Slewmaster - CFA vs. VFA "Rumble"

That was my design. The basic idea comes from Crest Audio. Unfortunately never built...

Sajti
 

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OS....how about a Thread Re-Boot for POST 10,000. Do you have any ideas?
like... "It's all about the sound quality you experience in your room"

BEST SOUND WHEN: Each speaker has its own room-optimized crossover and load-optimized amplifier. So, put an active crossover for each amp channel into the amplifier chassis.

---New PCB and packaging design ideas optimzed for combining digital/analog active crossovers along with multiple amplifiers of different power and design into one chassis.
---Shared power supply and protection = common standards
---Output PCBs which can be easly converted for 1 full set or 2 partial sets of output transistors
---Diverse circuit driver PCBs which can be mounted on top of common output PCB. full or partial output set.


Beyond that = "Save the planet one amp at a time" More like - class D for
bass , class G for 100hz-20khz. SMPS to power them all.


While still retaining analog fidelity , BTW.

Edit - good idea. Bi-amping with class G +SMPS will be a new thread.
OS
 
"Save the planet one amp at a time"
More like - class D for bass , class G for 100hz-20khz. SMPS to power them all. OS
Is there an accepted "amplifier efficiency vs. THD" grading system?

"Save the planet one amp at a time"
"Save the planet one horn speaker at a time"

For my home speakers, the woofers consume over 85% of the power.
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"It's all about the sound quality you experience in your room"

BEST SOUND WHEN: Each speaker has its own room-optimized crossover, and load-optimized amplifier selected for efficiency vs. THD.

Reference Candidate:
1) "Barney Oliver 26mv" Class_A/B bias point for the high power demand woofer amplifier.
2) Use Class_A Plateau Bias for the modest power demand midrange and tweeter amplifiers.
3) Share one large distributed capacitance analog power supply to reduce diode + resistance drops.

For Class_A/B amplifier circuits, there are a couple of clever, proven, efficient sliding bias schemes which could be revisited, analyzed, and updated. I've been using a Plateau Bias scheme which idles with a few watts of Class-A bias power/heat, and quickly selects a higher bias point to maintain Class_A for a modest period until a lower Class_A bias plateau can be used. None of the sonic artifacts of a fully dynamic sliding bias.
 
As you stated Osipper, became the receiver. Philosophy of wolferine aka boy who cried wolf. As you probably already know what is the best way to ruin a kalman filter. Recycle, bicycle, as causality.
The Precycle followed by prediction not to have a long offcycle could been probably prevented by assuming to feed right values in simulator.
So what is the moral of the story, I leave it to you
 
All the transistors are still available from Mouser for the Kypton-ND. Ostripper just used the LT1022 for simulation purposes. TL072 is the normal op amp of choice for Slewmaster servos.

512-KSA1381ESTU
512-KSC3503DSTU
512-BC560CTA
512-BC550CTA
512-KSA992FTA
512-KSC1845FTA
595-TL072CP
 
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