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Old 15th December 2003, 04:19 PM   #1
nbcd is offline nbcd  Romania
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Default 22Kohm instead 20K

Hy all
I have done the amp from

http://sound.westhost.com/project03.htm (see the second schematic)

and it sounds great but i replaced the 20Kohm potentiometer with 22K.Is there a difference ?How can i obtain grater output power?
Regards!
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Old 15th December 2003, 04:23 PM   #2
sreten is offline sreten  United Kingdom
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Location: Brighton UK
Default Re: 22Kohm instead 20K

Quote:
Originally posted by nbcd
Hy all
I have done the amp from

http://sound.westhost.com/project03.htm (see the second schematic)

and it sounds great but i replaced the 20Kohm potentiometer with 22K.Is there a difference ?How can i obtain grater output power?
Regards!
a) none at all.

b) with great difficulty if you have a decent power supply.

sreten.
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Old 15th December 2003, 11:02 PM   #3
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Location: Harlowton, MT, USA
22k would be within 10% anyway, there would be no difference, especially since it is a pot and will probably be nowhere near the limit anyway.

If you want more power, you will need to up either the gain or the input signal level, use higher voltage rails (and devices that can handle it), and more power transistors. However, there is a practical limit before the circuit will need more design changes.
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