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17th February 2010, 09:13 AM
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#1 |
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diyAudio Member
Join Date: Mar 2004
Location: Denmark
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Aikido buffer/gain selector?
Hi,
I want to build an Aikido preamp for use with two poweramps. On is Pass F4, needed 25dB gain and the other normal poweramp needing only buffer of CD/volume level. Question is: Is it possible to insert signal between the two stages via coupling cap from a "direct input" (cap connected between the two 1M resistors at grid at follower stage)? If possible, the I can design the input selector between no gain and high gain.... |
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17th February 2010, 10:49 AM
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#2 |
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diyAudio Member
Join Date: Jan 2005
Location: Lokeren, Belgium
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Yes, it is certainly possible, if the cap has sufficient voltage rating.
But you will lose the volume control function for that direct input... Edit: however, I don't know what the input impedance at that point will be. Maybe someone more experienced can chime in.
__________________
Never send a human to do a machine's job. --Agent Smith Last edited by kavermei; 17th February 2010 at 10:53 AM. |
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