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Tube rolling - Page 12

post #166 of 175

Fine, I'll bite.

 

What is your methodology to get a flat response? I will try it myself and see.

post #167 of 175
Quote:
Originally Posted by bigshot View Post

My CD collection includes music going all the way back to the turn of the century too. When the older material is transferred to CD, the engineers balance the EQ and conform it to playback for a flat response. The only time you would need to apply all the various curves of pre-hifi recording is when you play back an original shellac disk. You would apply that particular curve using an equalizer.

If your EQ curves on your music really were all over the place, a tube amp wouldn't fix that. A tube amp has a specific fixed response, just like a solid state amp does.

Achieving a flat response in playback isn't easy. It took me about two months to get balanced. But it's worth it. I almost never touch my tone controls and everything sounds good.
 
Quote:
Originally Posted by elmoe View Post
 

What is your methodology to get a flat response? I will try it myself and see.

 

I imagine something like a calibration microphone would be very beneficial: http://www.cross-spectrum.com/measurement/calibrated_dayton.html

 

if you've got three microphones lying around, you might be able to use a technique like this to calibrate them for testing: http://www.nist.gov/calibrations/upload/aip-ch8.pdf

 

Cheers

post #168 of 175
Quote:
Originally Posted by ab initio View Post
 

 

I imagine something like a calibration microphone would be very beneficial: http://www.cross-spectrum.com/measurement/calibrated_dayton.html

 

if you've got three microphones lying around, you might be able to use a technique like this to calibrate them for testing: http://www.nist.gov/calibrations/upload/aip-ch8.pdf

 

Cheers

 

Thanks, I'll have to invest in one (or three). I'll give that a serious read when I have more free time.

post #169 of 175

I used the calibration system on my Yamaha AV receiver and it identified a bump at the crossover between my mains and my sub, but it totally messed up everything else. It's a good starting place though. I'm recovering from surgery, but when I'm feeling a little better, I'm going to start a thread on how I set up and calibrated my 5:1 system.

post #170 of 175

Yes that's right, I will wait for your thread and use it as reference then.

post #171 of 175
Quote:
Originally Posted by bigshot View Post

I used the calibration system on my Yamaha AV receiver and it identified a bump at the crossover between my mains and my sub, but it totally messed up everything else. It's a good starting place though. I'm recovering from surgery, but when I'm feeling a little better, I'm going to start a thread on how I set up and calibrated my 5:1 system.

Feel better. I'm waiting to learn from the master.
post #172 of 175
I'm not a master, I've just made all the mistakes so you don't have to.
post #173 of 175
Quote:
Originally Posted by bigshot View Post

I'm not a master, I've just made all the mistakes so you don't have to.

Maybe that's precisely what a master is.
post #174 of 175

Truth is when you spend big bucks for a tube amp vs same quality ss amp, it is flat out transformers in tube amps are better built ,and cost a hell of a lot more than most transformers in ss amps.  And in many instances better caps and some are still point to point. That in itself is a sonic improvement over a pcb board with microscopic copper lines transmitting a signal.  That is not to say there is no good sounding ss equipment out there.  My ears just prefer tube amps.

post #175 of 175
Most solid state amps are auraully transparent... balanced response, inaudible levels of distortion, super low noise floor. Even midrange solid state amps don't have a sound. If there are differences in caps and transformers, it isn't audible. The nice thing is the consistency of transparency. I can EQ my system and replace my amp with one with the same power rating and not have to re-EQ. I can swap in players and amps without affecting anything further down the chain.
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