Old faithful amplifiers reliable built like a tank also pretty simple to make .To my understanding and from experience even though i repair thousands of amplifiers from this line i repaired only one and it wasn't even at failure .
Corrosion and exposed to moisture made some PCB issue but other than that absolutely nichts ....
Also these amps are notorious among the PA folks for hardly ever blowing a speaker even if pushed really hard .
So i wonder why Chinese amps and manufacturers do not copy this schematic
Is there any serious drawback ?
Corrosion and exposed to moisture made some PCB issue but other than that absolutely nichts ....
Also these amps are notorious among the PA folks for hardly ever blowing a speaker even if pushed really hard .
So i wonder why Chinese amps and manufacturers do not copy this schematic
Is there any serious drawback ?
To refresh memory these are the amps based on 5532 in the input a couple of drivers all transistors are grounded and rail caps are connected in the output I wonder if its ok to post a schematic its available anywhere in the Internet .
Kind regards
Sakis
Kind regards
Sakis
Maybe they had quite high power rails so they didn't clip so soon and output square waves destroying speakers ?
The Chinese do copy the modern version. - the RMX series. The original USA series were heavy, used expensive TO -3 outputs, and were labor intensive to build. The amplifier circuit is almost the same. But the RMX uses cheaper parts. Flatpack outouts (and fewer of them), SMD components, and the larger versions run class H to save weight and current. And when you try to copy the QSC making it even cheaper/lighter the copy gets unreliable quickly.
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