Audio Amplifier Input Stage

Randy Knutson · 20th June 2004, 03:03 AM

Hi,

I'm designing the input stage for a power amplifier and was wondering if you pros could critique it. This is the first time I've ever designed something like this so any critisicm would be helpful! I'm aiming for something simple, cost effective and that sounds reasonably decent.

Thanks,
-=Randy Knutson

Bill Fitzpatrick · 20th June 2004, 05:13 AM

That's not an amplifier input stage. Looks more like a pre-amp to me.

Jan Dupont · 20th June 2004, 11:17 AM

Sure look like a preamp

You are missing the Voltage Amplification Stage.....

richie00boy · 20th June 2004, 08:33 PM

I'd say it's a pre-amp as well, but I know what you meant

Some good ideas in there, but I think you may have trouble sourcing a 3-gang pot for the filter.

20th June 2004, 11:17 AM	#3
Jan Dupont diyAudio Member Join Date: Apr 2003 Location: Copenhagen, Denmark	Sure look like a preamp You are missing the Voltage Amplification Stage..... __________________ Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com

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20th June 2004, 05:13 AM	#2
Bill Fitzpatrick diyAudio Member Join Date: Jun 2001 Location: Eugene, OR	That's not an amplifier input stage. Looks more like a pre-amp to me.

20th June 2004, 08:33 PM	#4
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	I'd say it's a pre-amp as well, but I know what you meant Some good ideas in there, but I think you may have trouble sourcing a 3-gang pot for the filter.

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