HOW TO MAKE A PROPER AMPLIFIER

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Mr Wayne,

Meitner amp (is Class AB) =>
 

Attachments

  • Meitner Melior.jpg
    Meitner Melior.jpg
    41.2 KB · Views: 282
seen inductors inside an A/B production amplifier before ?

More exotic choke power supply examples, which may sound less rare to you ;

- Cello, e.g. Performance, Encore.
- Viola, Bravo model.
- From fellow forum member Mr Gerhard, bass amp for the Cerubin loudspeaker.

Example of a current production power amp with regulated output stage rails (capacitance multiplier), Orpheus Privilege.

(I was informed recently that the Sanken regulated amp got booted to obsolete stage. As the Omega man is retiring in a couple of years also, all good things come to another end)
 
The L in a an rCLC PSU reduces mains interference feeding into the amplifier.
It also reduces the rectifier noise trying to feed in with the interference.

How is the value determined ...?

More exotic choke power supply examples, which may sound less rare to you ;

- Cello, e.g. Performance, Encore.
- Viola, Bravo model.
- From fellow forum member Mr Gerhard, bass amp for the Cerubin loudspeaker.

Example of a current production power amp with regulated output stage rails (capacitance multiplier), Orpheus Privilege.

(I was informed recently that the Sanken regulated amp got booted to obsolete stage. As the Omega man is retiring in a couple of years also, all good things come to another end)


Interesting , so why not more common place Dutchie ...?
 
www.hifisonix.com
Joined 2003
Paid Member
Might be more accurate to state the max allowable ripple level on the rails, and at which load, for "high end" amps.
Or explain why PS capacitance should go up linearily with power instead of the sqrt of output power.

(device Vce at least 125% higher than max supply rail voltage)

Yes, you can of course quote it in terms of ripple voltage for a given load. LTspice very useful for this kind of analysis.

Like all of these things, there is no right way or wrong way up to a certain point. If you are designing an amp, you get to decide the parameters.
 
www.hifisonix.com
Joined 2003
Paid Member
"I guess you discount new switchmode for audio technology then? I recommend you watch this space, some of these things are starting to do extremely well. I just bought my first pair to try and it took some convincing let me tell you. fully regulated 500W using what is basically a. . . "

I think they can me quite good if you use the right topology.
 
www.hifisonix.com
Joined 2003
Paid Member
"So you have not done any subjective analysis regarding added capacitance in the psu ...? "

During development of my earlier power amp, I tried it on 6800uF per rail. Going to 34000uF per rail seems to improve the subjective sound. I did not repeat his experiment on the latest amp since I tested the amp with the final PSU.
 
migration of electrolyte in a vertical position is calculated thing there is enough inside to cover the plates

That doesn't appear logical. If there's enough to fill up the can in the vertical position, then mounting it horizontally cannot make any difference. If you fill up a glass with water, seal the top, and then place it horizontally, the water will not "migrate" to the bottom side of the glass.
 
Here is an example of an amplifier that eventhough made almost 15 years ago preserve some rules that a lot of people scream about in our forum for many years ( for people that manufacture and construct ) and the amp it shelf sets a level of perfection in amplifier construction .


kind regards
sakis

I see a huge number of potential problems with this amplifier, from the use of Fastons for signal wires, to screw terminals for power leads, to various other quick disconnect fittings on the circuit boards. All of these kinds of connectors can cause a relatively high resistance, or in the case of the screws, work loose. Heat cycling for example can make screws come loose. Any connection that's important to me gets soldered.
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.