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Old 16th March 2003, 04:04 PM   #1
GMS is offline GMS  Israel
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Exclamation Q about "Cool Follower"

Click the image to open in full size.
in the pic... which transistors to the o/p and for the driver ??
and can i connect a NE5532 opamp for the input and the amp will work good?
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Old 16th March 2003, 04:23 PM   #2
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Question quality in a "Cool Follower 99"

how the audio quality in the "Cool Follower 99"???
how can i get more power in 4 ohm?
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Old 16th March 2003, 07:36 PM   #3
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You have to increase quiescent (iddle) current.
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Old 17th March 2003, 08:39 AM   #4
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how amp so much simple to work good ??!
have to be a something "****" in the amp...

if i up the volt to 60V+- and more O/p transistors... can i get high power in 4 ohm?
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Old 17th March 2003, 08:57 AM   #5
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Quote:
Originally posted by GMS
how amp so much simple to work good ??!
have to be a something "****" in the amp...

if i up the volt to 60V+- and more O/p transistors... can i get high power in 4 ohm?
*how amp so much simple *can* work good??!
have to be a something *defective* in the amp...

sorry about the mistakes...
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Old 17th March 2003, 09:05 AM   #6
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A comment to the picture:

"designed by Andrea Cuiffoli original and never seen design"

This design is very common in opamps and especially current feedback! I can agree to that the design is not very common in power amps. One of the reasons may be the uneffeciency. The current amplification isn't so high. I have also doubts about the thermal stability
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Old 17th March 2003, 09:07 AM   #7
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Quote:
Originally posted by GMS
how amp so much simple to work good ??!
have to be a something "****" in the amp...

if i up the volt to 60V+- and more O/p transistors... can i get high power in 4 ohm?
Don't forget that this is not a complete power amp, only the last output stage.
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Old 18th March 2003, 12:15 AM   #8
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Default The folower that is "cool"...

Quote:
can i connect a NE5532 opamp for the input and the amp will work good?
Yes it will work ...but don't forget that the voltage rails of the NE5532 are +-22volts...so the output stage will not be drived to full output...as your output stage doesn't have voltage gain!

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Old 18th March 2003, 01:59 PM   #9
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i can put a resistors.... like 600Ohm 3W ... can i to the NE5532?

can i us this amp for a PA ?

and what the capacitors do in the input ??? - thay must be ?

but i dont believe that this amp will work good.... is can ?
because is so simple....
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Old 18th March 2003, 04:08 PM   #10
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this amp can us for PA ??
and to on the ne5532 on 45V+- can i us in power resistor...
the 380 Ohm and the caps is obliged ??
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