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Old 13th August 2002, 07:33 AM   #1
palesha is offline palesha  India
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Default Level Control Circuit

I have built one amp of 8w+8w+16w(sub) for using with VCD/Audiocd/PC with 300 mv sensitivity. But sometimes with different input or cd's i get very low output and sometimes good output. Hence i think i must put and additional preamplifier at the input but with level control so that i can get full output always. Kindly suggest me circuits which i can use?
MP
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Old 13th August 2002, 09:16 AM   #2
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Default level control

Well, if sometimes you get too low output, that means you need gain. Then you need a volume control to lower the volume for the loud sources.
What type of amp you build? Can you build a small gain stage from an opamp?

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Old 13th August 2002, 05:35 PM   #3
palesha is offline palesha  India
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I have volume control at the input. But i want auto level control circuit so that i can get full output with low/high inputs.
MP
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Old 13th August 2002, 07:10 PM   #4
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Quote:
Originally posted by palesha
I have volume control at the input. But i want auto level control circuit so that i can get full output with low/high inputs.
MP
Huh? Auto level control? Welllll, that's a whole new ball game. Could you please take some time and try to be more precise what it is exactly that you need? And please think it trough: Do you want ALL sources brought to the same level first and then go to the volume control or what?

(Hint: most auto-level circuits are not particularly HiFi)

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