danytremblay
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- Feb 13, 2024
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Hi, I would like to feed existing 33 Ohms impedance input amplifiers with sound coming from a computer audio line out.
From what I found, the computer audio output is about 1 VRMS and can be considered as a 600 Ohms impedance.
I was thinking of using some audio isolation transformers to match the 600 Ohms to the 33 Ohms input but I figure that it can't be done since there won't be enough power from the audio card to supply the amplifiers input.
The other solution I tough was to use a small 2 watt 8 Ohms output amplifier with adjustable gain and use a resistor at the amplifier output to match the 33 Ohms amplifiers inputs requirements but I really don't know if that could do the job and how to calculate the required resistor value or if there is another better solution ?
Any help will be greatly appreciated !
From what I found, the computer audio output is about 1 VRMS and can be considered as a 600 Ohms impedance.
I was thinking of using some audio isolation transformers to match the 600 Ohms to the 33 Ohms input but I figure that it can't be done since there won't be enough power from the audio card to supply the amplifiers input.
The other solution I tough was to use a small 2 watt 8 Ohms output amplifier with adjustable gain and use a resistor at the amplifier output to match the 33 Ohms amplifiers inputs requirements but I really don't know if that could do the job and how to calculate the required resistor value or if there is another better solution ?
Any help will be greatly appreciated !