cyberquest
New Member
audioguru.
1. Is the Preamps input cut-off freqency 30Hz, if so. What is the Preamps output cut-off freqency .If the input and output cut-off freqency are the same do they add or subtact at the preamps total output cut-off freqency. What is the total output cut-off freqency at the preamps output.
Is the preamps 0.33 coupling capacitor there to calculate with the 50k load for the headphones input cut-off freqency. Then the load is in parallel then the 50k pot becomes a 25k load at 50k.
2. Will the Preamps total output cut-off freqency (add) to the headphones input cut-off freqency then adds to the outout cut-off freqency. if so. Then what will the total cut-off freqency be at the headphones output.
If my headphones is 8ohms and each capacitor is at 470uf then the output cut-off freqency will be 42.33Hz.
If you calculate for the headphones input cut-off freqency with a capacitor of 0.33 and a 50k load in parallel that
50k is subtract in parallel and becomes a 25k load giving you a output cut-off freqency of 9.65Hz.
Now. If you take the preamps input and output cut-off freqency and add them to the headphones input and output cut-off freqency you will get the total cut-off freqency at the headphones output. Is this correct! yes or no.
3. If the preamps output coupling capacitor of 0.33uf is in series with a 0.005uf and in series with the
0.1uf at the decoders input would i get a cut-off freqency of 305Hz at the input of the decoder for the touch-tones.. How will this affect the input of the decoder. What will be the cut-off freqency.
Wouldn't a higher cut-off freqency at the decoders input be better for touch tones. Then at 21hz as stated in post #100.
1. Is the Preamps input cut-off freqency 30Hz, if so. What is the Preamps output cut-off freqency .If the input and output cut-off freqency are the same do they add or subtact at the preamps total output cut-off freqency. What is the total output cut-off freqency at the preamps output.
Is the preamps 0.33 coupling capacitor there to calculate with the 50k load for the headphones input cut-off freqency. Then the load is in parallel then the 50k pot becomes a 25k load at 50k.
2. Will the Preamps total output cut-off freqency (add) to the headphones input cut-off freqency then adds to the outout cut-off freqency. if so. Then what will the total cut-off freqency be at the headphones output.
If my headphones is 8ohms and each capacitor is at 470uf then the output cut-off freqency will be 42.33Hz.
If you calculate for the headphones input cut-off freqency with a capacitor of 0.33 and a 50k load in parallel that
50k is subtract in parallel and becomes a 25k load giving you a output cut-off freqency of 9.65Hz.
Now. If you take the preamps input and output cut-off freqency and add them to the headphones input and output cut-off freqency you will get the total cut-off freqency at the headphones output. Is this correct! yes or no.
3. If the preamps output coupling capacitor of 0.33uf is in series with a 0.005uf and in series with the
0.1uf at the decoders input would i get a cut-off freqency of 305Hz at the input of the decoder for the touch-tones.. How will this affect the input of the decoder. What will be the cut-off freqency.
Wouldn't a higher cut-off freqency at the decoders input be better for touch tones. Then at 21hz as stated in post #100.
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