 50 or 60 Hz. A... 
Am I crazy????? Try THIS
The experiment has been run, and here are the results.The Boston Acoustics speaker weighing ten pounds was suspended by a single rope, so that it was about ΒΌ inch above a table top..just about ear level for a seated person. The center of the speak... 
Subwoofer X/O frequency experiments
Davehrab...What you explain is the conventional wisdom, and what I described as a "safe bet". In many, but not all, cases significantly higher X/O sounds better. 
Speakers for vocalists
Gregm...Maybe God knew what he was doing when he designed the human voice. Just joking, but it always surprises me how many technical "inventions" have parallels in biology. 
"Pseudo" balanced interfaces.
Transporter...If you are saying that single ended is fine, for most situations I agree with you. My observation is that all the line noise reduction capability of a balanced interface can be provided at almost no cost, (with no active circuitry) a... 
Speakers for vocalists
Gregm...Did you know that the human voice has several vocal cords? In other words, not a full range driver :-) 
Watts - Volts and Resistance
Herman...Whoops...I divided by 4 instead of 2. (Confused by the quad thing). So it's about sixty watts into 4 ohms, and maybe 40 watts into 8 ohms. 
Am I crazy????? Try THIS
Line...I have a little Boston Acoustics A40 that I will try. I have weighed it (10 pounds) and trussed it up with a rope so I can hang it. I haven't got around to doing the experiment yet...will report results. 
Watts - Volts and Resistance
The note on the back of the receiver probably says that it draws 535 watts of AC power when it is maxed out driving 4 ohm speakers. This would suggest that its total audio output is probably about 50 percent of 535 watts, which is 133 watts. You s... 
Am I crazy????? Try THIS
Line...Unfortunately no audiophile on this site would confess to having Bose 901s, so we can't check this out. :-) Maybe I'll give it a try (quickly so the wife doesn't see) with a Maggie.Your point is well taken that those Bose 901s have a lot of... 
Am I crazy????? Try THIS
As I said, some people will continue to believe that music will set suspended speakers swinging, until they actually try it. Of course (unless you use three chains) they can swing if you get them started some other way, like a room fan. 
Current source/Voltage source, and like questions
Timpani...Your suggestion that current feedback should be frequency dependent sounds right, but I think it should be the other way around. It is the woofer that exhibits that big impedance hump at resonance, where current control would be effectiv... 
Wife approval factor?
You guys obviously do not fancy Maggies, or other "ugly room dividers".