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In Reply to: L3 Phono Output Impedance posted by hahax@verizon.net on February 11, 2012 at 17:17:01:
Allen,
I would estimate that the output impedance of the second stage is 27K-30K (since there is no overall loop feedback with the passive RIAA equalization). Driving a 100K load would not be ideal; a cathode follower or transformer would be needed for best results. Luckily, there is plenty of room in the chassis to add either option. Murray or I can easily draw up a cathode follower to meet your needs
Gary Muffley
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Follow Ups
- RE: L3 Phono Output Impedance - garymuffley@fuse.net 10:56:21 02/19/12 (5)
- RE: L3 Phono Output Impedance - horny 13:27:12 02/22/12 (4)
- RE: L3 Phono Output Impedance - garymuffley@fuse.net 21:17:36 02/24/12 (3)
- RE: L3 Phono Output Impedance - horny 12:51:47 02/25/12 (2)
- RE: L3 Phono Output Impedance - garymuffley@fuse.net 06:07:22 02/28/12 (1)
- RE: L3 Phono Output Impedance - Andersen 02:18:46 03/12/12 (0)
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