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Audio Resistance

KRe8ive

May 26, 2012
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May 26, 2012
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I have an audio device which the amplifier on it broke. The amplifier had a 100kohm input.

The part I want to replace it with only has a 10kohm input. Is it as simple as just adding a resistor across the connection to make it appear as 100kohm or do i have to do more?

Cheers
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
Moderator
Jan 21, 2010
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Well... You may just be able to use the new amplifier, or it may affect how the volume control works.

If it's a stereo amplifier and you're replacing one channel, any differences may be very annoying (you'll hear them).

Another option is a single stage transistor amplifier to buffer the signal.

However, the information you've provided is so limited that I can't give you any more than possible solutions.
 

KRe8ive

May 26, 2012
14
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May 26, 2012
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unfortunately the information i have is limited. THe amp I pulled out is a 4ch amp, and all i know is the input impedence is 100kohm. Am hoping to connect it to 2x 2ch amps
 

CDRIVE

Hauling 10' pipe on a Trek Shift3
May 8, 2012
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I have an audio device which the amplifier on it broke. The amplifier had a 100kohm input.

The part I want to replace it with only has a 10kohm input. Is it as simple as just adding a resistor across the connection to make it appear as 100kohm or do i have to do more?

Cheers

No, it's not that simple. Have you considered repairing the original amp? Do you have a schematic for the new one so we can determine if the input Z can be easily increased to 100K?

In lieu of neither of the above you would need something like this.

Chris
 

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