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barjohn

Responses from barjohn

Why have capacitors improved so much over the years?
The big difference is in manufacturing tolerances.  Back in my early days in electronics (60s) 5% or even 10% tolerances in values were frequently used because it cost money to get to 1% tolerance or better.  MilSpec parts often had to measure far... 
Subwoofer Footing - Connect or Isolate?
Question:  Why would a manufacturer build and sell a product that will not work optimally with the feet supplied knowing that a bad review can kill sales.  If you have to spend $200 + to make their product work properly shouldn't they tell you tha... 
Best Preamp and Amp combination, interesting finding!!!
Unless you are dealing with analog input such as a tape or vinyl the best preamp is no preamp.  Keeping the signal digital and in the digital domain into a digital power amp where it is converted to analog for your speakers will produce the best p... 
Which subwoofer?
I am using the ML Dynamo 800X with my ML ESLs and with the built in Anthem Room Correction and numerous settings for low pass filter, type, phase, volume, listening modes, 20-30Hz level, etc.  It is a sealed sub woofer and should blend well with a... 
Considering a POSSIBLE replacement for speakers. Opinions?
For something a little different but very transparent with a wide sound stage you might look at the Martin Logan Electromotion ELS or ELSX speakers.  They sound fabulous and being hybrid speakers they have base down to 40Hz.  An additional benefit... 
Class D amps seem poised to take over. Then what?
Modern Class D amps like those from Hypex or ICEpower (used in many high end brands) are simply excellent performers, musical ruler flat frequency response, SN numbers that other amps can only dream of achieving and they are respectful of power us... 
Different amplifier class for different music genres?
Have any of you wondered about some of the comments I see about amplifiers and speakers when you consider what a real live band (especially rock) is using to create their sound.  They are using a guitar amplifier and speaker combo, PA quality spea... 
Looking for an amp that punches way about its weight and I can grow with
I just purchased a pair of ESLs and an 800X sub but I don't get the push for tubes I frequently see here and elsewhere on the forum. A bit of background, I was a Navy tech when tubes were the primary device for amplifiers, oscillators, etc.  I wen... 
What is it you expect to hear from hifi gear that you have not yet?
Whether your DAC support 24 bit 48KHz, 96KHz, 192KHz, etc. really doesn't matter.  Recording studios only use 48KHz so anything above that is fake.  It is like playing back a 720P video signal on an 4K TV.  It will try and upscale the signal but i... 
What is it you expect to hear from hifi gear that you have not yet?
I look for two things in a music reproductions system:1. I want piano music to sound like it is coming from a real piano playing in the room no matter where I am in the room.2. I want to be in the next room and have the music trick my mind into be... 
What would happen when you under Bias your tubes?
The bias voltage is set to have a class A amplifier operating in the linear portion of the range.  The amplification across the frequency range will only be linear over s relatively small portion of the tube's amplification range.  You can easily ...