In Reply to: RE: PLLXO question related to LDR posted by JBen on February 26, 2012 at 10:47:28:
The problem with having a passive pre (regardless if it is an LDR or not) is that the output impedance varies if you change the volume. This means the the fc of the filters and the xo point of the PLLXO will also vary everytime you change the setting on the passive. You could put an opamp buffer between the passive and the PLLXO but then you might as well go to an active crossover.
"Our head is round in order to allow our thoughts to change direction." Francis Picabia
Edits: 02/26/12
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Follow Ups
- RE: PLLXO question related to LDRse - neolith 11:10:30 02/26/12 (5)
- RE: PLLXO question related to LDRse - JBen 12:56:15 02/26/12 (4)
- RE: PLLXO question related to LDRse - Davey 13:03:15 02/26/12 (3)
- RE: PLLXO question related to LDRse - neolith 14:01:37 02/26/12 (0)
- RE: PLLXO question related to LDRse - johnvb 13:12:44 02/26/12 (0)
- RE: PLLXO question related to LDRse - JBen 13:11:31 02/26/12 (0)