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-   -   Quality in a Cool Follower 99 (http://www.diyaudio.com/forums/solid-state/12542-quality-cool-follower-99-a.html)

GMS 16th March 2003 04:04 PM

Q about "Cool Follower"
 
http://www.audiodesignguide.com/my/Cool_Follower1.GIF
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?

GMS 16th March 2003 04:23 PM

quality in a "Cool Follower 99"
 
how the audio quality in the "Cool Follower 99"???
how can i get more power in 4 ohm?

PMA 16th March 2003 07:36 PM

You have to increase quiescent (iddle) current.

GMS 17th March 2003 08:39 AM

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?

GMS 17th March 2003 08:57 AM

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...

peranders 17th March 2003 09:05 AM

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 :confused:

peranders 17th March 2003 09:07 AM

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.

Tube_Dude 18th March 2003 12:15 AM

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!

Regards

GMS 18th March 2003 01:59 PM

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....

GMS 18th March 2003 04:08 PM

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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