JFet vs bipolar

[jewilson]

I can't believe some of you folks still believe that a 5532 or a 5534 are good sounding parts. These parts were designed in the early 80's at at the time they still were not as good as PMI OP15 0r 17 and many AD parts.

If you can't tell the difference between these parts and the current crop of Burr Brown or Analog device part you should check with your Doctor Soon.

Questions to Discuss with Your Doctor:

Is your hearing loss on one side or both?
For how long have you noticed the problem?
Has your hearing loss been getting worse over time?
Do you have difficulty understanding other people when they speak?
Do you say "what?" a lot?
When you turn on the television, do others say that it is too loud?
Have you had any kind of ear surgery?
Have you flown in an airplane recently?
Do other people in your family have trouble hearing?
Do you hear ringing in your ears?
Do you suffer from dizziness or loss of coordination?
Have you had been listening to 5534 or 5532.?
Do you currently have an upper respiratory infection?
Have you had any head injuries or strokes in the past?
Are you taking any drugs?
Are speakers from the 1960?

[Steve Eddy]

Originally posted by jewilson
I can't believe some of you folks still believe that a 5532 or a 5534 are good sounding parts. These parts were designed in the early 80's at at the time they still were not as good as PMI OP15 0r 17 and many AD parts.

If you can't tell the difference between these parts and the current crop of Burr Brown or Analog device part you should check with your Doctor Soon.

Questions to Discuss with Your Doctor:

Is your hearing loss on one side or both?
For how long have you noticed the problem?
Has your hearing loss been getting worse over time?
Do you have difficulty understanding other people when they speak?
Do you say "what?" a lot?
When you turn on the television, do others say that it is too loud?
Have you had any kind of ear surgery?
Have you flown in an airplane recently?
Do other people in your family have trouble hearing?
Do you hear ringing in your ears?
Do you suffer from dizziness or loss of coordination?
Have you had been listening to 5534 or 5532.?
Do you currently have an upper respiratory infection?
Have you had any head injuries or strokes in the past?
Are you taking any drugs?
Are speakers from the 1960?

Jeeezuz. What would you recommend for someone who still believes that vacuum tubes designed in the early '30s are good sounding parts? Sterilization so they can't reproduce?

se

[richwalters]

post 11# Unconvincing diagnosis...... Alot of todays classical/pop music still goes through older consoles which still use 5534's before AD processing, then what happens to it is anyone business. Okay the older Ic's are on their way out, but I always remind people just to take a look at the quality of the electronics and HF that comes out of their CD player. Not all anti-aliasing filters are clean.

In 1985/6 I fitted the OP17 (in lieu of 5534's) in studio consoles located Air Studios in Monserrat (Bahamas), and nobody liked the sound. The same in Hook End studio's, Bagshot (UK). So what's next ?
Super technology is NOT always the answer.

rich

[Samuel Jayaraj]

If you have a circuit using the NE5534, just plug in a TLE2141 and check the difference in the perceived naturalness of the sound (remove the compensation cap, if the NE5534 is used in unity gain mode).

Discretre circuitry when executed correctly, outperfom almost all chip opamps, with fewer parts count.

Some here who have preferred the NE5534 and NE5532s need to check these out in wide variety of circuit designs, substituting other opamps as well as discrete circuitry and before long you will use these old champs of the audio industry only when you must.

[macka]

A while back Ben Duncan did some tests and comparisons on a wide variety of chips regards distortion spectrographs the 5532 was one of the better ones.

It depends on what you are trying to do and the application of the device. Drop in comparisons a not really apples for apples really.

The better designers select the chip for specific characteristics and use a modest amount of gain per device, class A biasing if required and careful use of FB to avoid overload.

Unfortunately chips almost always have very high open loop gain and low drive capability and are not class a for more than a fraction of a milliamp.

Many are class B and use puesudo distortion cancelling mechanisms leaving the sound subjectively cleansed and acid.

No wonder so called discrete opamps are leagues ahead with direct control of parts count and topology.

macka

[millwood]

Originally posted by jewilson
These parts were designed in the early 80's at at the time they still were not as good as PMI OP15 0r 17 and many AD parts.

along the same line, let's throw out Newton's laws. afterall, it was discovered a millenium ago. Relativity isn't much better too.

Just because something is old doesn't mean it is bad.

[macka]

In an archive thread there were people raving about the Kaneda preamp, a legend never to be repeated.

Well is an identical circuit by Marshall Leach, a discrete universal opamp using dual diff amps both fets and Bi polar.

Ian

[jewilson]

SE, as you no there no compairson between a good tube design and old opamps designs.

SE, Sorry to here that you support using the 5532 or 5534.

[Steve Eddy]

Originally posted by jewilson
SE, Sorry to here that you support using the 5532 or 5534.

What I support is people using whatever sounds best TO THEM. What I don't support is the intolerance of those who impugn and ridicule others whose tastes and preferences may be different from their own.

Sorry to hear that you're so insecure and troubled by others not liking the same things that you like that you would go to such lengths to ridicule them.

se

[mlloyd1]

This is circuit configured as a gain block makes a fine gain stage. I've used it both as an RIAA stage and line driver. Nice !

Originally posted by macka
In an archive thread there were people raving about the Kaneda preamp, a legend never to be repeated.

Well is an identical circuit by Marshall Leach, a discrete universal opamp using dual diff amps both fets and Bi polar.

Ian