rodman99999

Responses from rodman99999

Speaker's efficiency, sensitivity and impedance
Tvad- Read Robert Harley's "Complete Guide to High End Audio" available from Amazon=8>) The sections on "How Much Power Do I Need?" and "The dBW Power Rating" may lend some clarity. The only aspect Mr Harley leaves out is converting volts to dB... 
Speaker's efficiency, sensitivity and impedance
Jeff- View the last site(URL) in my last post. There's a brief treatise on how impedance, amp output and sensitivity affect a system's SPL(just past the halfway point of the article). 
Speaker's efficiency, sensitivity and impedance
YES- semantic gymnastics seems the most popular sport in the audio industry, and these forums. You can see by the definition for "sensitivity/efficiency" given by a company some of you MAY be familiar with(after all the years they've been manufact... 
Bi-wire cable for non-biwire speaker?
Absolutely- Not a problem! 
Rewiring Audio Note from 125v to 230volts
It depends on if the unit was built with a dual voltage transformer. Are there four leads on the primary(voltage in) side of the power transformer? If there are: see if they are marked 1, 2 ,3, 4 or X1, X2, X3, X4. If so: disconnect the 2 and 3 le... 
Help with a Western Electric Rectifier Please
I'm certain there are many in "here" that know what a "rectifier" is. However: What you have described is NOT. A rectifier(either full or half wave) will either be comprised of a Selenium or copper oxide stack, diode bridge or tube that converts A... 
A 9 watts SET for the Maggies, Heavenly marriage
Try a pair of these: (http://www.caryaudio.com/products/classic/CAD805AE.html) 
Speaker's efficiency, sensitivity and impedance
A speaker's(or speaker system's) efficiency/sensitivity rating is determined by it's SPL output in DB with a 1 Watt(or 2.83v) input, measured on axis at a distance of 1 meter(in an anechoic chamber). The speaker's impedance is not relevant in this... 
Rethinking Listening Fatigue
My first thought would be toward Intermodulation Distortion, which is a particularly annoying form unlike Harmonic Distortion. The correct definition of which is distortion created when an amplifier creates a frequency, the sum or difference of tw... 
Audio Research 230/240 volts
You should be fine with that piece. Even if the transformers weren't the same, the lower voltage unit would only operate at a slightly elevated temperature as there is only about 4% difference in the ratings. Many of the older Audio pieces over he... 
bi amping question
The 6L6WGB and 5881 tubes are identical(just FYI). I'd suggest contacting Kevin at Upscale Audio and asking his response to the sound of the TungSol re-issue 5881: (http://www.upscaleaudio.com/product.asp?itemid=574&catid=87) I've never tried ... 
Subwoofer Power Amplifier Recommendations
I USED to think one needed tons of power to reproduce the bass in music too. Then it dawned on me that that vast majority of the music(percentage wise) is above 150hz. I'd say get one of the A500s here:(http://www.samedaymusic.com/product--BEHA500... 
What's a good cartridge for infinity black widow?
The chances of finding a Sonus Blue cartridge with a rubber compliance that wasn't hardened by now would be very slim. That's unfortunate as it would be ideal for the Black Widow arm(I had one in a Magnepan Unipivot I way back when). Replacement s... 
Will an outside DAC over ride the tubes
Here's a site that details some of the various flavors that can be experienced with different 12AU7 family tubes: (https://www.tubeworld.com/12au7.htm) My own choice would be the Siemens E82CC(Spec. Qual., triple mica) or Telefunken ECC802S, both ... 
Anyone else miss audiophile nervosa?
So- When one has "ameliorated the problems" and tuned/tweaked their system to play 'Brothers In Arms' in an acceptable manner, what happens when albums that are well recorded are played on that system?