need volume control for simple ipod amp - Electronic Circuits Projects Diagrams Free

czubek · 4th August 2008, 02:00 PM

Using the line outs from my ipod and feeding to a sure electronics 2*8W @ 8ohm/4ohm MP7720 D-Class Audio amplifier. Amp feeds the 4ohm stereo speakers in my ford ranger. Sound is great but volume is fixed and i cannot control. discovered that i need a pot, (dummy=me). using car voltage=12v. amp can deliver 8W into 2-4ohm/8/ohm at 24V max. can anyone suggest a brief spec for a stereo pot that i should get. they are listed at the radio shack site with associated resistance ranges. i don't have the actual amp circuit but a suggested circuit for the MP7720 indicates athe audio input feeding a 1uf capacitor in series with a 10kohm resistor. any help would be greatly appreciated.

Hero999 · 4th August 2008, 04:43 PM

Use a 470Ω logarithmic pot. on the input.

czubek · 5th August 2008, 01:32 AM

Thank you hero999

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4th August 2008, 02:00 PM	(permalink)
czubek	need volume control for simple ipod amp Using the line outs from my ipod and feeding to a sure electronics 2*8W @ 8ohm/4ohm MP7720 D-Class Audio amplifier. Amp feeds the 4ohm stereo speakers in my ford ranger. Sound is great but volume is fixed and i cannot control. discovered that i need a pot, (dummy=me). using car voltage=12v. amp can deliver 8W into 2-4ohm/8/ohm at 24V max. can anyone suggest a brief spec for a stereo pot that i should get. they are listed at the radio shack site with associated resistance ranges. i don't have the actual amp circuit but a suggested circuit for the MP7720 indicates athe audio input feeding a 1uf capacitor in series with a 10kohm resistor. any help would be greatly appreciated.

4th August 2008, 04:43 PM	(permalink)
Hero999	Use a 470Ω logarithmic pot. on the input. __________________ I also post at the following sites: http://www.stop-microsoft.org http://www.heated-debates.com Screen name: Aloone_Jonez Last edited by Hero999; 5th August 2008 at 12:24 PM.

5th August 2008, 01:32 AM	(permalink)
czubek	Thank you hero999