In Reply to: RE: MGIIIa tweeter question posted by Davy on August 9, 2014 at 06:42:54:
When you use a PLLXO you have a substantial insertion loss due to the use of resistors in series (for LP) and their need to be an order of magnitude bigger in each progressive filter stage so that you retain Q. So a buffer allows you to have a lower insertion loss by using a lower value resistor in series after the buffer regardless of the values used before the buffer.
A gain stage (preamp) would allow both compensation for insertion loss and buffering and level control. Latency is very small in preamps - a bit longer if they use transformers either at input, interstage or output.
In some tube pre models you can apply part of the filer in the interstage coupling (a smaller cap in the interstage can be used as a HP, a transformer with limited turns can serve as a low pass).
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Follow Ups
- RE: MGIIIa tweeter question - Satie 07:14:18 08/09/14 (17)
- RE: MGIIIa tweeter question - Davy 12:32:22 08/09/14 (16)
- RE: MGIIIa tweeter question - Satie 04:20:59 08/10/14 (15)
- RE: MGIIIa tweeter question - Davy 05:31:52 08/10/14 (14)
- RE: MGIIIa tweeter question - Roger Gustavsson 23:33:40 08/11/14 (13)
- RE: MGIIIa tweeter question - Davy 05:18:13 08/12/14 (12)
- RE: MGIIIa tweeter question - Roger Gustavsson 06:02:19 08/12/14 (11)
- RE: MGIIIa tweeter question - Davy 07:17:49 08/12/14 (8)
- RE: MGIIIa tweeter question - Roger Gustavsson 08:11:52 08/12/14 (7)
- RE: MGIIIa tweeter question - Davy 10:12:07 08/12/14 (6)
- RE: MGIIIa tweeter question - Roger Gustavsson 12:33:08 08/12/14 (5)
- RE: MGIIIa tweeter question - Davy 13:27:36 08/12/14 (4)
- RE: MGIIIa tweeter question - Roger Gustavsson 22:55:54 08/12/14 (3)
- RE: MGIIIa tweeter question - Davy 05:50:49 08/13/14 (2)
- RE: MGIIIa tweeter question - Roger Gustavsson 07:48:35 08/13/14 (1)
- RE: MGIIIa tweeter question - Davy 05:08:25 08/14/14 (0)
- RE: MGIIIa tweeter question - Davy 07:09:09 08/12/14 (0)
- RE: MGIIIa tweeter question - Davy 07:03:02 08/12/14 (0)